From 2f5cb43406d0b29b96248f5328a14a6f6abf8ae6 Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Wed, 30 Dec 2009 08:23:30 +0000 Subject: phylib: Properly reinitialize PHYs after hibernation Since hibernation assumes power loss, we should fully reinitialize PHYs (including platform fixups), as if PHYs were just attached. This patch factors phy_init_hw() out of phy_attach_direct(), then converts mdio_bus to dev_pm_ops and adds an appropriate restore() callback. Signed-off-by: Anton Vorontsov Signed-off-by: David S. Miller --- include/linux/phy.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/phy.h b/include/linux/phy.h index b1368b8f6572..7968defd2fa7 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -447,6 +447,7 @@ struct phy_device* get_phy_device(struct mii_bus *bus, int addr); int phy_device_register(struct phy_device *phy); int phy_clear_interrupt(struct phy_device *phydev); int phy_config_interrupt(struct phy_device *phydev, u32 interrupts); +int phy_init_hw(struct phy_device *phydev); int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, u32 flags, phy_interface_t interface); struct phy_device * phy_attach(struct net_device *dev, -- cgit v1.2.2 From 0f4bd46ec252887f44f1f065b41867cac8f70dfb Mon Sep 17 00:00:00 2001 From: KOSAKI Motohiro Date: Tue, 22 Dec 2009 03:15:43 +0000 Subject: kmsg_dump: Dump on crash_kexec as well crash_kexec gets called before kmsg_dump(KMSG_DUMP_OOPS) if panic_on_oops is set, so the kernel log buffer is not stored for this case. This patch adds a KMSG_DUMP_KEXEC dump type which gets called when crash_kexec() is invoked. To avoid getting double dumps, the old KMSG_DUMP_PANIC is moved below crash_kexec(). The mtdoops driver is modified to handle KMSG_DUMP_KEXEC in the same way as a panic. Signed-off-by: KOSAKI Motohiro Acked-by: Simon Kagstrom Signed-off-by: David Woodhouse --- include/linux/kmsg_dump.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/kmsg_dump.h b/include/linux/kmsg_dump.h index e32aa268efac..24b44145a886 100644 --- a/include/linux/kmsg_dump.h +++ b/include/linux/kmsg_dump.h @@ -17,6 +17,7 @@ enum kmsg_dump_reason { KMSG_DUMP_OOPS, KMSG_DUMP_PANIC, + KMSG_DUMP_KEXEC, }; /** -- cgit v1.2.2 From 1ae861e652b5457e7fa98ccbc55abea1e207916e Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 31 Dec 2009 12:15:54 +0100 Subject: PCI/PM: Use per-device D3 delays It turns out that some PCI devices require extra delays when changing power state from D3 to D0 (and the other way around). Although this is against the PCI specification, we can handle it quite easily by allowing drivers to define arbitrary D3 delays for devices known to require extra time for switching power states. Introduce additional field d3_delay in struct pci_dev and use it to store the value of the device's D0->D3 delay, in miliseconds. Make the PCI PM core code use the per-device d3_delay unless pci_pm_d3_delay is greater (in which case the latter is used). [This also allows the driver to specify d3_delay shorter than the 10 ms required by the PCI standard if the device is known to be able to handle that.] Make the sky2 driver set d3_delay to 150 for devices handled by it. Fixes http://bugzilla.kernel.org/show_bug.cgi?id=14730 which is a listed regression from 2.6.30. Signed-off-by: Rafael J. Wysocki Signed-off-by: Jesse Barnes --- include/linux/pci.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/pci.h b/include/linux/pci.h index 5da0690d9cee..174e5392e51e 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -243,6 +243,7 @@ struct pci_dev { unsigned int d2_support:1; /* Low power state D2 is supported */ unsigned int no_d1d2:1; /* Only allow D0 and D3 */ unsigned int wakeup_prepared:1; + unsigned int d3_delay; /* D3->D0 transition time in ms */ #ifdef CONFIG_PCIEASPM struct pcie_link_state *link_state; /* ASPM link state. */ -- cgit v1.2.2 From 59b015133cd0034f5904a76969d73476380aac46 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Tue, 5 Jan 2010 17:56:02 -0800 Subject: Input: serio - fix potential deadlock when unbinding drivers sysfs_remove_group() waits for sysfs attributes to be removed, therefore we do not need to worry about driver-specific attributes being accessed after driver has been detached from the device. In fact, attempts to take serio->drv_mutex in attribute methods may lead to the following deadlock: sysfs_read_file() fill_read_buffer() sysfs_get_active_two() psmouse_attr_show_helper() serio_pin_driver() serio_disconnect_driver() mutex_lock(&serio->drv_mutex); <--------> mutex_lock(&serio_drv_mutex); psmouse_disconnect() sysfs_remove_group(... psmouse_attr_group); .... sysfs_deactivate(); wait_for_completion(); Fix this by removing calls to serio_[un]pin_driver() and functions themselves and using driver-private mutexes to serialize access to attribute's set() methods that may change device state. Signed-off-by: Eric W. Biederman Signed-off-by: Dmitry Torokhov --- include/linux/serio.h | 19 ------------------- 1 file changed, 19 deletions(-) (limited to 'include') diff --git a/include/linux/serio.h b/include/linux/serio.h index e2f3044d4a4a..813d26c247ec 100644 --- a/include/linux/serio.h +++ b/include/linux/serio.h @@ -136,25 +136,6 @@ static inline void serio_continue_rx(struct serio *serio) spin_unlock_irq(&serio->lock); } -/* - * Use the following functions to pin serio's driver in process context - */ -static inline int serio_pin_driver(struct serio *serio) -{ - return mutex_lock_interruptible(&serio->drv_mutex); -} - -static inline void serio_pin_driver_uninterruptible(struct serio *serio) -{ - mutex_lock(&serio->drv_mutex); -} - -static inline void serio_unpin_driver(struct serio *serio) -{ - mutex_unlock(&serio->drv_mutex); -} - - #endif /* -- cgit v1.2.2 From 76446cac68568fc7f5168a27deaf803ed22a4360 Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Thu, 17 Dec 2009 22:05:42 -0500 Subject: drm/i915: execbuf2 support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch adds a new execbuf ioctl, execbuf2, for use by clients that want to control fence register allocation more finely. The buffer passed in to the new ioctl includes a new relocation type to indicate whether a given object needs a fence register assigned for the command buffer in question. Compatibility with the existing execbuf ioctl is implemented in terms of the new code, preserving the assumption that fence registers are required for pre-965 rendering commands. Signed-off-by: Jesse Barnes [ickle: Remove pre-emptive clear_fence_reg()] Signed-off-by: Chris Wilson Signed-off-by: Kristian Høgsberg [anholt: Removed dmesg spam] Signed-off-by: Eric Anholt --- include/drm/i915_drm.h | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) (limited to 'include') diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h index ec3f5e80a5df..b64a8d7cdf6d 100644 --- a/include/drm/i915_drm.h +++ b/include/drm/i915_drm.h @@ -188,6 +188,7 @@ typedef struct _drm_i915_sarea { #define DRM_I915_GEM_MADVISE 0x26 #define DRM_I915_OVERLAY_PUT_IMAGE 0x27 #define DRM_I915_OVERLAY_ATTRS 0x28 +#define DRM_I915_GEM_EXECBUFFER2 0x29 #define DRM_IOCTL_I915_INIT DRM_IOW( DRM_COMMAND_BASE + DRM_I915_INIT, drm_i915_init_t) #define DRM_IOCTL_I915_FLUSH DRM_IO ( DRM_COMMAND_BASE + DRM_I915_FLUSH) @@ -207,6 +208,7 @@ typedef struct _drm_i915_sarea { #define DRM_IOCTL_I915_VBLANK_SWAP DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_VBLANK_SWAP, drm_i915_vblank_swap_t) #define DRM_IOCTL_I915_GEM_INIT DRM_IOW(DRM_COMMAND_BASE + DRM_I915_GEM_INIT, struct drm_i915_gem_init) #define DRM_IOCTL_I915_GEM_EXECBUFFER DRM_IOW(DRM_COMMAND_BASE + DRM_I915_GEM_EXECBUFFER, struct drm_i915_gem_execbuffer) +#define DRM_IOCTL_I915_GEM_EXECBUFFER2 DRM_IOW(DRM_COMMAND_BASE + DRM_I915_GEM_EXECBUFFER2, struct drm_i915_gem_execbuffer2) #define DRM_IOCTL_I915_GEM_PIN DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_PIN, struct drm_i915_gem_pin) #define DRM_IOCTL_I915_GEM_UNPIN DRM_IOW(DRM_COMMAND_BASE + DRM_I915_GEM_UNPIN, struct drm_i915_gem_unpin) #define DRM_IOCTL_I915_GEM_BUSY DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_BUSY, struct drm_i915_gem_busy) @@ -272,6 +274,7 @@ typedef struct drm_i915_irq_wait { #define I915_PARAM_NUM_FENCES_AVAIL 6 #define I915_PARAM_HAS_OVERLAY 7 #define I915_PARAM_HAS_PAGEFLIPPING 8 +#define I915_PARAM_HAS_EXECBUF2 9 typedef struct drm_i915_getparam { int param; @@ -567,6 +570,57 @@ struct drm_i915_gem_execbuffer { __u64 cliprects_ptr; }; +struct drm_i915_gem_exec_object2 { + /** + * User's handle for a buffer to be bound into the GTT for this + * operation. + */ + __u32 handle; + + /** Number of relocations to be performed on this buffer */ + __u32 relocation_count; + /** + * Pointer to array of struct drm_i915_gem_relocation_entry containing + * the relocations to be performed in this buffer. + */ + __u64 relocs_ptr; + + /** Required alignment in graphics aperture */ + __u64 alignment; + + /** + * Returned value of the updated offset of the object, for future + * presumed_offset writes. + */ + __u64 offset; + +#define EXEC_OBJECT_NEEDS_FENCE (1<<0) + __u64 flags; + __u64 rsvd1; + __u64 rsvd2; +}; + +struct drm_i915_gem_execbuffer2 { + /** + * List of gem_exec_object2 structs + */ + __u64 buffers_ptr; + __u32 buffer_count; + + /** Offset in the batchbuffer to start execution from. */ + __u32 batch_start_offset; + /** Bytes used in batchbuffer from batch_start_offset */ + __u32 batch_len; + __u32 DR1; + __u32 DR4; + __u32 num_cliprects; + /** This is a struct drm_clip_rect *cliprects */ + __u64 cliprects_ptr; + __u64 flags; /* currently unused */ + __u64 rsvd1; + __u64 rsvd2; +}; + struct drm_i915_gem_pin { /** Handle of the buffer to be pinned. */ __u32 handle; -- cgit v1.2.2 From 8558e3943df1c51c3377cb4e8a52ea484d6f357d Mon Sep 17 00:00:00 2001 From: Len Brown Date: Wed, 6 Jan 2010 16:11:06 -0500 Subject: x86, ACPI: delete acpi_boot_table_init() return value cleanup only. setup_arch(), doesn't care care if ACPI initialization succeeded or failed, so delete acpi_boot_table_init()'s return value. Signed-off-by: Len Brown --- include/linux/acpi.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 36924255c0d5..b926afe8c03e 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -80,7 +80,7 @@ char * __acpi_map_table (unsigned long phys_addr, unsigned long size); void __acpi_unmap_table(char *map, unsigned long size); int early_acpi_boot_init(void); int acpi_boot_init (void); -int acpi_boot_table_init (void); +void acpi_boot_table_init (void); int acpi_mps_check (void); int acpi_numa_init (void); @@ -321,9 +321,9 @@ static inline int acpi_boot_init(void) return 0; } -static inline int acpi_boot_table_init(void) +static inline void acpi_boot_table_init(void) { - return 0; + return; } static inline int acpi_mps_check(void) -- cgit v1.2.2 From cfe79c00a2f4f687eed8b7534d1d3d3d35540c29 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Wed, 6 Jan 2010 17:23:23 +0000 Subject: NOMMU: Avoiding duplicate icache flushes of shared maps When working with FDPIC, there are many shared mappings of read-only code regions between applications (the C library, applet packages like busybox, etc.), but the current do_mmap_pgoff() function will issue an icache flush whenever a VMA is added to an MM instead of only doing it when the map is initially created. The flush can instead be done when a region is first mmapped PROT_EXEC. Note that we may not rely on the first mapping of a region being executable - it's possible for it to be PROT_READ only, so we have to remember whether we've flushed the region or not, and then flush the entire region when a bit of it is made executable. However, this also affects the brk area. That will no longer be executable. We can mprotect() it to PROT_EXEC on MPU-mode kernels, but for NOMMU mode kernels, when it increases the brk allocation, making sys_brk() flush the extra from the icache should suffice. The brk area probably isn't used by NOMMU programs since the brk area can only use up the leavings from the stack allocation, where the stack allocation is larger than requested. Signed-off-by: David Howells Signed-off-by: Mike Frysinger Signed-off-by: Linus Torvalds --- include/linux/mm_types.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 84a524afb3dc..84d020bed083 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -123,6 +123,8 @@ struct vm_region { struct file *vm_file; /* the backing file or NULL */ atomic_t vm_usage; /* region usage count */ + bool vm_icache_flushed : 1; /* true if the icache has been flushed for + * this region */ }; /* -- cgit v1.2.2 From e6be8d9d17bd44061116f601fe2609b3ace7aa69 Mon Sep 17 00:00:00 2001 From: Zhenyu Wang Date: Tue, 5 Jan 2010 11:25:05 +0800 Subject: drm: remove address mask param for drm_pci_alloc() drm_pci_alloc() has input of address mask for setting pci dma mask on the device, which should be properly setup by drm driver. And leave it as a param for drm_pci_alloc() would cause confusion or mistake would corrupt the correct dma mask setting, as seen on intel hw which set wrong dma mask for hw status page. So remove it from drm_pci_alloc() function. Signed-off-by: Zhenyu Wang Signed-off-by: Dave Airlie --- include/drm/drmP.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/drm/drmP.h b/include/drm/drmP.h index 71dafb69cfeb..ffac157fb5b2 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -1408,7 +1408,7 @@ extern int drm_ati_pcigart_cleanup(struct drm_device *dev, struct drm_ati_pcigart_info * gart_info); extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size, - size_t align, dma_addr_t maxaddr); + size_t align); extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah); extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah); -- cgit v1.2.2 From 7ad6848c7e81a603605fad3f3575841aab004eea Mon Sep 17 00:00:00 2001 From: Octavian Purdila Date: Wed, 6 Jan 2010 20:37:01 -0800 Subject: ip: fix mc_loop checks for tunnels with multicast outer addresses When we have L3 tunnels with different inner/outer families (i.e. IPV4/IPV6) which use a multicast address as the outer tunnel destination address, multicast packets will be loopbacked back to the sending socket even if IP*_MULTICAST_LOOP is set to disabled. The mc_loop flag is present in the family specific part of the socket (e.g. the IPv4 or IPv4 specific part). setsockopt sets the inner family mc_loop flag. When the packet is pushed through the L3 tunnel it will eventually be processed by the outer family which if different will check the flag in a different part of the socket then it was set. Signed-off-by: Octavian Purdila Signed-off-by: David S. Miller --- include/net/ip.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include') diff --git a/include/net/ip.h b/include/net/ip.h index 85108cfbb1ae..d9a0e74d8923 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -326,6 +326,22 @@ static __inline__ void inet_reset_saddr(struct sock *sk) #endif +static inline int sk_mc_loop(struct sock *sk) +{ + if (!sk) + return 1; + switch (sk->sk_family) { + case AF_INET: + return inet_sk(sk)->mc_loop; +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) + case AF_INET6: + return inet6_sk(sk)->mc_loop; +#endif + } + __WARN(); + return 1; +} + extern int ip_call_ra_chain(struct sk_buff *skb); /* -- cgit v1.2.2 From 6144a85a0e018c19bc4b24f7eb6c1f3f7431813d Mon Sep 17 00:00:00 2001 From: Jason Wessel Date: Thu, 7 Jan 2010 11:58:36 -0600 Subject: maccess,probe_kernel: Allow arch specific override probe_kernel_(read|write) Some archs such as blackfin, would like to have an arch specific probe_kernel_read() and probe_kernel_write() implementation which can fall back to the generic implementation if no special operations are needed. CC: Thomas Gleixner CC: Ingo Molnar Signed-off-by: Jason Wessel Signed-off-by: Mike Frysinger --- include/linux/uaccess.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h index 6b58367d145e..d512d98dfb7d 100644 --- a/include/linux/uaccess.h +++ b/include/linux/uaccess.h @@ -94,6 +94,7 @@ static inline unsigned long __copy_from_user_nocache(void *to, * happens, handle that and return -EFAULT. */ extern long probe_kernel_read(void *dst, void *src, size_t size); +extern long __probe_kernel_read(void *dst, void *src, size_t size); /* * probe_kernel_write(): safely attempt to write to a location @@ -104,6 +105,7 @@ extern long probe_kernel_read(void *dst, void *src, size_t size); * Safely write to address @dst from the buffer at @src. If a kernel fault * happens, handle that and return -EFAULT. */ -extern long probe_kernel_write(void *dst, void *src, size_t size); +extern long notrace probe_kernel_write(void *dst, void *src, size_t size); +extern long notrace __probe_kernel_write(void *dst, void *src, size_t size); #endif /* __LINUX_UACCESS_H__ */ -- cgit v1.2.2 From b11e1eca7ed9c0b5dab21a62c11acc711d9bdda0 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Thu, 7 Jan 2010 11:58:37 -0600 Subject: kgdb: Fix kernel-doc format error in kgdb.h linux-next-20081022//include/linux/kgdb.h:308): duplicate section name 'Description' and fix typos in that file's kernel-doc comments. Signed-off-by: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Jason Wessel --- include/linux/kgdb.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'include') diff --git a/include/linux/kgdb.h b/include/linux/kgdb.h index 6adcc297e354..19ec41a183f5 100644 --- a/include/linux/kgdb.h +++ b/include/linux/kgdb.h @@ -29,8 +29,7 @@ struct pt_regs; * * On some architectures it is required to skip a breakpoint * exception when it occurs after a breakpoint has been removed. - * This can be implemented in the architecture specific portion of - * for kgdb. + * This can be implemented in the architecture specific portion of kgdb. */ extern int kgdb_skipexception(int exception, struct pt_regs *regs); @@ -65,7 +64,7 @@ struct uart_port; /** * kgdb_breakpoint - compiled in breakpoint * - * This will be impelmented a static inline per architecture. This + * This will be implemented as a static inline per architecture. This * function is called by the kgdb core to execute an architecture * specific trap to cause kgdb to enter the exception processing. * @@ -190,7 +189,7 @@ kgdb_arch_handle_exception(int vector, int signo, int err_code, * @flags: Current IRQ state * * On SMP systems, we need to get the attention of the other CPUs - * and get them be in a known state. This should do what is needed + * and get them into a known state. This should do what is needed * to get the other CPUs to call kgdb_wait(). Note that on some arches, * the NMI approach is not used for rounding up all the CPUs. For example, * in case of MIPS, smp_call_function() is used to roundup CPUs. In -- cgit v1.2.2 From 7970e677accb676f15e11468c60cb93ae477a513 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 7 Jan 2010 13:47:47 -0500 Subject: drm: Add eDP connector type Add a new connector type for eDP (embedded displayport) eDP is more or less the same as DP but there are some cases when you might want to handle it separately. Signed-off-by: Alex Deucher Signed-off-by: Dave Airlie --- include/drm/drm_mode.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/drm/drm_mode.h b/include/drm/drm_mode.h index 43009bc2e757..bc4fdf27bd2e 100644 --- a/include/drm/drm_mode.h +++ b/include/drm/drm_mode.h @@ -160,6 +160,7 @@ struct drm_mode_get_encoder { #define DRM_MODE_CONNECTOR_HDMIA 11 #define DRM_MODE_CONNECTOR_HDMIB 12 #define DRM_MODE_CONNECTOR_TV 13 +#define DRM_MODE_CONNECTOR_eDP 14 struct drm_mode_get_connector { -- cgit v1.2.2 From dd3d145d49c5816b79acc6761ebbd842bc50b0ee Mon Sep 17 00:00:00 2001 From: "Martin K. Petersen" Date: Mon, 11 Jan 2010 03:21:48 -0500 Subject: block: Fix discard alignment calculation and printing Discard alignment reporting for partitions was incorrect. Update to match the algorithm used elsewhere. The alignment can be negative (misaligned). Fix format string accordingly. Signed-off-by: Martin K. Petersen Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 9b98173a8184..a41bcc8e140f 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1148,8 +1148,11 @@ static inline int queue_discard_alignment(struct request_queue *q) static inline int queue_sector_discard_alignment(struct request_queue *q, sector_t sector) { - return ((sector << 9) - q->limits.discard_alignment) - & (q->limits.discard_granularity - 1); + struct queue_limits *lim = &q->limits; + unsigned int alignment = (sector << 9) & (lim->discard_granularity - 1); + + return (lim->discard_granularity + lim->discard_alignment - alignment) + & (lim->discard_granularity - 1); } static inline unsigned int queue_discard_zeroes_data(struct request_queue *q) -- cgit v1.2.2 From 17be8c245054b9c7786545af3ba3ca4e54cd4ad9 Mon Sep 17 00:00:00 2001 From: "Martin K. Petersen" Date: Mon, 11 Jan 2010 03:21:49 -0500 Subject: block: bdev_stack_limits wrapper DM does not want to know about partition offsets. Add a partition-aware wrapper that DM can use when stacking block devices. Signed-off-by: Martin K. Petersen Acked-by: Mike Snitzer Reviewed-by: Alasdair G Kergon Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index a41bcc8e140f..5c8018977efa 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -938,6 +938,8 @@ extern void blk_queue_io_opt(struct request_queue *q, unsigned int opt); extern void blk_set_default_limits(struct queue_limits *lim); extern int blk_stack_limits(struct queue_limits *t, struct queue_limits *b, sector_t offset); +extern int bdev_stack_limits(struct queue_limits *t, struct block_device *bdev, + sector_t offset); extern void disk_stack_limits(struct gendisk *disk, struct block_device *bdev, sector_t offset); extern void blk_queue_stack_limits(struct request_queue *t, struct request_queue *b); -- cgit v1.2.2 From ce289321b7dc1eb108e3df0dec872b7429ef49f7 Mon Sep 17 00:00:00 2001 From: Kirill Afonshin Date: Fri, 8 Jan 2010 22:09:59 +0300 Subject: block: removed unused as_io_context It isn't used anymore, since AS was deleted. Signed-off-by: Jens Axboe --- include/linux/iocontext.h | 27 --------------------------- 1 file changed, 27 deletions(-) (limited to 'include') diff --git a/include/linux/iocontext.h b/include/linux/iocontext.h index a63235996309..78ef023227d4 100644 --- a/include/linux/iocontext.h +++ b/include/linux/iocontext.h @@ -4,32 +4,6 @@ #include #include -/* - * This is the per-process anticipatory I/O scheduler state. - */ -struct as_io_context { - spinlock_t lock; - - void (*dtor)(struct as_io_context *aic); /* destructor */ - void (*exit)(struct as_io_context *aic); /* called on task exit */ - - unsigned long state; - atomic_t nr_queued; /* queued reads & sync writes */ - atomic_t nr_dispatched; /* number of requests gone to the drivers */ - - /* IO History tracking */ - /* Thinktime */ - unsigned long last_end_request; - unsigned long ttime_total; - unsigned long ttime_samples; - unsigned long ttime_mean; - /* Layout pattern */ - unsigned int seek_samples; - sector_t last_request_pos; - u64 seek_total; - sector_t seek_mean; -}; - struct cfq_queue; struct cfq_io_context { void *key; @@ -78,7 +52,6 @@ struct io_context { unsigned long last_waited; /* Time last woken after wait for request */ int nr_batch_requests; /* Number of requests left in the batch */ - struct as_io_context *aic; struct radix_tree_root radix_root; struct hlist_head cic_list; void *ioc_data; -- cgit v1.2.2 From 7af92f8754b87bc78cbfd447d5f4096b25c46682 Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Wed, 6 Jan 2010 15:45:55 -0800 Subject: genhd: overlapping variable definition This fixes the sparse warning: fs/ext4/super.c:2390:40: warning: symbol 'i' shadows an earlier one fs/ext4/super.c:2368:22: originally declared here Using 'i' in a macro is dubious practice. Signed-off-by: Stephen Hemminger Signed-off-by: Jens Axboe --- include/linux/genhd.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/linux/genhd.h b/include/linux/genhd.h index c6c0c41af35f..9717081c75ad 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -256,9 +256,9 @@ extern struct hd_struct *disk_map_sector_rcu(struct gendisk *disk, #define part_stat_read(part, field) \ ({ \ typeof((part)->dkstats->field) res = 0; \ - int i; \ - for_each_possible_cpu(i) \ - res += per_cpu_ptr((part)->dkstats, i)->field; \ + unsigned int _cpu; \ + for_each_possible_cpu(_cpu) \ + res += per_cpu_ptr((part)->dkstats, _cpu)->field; \ res; \ }) -- cgit v1.2.2 From 4b529401c5089cf33f7165607cbc2fde43357bfb Mon Sep 17 00:00:00 2001 From: Andreas Fenkart Date: Fri, 8 Jan 2010 14:42:31 -0800 Subject: mm: make totalhigh_pages unsigned long Makes it consistent with the extern declaration, used when CONFIG_HIGHMEM is set Removes redundant casts in printout messages Signed-off-by: Andreas Fenkart Acked-by: Russell King Cc: Ralf Baechle Cc: David Howells Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Chen Liqin Cc: Lennox Wu Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/highmem.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/highmem.h b/include/linux/highmem.h index 211ff4497269..ab2cc20e21a5 100644 --- a/include/linux/highmem.h +++ b/include/linux/highmem.h @@ -46,7 +46,7 @@ void kmap_flush_unused(void); static inline unsigned int nr_free_highpages(void) { return 0; } -#define totalhigh_pages 0 +#define totalhigh_pages 0UL #ifndef ARCH_HAS_KMAP static inline void *kmap(struct page *page) -- cgit v1.2.2 From e992cd9b72a18122bd5c958715623057f110793f Mon Sep 17 00:00:00 2001 From: Vegard Nossum Date: Fri, 8 Jan 2010 14:42:35 -0800 Subject: kmemcheck: make bitfield annotations truly no-ops when disabled It turns out that even zero-sized struct members (int foo[0];) will affect the struct layout, causing us in particular to lose 4 bytes in struct sock. This patch fixes the regression in CONFIG_KMEMCHECK=n case. Reported-by: Eric Dumazet Signed-off-by: Vegard Nossum Acked-by: Pekka Enberg Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kmemcheck.h | 110 ++++++++++++++++++++++++---------------------- 1 file changed, 58 insertions(+), 52 deletions(-) (limited to 'include') diff --git a/include/linux/kmemcheck.h b/include/linux/kmemcheck.h index e880d4cf9e22..08d7dc4ddf40 100644 --- a/include/linux/kmemcheck.h +++ b/include/linux/kmemcheck.h @@ -36,6 +36,56 @@ int kmemcheck_hide_addr(unsigned long address); bool kmemcheck_is_obj_initialized(unsigned long addr, size_t size); +/* + * Bitfield annotations + * + * How to use: If you have a struct using bitfields, for example + * + * struct a { + * int x:8, y:8; + * }; + * + * then this should be rewritten as + * + * struct a { + * kmemcheck_bitfield_begin(flags); + * int x:8, y:8; + * kmemcheck_bitfield_end(flags); + * }; + * + * Now the "flags_begin" and "flags_end" members may be used to refer to the + * beginning and end, respectively, of the bitfield (and things like + * &x.flags_begin is allowed). As soon as the struct is allocated, the bit- + * fields should be annotated: + * + * struct a *a = kmalloc(sizeof(struct a), GFP_KERNEL); + * kmemcheck_annotate_bitfield(a, flags); + */ +#define kmemcheck_bitfield_begin(name) \ + int name##_begin[0]; + +#define kmemcheck_bitfield_end(name) \ + int name##_end[0]; + +#define kmemcheck_annotate_bitfield(ptr, name) \ + do { \ + int _n; \ + \ + if (!ptr) \ + break; \ + \ + _n = (long) &((ptr)->name##_end) \ + - (long) &((ptr)->name##_begin); \ + MAYBE_BUILD_BUG_ON(_n < 0); \ + \ + kmemcheck_mark_initialized(&((ptr)->name##_begin), _n); \ + } while (0) + +#define kmemcheck_annotate_variable(var) \ + do { \ + kmemcheck_mark_initialized(&(var), sizeof(var)); \ + } while (0) \ + #else #define kmemcheck_enabled 0 @@ -106,60 +156,16 @@ static inline bool kmemcheck_is_obj_initialized(unsigned long addr, size_t size) return true; } -#endif /* CONFIG_KMEMCHECK */ - -/* - * Bitfield annotations - * - * How to use: If you have a struct using bitfields, for example - * - * struct a { - * int x:8, y:8; - * }; - * - * then this should be rewritten as - * - * struct a { - * kmemcheck_bitfield_begin(flags); - * int x:8, y:8; - * kmemcheck_bitfield_end(flags); - * }; - * - * Now the "flags_begin" and "flags_end" members may be used to refer to the - * beginning and end, respectively, of the bitfield (and things like - * &x.flags_begin is allowed). As soon as the struct is allocated, the bit- - * fields should be annotated: - * - * struct a *a = kmalloc(sizeof(struct a), GFP_KERNEL); - * kmemcheck_annotate_bitfield(a, flags); - * - * Note: We provide the same definitions for both kmemcheck and non- - * kmemcheck kernels. This makes it harder to introduce accidental errors. It - * is also allowed to pass NULL pointers to kmemcheck_annotate_bitfield(). - */ -#define kmemcheck_bitfield_begin(name) \ - int name##_begin[0]; - -#define kmemcheck_bitfield_end(name) \ - int name##_end[0]; +#define kmemcheck_bitfield_begin(name) +#define kmemcheck_bitfield_end(name) +#define kmemcheck_annotate_bitfield(ptr, name) \ + do { \ + } while (0) -#define kmemcheck_annotate_bitfield(ptr, name) \ - do { \ - int _n; \ - \ - if (!ptr) \ - break; \ - \ - _n = (long) &((ptr)->name##_end) \ - - (long) &((ptr)->name##_begin); \ - MAYBE_BUILD_BUG_ON(_n < 0); \ - \ - kmemcheck_mark_initialized(&((ptr)->name##_begin), _n); \ +#define kmemcheck_annotate_variable(var) \ + do { \ } while (0) -#define kmemcheck_annotate_variable(var) \ - do { \ - kmemcheck_mark_initialized(&(var), sizeof(var)); \ - } while (0) \ +#endif /* CONFIG_KMEMCHECK */ #endif /* LINUX_KMEMCHECK_H */ -- cgit v1.2.2 From 7dd65feb6c603e13eba501c34c662259ab38e70e Mon Sep 17 00:00:00 2001 From: Albin Tonnerre Date: Fri, 8 Jan 2010 14:42:42 -0800 Subject: lib: add support for LZO-compressed kernels This patch series adds generic support for creating and extracting LZO-compressed kernel images, as well as support for using such images on the x86 and ARM architectures, and support for creating and using LZO-compressed initrd and initramfs images. Russell King said: : Testing on a Cortex A9 model: : - lzo decompressor is 65% of the time gzip takes to decompress a kernel : - lzo kernel is 9% larger than a gzip kernel : : which I'm happy to say confirms your figures when comparing the two. : : However, when comparing your new gzip code to the old gzip code: : - new is 99% of the size of the old code : - new takes 42% of the time to decompress than the old code : : What this means is that for a proper comparison, the results get even better: : - lzo is 7.5% larger than the old gzip'd kernel image : - lzo takes 28% of the time that the old gzip code took : : So the expense seems definitely worth the effort. The only reason I : can think of ever using gzip would be if you needed the additional : compression (eg, because you have limited flash to store the image.) : : I would argue that the default for ARM should therefore be LZO. This patch: The lzo compressor is worse than gzip at compression, but faster at extraction. Here are some figures for an ARM board I'm working on: Uncompressed size: 3.24Mo gzip 1.61Mo 0.72s lzo 1.75Mo 0.48s So for a compression ratio that is still relatively close to gzip, it's much faster to extract, at least in that case. This part contains: - Makefile routine to support lzo compression - Fixes to the existing lzo compressor so that it can be used in compressed kernels - wrapper around the existing lzo1x_decompress, as it only extracts one block at a time, while we need to extract a whole file here - config dialog for kernel compression [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: cleanup] Signed-off-by: Albin Tonnerre Tested-by: Wu Zhangjin Acked-by: "H. Peter Anvin" Cc: Ingo Molnar Cc: Thomas Gleixner Tested-by: Russell King Acked-by: Russell King Cc: Ralf Baechle Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/decompress/unlzo.h | 10 ++++++++++ 1 file changed, 10 insertions(+) create mode 100644 include/linux/decompress/unlzo.h (limited to 'include') diff --git a/include/linux/decompress/unlzo.h b/include/linux/decompress/unlzo.h new file mode 100644 index 000000000000..987229752519 --- /dev/null +++ b/include/linux/decompress/unlzo.h @@ -0,0 +1,10 @@ +#ifndef DECOMPRESS_UNLZO_H +#define DECOMPRESS_UNLZO_H + +int unlzo(unsigned char *inbuf, int len, + int(*fill)(void*, unsigned int), + int(*flush)(void*, unsigned int), + unsigned char *output, + int *pos, + void(*error)(char *x)); +#endif -- cgit v1.2.2 From 80884094e34456887ecdbd107d40e72c4a40f9c9 Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Fri, 8 Jan 2010 14:43:08 -0800 Subject: gpio: adp5588-gpio: new driver for ADP5588 GPIO expanders Signed-off-by: Michael Hennerich Signed-off-by: Mike Frysinger Cc: Jean Delvare Cc: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/i2c/adp5588.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include') diff --git a/include/linux/i2c/adp5588.h b/include/linux/i2c/adp5588.h index fc5db826b48e..02c9af374741 100644 --- a/include/linux/i2c/adp5588.h +++ b/include/linux/i2c/adp5588.h @@ -89,4 +89,16 @@ struct adp5588_kpad_platform_data { unsigned short unlock_key2; /* Unlock Key 2 */ }; +struct adp5588_gpio_platform_data { + unsigned gpio_start; /* GPIO Chip base # */ + unsigned pullup_dis_mask; /* Pull-Up Disable Mask */ + int (*setup)(struct i2c_client *client, + int gpio, unsigned ngpio, + void *context); + int (*teardown)(struct i2c_client *client, + int gpio, unsigned ngpio, + void *context); + void *context; +}; + #endif -- cgit v1.2.2 From a29815a333c6c6e677294bbe5958e771d0aad3fd Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Sun, 10 Jan 2010 16:28:09 +0200 Subject: core, x86: make LIST_POISON less deadly The list macros use LIST_POISON1 and LIST_POISON2 as undereferencable pointers in order to trap erronous use of freed list_heads. Unfortunately userspace can arrange for those pointers to actually be dereferencable, potentially turning an oops to an expolit. To avoid this allow architectures (currently x86_64 only) to override the default values for these pointers with truly-undereferencable values. This is easy on x86_64 as the virtual address space is large and contains areas that cannot be mapped. Other 64-bit architectures will likely find similar unmapped ranges. [ingo: switch to 0xdead000000000000 as the unmapped area] [ingo: add comments, cleanup] [jaswinder: eliminate sparse warnings] Acked-by: Linus Torvalds Signed-off-by: Jaswinder Singh Rajput Signed-off-by: Ingo Molnar Signed-off-by: Avi Kivity Signed-off-by: Linus Torvalds --- include/linux/poison.h | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/poison.h b/include/linux/poison.h index 7fc194aef8c2..2110a81c5e2a 100644 --- a/include/linux/poison.h +++ b/include/linux/poison.h @@ -2,13 +2,25 @@ #define _LINUX_POISON_H /********** include/linux/list.h **********/ + +/* + * Architectures might want to move the poison pointer offset + * into some well-recognized area such as 0xdead000000000000, + * that is also not mappable by user-space exploits: + */ +#ifdef CONFIG_ILLEGAL_POINTER_VALUE +# define POISON_POINTER_DELTA _AC(CONFIG_ILLEGAL_POINTER_VALUE, UL) +#else +# define POISON_POINTER_DELTA 0 +#endif + /* * These are non-NULL pointers that will result in page faults * under normal circumstances, used to verify that nobody uses * non-initialized list entries. */ -#define LIST_POISON1 ((void *) 0x00100100) -#define LIST_POISON2 ((void *) 0x00200200) +#define LIST_POISON1 ((void *) 0x00100100 + POISON_POINTER_DELTA) +#define LIST_POISON2 ((void *) 0x00200200 + POISON_POINTER_DELTA) /********** include/linux/timer.h **********/ /* -- cgit v1.2.2 From a393db6f10ef2d4f28257234cfc730e744dfb6a4 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Tue, 22 Dec 2009 13:35:52 +0100 Subject: drbd: Allow online resizing of DRBD devices while peer not reachable (needs to be explicitly forced) Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_nl.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/drbd_nl.h b/include/linux/drbd_nl.h index db5721ad50d1..a4d82f895994 100644 --- a/include/linux/drbd_nl.h +++ b/include/linux/drbd_nl.h @@ -69,6 +69,7 @@ NL_PACKET(disconnect, 6, ) NL_PACKET(resize, 7, NL_INT64( 29, T_MAY_IGNORE, resize_size) + NL_BIT( 68, T_MAY_IGNORE, resize_force) ) NL_PACKET(syncer_conf, 8, -- cgit v1.2.2 From 2ebccd71a71e6078920bc65b40f120e72b71c2b6 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Tue, 12 Jan 2010 10:09:07 +0100 Subject: drbd: The kernel code is now equivalent to out of tree release 8.3.7 Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index e84f4733cb55..78962272338a 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -53,7 +53,7 @@ extern const char *drbd_buildtag(void); -#define REL_VERSION "8.3.6" +#define REL_VERSION "8.3.7" #define API_VERSION 88 #define PRO_VERSION_MIN 86 #define PRO_VERSION_MAX 91 -- cgit v1.2.2 From 5040ab67a2c6d5710ba497dc52a8f7035729d7b0 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 11 Jan 2010 11:14:44 +0900 Subject: libata: retry link resume if necessary Interestingly, when SIDPR is used in ata_piix, writes to DET in SControl sometimes get ignored leading to detection failure. Update sata_link_resume() such that it reads back SControl after clearing DET and retry if it's not clear. Signed-off-by: Tejun Heo Reported-by: fengxiangjun Reported-by: Jim Faulkner Cc: stable@kernel.org Signed-off-by: Jeff Garzik --- include/linux/libata.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include') diff --git a/include/linux/libata.h b/include/linux/libata.h index 6a9c4ddd3d95..73112250862c 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -354,6 +354,9 @@ enum { /* max tries if error condition is still set after ->error_handler */ ATA_EH_MAX_TRIES = 5, + /* sometimes resuming a link requires several retries */ + ATA_LINK_RESUME_TRIES = 5, + /* how hard are we gonna try to probe/recover devices */ ATA_PROBE_MAX_TRIES = 3, ATA_EH_DEV_TRIES = 3, -- cgit v1.2.2 From 2c761270d5520dd84ab0b4e47c24d99ff8503c38 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 12 Jan 2010 17:39:16 +1100 Subject: lib: Introduce generic list_sort function There are two copies of list_sort() in the tree already, one in the DRM code, another in ubifs. Now XFS needs this as well. Create a generic list_sort() function from the ubifs version and convert existing users to it so we don't end up with yet another copy in the tree. Signed-off-by: Dave Chinner Acked-by: Dave Airlie Acked-by: Artem Bityutskiy Signed-off-by: Linus Torvalds --- include/linux/list_sort.h | 11 +++++++++++ 1 file changed, 11 insertions(+) create mode 100644 include/linux/list_sort.h (limited to 'include') diff --git a/include/linux/list_sort.h b/include/linux/list_sort.h new file mode 100644 index 000000000000..1a2df2efb771 --- /dev/null +++ b/include/linux/list_sort.h @@ -0,0 +1,11 @@ +#ifndef _LINUX_LIST_SORT_H +#define _LINUX_LIST_SORT_H + +#include + +struct list_head; + +void list_sort(void *priv, struct list_head *head, + int (*cmp)(void *priv, struct list_head *a, + struct list_head *b)); +#endif -- cgit v1.2.2 From f6a8c60960bbea378142d1fa1b3d111555ee41c7 Mon Sep 17 00:00:00 2001 From: Russell King - ARM Linux Date: Sun, 29 Nov 2009 15:23:51 +0000 Subject: mtd: Really add ARM pismo support (Commit 7cb777a3d71f9d1f7eb149c7a504d21f24219ae8 (mtd: add ARM pismo support) intended to add this, but seems only to have patched the Makefile without touching Kconfig or providing any code...) The following patch adds support for PISMO modules found on ARM Ltd development platforms. These are MTD modules, and can have a selection of SRAM, flash or DOC devices as described by an on-board I2C EEPROM. We support SRAM and NOR flash devices only by registering appropriate conventional MTD platform devices as children of the 'pismo' device. Signed-off-by: Russell King Signed-off-by: David Woodhouse --- include/linux/mtd/pismo.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 include/linux/mtd/pismo.h (limited to 'include') diff --git a/include/linux/mtd/pismo.h b/include/linux/mtd/pismo.h new file mode 100644 index 000000000000..8dfb7e1421c5 --- /dev/null +++ b/include/linux/mtd/pismo.h @@ -0,0 +1,17 @@ +/* + * PISMO memory driver - http://www.pismoworld.org/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License. + */ +#ifndef __LINUX_MTD_PISMO_H +#define __LINUX_MTD_PISMO_H + +struct pismo_pdata { + void (*set_vpp)(void *, int); + void *vpp_data; + phys_addr_t cs_addrs[5]; +}; + +#endif -- cgit v1.2.2 From cd65c3c7d1081290b7365897c2290a84aa967d4d Mon Sep 17 00:00:00 2001 From: Octavian Purdila Date: Wed, 13 Jan 2010 18:10:36 -0800 Subject: net: fix build erros with CONFIG_BUG=n, CONFIG_GENERIC_BUG=n Fixed build errors introduced by commit 7ad6848c (ip: fix mc_loop checks for tunnels with multicast outer addresses) Signed-off-by: Octavian Purdila Signed-off-by: David S. Miller --- include/net/ip.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/net/ip.h b/include/net/ip.h index d9a0e74d8923..fb63371c07a8 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -338,7 +338,7 @@ static inline int sk_mc_loop(struct sock *sk) return inet6_sk(sk)->mc_loop; #endif } - __WARN(); + WARN_ON(1); return 1; } -- cgit v1.2.2 From 3f09ea4ecdcbcea05541f83e557d6ce2e56626d8 Mon Sep 17 00:00:00 2001 From: Thomas Hellstrom Date: Wed, 13 Jan 2010 22:28:40 +0100 Subject: drm/ttm: Add a swap_notify callback. This is needed for a bugfix in the vmwgfx driver. Drivers may have GPU bindings on buffers that core TTM is not aware of, and TTM may view those buffers as ordinary system memory buffers. Add a notifier to such drivers when TTM is about to move the buffer contents out to swappable memory. The driver must then release any private GPU bindings on those buffers. Signed-off-by: Thomas Hellstrom Signed-off-by: Dave Airlie --- include/drm/ttm/ttm_bo_driver.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include') diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h index ff7664e0c3cd..4c4e0f8375b3 100644 --- a/include/drm/ttm/ttm_bo_driver.h +++ b/include/drm/ttm/ttm_bo_driver.h @@ -353,6 +353,11 @@ struct ttm_bo_driver { /* notify the driver we are taking a fault on this BO * and have reserved it */ void (*fault_reserve_notify)(struct ttm_buffer_object *bo); + + /** + * notify the driver that we're about to swap out this bo + */ + void (*swap_notify) (struct ttm_buffer_object *bo); }; /** -- cgit v1.2.2 From 6d125529c6cbfe570ce3bf9a0728548f087499da Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 24 Dec 2009 06:58:56 -0500 Subject: Fix ACC_MODE() for real commit 5300990c0370e804e49d9a59d928c5d53fb73487 had stepped on a rather nasty mess: definitions of ACC_MODE used to be different. Fixed the resulting breakage, converting them to variant that takes O_... value; all callers have that and it actually simplifies life (see tomoyo part of changes). Signed-off-by: Al Viro --- include/linux/fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/fs.h b/include/linux/fs.h index 9147ca88f253..b1bcb275b596 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2463,7 +2463,7 @@ int proc_nr_files(struct ctl_table *table, int write, int __init get_filesystem_list(char *buf); -#define ACC_MODE(x) ("\000\004\002\006"[(x)&O_ACCMODE]) +#define ACC_MODE(x) ("\004\002\006\006"[(x)&O_ACCMODE]) #define OPEN_FMODE(flag) ((__force fmode_t)((flag + 1) & O_ACCMODE)) #endif /* __KERNEL__ */ -- cgit v1.2.2 From d5f1fb53353edc38da326445267c1df0c9676df2 Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Thu, 14 Jan 2010 10:53:55 +0800 Subject: lib: Introduce strnstr() It differs strstr() in that it limits the length to be searched in the first string. Signed-off-by: Li Zefan LKML-Reference: <4B4E8743.6030805@cn.fujitsu.com> Acked-by: Frederic Weisbecker Signed-off-by: Steven Rostedt --- include/linux/string.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/string.h b/include/linux/string.h index 651839a2a755..a716ee2a8adb 100644 --- a/include/linux/string.h +++ b/include/linux/string.h @@ -72,7 +72,10 @@ static inline __must_check char *strstrip(char *str) } #ifndef __HAVE_ARCH_STRSTR -extern char * strstr(const char *,const char *); +extern char * strstr(const char *, const char *); +#endif +#ifndef __HAVE_ARCH_STRNSTR +extern char * strnstr(const char *, const char *, size_t); #endif #ifndef __HAVE_ARCH_STRLEN extern __kernel_size_t strlen(const char *); -- cgit v1.2.2 From c084ca704a3661bf77690a05bc6bd2c305d87c34 Mon Sep 17 00:00:00 2001 From: Xiaotian Feng Date: Thu, 10 Dec 2009 19:56:45 +0800 Subject: ACPI: don't cond_resched if irq is disabled commit 8bd108d adds preemption point after each opcode parse, then a sleeping function called from invalid context bug was founded during suspend/resume stage. this was fixed in commit abe1dfa by don't cond_resched when irq_disabled. But recent commit 138d156 changes the behaviour to don't cond_resched when in_atomic. This makes the sleeping function called from invalid context bug happen again, which is reported in http://lkml.org/lkml/2009/12/1/371. This patch also fixes http://bugzilla.kernel.org/show_bug.cgi?id=14483 Reported-and-bisected-by: Larry Finger Reported-and-bisected-by: Justin P. Mattock Signed-off-by: Xiaotian Feng Acked-by: Alexey Starikovskiy Signed-off-by: Len Brown --- include/acpi/platform/aclinux.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h index 9d7febde10a1..09469971472f 100644 --- a/include/acpi/platform/aclinux.h +++ b/include/acpi/platform/aclinux.h @@ -152,7 +152,7 @@ static inline void *acpi_os_acquire_object(acpi_cache_t * cache) #include #define ACPI_PREEMPTION_POINT() \ do { \ - if (!in_atomic_preempt_off()) \ + if (!in_atomic_preempt_off() && !irqs_disabled()) \ cond_resched(); \ } while (0) -- cgit v1.2.2 From d00c362f1b0ff54161e0a42b4554ac621a9ef92d Mon Sep 17 00:00:00 2001 From: Jarek Poplawski Date: Sat, 16 Jan 2010 01:04:04 -0800 Subject: ax25: netrom: rose: Fix timer oopses Wrong ax25_cb refcounting in ax25_send_frame() and by its callers can cause timer oopses (first reported with 2.6.29.6 kernel). Fixes: http://bugzilla.kernel.org/show_bug.cgi?id=14905 Reported-by: Bernard Pidoux Tested-by: Bernard Pidoux Signed-off-by: Jarek Poplawski Signed-off-by: David S. Miller --- include/net/netrom.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/net/netrom.h b/include/net/netrom.h index 15696b1fd30f..ab170a60e7d3 100644 --- a/include/net/netrom.h +++ b/include/net/netrom.h @@ -132,6 +132,8 @@ static __inline__ void nr_node_put(struct nr_node *nr_node) static __inline__ void nr_neigh_put(struct nr_neigh *nr_neigh) { if (atomic_dec_and_test(&nr_neigh->refcount)) { + if (nr_neigh->ax25) + ax25_cb_put(nr_neigh->ax25); kfree(nr_neigh->digipeat); kfree(nr_neigh); } -- cgit v1.2.2 From 7e105057a34c83cea542dacc55ff0528bce67afa Mon Sep 17 00:00:00 2001 From: Stefani Seibold Date: Fri, 15 Jan 2010 17:01:02 -0800 Subject: kfifo: fix kfifo_out_locked race bug Fix a wrong optimization in include/linux/kfifo.h which could cause a race in kfifo_out_locked. Signed-off-by: Stefani Seibold Reported-by: Johan Hovold Cc: Pete Zaitcev Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kfifo.h | 7 ------- 1 file changed, 7 deletions(-) (limited to 'include') diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h index 7c6b32a1421c..c4ac88b3c302 100644 --- a/include/linux/kfifo.h +++ b/include/linux/kfifo.h @@ -228,13 +228,6 @@ static inline __must_check unsigned int kfifo_out_locked(struct kfifo *fifo, ret = kfifo_out(fifo, to, n); - /* - * optimization: if the FIFO is empty, set the indices to 0 - * so we don't wrap the next time - */ - if (kfifo_is_empty(fifo)) - kfifo_reset(fifo); - spin_unlock_irqrestore(lock, flags); return ret; -- cgit v1.2.2 From 2427b8e3eaea3719e53bbed7b3375382c3aa6f13 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Fri, 15 Jan 2010 17:01:11 -0800 Subject: tty.h: make tty_port_get() static inline I get a few dozen of these warnings when using gcc (GCC) 4.4.1 20090725 (Red Hat 4.4.1-2): In file included from mmotm-2010-0113-1217/init/do_mounts.c:5: mmotm-2010-0113-1217/include/linux/tty.h: In function 'tty_port_get': mmotm-2010-0113-1217/include/linux/tty.h:469: warning: '______f' is static but declared in inline function 'tty_port_get' which is not static so make the function static inline. [akpm@linux-foundation.org: may as well convert tty_port_users() also] Signed-off-by: Randy Dunlap Cc: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/tty.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/tty.h b/include/linux/tty.h index ef3a2947b102..6abfcf5b5887 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -464,7 +464,7 @@ extern int tty_port_alloc_xmit_buf(struct tty_port *port); extern void tty_port_free_xmit_buf(struct tty_port *port); extern void tty_port_put(struct tty_port *port); -extern inline struct tty_port *tty_port_get(struct tty_port *port) +static inline struct tty_port *tty_port_get(struct tty_port *port) { if (port) kref_get(&port->kref); @@ -486,7 +486,7 @@ extern void tty_port_close(struct tty_port *port, struct tty_struct *tty, struct file *filp); extern int tty_port_open(struct tty_port *port, struct tty_struct *tty, struct file *filp); -extern inline int tty_port_users(struct tty_port *port) +static inline int tty_port_users(struct tty_port *port) { return port->count + port->blocked_open; } -- cgit v1.2.2 From 8ecc2951534af10e04ddb5e5ff5c6d217b79f5c2 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Fri, 15 Jan 2010 17:01:12 -0800 Subject: kfifo: use void * pointers for user buffers The pointers to user buffers are currently unsigned char *, which requires a lot of casting in the caller for any non-char typed buffers. Use void * instead. Signed-off-by: Andi Kleen Acked-by: Stefani Seibold Cc: Roland Dreier Cc: Dmitry Torokhov Cc: Andy Walls Cc: Vikram Dhillon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kfifo.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'include') diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h index c4ac88b3c302..6fb495ea956a 100644 --- a/include/linux/kfifo.h +++ b/include/linux/kfifo.h @@ -104,15 +104,15 @@ union { \ #undef __kfifo_initializer -extern void kfifo_init(struct kfifo *fifo, unsigned char *buffer, +extern void kfifo_init(struct kfifo *fifo, void *buffer, unsigned int size); extern __must_check int kfifo_alloc(struct kfifo *fifo, unsigned int size, gfp_t gfp_mask); extern void kfifo_free(struct kfifo *fifo); extern unsigned int kfifo_in(struct kfifo *fifo, - const unsigned char *from, unsigned int len); + const void *from, unsigned int len); extern __must_check unsigned int kfifo_out(struct kfifo *fifo, - unsigned char *to, unsigned int len); + void *to, unsigned int len); /** * kfifo_reset - removes the entire FIFO contents @@ -194,7 +194,7 @@ static inline __must_check unsigned int kfifo_avail(struct kfifo *fifo) * bytes copied. */ static inline unsigned int kfifo_in_locked(struct kfifo *fifo, - const unsigned char *from, unsigned int n, spinlock_t *lock) + const void *from, unsigned int n, spinlock_t *lock) { unsigned long flags; unsigned int ret; @@ -219,7 +219,7 @@ static inline unsigned int kfifo_in_locked(struct kfifo *fifo, * @to buffer and returns the number of copied bytes. */ static inline __must_check unsigned int kfifo_out_locked(struct kfifo *fifo, - unsigned char *to, unsigned int n, spinlock_t *lock) + void *to, unsigned int n, spinlock_t *lock) { unsigned long flags; unsigned int ret; -- cgit v1.2.2 From 64ce1037c5434b1d036cd99ecaee6e00496bc2e9 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Fri, 15 Jan 2010 17:01:15 -0800 Subject: kfifo: sanitize *_user error handling Right now for kfifo_*_user it's not easily possible to distingush between a user copy failing and the FIFO not containing enough data. The problem is that both conditions are multiplexed into the same return code. Avoid this by moving the "copy length" into a separate output parameter and only return 0/-EFAULT in the main return value. I didn't fully adapt the weird "record" variants, those seem to be unused anyways and were rather messy (should they be just removed?) I would appreciate some double checking if I did all the conversions correctly. Signed-off-by: Andi Kleen Cc: Stefani Seibold Cc: Roland Dreier Cc: Dmitry Torokhov Cc: Andy Walls Cc: Vikram Dhillon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kfifo.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include') diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h index 6fb495ea956a..86ad50a900c8 100644 --- a/include/linux/kfifo.h +++ b/include/linux/kfifo.h @@ -235,11 +235,11 @@ static inline __must_check unsigned int kfifo_out_locked(struct kfifo *fifo, extern void kfifo_skip(struct kfifo *fifo, unsigned int len); -extern __must_check unsigned int kfifo_from_user(struct kfifo *fifo, - const void __user *from, unsigned int n); +extern __must_check int kfifo_from_user(struct kfifo *fifo, + const void __user *from, unsigned int n, unsigned *lenout); -extern __must_check unsigned int kfifo_to_user(struct kfifo *fifo, - void __user *to, unsigned int n); +extern __must_check int kfifo_to_user(struct kfifo *fifo, + void __user *to, unsigned int n, unsigned *lenout); /* * __kfifo_add_out internal helper function for updating the out offset -- cgit v1.2.2 From a5b9e2c1063046421ce01dcf5ddd7ec12567f3e1 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Fri, 15 Jan 2010 17:01:16 -0800 Subject: kfifo: add kfifo_out_peek In some upcoming code it's useful to peek into a FIFO without permanentely removing data. This patch implements a new kfifo_out_peek() to do this. Signed-off-by: Andi Kleen Acked-by: Stefani Seibold Cc: Roland Dreier Cc: Dmitry Torokhov Cc: Andy Walls Cc: Vikram Dhillon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kfifo.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include') diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h index 86ad50a900c8..7ad6d32dd673 100644 --- a/include/linux/kfifo.h +++ b/include/linux/kfifo.h @@ -113,6 +113,9 @@ extern unsigned int kfifo_in(struct kfifo *fifo, const void *from, unsigned int len); extern __must_check unsigned int kfifo_out(struct kfifo *fifo, void *to, unsigned int len); +extern __must_check unsigned int kfifo_out_peek(struct kfifo *fifo, + void *to, unsigned int len, unsigned offset); + /** * kfifo_reset - removes the entire FIFO contents -- cgit v1.2.2 From d994ffc247f7c4a48b848f10c4c01c9b06411ada Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Fri, 15 Jan 2010 17:01:17 -0800 Subject: kfifo: add kfifo_initialized Simple inline that checks if kfifo_init() has been executed on a fifo. This is useful for walking all per CPU fifos, when some of them might not have been brought up yet. Signed-off-by: Andi Kleen Acked-by: Stefani Seibold Cc: Roland Dreier Cc: Dmitry Torokhov Cc: Andy Walls Cc: Vikram Dhillon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kfifo.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include') diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h index 7ad6d32dd673..c8618243ca5a 100644 --- a/include/linux/kfifo.h +++ b/include/linux/kfifo.h @@ -116,6 +116,16 @@ extern __must_check unsigned int kfifo_out(struct kfifo *fifo, extern __must_check unsigned int kfifo_out_peek(struct kfifo *fifo, void *to, unsigned int len, unsigned offset); +/** + * kfifo_initialized - Check if kfifo is initialized. + * @fifo: fifo to check + * Return %true if FIFO is initialized, otherwise %false. + * Assumes the fifo was 0 before. + */ +static inline bool kfifo_initialized(struct kfifo *fifo) +{ + return fifo->buffer != 0; +} /** * kfifo_reset - removes the entire FIFO contents -- cgit v1.2.2 From 5dab600e6a153ceb64832f608069e6c08185411a Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Fri, 15 Jan 2010 17:01:17 -0800 Subject: kfifo: document everywhere that size has to be power of two On my first try using them I missed that the fifos need to be power of two, resulting in a runtime bug. Document that requirement everywhere (and fix one grammar bug) Signed-off-by: Andi Kleen Acked-by: Stefani Seibold Cc: Roland Dreier Cc: Dmitry Torokhov Cc: Andy Walls Cc: Vikram Dhillon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kfifo.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h index c8618243ca5a..6f6c5f300af6 100644 --- a/include/linux/kfifo.h +++ b/include/linux/kfifo.h @@ -67,7 +67,7 @@ struct kfifo { /** * DECLARE_KFIFO - macro to declare a kfifo and the associated buffer * @name: name of the declared kfifo datatype - * @size: size of the fifo buffer + * @size: size of the fifo buffer. Must be a power of two. * * Note1: the macro can be used inside struct or union declaration * Note2: the macro creates two objects: @@ -91,7 +91,7 @@ union { \ /** * DEFINE_KFIFO - macro to define and initialize a kfifo * @name: name of the declared kfifo datatype - * @size: size of the fifo buffer + * @size: size of the fifo buffer. Must be a power of two. * * Note1: the macro can be used for global and local kfifo data type variables * Note2: the macro creates two objects: -- cgit v1.2.2 From cc8ef6eb21e964b1c5eb97b2d0e8ac9893e1bf86 Mon Sep 17 00:00:00 2001 From: Roland Dreier Date: Fri, 15 Jan 2010 17:01:22 -0800 Subject: kernel.h: add BUILD_BUG_ON_NOT_POWER_OF_2() Add BUILD_BUG_ON_NOT_POWER_OF_2() When code relies on a constant being a power of 2: #define FOO 512 /* must be a power of 2 */ it would be nice to be able to do: BUILD_BUG_ON(!is_power_of_2(FOO)); However applying an inline function does not result in a compile-time constant that can be used with BUILD_BUG_ON(), so trying that gives results in: error: bit-field '' width not an integer constant As suggested by akpm, rather than monkeying around with is_power_of_2() and risking gcc warts about constant expressions, just create a macro BUILD_BUG_ON_NOT_POWER_OF_2() to encapsulate this common requirement. Signed-off-by: Roland Dreier Cc: Bart Van Assche Cc: David Dillow Cc: "Robert P. J. Day" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kernel.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 3fc9f5aab5f8..328bca609b9b 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -734,6 +734,10 @@ struct sysinfo { /* Force a compilation error if condition is constant and true */ #define MAYBE_BUILD_BUG_ON(cond) ((void)sizeof(char[1 - 2 * !!(cond)])) +/* Force a compilation error if a constant expression is not a power of 2 */ +#define BUILD_BUG_ON_NOT_POWER_OF_2(n) \ + BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0)) + /* Force a compilation error if condition is true, but also produce a result (of value 0 and type size_t), so the expression can be used e.g. in a structure initializer (or where-ever else comma expressions -- cgit v1.2.2 From 1e2ae599d37e60958c03ca5e46b1f657619a30cd Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 15 Jan 2010 17:01:33 -0800 Subject: nommu: struct vm_region's vm_usage count need not be atomic The vm_usage count field in struct vm_region does not need to be atomic as it's only even modified whilst nommu_region_sem is write locked. Signed-off-by: David Howells Acked-by: Al Viro Cc: Greg Ungerer Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm_types.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 84d020bed083..80cfa78a8cf6 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -122,7 +122,7 @@ struct vm_region { unsigned long vm_pgoff; /* the offset in vm_file corresponding to vm_start */ struct file *vm_file; /* the backing file or NULL */ - atomic_t vm_usage; /* region usage count */ + int vm_usage; /* region usage count (access under nommu_region_sem) */ bool vm_icache_flushed : 1; /* true if the icache has been flushed for * this region */ }; -- cgit v1.2.2 From efc1a3b16930c41d64ffefde16b87d82f603a8a0 Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 15 Jan 2010 17:01:35 -0800 Subject: nommu: don't need get_unmapped_area() for NOMMU get_unmapped_area() is unnecessary for NOMMU as no-one calls it. Signed-off-by: David Howells Acked-by: Al Viro Cc: Greg Ungerer Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm_types.h | 2 ++ include/linux/sched.h | 7 +++++-- 2 files changed, 7 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 80cfa78a8cf6..36f96271306c 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -205,10 +205,12 @@ struct mm_struct { struct vm_area_struct * mmap; /* list of VMAs */ struct rb_root mm_rb; struct vm_area_struct * mmap_cache; /* last find_vma result */ +#ifdef CONFIG_MMU unsigned long (*get_unmapped_area) (struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags); void (*unmap_area) (struct mm_struct *mm, unsigned long addr); +#endif unsigned long mmap_base; /* base of mmap area */ unsigned long task_size; /* size of task vm space */ unsigned long cached_hole_size; /* if non-zero, the largest hole below free_area_cache */ diff --git a/include/linux/sched.h b/include/linux/sched.h index 8d4991be9d53..6f7bba93929b 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -377,6 +377,8 @@ extern int sysctl_max_map_count; #include +#ifdef CONFIG_MMU +extern void arch_pick_mmap_layout(struct mm_struct *mm); extern unsigned long arch_get_unmapped_area(struct file *, unsigned long, unsigned long, unsigned long, unsigned long); @@ -386,6 +388,9 @@ arch_get_unmapped_area_topdown(struct file *filp, unsigned long addr, unsigned long flags); extern void arch_unmap_area(struct mm_struct *, unsigned long); extern void arch_unmap_area_topdown(struct mm_struct *, unsigned long); +#else +static inline void arch_pick_mmap_layout(struct mm_struct *mm) {} +#endif #if USE_SPLIT_PTLOCKS /* @@ -2491,8 +2496,6 @@ static inline void set_task_cpu(struct task_struct *p, unsigned int cpu) #endif /* CONFIG_SMP */ -extern void arch_pick_mmap_layout(struct mm_struct *mm); - #ifdef CONFIG_TRACING extern void __trace_special(void *__tr, void *__data, -- cgit v1.2.2 From 7e6608724c640924aad1d556d17df33ebaa6124d Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 15 Jan 2010 17:01:39 -0800 Subject: nommu: fix shared mmap after truncate shrinkage problems Fix a problem in NOMMU mmap with ramfs whereby a shared mmap can happen over the end of a truncation. The problem is that ramfs_nommu_check_mappings() checks that the reduced file size against the VMA tree, but not the vm_region tree. The following sequence of events can cause the problem: fd = open("/tmp/x", O_RDWR|O_TRUNC|O_CREAT, 0600); ftruncate(fd, 32 * 1024); a = mmap(NULL, 32 * 1024, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); b = mmap(NULL, 16 * 1024, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); munmap(a, 32 * 1024); ftruncate(fd, 16 * 1024); c = mmap(NULL, 32 * 1024, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); Mapping 'a' creates a vm_region covering 32KB of the file. Mapping 'b' sees that the vm_region from 'a' is covering the region it wants and so shares it, pinning it in memory. Mapping 'a' then goes away and the file is truncated to the end of VMA 'b'. However, the region allocated by 'a' is still in effect, and has _not_ been reduced. Mapping 'c' is then created, and because there's a vm_region covering the desired region, get_unmapped_area() is _not_ called to repeat the check, and the mapping is granted, even though the pages from the latter half of the mapping have been discarded. However: d = mmap(NULL, 16 * 1024, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); Mapping 'd' should work, and should end up sharing the region allocated by 'a'. To deal with this, we shrink the vm_region struct during the truncation, lest do_mmap_pgoff() take it as licence to share the full region automatically without calling the get_unmapped_area() file op again. Signed-off-by: David Howells Acked-by: Al Viro Cc: Greg Ungerer Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/mm.h b/include/linux/mm.h index 2265f28eb47a..60c467bfbabd 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1089,6 +1089,7 @@ extern void zone_pcp_update(struct zone *zone); /* nommu.c */ extern atomic_long_t mmap_pages_allocated; +extern int nommu_shrink_inode_mappings(struct inode *, size_t, size_t); /* prio_tree.c */ void vma_prio_tree_add(struct vm_area_struct *, struct vm_area_struct *old); -- cgit v1.2.2 From eda05a28ec52be40086400a1b606d211276f0e41 Mon Sep 17 00:00:00 2001 From: Harish Zunjarrao Date: Tue, 12 Jan 2010 12:59:50 -0800 Subject: [SCSI] fc-transport: Use packed modifier for fc_bsg_request structure. The 32bit kernel does not add padding bytes in the fc_bsg_request structure whereas the 64bit kernel adds padding bytes in the fc_bsg_request structure. Due to this, structure elements gets mismatched with 32bit application and 64bit kernel.To resolve this, used packed modifier to avoid adding padding bytes. Signed-off-by: Giridhar Malavali Signed-off-by: James Bottomley --- include/scsi/scsi_bsg_fc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/scsi/scsi_bsg_fc.h b/include/scsi/scsi_bsg_fc.h index a4b233318179..91a4e4ff9a9b 100644 --- a/include/scsi/scsi_bsg_fc.h +++ b/include/scsi/scsi_bsg_fc.h @@ -292,7 +292,7 @@ struct fc_bsg_request { struct fc_bsg_rport_els r_els; struct fc_bsg_rport_ct r_ct; } rqst_data; -}; +} __attribute__((packed)); /* response (request sense data) structure of the sg_io_v4 */ -- cgit v1.2.2 From 9dffe2a32b0deef52605d50527c0d240b15cabf7 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 4 Jan 2010 18:05:00 +0000 Subject: mfd: Correct WM835x ISINK ramp time defines The constants used to specify ISINK ramp times for WM835x had the wrong shifts so that the on times applied to the off ramp and vice versa. The masks for the bitfields are correct. Signed-off-by: Mark Brown Cc: stable@kernel.org Signed-off-by: Samuel Ortiz --- include/linux/mfd/wm8350/pmic.h | 28 ++++++++++++++-------------- 1 file changed, 14 insertions(+), 14 deletions(-) (limited to 'include') diff --git a/include/linux/mfd/wm8350/pmic.h b/include/linux/mfd/wm8350/pmic.h index be3264e286e0..e786fe9841ef 100644 --- a/include/linux/mfd/wm8350/pmic.h +++ b/include/linux/mfd/wm8350/pmic.h @@ -666,20 +666,20 @@ #define WM8350_ISINK_FLASH_DUR_64MS (1 << 8) #define WM8350_ISINK_FLASH_DUR_96MS (2 << 8) #define WM8350_ISINK_FLASH_DUR_1024MS (3 << 8) -#define WM8350_ISINK_FLASH_ON_INSTANT (0 << 4) -#define WM8350_ISINK_FLASH_ON_0_25S (1 << 4) -#define WM8350_ISINK_FLASH_ON_0_50S (2 << 4) -#define WM8350_ISINK_FLASH_ON_1_00S (3 << 4) -#define WM8350_ISINK_FLASH_ON_1_95S (1 << 4) -#define WM8350_ISINK_FLASH_ON_3_91S (2 << 4) -#define WM8350_ISINK_FLASH_ON_7_80S (3 << 4) -#define WM8350_ISINK_FLASH_OFF_INSTANT (0 << 0) -#define WM8350_ISINK_FLASH_OFF_0_25S (1 << 0) -#define WM8350_ISINK_FLASH_OFF_0_50S (2 << 0) -#define WM8350_ISINK_FLASH_OFF_1_00S (3 << 0) -#define WM8350_ISINK_FLASH_OFF_1_95S (1 << 0) -#define WM8350_ISINK_FLASH_OFF_3_91S (2 << 0) -#define WM8350_ISINK_FLASH_OFF_7_80S (3 << 0) +#define WM8350_ISINK_FLASH_ON_INSTANT (0 << 0) +#define WM8350_ISINK_FLASH_ON_0_25S (1 << 0) +#define WM8350_ISINK_FLASH_ON_0_50S (2 << 0) +#define WM8350_ISINK_FLASH_ON_1_00S (3 << 0) +#define WM8350_ISINK_FLASH_ON_1_95S (1 << 0) +#define WM8350_ISINK_FLASH_ON_3_91S (2 << 0) +#define WM8350_ISINK_FLASH_ON_7_80S (3 << 0) +#define WM8350_ISINK_FLASH_OFF_INSTANT (0 << 4) +#define WM8350_ISINK_FLASH_OFF_0_25S (1 << 4) +#define WM8350_ISINK_FLASH_OFF_0_50S (2 << 4) +#define WM8350_ISINK_FLASH_OFF_1_00S (3 << 4) +#define WM8350_ISINK_FLASH_OFF_1_95S (1 << 4) +#define WM8350_ISINK_FLASH_OFF_3_91S (2 << 4) +#define WM8350_ISINK_FLASH_OFF_7_80S (3 << 4) /* * Regulator Interrupts. -- cgit v1.2.2 From 64e8867ba8098b69889c1af94997a5ba2348fb26 Mon Sep 17 00:00:00 2001 From: Ian Molton Date: Wed, 6 Jan 2010 13:51:48 +0100 Subject: mfd: tmio_mmc hardware abstraction for CNF area This patch abstracts out the CNF area code from tmio_mmc which is not present in all hardware that can use this driver. This is required so that we can support non-toshiba based hardware. ASIC3 support by Philipp Zabel Signed-off-by: Ian Molton Signed-off-by: Magnus Damm Signed-off-by: Samuel Ortiz --- include/linux/mfd/tmio.h | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) (limited to 'include') diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h index 6b9c5d06690c..9cb1834deffa 100644 --- a/include/linux/mfd/tmio.h +++ b/include/linux/mfd/tmio.h @@ -2,6 +2,8 @@ #define MFD_TMIO_H #include +#include +#include #define tmio_ioread8(addr) readb(addr) #define tmio_ioread16(addr) readw(addr) @@ -18,11 +20,48 @@ writew((val) >> 16, (addr) + 2); \ } while (0) +#define CNF_CMD 0x04 +#define CNF_CTL_BASE 0x10 +#define CNF_INT_PIN 0x3d +#define CNF_STOP_CLK_CTL 0x40 +#define CNF_GCLK_CTL 0x41 +#define CNF_SD_CLK_MODE 0x42 +#define CNF_PIN_STATUS 0x44 +#define CNF_PWR_CTL_1 0x48 +#define CNF_PWR_CTL_2 0x49 +#define CNF_PWR_CTL_3 0x4a +#define CNF_CARD_DETECT_MODE 0x4c +#define CNF_SD_SLOT 0x50 +#define CNF_EXT_GCLK_CTL_1 0xf0 +#define CNF_EXT_GCLK_CTL_2 0xf1 +#define CNF_EXT_GCLK_CTL_3 0xf9 +#define CNF_SD_LED_EN_1 0xfa +#define CNF_SD_LED_EN_2 0xfe + +#define SDCREN 0x2 /* Enable access to MMC CTL regs. (flag in COMMAND_REG)*/ + +#define sd_config_write8(base, shift, reg, val) \ + tmio_iowrite8((val), (base) + ((reg) << (shift))) +#define sd_config_write16(base, shift, reg, val) \ + tmio_iowrite16((val), (base) + ((reg) << (shift))) +#define sd_config_write32(base, shift, reg, val) \ + do { \ + tmio_iowrite16((val), (base) + ((reg) << (shift))); \ + tmio_iowrite16((val) >> 16, (base) + ((reg + 2) << (shift))); \ + } while (0) + +int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base); +int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base); +void tmio_core_mmc_pwr(void __iomem *cnf, int shift, int state); +void tmio_core_mmc_clk_div(void __iomem *cnf, int shift, int state); + /* * data for the MMC controller */ struct tmio_mmc_data { const unsigned int hclk; + void (*set_pwr)(struct platform_device *host, int state); + void (*set_clk_div)(struct platform_device *host, int state); }; /* -- cgit v1.2.2 From ec51b7f538c440bfa5a4d538133c659071c02155 Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Tue, 19 Jan 2010 00:27:58 -0800 Subject: Input: ad7879 - support auxiliary GPIOs via gpiolib Drop the simple fancy sysfs hooks for the aux GPIOs and expose these via the gpiolib interface so that other drivers can use them. Signed-off-by: Michael Hennerich Signed-off-by: Mike Frysinger Signed-off-by: Dmitry Torokhov --- include/linux/spi/ad7879.h | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'include') diff --git a/include/linux/spi/ad7879.h b/include/linux/spi/ad7879.h index 4231104c9afa..6334cee1a3be 100644 --- a/include/linux/spi/ad7879.h +++ b/include/linux/spi/ad7879.h @@ -28,8 +28,12 @@ struct ad7879_platform_data { * 1 = 4, 2 = 8, 3 = 16 (median > averaging) */ u8 median; - /* 1 = AUX/VBAT/GPIO set to GPIO Output */ - u8 gpio_output; - /* Initial GPIO pin state (valid if gpio_output = 1) */ - u8 gpio_default; + /* 1 = AUX/VBAT/GPIO export GPIO to gpiolib + * requires CONFIG_GPIOLIB + */ + bool gpio_export; + /* identifies the first GPIO number handled by this chip; + * or, if negative, requests dynamic ID allocation. + */ + s32 gpio_base; }; -- cgit v1.2.2 From 4f9c85a1b03bfa5c0a0d8488a3a7766f3c9fb756 Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Mon, 18 Jan 2010 05:37:16 +0000 Subject: phylib: Move workqueue initialization to a proper place commit 541cd3ee00a4fe975b22fac6a3bc846bacef37f7 ("phylib: Fix deadlock on resume") caused TI DaVinci EMAC ethernet driver to oops upon resume: PM: resume of devices complete after 237.098 msecs Restarting tasks ... done. kernel BUG at kernel/workqueue.c:354! Unable to handle kernel NULL pointer dereference at virtual address 00000000 [...] Backtrace: [] (__bug+0x0/0x2c) from [] (queue_delayed_work_on+0x74/0xf8) [] (queue_delayed_work_on+0x0/0xf8) from [] (queue_delayed_work+0x2c/0x30) The oops pops up because TI DaVinci EMAC driver detaches PHY on suspend and attaches it back on resume. Attaching makes phylib call phy_start_machine() that initializes a workqueue. On the other hand, PHY's resume routine will call phy_start_machine() again, and that will cause the oops since we just destroyed the already scheduled workqueue. This patch fixes the issue by moving workqueue initialization to phy_device_create(). p.s. We don't see this oops with ucc_geth and gianfar drivers because they perform a fine-grained suspend, i.e. they just stop the PHYs without detaching. Reported-by: Sekhar Nori Signed-off-by: Anton Vorontsov Tested-by: Sekhar Nori Signed-off-by: David S. Miller --- include/linux/phy.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/phy.h b/include/linux/phy.h index 7968defd2fa7..6a7eb402165d 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -485,6 +485,7 @@ void phy_driver_unregister(struct phy_driver *drv); int phy_driver_register(struct phy_driver *new_driver); void phy_prepare_link(struct phy_device *phydev, void (*adjust_link)(struct net_device *)); +void phy_state_machine(struct work_struct *work); void phy_start_machine(struct phy_device *phydev, void (*handler)(struct net_device *)); void phy_stop_machine(struct phy_device *phydev); -- cgit v1.2.2 From 04a723ea9c53ba608b0411aa36948bb57c51a08e Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Wed, 6 Jan 2010 10:16:51 -0800 Subject: USB: Fix duplicate sysfs problem after device reset. Borislav Petkov reports issues with duplicate sysfs endpoint files after a resume from a hibernate. It turns out that the code to support alternate settings under xHCI has issues when a device with a non-default alternate setting is reset during the hibernate: [ 427.681810] Restarting tasks ... [ 427.681995] hub 1-0:1.0: state 7 ports 6 chg 0004 evt 0000 [ 427.682019] usb usb3: usb resume [ 427.682030] ohci_hcd 0000:00:12.0: wakeup root hub [ 427.682191] hub 1-0:1.0: port 2, status 0501, change 0000, 480 Mb/s [ 427.682205] usb 1-2: usb wakeup-resume [ 427.682226] usb 1-2: finish reset-resume [ 427.682886] done. [ 427.734658] ehci_hcd 0000:00:12.2: port 2 high speed [ 427.734663] ehci_hcd 0000:00:12.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT [ 427.746682] hub 3-0:1.0: hub_reset_resume [ 427.746693] hub 3-0:1.0: trying to enable port power on non-switchable hub [ 427.786715] usb 1-2: reset high speed USB device using ehci_hcd and address 2 [ 427.839653] ehci_hcd 0000:00:12.2: port 2 high speed [ 427.839666] ehci_hcd 0000:00:12.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT [ 427.847717] ohci_hcd 0000:00:12.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS [ 427.915497] hub 1-2:1.0: remove_intf_ep_devs: if: ffff88022f9e8800 ->ep_devs_created: 1 [ 427.915774] hub 1-2:1.0: remove_intf_ep_devs: bNumEndpoints: 1 [ 427.915934] hub 1-2:1.0: if: ffff88022f9e8800: endpoint devs removed. [ 427.916158] hub 1-2:1.0: create_intf_ep_devs: if: ffff88022f9e8800 ->ep_devs_created: 0, ->unregistering: 0 [ 427.916434] hub 1-2:1.0: create_intf_ep_devs: bNumEndpoints: 1 [ 427.916609] ep_81: create, parent hub [ 427.916632] ------------[ cut here ]------------ [ 427.916644] WARNING: at fs/sysfs/dir.c:477 sysfs_add_one+0x82/0x96() [ 427.916649] Hardware name: System Product Name [ 427.916653] sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/ep_81' [ 427.916658] Modules linked in: binfmt_misc kvm_amd kvm powernow_k8 cpufreq_ondemand cpufreq_powersave cpufreq_userspace freq_table cpufreq_conservative ipv6 vfat fat +8250_pnp 8250 pcspkr ohci_hcd serial_core k10temp edac_core [ 427.916694] Pid: 278, comm: khubd Not tainted 2.6.33-rc2-00187-g08d869a-dirty #13 [ 427.916699] Call Trace: The problem is caused by a mismatch between the USB core's view of the device state and the USB device and xHCI host's view of the device state. After the device reset and re-configuration, the device and the xHCI host think they are using alternate setting 0 of all interfaces. However, the USB core keeps track of the old state, which may include non-zero alternate settings. It uses intf->cur_altsetting to keep the endpoint sysfs files for the old state across the reset. The bandwidth allocation functions need to know what the xHCI host thinks the current alternate settings are, so original patch set intf->cur_altsetting to the alternate setting 0. This caused duplicate endpoint files to be created. The solution is to not set intf->cur_altsetting before calling usb_set_interface() in usb_reset_and_verify_device(). Instead, we add a new flag to struct usb_interface to tell usb_hcd_alloc_bandwidth() to use alternate setting 0 as the currently installed alternate setting. Signed-off-by: Sarah Sharp Tested-by: Borislav Petkov Cc: Alan Stern Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/usb.h b/include/linux/usb.h index e101a2d04d75..d7ace1b80f09 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -192,6 +192,7 @@ struct usb_interface { unsigned needs_altsetting0:1; /* switch to altsetting 0 is pending */ unsigned needs_binding:1; /* needs delayed unbind/rebind */ unsigned reset_running:1; + unsigned resetting_device:1; /* true: bandwidth alloc after reset */ struct device dev; /* interface specific device info */ struct device *usb_dev; -- cgit v1.2.2 From 50b926e439620c469565e8be0f28be78f5fca1ce Mon Sep 17 00:00:00 2001 From: Mike Galbraith Date: Mon, 4 Jan 2010 14:44:56 +0100 Subject: sched: Fix vmark regression on big machines SD_PREFER_SIBLING is set at the CPU domain level if power saving isn't enabled, leading to many cache misses on large machines as we traverse looking for an idle shared cache to wake to. Change the enabler of select_idle_sibling() to SD_SHARE_PKG_RESOURCES, and enable same at the sibling domain level. Reported-by: Lin Ming Signed-off-by: Mike Galbraith Signed-off-by: Peter Zijlstra LKML-Reference: <1262612696.15495.15.camel@marge.simson.net> Signed-off-by: Ingo Molnar --- include/linux/topology.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/topology.h b/include/linux/topology.h index 57e63579bfdd..5b81156780b1 100644 --- a/include/linux/topology.h +++ b/include/linux/topology.h @@ -99,7 +99,7 @@ int arch_update_cpu_topology(void); | 1*SD_WAKE_AFFINE \ | 1*SD_SHARE_CPUPOWER \ | 0*SD_POWERSAVINGS_BALANCE \ - | 0*SD_SHARE_PKG_RESOURCES \ + | 1*SD_SHARE_PKG_RESOURCES \ | 0*SD_SERIALIZE \ | 0*SD_PREFER_SIBLING \ , \ -- cgit v1.2.2 From 92b6759857ea3ad19bc6871044e373f6251841d3 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 18 Jan 2010 14:02:16 +0100 Subject: perf: Change the is_software_event() definition The is_software_event() definition always confuses me because its an exclusive expression, make it an inclusive one. Signed-off-by: Peter Zijlstra LKML-Reference: Signed-off-by: Ingo Molnar --- include/linux/perf_event.h | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index c66b34f75eea..8fa71874113f 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -814,9 +814,14 @@ extern int perf_event_overflow(struct perf_event *event, int nmi, */ static inline int is_software_event(struct perf_event *event) { - return (event->attr.type != PERF_TYPE_RAW) && - (event->attr.type != PERF_TYPE_HARDWARE) && - (event->attr.type != PERF_TYPE_HW_CACHE); + switch (event->attr.type) { + case PERF_TYPE_SOFTWARE: + case PERF_TYPE_TRACEPOINT: + /* for now the breakpoint stuff also works as software event */ + case PERF_TYPE_BREAKPOINT: + return 1; + } + return 0; } extern atomic_t perf_swevent_enabled[PERF_COUNT_SW_MAX]; -- cgit v1.2.2 From e071041be037eca208b62b84469a06bdfc692bea Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Sat, 23 Jan 2010 13:37:10 +0000 Subject: netns xfrm: fix "ip xfrm state|policy count" misreport "ip xfrm state|policy count" report SA/SP count from init_net, not from netns of caller process. Signed-off-by: Alexey Dobriyan Signed-off-by: Herbert Xu Signed-off-by: David S. Miller --- include/net/xfrm.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/net/xfrm.h b/include/net/xfrm.h index 6d85861ab990..60c27706e7b9 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -1367,8 +1367,8 @@ struct xfrmk_spdinfo { extern struct xfrm_state *xfrm_find_acq_byseq(struct net *net, u32 seq); extern int xfrm_state_delete(struct xfrm_state *x); extern int xfrm_state_flush(struct net *net, u8 proto, struct xfrm_audit *audit_info); -extern void xfrm_sad_getinfo(struct xfrmk_sadinfo *si); -extern void xfrm_spd_getinfo(struct xfrmk_spdinfo *si); +extern void xfrm_sad_getinfo(struct net *net, struct xfrmk_sadinfo *si); +extern void xfrm_spd_getinfo(struct net *net, struct xfrmk_spdinfo *si); extern int xfrm_replay_check(struct xfrm_state *x, struct sk_buff *skb, __be32 seq); extern void xfrm_replay_advance(struct xfrm_state *x, __be32 seq); -- cgit v1.2.2 From d7c7544c3d5f59033d1bf3236bc7b289f5f26b75 Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Sun, 24 Jan 2010 22:47:53 -0800 Subject: netns xfrm: deal with dst entries in netns GC is non-existent in netns, so after you hit GC threshold, no new dst entries will be created until someone triggers cleanup in init_net. Make xfrm4_dst_ops and xfrm6_dst_ops per-netns. This is not done in a generic way, because it woule waste (AF_MAX - 2) * sizeof(struct dst_ops) bytes per-netns. Reorder GC threshold initialization so it'd be done before registering XFRM policies. Signed-off-by: Alexey Dobriyan Signed-off-by: David S. Miller --- include/net/netns/xfrm.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include') diff --git a/include/net/netns/xfrm.h b/include/net/netns/xfrm.h index 56f8e5585df7..74f119a2829a 100644 --- a/include/net/netns/xfrm.h +++ b/include/net/netns/xfrm.h @@ -5,6 +5,7 @@ #include #include #include +#include struct ctl_table_header; @@ -42,6 +43,11 @@ struct netns_xfrm { unsigned int policy_count[XFRM_POLICY_MAX * 2]; struct work_struct policy_hash_work; + struct dst_ops xfrm4_dst_ops; +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) + struct dst_ops xfrm6_dst_ops; +#endif + struct sock *nlsk; struct sock *nlsk_stash; -- cgit v1.2.2 From cb289d6244a37cf932c571d6deb0daa8030f931b Mon Sep 17 00:00:00 2001 From: Davide Libenzi Date: Wed, 13 Jan 2010 09:34:36 -0800 Subject: eventfd - allow atomic read and waitqueue remove KVM needs a wait to atomically remove themselves from the eventfd ->poll() wait queue head, in order to handle correctly their IRQfd deassign operation. This patch introduces such API, plus a way to read an eventfd from its context. Signed-off-by: Davide Libenzi Signed-off-by: Avi Kivity --- include/linux/eventfd.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include') diff --git a/include/linux/eventfd.h b/include/linux/eventfd.h index 94dd10366a78..91bb4f27238c 100644 --- a/include/linux/eventfd.h +++ b/include/linux/eventfd.h @@ -10,6 +10,7 @@ #include #include +#include /* * CAREFUL: Check include/asm-generic/fcntl.h when defining @@ -34,6 +35,9 @@ struct file *eventfd_fget(int fd); struct eventfd_ctx *eventfd_ctx_fdget(int fd); struct eventfd_ctx *eventfd_ctx_fileget(struct file *file); int eventfd_signal(struct eventfd_ctx *ctx, int n); +ssize_t eventfd_ctx_read(struct eventfd_ctx *ctx, int no_wait, __u64 *cnt); +int eventfd_ctx_remove_wait_queue(struct eventfd_ctx *ctx, wait_queue_t *wait, + __u64 *cnt); #else /* CONFIG_EVENTFD */ @@ -61,6 +65,18 @@ static inline void eventfd_ctx_put(struct eventfd_ctx *ctx) } +static inline ssize_t eventfd_ctx_read(struct eventfd_ctx *ctx, int no_wait, + __u64 *cnt) +{ + return -ENOSYS; +} + +static inline int eventfd_ctx_remove_wait_queue(struct eventfd_ctx *ctx, + wait_queue_t *wait, __u64 *cnt) +{ + return -ENOSYS; +} + #endif #endif /* _LINUX_EVENTFD_H */ -- cgit v1.2.2 From 6d3faf6f431bafb25f4b9926c50a7e5c267738c6 Mon Sep 17 00:00:00 2001 From: Stefan Richter Date: Sun, 24 Jan 2010 14:48:00 +0100 Subject: firewire: cdev: add_descriptor documentation fix struct fw_cdev_add_descriptor.length is in quadlets, not in bytes. Also remove any doubts about the endianess of descriptor data. Signed-off-by: Stefan Richter --- include/linux/firewire-cdev.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/firewire-cdev.h b/include/linux/firewire-cdev.h index 1f716d9f714b..520ecf86cbb3 100644 --- a/include/linux/firewire-cdev.h +++ b/include/linux/firewire-cdev.h @@ -380,7 +380,7 @@ struct fw_cdev_initiate_bus_reset { * @immediate: If non-zero, immediate key to insert before pointer * @key: Upper 8 bits of root directory pointer * @data: Userspace pointer to contents of descriptor block - * @length: Length of descriptor block data, in bytes + * @length: Length of descriptor block data, in quadlets * @handle: Handle to the descriptor, written by the kernel * * Add a descriptor block and optionally a preceding immediate key to the local @@ -394,6 +394,8 @@ struct fw_cdev_initiate_bus_reset { * If not 0, the @immediate field specifies an immediate key which will be * inserted before the root directory pointer. * + * @immediate, @key, and @data array elements are CPU-endian quadlets. + * * If successful, the kernel adds the descriptor and writes back a handle to the * kernel-side object to be used for later removal of the descriptor block and * immediate key. -- cgit v1.2.2 From 0531b2aac59c2296570ac52bfc032ef2ace7d5e1 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 27 Jan 2010 09:20:03 -0800 Subject: mm: add new 'read_cache_page_gfp()' helper function It's a simplified 'read_cache_page()' which takes a page allocation flag, so that different paths can control how aggressive the memory allocations are that populate a address space. In particular, the intel GPU object mapping code wants to be able to do a certain amount of own internal memory management by automatically shrinking the address space when memory starts getting tight. This allows it to dynamically use different memory allocation policies on a per-allocation basis, rather than depend on the (static) address space gfp policy. The actual new function is a one-liner, but re-organizing the helper functions to the point where you can do this with a single line of code is what most of the patch is all about. Tested-by: Chris Wilson Signed-off-by: Linus Torvalds --- include/linux/pagemap.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index ed5d7501e181..3c62ed408492 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -253,6 +253,8 @@ extern struct page * read_cache_page_async(struct address_space *mapping, extern struct page * read_cache_page(struct address_space *mapping, pgoff_t index, filler_t *filler, void *data); +extern struct page * read_cache_page_gfp(struct address_space *mapping, + pgoff_t index, gfp_t gfp_mask); extern int read_cache_pages(struct address_space *mapping, struct list_head *pages, filler_t *filler, void *data); -- cgit v1.2.2 From bb209c8287d2d55ec4a67e3933346e0a3ee0da76 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Tue, 26 Jan 2010 17:10:03 +0000 Subject: powerpc/pci: Add calls to set_pcie_port_type() and set_pcie_hotplug_bridge() We are missing these when building the pci_dev from scratch off the Open Firmware device-tree Signed-off-by: Benjamin Herrenschmidt Acked-by: Jesse Barnes --- include/linux/pci.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include') diff --git a/include/linux/pci.h b/include/linux/pci.h index 174e5392e51e..c1968f464c38 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -756,6 +756,10 @@ pci_power_t pci_target_state(struct pci_dev *dev); int pci_prepare_to_sleep(struct pci_dev *dev); int pci_back_from_sleep(struct pci_dev *dev); +/* For use by arch with custom probe code */ +void set_pcie_port_type(struct pci_dev *pdev); +void set_pcie_hotplug_bridge(struct pci_dev *pdev); + /* Functions for PCI Hotplug drivers to use */ int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap); #ifdef CONFIG_HOTPLUG -- cgit v1.2.2 From cb6ecf6f7afece066265e243657b0ac28150a7b2 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Thu, 28 Jan 2010 22:28:27 -0800 Subject: Input: add the ABS_MT_PRESSURE event For pressure-based multi-touch devices, a direct way to send sensor intensity data per finger is needed. This patch adds the ABS_MT_PRESSURE event to the MT protocol. Requested-by: Yoonyoung Shim Requested-by: Mika Kuoppala Requested-by: Peter Hutterer Signed-off-by: Henrik Rydberg Signed-off-by: Dmitry Torokhov --- include/linux/input.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/input.h b/include/linux/input.h index 7be8a6537b57..735ceaf1bc2d 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -660,6 +660,7 @@ struct input_absinfo { #define ABS_MT_TOOL_TYPE 0x37 /* Type of touching device */ #define ABS_MT_BLOB_ID 0x38 /* Group a set of packets as a blob */ #define ABS_MT_TRACKING_ID 0x39 /* Unique ID of initiated contact */ +#define ABS_MT_PRESSURE 0x3a /* Pressure on contact area */ #define ABS_MAX 0x3f #define ABS_CNT (ABS_MAX+1) -- cgit v1.2.2 From 221af7f87b97431e3ee21ce4b0e77d5411cf1549 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 28 Jan 2010 22:14:42 -0800 Subject: Split 'flush_old_exec' into two functions 'flush_old_exec()' is the point of no return when doing an execve(), and it is pretty badly misnamed. It doesn't just flush the old executable environment, it also starts up the new one. Which is very inconvenient for things like setting up the new personality, because we want the new personality to affect the starting of the new environment, but at the same time we do _not_ want the new personality to take effect if flushing the old one fails. As a result, the x86-64 '32-bit' personality is actually done using this insane "I'm going to change the ABI, but I haven't done it yet" bit (TIF_ABI_PENDING), with SET_PERSONALITY() not actually setting the personality, but just the "pending" bit, so that "flush_thread()" can do the actual personality magic. This patch in no way changes any of that insanity, but it does split the 'flush_old_exec()' function up into a preparatory part that can fail (still called flush_old_exec()), and a new part that will actually set up the new exec environment (setup_new_exec()). All callers are changed to trivially comply with the new world order. Signed-off-by: H. Peter Anvin Cc: stable@kernel.org Signed-off-by: Linus Torvalds --- include/linux/binfmts.h | 1 + include/linux/sched.h | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h index cd4349bdc34e..89c6249fc561 100644 --- a/include/linux/binfmts.h +++ b/include/linux/binfmts.h @@ -109,6 +109,7 @@ extern int prepare_binprm(struct linux_binprm *); extern int __must_check remove_arg_zero(struct linux_binprm *); extern int search_binary_handler(struct linux_binprm *,struct pt_regs *); extern int flush_old_exec(struct linux_binprm * bprm); +extern void setup_new_exec(struct linux_binprm * bprm); extern int suid_dumpable; #define SUID_DUMP_DISABLE 0 /* No setuid dumping */ diff --git a/include/linux/sched.h b/include/linux/sched.h index 6f7bba93929b..abdfacc58653 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1369,7 +1369,7 @@ struct task_struct { char comm[TASK_COMM_LEN]; /* executable name excluding path - access with [gs]et_task_comm (which lock it with task_lock()) - - initialized normally by flush_old_exec */ + - initialized normally by setup_new_exec */ /* file system info */ int link_count, total_link_count; #ifdef CONFIG_SYSVIPC -- cgit v1.2.2 From 5352ae638e2d7d5c9b2e4d528676bbf2af6fd6f3 Mon Sep 17 00:00:00 2001 From: Jason Wessel Date: Thu, 28 Jan 2010 17:04:43 -0600 Subject: perf, hw_breakpoint, kgdb: Do not take mutex for kernel debugger This patch fixes the regression in functionality where the kernel debugger and the perf API do not nicely share hw breakpoint reservations. The kernel debugger cannot use any mutex_lock() calls because it can start the kernel running from an invalid context. A mutex free version of the reservation API needed to get created for the kernel debugger to safely update hw breakpoint reservations. The possibility for a breakpoint reservation to be concurrently processed at the time that kgdb interrupts the system is improbable. Should this corner case occur the end user is warned, and the kernel debugger will prohibit updating the hardware breakpoint reservations. Any time the kernel debugger reserves a hardware breakpoint it will be a system wide reservation. Signed-off-by: Jason Wessel Acked-by: Frederic Weisbecker Cc: kgdb-bugreport@lists.sourceforge.net Cc: K.Prasad Cc: Peter Zijlstra Cc: Alan Stern Cc: torvalds@linux-foundation.org LKML-Reference: <1264719883-7285-3-git-send-email-jason.wessel@windriver.com> Signed-off-by: Ingo Molnar --- include/linux/hw_breakpoint.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/hw_breakpoint.h b/include/linux/hw_breakpoint.h index 41235c93e4e9..070ba0621738 100644 --- a/include/linux/hw_breakpoint.h +++ b/include/linux/hw_breakpoint.h @@ -75,6 +75,8 @@ extern int __register_perf_hw_breakpoint(struct perf_event *bp); extern void unregister_hw_breakpoint(struct perf_event *bp); extern void unregister_wide_hw_breakpoint(struct perf_event **cpu_events); +extern int dbg_reserve_bp_slot(struct perf_event *bp); +extern int dbg_release_bp_slot(struct perf_event *bp); extern int reserve_bp_slot(struct perf_event *bp); extern void release_bp_slot(struct perf_event *bp); -- cgit v1.2.2 From fa5829b36539067f3c675f5d437531dedcfc4ad8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Marcin=20Ko=C5=9Bcielnicki?= Date: Sat, 23 Jan 2010 10:25:28 +1000 Subject: drm/kms: Remove incorrect comment in struct drm_mode_modeinfo Signed-off-by: Dave Airlie --- include/drm/drm_mode.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/drm/drm_mode.h b/include/drm/drm_mode.h index bc4fdf27bd2e..c5ba1636613c 100644 --- a/include/drm/drm_mode.h +++ b/include/drm/drm_mode.h @@ -85,7 +85,7 @@ struct drm_mode_modeinfo { __u16 hdisplay, hsync_start, hsync_end, htotal, hskew; __u16 vdisplay, vsync_start, vsync_end, vtotal, vscan; - __u32 vrefresh; /* vertical refresh * 1000 */ + __u32 vrefresh; __u32 flags; __u32 type; -- cgit v1.2.2 From d6ad3e286d2c075a60b9f11075a2c55aeeeca2ad Mon Sep 17 00:00:00 2001 From: Jason Wessel Date: Wed, 27 Jan 2010 16:25:22 -0600 Subject: softlockup: Add sched_clock_tick() to avoid kernel warning on kgdb resume When CONFIG_HAVE_UNSTABLE_SCHED_CLOCK is set, sched_clock() gets the time from hardware such as the TSC on x86. In this configuration kgdb will report a softlock warning message on resuming or detaching from a debug session. Sequence of events in the problem case: 1) "cpu sched clock" and "hardware time" are at 100 sec prior to a call to kgdb_handle_exception() 2) Debugger waits in kgdb_handle_exception() for 80 sec and on exit the following is called ... touch_softlockup_watchdog() --> __raw_get_cpu_var(touch_timestamp) = 0; 3) "cpu sched clock" = 100s (it was not updated, because the interrupt was disabled in kgdb) but the "hardware time" = 180 sec 4) The first timer interrupt after resuming from kgdb_handle_exception updates the watchdog from the "cpu sched clock" update_process_times() { ... run_local_timers() --> softlockup_tick() --> check (touch_timestamp == 0) (it is "YES" here, we have set "touch_timestamp = 0" at kgdb) --> __touch_softlockup_watchdog() ***(A)--> reset "touch_timestamp" to "get_timestamp()" (Here, the "touch_timestamp" will still be set to 100s.) ... scheduler_tick() ***(B)--> sched_clock_tick() (update "cpu sched clock" to "hardware time" = 180s) ... } 5) The Second timer interrupt handler appears to have a large jump and trips the softlockup warning. update_process_times() { ... run_local_timers() --> softlockup_tick() --> "cpu sched clock" - "touch_timestamp" = 180s-100s > 60s --> printk "soft lockup error messages" ... } note: ***(A) reset "touch_timestamp" to "get_timestamp(this_cpu)" Why is "touch_timestamp" 100 sec, instead of 180 sec? When CONFIG_HAVE_UNSTABLE_SCHED_CLOCK is set, the call trace of get_timestamp() is: get_timestamp(this_cpu) -->cpu_clock(this_cpu) -->sched_clock_cpu(this_cpu) -->__update_sched_clock(sched_clock_data, now) The __update_sched_clock() function uses the GTOD tick value to create a window to normalize the "now" values. So if "now" value is too big for sched_clock_data, it will be ignored. The fix is to invoke sched_clock_tick() to update "cpu sched clock" in order to recover from this state. This is done by introducing the function touch_softlockup_watchdog_sync(). This allows kgdb to request that the sched clock is updated when the watchdog thread runs the first time after a resume from kgdb. [yong.zhang0@gmail.com: Use per cpu instead of an array] Signed-off-by: Jason Wessel Signed-off-by: Dongdong Deng Cc: kgdb-bugreport@lists.sourceforge.net Cc: peterz@infradead.org LKML-Reference: <1264631124-4837-2-git-send-email-jason.wessel@windriver.com> Signed-off-by: Ingo Molnar --- include/linux/sched.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include') diff --git a/include/linux/sched.h b/include/linux/sched.h index 6f7bba93929b..89232151a9d0 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -310,6 +310,7 @@ extern void sched_show_task(struct task_struct *p); #ifdef CONFIG_DETECT_SOFTLOCKUP extern void softlockup_tick(void); extern void touch_softlockup_watchdog(void); +extern void touch_softlockup_watchdog_sync(void); extern void touch_all_softlockup_watchdogs(void); extern int proc_dosoftlockup_thresh(struct ctl_table *table, int write, void __user *buffer, @@ -323,6 +324,9 @@ static inline void softlockup_tick(void) static inline void touch_softlockup_watchdog(void) { } +static inline void touch_softlockup_watchdog_sync(void) +{ +} static inline void touch_all_softlockup_watchdogs(void) { } -- cgit v1.2.2 From f98bfbd78c37c5946cc53089da32a5f741efdeb7 Mon Sep 17 00:00:00 2001 From: Evgeniy Polyakov Date: Tue, 2 Feb 2010 15:58:48 -0800 Subject: connector: Delete buggy notification code. On Tue, Feb 02, 2010 at 02:57:14PM -0800, Greg KH (gregkh@suse.de) wrote: > > There are at least two ways to fix it: using a big cannon and a small > > one. The former way is to disable notification registration, since it is > > not used by anyone at all. Second way is to check whether calling > > process is root and its destination group is -1 (kind of priveledged > > one) before command is dispatched to workqueue. > > Well if no one is using it, removing it makes the most sense, right? > > No objection from me, care to make up a patch either way for this? Getting it is not used, let's drop support for notifications about (un)registered events from connector. Another option was to check credentials on receiving, but we can always restore it without bugs if needed, but genetlink has a wider code base and none complained, that userspace can not get notification when some other clients were (un)registered. Kudos for Sebastian Krahmer , who found a bug in the code. Signed-off-by: Evgeniy Polyakov Acked-by: Greg Kroah-Hartman Signed-off-by: David S. Miller --- include/linux/connector.h | 32 -------------------------------- 1 file changed, 32 deletions(-) (limited to 'include') diff --git a/include/linux/connector.h b/include/linux/connector.h index 72ba63eb83c5..3a779ffba60b 100644 --- a/include/linux/connector.h +++ b/include/linux/connector.h @@ -24,9 +24,6 @@ #include -#define CN_IDX_CONNECTOR 0xffffffff -#define CN_VAL_CONNECTOR 0xffffffff - /* * Process Events connector unique ids -- used for message routing */ @@ -75,30 +72,6 @@ struct cn_msg { __u8 data[0]; }; -/* - * Notify structure - requests notification about - * registering/unregistering idx/val in range [first, first+range]. - */ -struct cn_notify_req { - __u32 first; - __u32 range; -}; - -/* - * Main notification control message - * *_notify_num - number of appropriate cn_notify_req structures after - * this struct. - * group - notification receiver's idx. - * len - total length of the attached data. - */ -struct cn_ctl_msg { - __u32 idx_notify_num; - __u32 val_notify_num; - __u32 group; - __u32 len; - __u8 data[0]; -}; - #ifdef __KERNEL__ #include @@ -151,11 +124,6 @@ struct cn_callback_entry { u32 seq, group; }; -struct cn_ctl_entry { - struct list_head notify_entry; - struct cn_ctl_msg *msg; -}; - struct cn_dev { struct cb_id id; -- cgit v1.2.2 From cd757645fbdc34a8343c04bb0e74e06fccc2cb10 Mon Sep 17 00:00:00 2001 From: Mahesh Salgaonkar Date: Sat, 30 Jan 2010 10:25:18 +0530 Subject: perf: Make bp_len type to u64 generic across the arch Change 'bp_len' type to __u64 to make it work across archs as the s390 architecture watch point length can be upto 2^64. reference: http://lkml.org/lkml/2010/1/25/212 This is an ABI change that is not backward compatible with the previous hardware breakpoint info layout integrated in this development cycle, a rebuilt of perf tools is necessary for versions based on 2.6.33-rc1 - 2.6.33-rc6 to work with a kernel based on this patch. Signed-off-by: Mahesh Salgaonkar Acked-by: Peter Zijlstra Cc: Ananth N Mavinakayanahalli Cc: "K. Prasad" Cc: Maneesh Soni Cc: Heiko Carstens Cc: Martin LKML-Reference: <20100130045518.GA20776@in.ibm.com> Signed-off-by: Frederic Weisbecker --- include/linux/hw_breakpoint.h | 2 +- include/linux/perf_event.h | 6 ++---- 2 files changed, 3 insertions(+), 5 deletions(-) (limited to 'include') diff --git a/include/linux/hw_breakpoint.h b/include/linux/hw_breakpoint.h index 070ba0621738..5977b724f7c6 100644 --- a/include/linux/hw_breakpoint.h +++ b/include/linux/hw_breakpoint.h @@ -44,7 +44,7 @@ static inline int hw_breakpoint_type(struct perf_event *bp) return bp->attr.bp_type; } -static inline int hw_breakpoint_len(struct perf_event *bp) +static inline unsigned long hw_breakpoint_len(struct perf_event *bp) { return bp->attr.bp_len; } diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 8fa71874113f..a177698d95e2 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -211,11 +211,9 @@ struct perf_event_attr { __u32 wakeup_watermark; /* bytes before wakeup */ }; - __u32 __reserved_2; - - __u64 bp_addr; __u32 bp_type; - __u32 bp_len; + __u64 bp_addr; + __u64 bp_len; }; /* -- cgit v1.2.2 From f7acede65d6b65919aee5b6a360a17cedb11f2f7 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 28 Jan 2010 13:30:11 +0100 Subject: libata: fix ata_id_logical_per_physical_sectors The value we get from the low byte of the ATA_ID_SECTOR_SIZE word is not not a plain multiple, but the log of it, so fix the helper to give the correct answer. Without this we'll get an incorrect minimal I/O size in the block limits VPD page for 4k sector drives. Also change the return value of ata_id_logical_per_physical_sectors to u16 for the unlikely case of very large logical sectors. Signed-off-by: Christoph Hellwig Signed-off-by: Jeff Garzik --- include/linux/ata.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/ata.h b/include/linux/ata.h index 38a6948ce0c2..20f31567ccee 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -647,9 +647,9 @@ static inline int ata_id_has_large_logical_sectors(const u16 *id) return id[ATA_ID_SECTOR_SIZE] & (1 << 13); } -static inline u8 ata_id_logical_per_physical_sectors(const u16 *id) +static inline u16 ata_id_logical_per_physical_sectors(const u16 *id) { - return id[ATA_ID_SECTOR_SIZE] & 0xf; + return 1 << (id[ATA_ID_SECTOR_SIZE] & 0xf); } static inline int ata_id_has_lba48(const u16 *id) -- cgit v1.2.2 From 2938429501b73f6aeb312236eac7ed0416a07cd5 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Fri, 5 Feb 2010 16:09:11 +1100 Subject: percpu: add __percpu for sparse This is to make the annotation of percpu variables during the next merge window less painfull. Extracted from a patch by Rusty Russell. Signed-off-by: Stephen Rothwell Acked-by: Tejun Heo Signed-off-by: Linus Torvalds --- include/linux/compiler.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 5be3dab4a695..188fcae10a99 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -15,6 +15,7 @@ # define __acquire(x) __context__(x,1) # define __release(x) __context__(x,-1) # define __cond_lock(x,c) ((c) ? ({ __acquire(x); 1; }) : 0) +# define __percpu __attribute__((noderef, address_space(3))) extern void __chk_user_ptr(const volatile void __user *); extern void __chk_io_ptr(const volatile void __iomem *); #else @@ -32,6 +33,7 @@ extern void __chk_io_ptr(const volatile void __iomem *); # define __acquire(x) (void)0 # define __release(x) (void)0 # define __cond_lock(x,c) (c) +# define __percpu #endif #ifdef __KERNEL__ -- cgit v1.2.2 From 8eb988c70e7709b7bd1a69f0ec53d19ac20dea84 Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Wed, 20 Jan 2010 15:35:41 -0500 Subject: fix ima breakage The "Untangling ima mess, part 2 with counters" patch messed up the counters. Based on conversations with Al Viro, this patch streamlines ima_path_check() by removing the counter maintaince. The counters are now updated independently, from measuring the file, in __dentry_open() and alloc_file() by calling ima_counts_get(). ima_path_check() is called from nfsd and do_filp_open(). It also did not measure all files that should have been measured. Reason: ima_path_check() got bogus value passed as mask. [AV: mea culpa] [AV: add missing nfsd bits] Signed-off-by: Mimi Zohar Signed-off-by: Al Viro --- include/linux/ima.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/ima.h b/include/linux/ima.h index 99dc6d5cf7e5..aa55a8f1f5b9 100644 --- a/include/linux/ima.h +++ b/include/linux/ima.h @@ -17,7 +17,7 @@ struct linux_binprm; extern int ima_bprm_check(struct linux_binprm *bprm); extern int ima_inode_alloc(struct inode *inode); extern void ima_inode_free(struct inode *inode); -extern int ima_path_check(struct path *path, int mask); +extern int ima_path_check(struct file *file, int mask); extern void ima_file_free(struct file *file); extern int ima_file_mmap(struct file *file, unsigned long prot); extern void ima_counts_get(struct file *file); @@ -38,7 +38,7 @@ static inline void ima_inode_free(struct inode *inode) return; } -static inline int ima_path_check(struct path *path, int mask) +static inline int ima_path_check(struct file *file, int mask) { return 0; } -- cgit v1.2.2 From 9bbb6cad0173e6220f3ac609e26beb48dab3b7cd Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Tue, 26 Jan 2010 17:02:40 -0500 Subject: ima: rename ima_path_check to ima_file_check ima_path_check actually deals with files! call it ima_file_check instead. Signed-off-by: Eric Paris Acked-by: Mimi Zohar Signed-off-by: Al Viro --- include/linux/ima.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/ima.h b/include/linux/ima.h index aa55a8f1f5b9..975837e7d6c0 100644 --- a/include/linux/ima.h +++ b/include/linux/ima.h @@ -17,7 +17,7 @@ struct linux_binprm; extern int ima_bprm_check(struct linux_binprm *bprm); extern int ima_inode_alloc(struct inode *inode); extern void ima_inode_free(struct inode *inode); -extern int ima_path_check(struct file *file, int mask); +extern int ima_file_check(struct file *file, int mask); extern void ima_file_free(struct file *file); extern int ima_file_mmap(struct file *file, unsigned long prot); extern void ima_counts_get(struct file *file); @@ -38,7 +38,7 @@ static inline void ima_inode_free(struct inode *inode) return; } -static inline int ima_path_check(struct file *file, int mask) +static inline int ima_file_check(struct file *file, int mask) { return 0; } -- cgit v1.2.2 From 5b3501faa8741d50617ce4191c20061c6ef36cb3 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 8 Feb 2010 11:16:56 -0800 Subject: netfilter: nf_conntrack: per netns nf_conntrack_cachep nf_conntrack_cachep is currently shared by all netns instances, but because of SLAB_DESTROY_BY_RCU special semantics, this is wrong. If we use a shared slab cache, one object can instantly flight between one hash table (netns ONE) to another one (netns TWO), and concurrent reader (doing a lookup in netns ONE, 'finding' an object of netns TWO) can be fooled without notice, because no RCU grace period has to be observed between object freeing and its reuse. We dont have this problem with UDP/TCP slab caches because TCP/UDP hashtables are global to the machine (and each object has a pointer to its netns). If we use per netns conntrack hash tables, we also *must* use per netns conntrack slab caches, to guarantee an object can not escape from one namespace to another one. Signed-off-by: Eric Dumazet [Patrick: added unique slab name allocation] Cc: stable@kernel.org Signed-off-by: Patrick McHardy --- include/net/netns/conntrack.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/net/netns/conntrack.h b/include/net/netns/conntrack.h index ba1ba0c5efd1..aed23b6c8478 100644 --- a/include/net/netns/conntrack.h +++ b/include/net/netns/conntrack.h @@ -11,6 +11,7 @@ struct nf_conntrack_ecache; struct netns_ct { atomic_t count; unsigned int expect_count; + struct kmem_cache *nf_conntrack_cachep; struct hlist_nulls_head *hash; struct hlist_head *expect_hash; struct hlist_nulls_head unconfirmed; @@ -28,5 +29,6 @@ struct netns_ct { #endif int hash_vmalloc; int expect_vmalloc; + char *slabname; }; #endif -- cgit v1.2.2 From d696c7bdaa55e2208e56c6f98e6bc1599f34286d Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Mon, 8 Feb 2010 11:18:07 -0800 Subject: netfilter: nf_conntrack: fix hash resizing with namespaces As noticed by Jon Masters , the conntrack hash size is global and not per namespace, but modifiable at runtime through /sys/module/nf_conntrack/hashsize. Changing the hash size will only resize the hash in the current namespace however, so other namespaces will use an invalid hash size. This can cause crashes when enlarging the hashsize, or false negative lookups when shrinking it. Move the hash size into the per-namespace data and only use the global hash size to initialize the per-namespace value when instanciating a new namespace. Additionally restrict hash resizing to init_net for now as other namespaces are not handled currently. Cc: stable@kernel.org Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- include/net/netns/conntrack.h | 1 + include/net/netns/ipv4.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include') diff --git a/include/net/netns/conntrack.h b/include/net/netns/conntrack.h index aed23b6c8478..63d449807d9b 100644 --- a/include/net/netns/conntrack.h +++ b/include/net/netns/conntrack.h @@ -11,6 +11,7 @@ struct nf_conntrack_ecache; struct netns_ct { atomic_t count; unsigned int expect_count; + unsigned int htable_size; struct kmem_cache *nf_conntrack_cachep; struct hlist_nulls_head *hash; struct hlist_head *expect_hash; diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h index 2eb3814d6258..9a4b8b714079 100644 --- a/include/net/netns/ipv4.h +++ b/include/net/netns/ipv4.h @@ -40,6 +40,7 @@ struct netns_ipv4 { struct xt_table *iptable_security; struct xt_table *nat_table; struct hlist_head *nat_bysource; + unsigned int nat_htable_size; int nat_vmalloced; #endif -- cgit v1.2.2 From 69c9700b544e496dc3ccf472a4f3a76dcf4abaf7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Marcin=20Ko=C5=9Bcielnicki?= Date: Tue, 26 Jan 2010 18:39:20 +0000 Subject: drm/nouveau: Add getparam to get available PGRAPH units. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On nv50, this will be needed by applications using CUDA to know how much stack/local memory to allocate. Signed-off-by: Marcin Kościelnicki Signed-off-by: Ben Skeggs --- include/drm/nouveau_drm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/drm/nouveau_drm.h b/include/drm/nouveau_drm.h index 1e67c441ea82..f745948b61e4 100644 --- a/include/drm/nouveau_drm.h +++ b/include/drm/nouveau_drm.h @@ -77,6 +77,7 @@ struct drm_nouveau_gpuobj_free { #define NOUVEAU_GETPARAM_PCI_PHYSICAL 10 #define NOUVEAU_GETPARAM_CHIPSET_ID 11 #define NOUVEAU_GETPARAM_VM_VRAM_BASE 12 +#define NOUVEAU_GETPARAM_GRAPH_UNITS 13 struct drm_nouveau_getparam { uint64_t param; uint64_t value; -- cgit v1.2.2 From f77cef3db357aeea22d82a2aa4f0ef8fbae41d47 Mon Sep 17 00:00:00 2001 From: Thomas Hellstrom Date: Tue, 9 Feb 2010 19:41:55 +0000 Subject: drm/vmwgfx: Update the user-space interface. When time-based throttling is implemented, we need to bump minor. When the old way of detecting scanout is removed, we need to bump major. In the meantime, this change should not break existing user-space. Signed-off-by: Thomas Hellstrom Signed-off-by: Jakob Bornecrantz Signed-off-by: Dave Airlie --- include/drm/vmwgfx_drm.h | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/drm/vmwgfx_drm.h b/include/drm/vmwgfx_drm.h index 2be7e1249b6f..dfaf3c2d2c8e 100644 --- a/include/drm/vmwgfx_drm.h +++ b/include/drm/vmwgfx_drm.h @@ -68,7 +68,8 @@ #define DRM_VMW_PARAM_NUM_FREE_STREAMS 1 #define DRM_VMW_PARAM_3D 2 #define DRM_VMW_PARAM_FIFO_OFFSET 3 - +#define DRM_VMW_PARAM_HW_CAPS 4 +#define DRM_VMW_PARAM_FIFO_CAPS 5 /** * struct drm_vmw_getparam_arg @@ -181,6 +182,8 @@ struct drm_vmw_context_arg { * The size of the array should equal the total number of mipmap levels. * @shareable: Boolean whether other clients (as identified by file descriptors) * may reference this surface. + * @scanout: Boolean whether the surface is intended to be used as a + * scanout. * * Input data to the DRM_VMW_CREATE_SURFACE Ioctl. * Output data from the DRM_VMW_REF_SURFACE Ioctl. @@ -192,7 +195,7 @@ struct drm_vmw_surface_create_req { uint32_t mip_levels[DRM_VMW_MAX_SURFACE_FACES]; uint64_t size_addr; int32_t shareable; - uint32_t pad64; + int32_t scanout; }; /** @@ -295,6 +298,9 @@ union drm_vmw_surface_reference_arg { * * @commands: User-space address of a command buffer cast to an uint64_t. * @command-size: Size in bytes of the command buffer. + * @throttle-us: Sleep until software is less than @throttle_us + * microseconds ahead of hardware. The driver may round this value + * to the nearest kernel tick. * @fence_rep: User-space address of a struct drm_vmw_fence_rep cast to an * uint64_t. * @@ -304,7 +310,7 @@ union drm_vmw_surface_reference_arg { struct drm_vmw_execbuf_arg { uint64_t commands; uint32_t command_size; - uint32_t pad64; + uint32_t throttle_us; uint64_t fence_rep; }; -- cgit v1.2.2 From a87897edbae2d60db7bcb6bb0a75e82013d68305 Mon Sep 17 00:00:00 2001 From: Jakob Bornecrantz Date: Tue, 9 Feb 2010 21:29:47 +0000 Subject: drm/vmwgfx: Drop scanout flag compat and add execbuf ioctl parameter members. Bumps major. Even if this bumps the version to 1 it does not mean the driver is out of staging. From what we know this is the last backwards incompatible change to the driver. Signed-off-by: Jakob Bornecrantz Signed-off-by: Thomas Hellstrom Signed-off-by: Dave Airlie --- include/drm/vmwgfx_drm.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include') diff --git a/include/drm/vmwgfx_drm.h b/include/drm/vmwgfx_drm.h index dfaf3c2d2c8e..c7645f480d12 100644 --- a/include/drm/vmwgfx_drm.h +++ b/include/drm/vmwgfx_drm.h @@ -303,15 +303,23 @@ union drm_vmw_surface_reference_arg { * to the nearest kernel tick. * @fence_rep: User-space address of a struct drm_vmw_fence_rep cast to an * uint64_t. + * @version: Allows expanding the execbuf ioctl parameters without breaking + * backwards compatibility, since user-space will always tell the kernel + * which version it uses. + * @flags: Execbuf flags. None currently. * * Argument to the DRM_VMW_EXECBUF Ioctl. */ +#define DRM_VMW_EXECBUF_VERSION 0 + struct drm_vmw_execbuf_arg { uint64_t commands; uint32_t command_size; uint32_t throttle_us; uint64_t fence_rep; + uint32_t version; + uint32_t flags; }; /** -- cgit v1.2.2 From 5a5e0f4c7038168e38d1db6af09d1ac715ee9888 Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Wed, 27 Jan 2010 17:09:38 +0300 Subject: kfifo: Don't use integer as NULL pointer This patch fixes following sparse warnings: include/linux/kfifo.h:127:25: warning: Using plain integer as NULL pointer kernel/kfifo.c:83:21: warning: Using plain integer as NULL pointer Signed-off-by: Anton Vorontsov Acked-by: Stefani Seibold Signed-off-by: Greg Kroah-Hartman --- include/linux/kfifo.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h index 6f6c5f300af6..bc0fc795bd35 100644 --- a/include/linux/kfifo.h +++ b/include/linux/kfifo.h @@ -124,7 +124,7 @@ extern __must_check unsigned int kfifo_out_peek(struct kfifo *fifo, */ static inline bool kfifo_initialized(struct kfifo *fifo) { - return fifo->buffer != 0; + return fifo->buffer != NULL; } /** -- cgit v1.2.2 From 3b77fd8ee6a8ae34e349651e9d5f5000d1cc206e Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Wed, 17 Feb 2010 12:21:45 -0800 Subject: Input: add KEY_RFKILL Most laptops have keys that are intended to toggle all device state, not just wifi. These are currently generally mapped to KEY_WLAN. As a result, rfkill will only kill or enable wifi in response to the key press. This confuses users and can make it difficult for them to enable bluetooth and wwan devices. This patch adds a new keycode, KEY_RFKILL. It indicates that the system should toggle the state of all rfkillable devices. Signed-off-by: Matthew Garrett Acked-by: Marcel Holtmann Signed-off-by: Dmitry Torokhov --- include/linux/input.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/input.h b/include/linux/input.h index 735ceaf1bc2d..663208afb64c 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -376,6 +376,7 @@ struct input_absinfo { #define KEY_DISPLAY_OFF 245 /* display device to off state */ #define KEY_WIMAX 246 +#define KEY_RFKILL 247 /* Key that controls all radios */ /* Range 248 - 255 is reserved for special needs of AT keyboard driver */ -- cgit v1.2.2 From 4e70af56319e56423d6eb1ce25fc321cdf8cd41d Mon Sep 17 00:00:00 2001 From: Richard Kennedy Date: Mon, 15 Feb 2010 11:16:11 +0000 Subject: fs: inode - remove 8 bytes of padding on 64bits allowing 1 more objects/slab under slub This removes 8 bytes of padding from struct inode on 64bit builds, and so allows 1 more object/slab in the inode_cache when using slub. Signed-off-by: Richard Kennedy ---- patch against 2.6.33-rc8 compiled & tested on x86_64 AMDX2 I've been running this patch for over a week with no obvious problems regards Richard Signed-off-by: Al Viro --- include/linux/fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/fs.h b/include/linux/fs.h index b1bcb275b596..ebb1cd5bc241 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -729,6 +729,7 @@ struct inode { uid_t i_uid; gid_t i_gid; dev_t i_rdev; + unsigned int i_blkbits; u64 i_version; loff_t i_size; #ifdef __NEED_I_SIZE_ORDERED @@ -738,7 +739,6 @@ struct inode { struct timespec i_mtime; struct timespec i_ctime; blkcnt_t i_blocks; - unsigned int i_blkbits; unsigned short i_bytes; umode_t i_mode; spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ -- cgit v1.2.2 From 4e10ae11317b238609fc3ec9d50a5dee9473e045 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Sat, 20 Feb 2010 09:41:30 +0100 Subject: ARM: 5951/1: ARM: fix documentation of the PrimeCell bus This fixes the filepath encoded in and adds some documentation as to what this bus really means. Signed-off-by: Linus Walleij Signed-off-by: Russell King --- include/linux/amba/bus.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h index ab94335b4bb9..6816be6c3f77 100644 --- a/include/linux/amba/bus.h +++ b/include/linux/amba/bus.h @@ -1,5 +1,9 @@ /* - * linux/include/asm-arm/hardware/amba.h + * linux/include/amba/bus.h + * + * This device type deals with ARM PrimeCells and anything else that + * presents a proper CID (0xB105F00D) at the end of the I/O register + * region or that is derived from a PrimeCell. * * Copyright (C) 2003 Deep Blue Solutions Ltd, All Rights Reserved. * -- cgit v1.2.2 From 79da0644a8e0838522828f106e4049639eea6baf Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Tue, 23 Feb 2010 08:40:43 +0100 Subject: Revert "block: improve queue_should_plug() by looking at IO depths" This reverts commit fb1e75389bd06fd5987e9cda1b4e0305c782f854. "Benjamin S." reports that the patch in question causes a big drop in sequential throughput for him, dropping from 200MB/sec down to only 70MB/sec. Needs to be investigated more fully, for now lets just revert the offending commit. Conflicts: include/linux/blkdev.h Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'include') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 5c8018977efa..1896e868854f 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -461,8 +461,7 @@ struct request_queue #define QUEUE_FLAG_NONROT 14 /* non-rotational device (SSD) */ #define QUEUE_FLAG_VIRT QUEUE_FLAG_NONROT /* paravirt device */ #define QUEUE_FLAG_IO_STAT 15 /* do IO stats */ -#define QUEUE_FLAG_CQ 16 /* hardware does queuing */ -#define QUEUE_FLAG_DISCARD 17 /* supports DISCARD */ +#define QUEUE_FLAG_DISCARD 16 /* supports DISCARD */ #define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \ (1 << QUEUE_FLAG_CLUSTER) | \ @@ -586,7 +585,6 @@ enum { #define blk_queue_plugged(q) test_bit(QUEUE_FLAG_PLUGGED, &(q)->queue_flags) #define blk_queue_tagged(q) test_bit(QUEUE_FLAG_QUEUED, &(q)->queue_flags) -#define blk_queue_queuing(q) test_bit(QUEUE_FLAG_CQ, &(q)->queue_flags) #define blk_queue_stopped(q) test_bit(QUEUE_FLAG_STOPPED, &(q)->queue_flags) #define blk_queue_nomerges(q) test_bit(QUEUE_FLAG_NOMERGES, &(q)->queue_flags) #define blk_queue_nonrot(q) test_bit(QUEUE_FLAG_NONROT, &(q)->queue_flags) -- cgit v1.2.2