aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux
Commit message (Collapse)AuthorAge
* Merge branch 'master' into upstreamJeff Garzik2006-05-20
|\
| * [ARM] 3531/1: i.MX/MX1 SD/MMC ensure, that clock are stopped before new ↵Pavel Pisa2006-05-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | command and cleanups Patch from Pavel Pisa There has been problems that for some paths that clock are not stopped during new command programming and initiation. Result is issuing of incorrect command to the card. Some other problems are cleaned too. Noisy report of known ERRATUM #4 has been suppressed. Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [PATCH] SPI: busnum == 0 needs to workDavid Brownell2006-05-16
| | | | | | | | | | | | | | | | | | | | | | | | | | We need to be able to have a "SPI bus 0" matching chip numbering; but that number was wrongly used to flag dynamic allocation of a bus number. This patch resolves that issue; now negative numbers trigger dynamic alloc. It also updates the how-to-write-a-controller-driver overview to mention this stuff. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * [PATCH] SPI: devices can require LSB-first encodingsDavid Brownell2006-05-16
| | | | | | | | | | | | | | | | | | | | Add spi_device hook for LSB-first word encoding, and update all the (in-tree) controller drivers to reject such devices. Eventually, some controller drivers will be updated to support lsb-first encodings on the wire; no current drivers need this. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * [PATCH] SPI: Renamed bitbang_transfer_setup to spi_bitbang_setup_transfer ↵Kumar Gala2006-05-16
| | | | | | | | | | | | | | | | | | | | | | | | and export it Renamed bitbang_transfer_setup to follow convention of other exported symbols from spi-bitbang. Exported spi_bitbang_setup_transfer to allow users of spi-bitbang to use the function in their own setup_transfer. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * [PATCH] SPI: spi whitespace fixesDavid Brownell2006-05-16
| | | | | | | | | | | | | | This removes superfluous whitespace in the <linux/spi/spi.h> header. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * [PATCH] SPI: per-transfer overrides for wordsize and clockingImre Deak2006-05-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some protocols (like one for some bitmap displays) require different clock speed or word size settings for each transfer in an SPI message. This adds those parameters to struct spi_transfer. They are to be used when they are nonzero; otherwise the defaults from spi_device are to be used. The patch also adds a setup_transfer callback to spi_bitbang, uses it for messages that use those overrides, and implements it so that the pure bitbanging code can help resolve any questions about how it should work. Signed-off-by: Imre Deak <imre.deak@nokia.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * [PATCH] fix can_share_swap_page() when !CONFIG_SWAPHua Zhong2006-05-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | can_share_swap_page() is used to check if the page has the last reference. This avoids allocating a new page for COW if it's the last page. However, if CONFIG_SWAP is not set, can_share_swap_page() is defined as 0, thus always causes a copy for the last COW page. The below simple patch fixes it. Signed-off-by: Hua Zhong <hzhong@gmail.com> Cc: David Howells <dhowells@redhat.com> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] add slab_is_available() routine for boot codeMike Kravetz2006-05-15
| | | | | | | | | | | | | | | | | | | | slab_is_available() indicates slab based allocators are available for use. SPARSEMEM code needs to know this as it can be called at various times during the boot process. Signed-off-by: Mike Kravetz <kravetz@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] symbol_put_addr() locks kernelTrent Piepho2006-05-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Even since a previous patch: Fix race between CONFIG_DEBUG_SLABALLOC and modules Sun, 27 Jun 2004 17:55:19 +0000 (17:55 +0000) http://www.kernel.org/git/?p=linux/kernel/git/torvalds/old-2.6-bkcvs.git;a=commit;h=92b3db26d31cf21b70e3c1eadc56c179506d8fbe The function symbol_put_addr() will deadlock the kernel. symbol_put_addr() would acquire modlist_lock, then while holding the lock call two functions kernel_text_address() and module_text_address() which also try to acquire the same lock. This deadlocks the kernel of course. This patch changes symbol_put_addr() to not acquire the modlist_lock, it doesn't need it since it never looks at the module list directly. Also, it now uses core_kernel_text() instead of kernel_text_address(). The latter has an additional check for addr inside a module, but we don't need to do that since we call module_text_address() (the same function kernel_text_address uses) ourselves. Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Cc: Zwane Mwaikambo <zwane@fsmlabs.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Johannes Stezenbach <js@linuxtv.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] RCU: introduce rcu_needs_cpu() interfaceHeiko Carstens2006-05-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With "Paul E. McKenney" <paulmck@us.ibm.com> Introduce rcu_needs_cpu() interface. This can be used to tell if there will be a new rcu batch on a cpu soon by looking at the curlist pointer. This can be used to avoid to enter a tickless idle state where the cpu would miss that a new batch is ready when rcu_start_batch would be called on a different cpu. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: "Paul E. McKenney" <paulmck@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * Merge master.kernel.org:/home/rmk/linux-2.6-serialLinus Torvalds2006-05-11
| |\ | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-serial: [SERIAL] 8250: add locking to console write function [SERIAL] Remove unconditional enable of TX irq for console [SERIAL] 8250: set divisor register correctly for AMD Alchemy SoC uart [SERIAL] AMD Alchemy UART: claim memory range [SERIAL] Clean up serial locking when obtaining a reference to a port
| | * [SERIAL] Clean up serial locking when obtaining a reference to a portRussell King2006-04-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The locking for the uart_port is over complicated, and can be simplified if we introduce a flag to indicate that a port is "dead" and will be removed. This also helps the validator because it removes a case of non-nested unlock ordering. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org>
| * | Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2006-05-11
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [NET_SCHED]: HFSC: fix thinko in hfsc_adjust_levels() [IPV6]: skb leakage in inet6_csk_xmit [BRIDGE]: Do sysfs registration inside rtnl. [NET]: Do sysfs registration as part of register_netdevice. [TG3]: Fix possible NULL deref in tg3_run_loopback(). [NET] linkwatch: Handle jiffies wrap-around [IRDA]: Switching to a workqueue for the SIR work [IRDA]: smsc-ircc: Minimal hotplug support. [IRDA]: Removing unused EXPORT_SYMBOLs [IRDA]: New maintainer. [NET]: Make netdev_chain a raw notifier. [IPV4]: ip_options_fragment() has no effect on fragmentation [NET]: Add missing operstates documentation.
| | * | [NET]: Do sysfs registration as part of register_netdevice.Stephen Hemminger2006-05-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The last step of netdevice registration was being done by a delayed call, but because it was delayed, it was impossible to return any error code if the class_device registration failed. Side effects: * one state in registration process is unnecessary. * register_netdevice can sleep inside class_device registration/hotplug * code in netdev_run_todo only does unregistration so it is simpler. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | Merge branch 'upstream' of ↵Linus Torvalds2006-05-10
| |\ \ \ | | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/shemminger/netdev-2.6 * 'upstream' of master.kernel.org:/pub/scm/linux/kernel/git/shemminger/netdev-2.6: sis900: phy for FoxCon motherboard dl2k: use DMA_48BIT_MASK constant phy: mdiobus_register(): initialize all phy_map entries sky2: ifdown kills irq mask
| | * | dl2k: use DMA_48BIT_MASK constantFrancois Romieu2006-05-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Typo will be harder with this one. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
| * | | sky2: backout NAPI rescheduleStephen Hemminger2006-05-08
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | This is a backout of earlier patch. The whole rescheduling hack was a bad idea. It doesn't really solve the problem and it makes the code more complicated for no good reason. Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
| * | [NET]: Create netdev attribute_groups with class_device_addStephen Hemminger2006-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Atomically create attributes when class device is added. This avoids the race between registering class_device (which generates hotplug event), and the creation of attribute groups. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [CLASS DEVICE]: add attribute_group creationStephen Hemminger2006-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Extend the support of attribute groups in class_device's to allow groups to be created as part of the registration process. This allows network device's to avoid race between registration and creating groups. Note that unlike attributes that are a property of the class object, the groups are a property of the class_device object. This is done because there are different types of network devices (wireless for example). Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | Merge branch 'merge' of ↵Linus Torvalds2006-05-04
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [PATCH] powerpc: Use the ibm,pa-features property if available powerpc: Fix incorrect might_sleep in __get_user/__put_user on kernel addresses [PATCH] ppc32 CPM_UART: fixes and improvements [PATCH] ppc32 CPM_UART: Fixed break send on SCC [PATCH] powerpc/kprobes: fix singlestep out-of-line [PATCH] powerpc/pseries: avoid crash in PCI code if mem system not up
| | * | [PATCH] ppc32 CPM_UART: fixes and improvementsVitaly Bordug2006-05-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A number of small issues are fixed, and added the header file, missed from the original series. With this, driver should be pretty stable as tested among both platform-device-driven and "old way" boards. Also added missing GPL statement , and updated year field on existing ones to reflect code update. Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | Merge master.kernel.org:/home/rmk/linux-2.6-mmcLinus Torvalds2006-05-04
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-mmc: [MMC] Move set_ios debugging into mmc.c [MMC] Correct mmc_request_done comments [MMC] PXA: reduce the number of lines PXAMCI debug uses [MMC] PXA and i.MX: don't avoid sending stop command on error [MMC] extend data timeout for writes [ARM] 3485/1: i.MX: MX1 SD/MMC fix of unintentional double start possibility
| | * | | [MMC] extend data timeout for writesRussell King2006-05-02
| | | |/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | The CSD contains a "read2write factor" which determines the multiplier to be applied to the read timeout to obtain the write timeout. We were ignoring this parameter, resulting in the possibility for writes being timed out too early. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | Merge branch 'splice' of git://brick.kernel.dk/data/git/linux-2.6-blockLinus Torvalds2006-05-04
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'splice' of git://brick.kernel.dk/data/git/linux-2.6-block: [PATCH] compat_sys_vmsplice: one-off in UIO_MAXIOV check [PATCH] splice: redo page lookup if add_to_page_cache() returns -EEXIST [PATCH] splice: rename remaining info variables to pipe [PATCH] splice: LRU fixups [PATCH] splice: fix unlocking of page on error ->prepare_write()
| | * | | [PATCH] splice: LRU fixupsJens Axboe2006-05-04
| | | |/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | Nick says that the current construct isn't safe. This goes back to the original, but sets PIPE_BUF_FLAG_LRU on user pages as well as they all seem to be on the LRU in the first place. Signed-off-by: Jens Axboe <axboe@suse.de>
| * / | [NETFILTER]: H.323 helper: Change author's email addressJing Min Zhao2006-05-04
| |/ / | | | | | | | | | | | | | | | Signed-off-by: Jing Min Zhao <zhaojingmin@users.sourceforge.net> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge branch 'master' into upstreamJeff Garzik2006-05-02
|\| |
| * | [PATCH] vmsplice: restrict stealing a little moreJens Axboe2006-05-02
| | | | | | | | | | | | | | | | | | | | | Apply the same rules as the anon pipe pages, only allow stealing if no one else is using the page. Signed-off-by: Jens Axboe <axboe@suse.de>
| * | [PATCH] splice: fix page LRU accountingJens Axboe2006-05-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently we rely on the PIPE_BUF_FLAG_LRU flag being set correctly to know whether we need to fiddle with page LRU state after stealing it, however for some origins we just don't know if the page is on the LRU list or not. So remove PIPE_BUF_FLAG_LRU and do this check/add manually in pipe_to_file() instead. Signed-off-by: Jens Axboe <axboe@suse.de>
| * | Merge branch 'audit.b10' of ↵Linus Torvalds2006-05-02
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current * 'audit.b10' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current: [PATCH] Audit Filter Performance [PATCH] Rework of IPC auditing [PATCH] More user space subject labels [PATCH] Reworked patch for labels on user space messages [PATCH] change lspp ipc auditing [PATCH] audit inode patch [PATCH] support for context based audit filtering, part 2 [PATCH] support for context based audit filtering [PATCH] no need to wank with task_lock() and pinning task down in audit_syscall_exit() [PATCH] drop task argument of audit_syscall_{entry,exit} [PATCH] drop gfp_mask in audit_log_exit() [PATCH] move call of audit_free() into do_exit() [PATCH] sockaddr patch [PATCH] deal with deadlocks in audit_free()
| | * | [PATCH] Rework of IPC auditingSteve Grubb2006-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) The audit_ipc_perms() function has been split into two different functions: - audit_ipc_obj() - audit_ipc_set_perm() There's a key shift here... The audit_ipc_obj() collects the uid, gid, mode, and SElinux context label of the current ipc object. This audit_ipc_obj() hook is now found in several places. Most notably, it is hooked in ipcperms(), which is called in various places around the ipc code permforming a MAC check. Additionally there are several places where *checkid() is used to validate that an operation is being performed on a valid object while not necessarily having a nearby ipcperms() call. In these locations, audit_ipc_obj() is called to ensure that the information is captured by the audit system. The audit_set_new_perm() function is called any time the permissions on the ipc object changes. In this case, the NEW permissions are recorded (and note that an audit_ipc_obj() call exists just a few lines before each instance). 2) Support for an AUDIT_IPC_SET_PERM audit message type. This allows for separate auxiliary audit records for normal operations on an IPC object and permissions changes. Note that the same struct audit_aux_data_ipcctl is used and populated, however there are separate audit_log_format statements based on the type of the message. Finally, the AUDIT_IPC block of code in audit_free_aux() was extended to handle aux messages of this new type. No more mem leaks I hope ;-) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | * | [PATCH] More user space subject labelsSteve Grubb2006-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hi, The patch below builds upon the patch sent earlier and adds subject label to all audit events generated via the netlink interface. It also cleans up a few other minor things. Signed-off-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | * | [PATCH] Reworked patch for labels on user space messagesSteve Grubb2006-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The below patch should be applied after the inode and ipc sid patches. This patch is a reworking of Tim's patch that has been updated to match the inode and ipc patches since its similar. [updated: > Stephen Smalley also wanted to change a variable from isec to tsec in the > user sid patch. ] Signed-off-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | * | [PATCH] change lspp ipc auditingSteve Grubb2006-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hi, The patch below converts IPC auditing to collect sid's and convert to context string only if it needs to output an audit record. This patch depends on the inode audit change patch already being applied. Signed-off-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | * | [PATCH] audit inode patchSteve Grubb2006-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, we were gathering the context instead of the sid. Now in this patch, we gather just the sid and convert to context only if an audit event is being output. This patch brings the performance hit from 146% down to 23% Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | * | [PATCH] support for context based audit filteringDarrel Goeddel2006-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following patch provides selinux interfaces that will allow the audit system to perform filtering based on the process context (user, role, type, sensitivity, and clearance). These interfaces will allow the selinux module to perform efficient matches based on lower level selinux constructs, rather than relying on context retrievals and string comparisons within the audit module. It also allows for dominance checks on the mls portion of the contexts that are impossible with only string comparisons. Signed-off-by: Darrel Goeddel <dgoeddel@trustedcs.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | * | [PATCH] drop task argument of audit_syscall_{entry,exit}Al Viro2006-05-01
| | |/ | | | | | | | | | | | | | | | ... it's always current, and that's a good thing - allows simpler locking. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | [NETFILTER] x_tables: fix compat related crash on non-x86Patrick McHardy2006-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When iptables userspace adds an ipt_standard_target, it calculates the size of the entire entry as: sizeof(struct ipt_entry) + XT_ALIGN(sizeof(struct ipt_standard_target)) ipt_standard_target looks like this: struct xt_standard_target { struct xt_entry_target target; int verdict; }; xt_entry_target contains a pointer, so when compiled for 64 bit the structure gets an extra 4 byte of padding at the end. On 32 bit architectures where iptables aligns to 8 byte it will also have 4 byte padding at the end because it is only 36 bytes large. The compat_ipt_standard_fn in the kernel adjusts the offsets by sizeof(struct ipt_standard_target) - sizeof(struct compat_ipt_standard_target), which will always result in 4, even if the structure from userspace was already padded to a multiple of 8. On x86 this works out by accident because userspace only aligns to 4, on all other architectures this is broken and causes incorrect adjustments to the size and following offsets. Thanks to Linus for lots of debugging help and testing. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | Merge branch 'splice' of git://brick.kernel.dk/data/git/linux-2.6-blockLinus Torvalds2006-05-01
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'splice' of git://brick.kernel.dk/data/git/linux-2.6-block: [PATCH] vmsplice: allow user to pass in gift pages [PATCH] pipe: enable atomic copying of pipe data to/from user space [PATCH] splice: call handle_ra_miss() on failure to lookup page [PATCH] Add ->splice_read/splice_write to def_blk_fops [PATCH] pipe: introduce ->pin() buffer operation [PATCH] splice: fix bugs in pipe_to_file() [PATCH] splice: fix bugs with stealing regular pipe pages
| | * | [PATCH] vmsplice: allow user to pass in gift pagesJens Axboe2006-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If SPLICE_F_GIFT is set, the user is basically giving this pages away to the kernel. That means we can steal them for eg page cache uses instead of copying it. The data must be properly page aligned and also a multiple of the page size in length. Signed-off-by: Jens Axboe <axboe@suse.de>
| | * | [PATCH] pipe: enable atomic copying of pipe data to/from user spaceJens Axboe2006-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The pipe ->map() method uses kmap() to virtually map the pages, which is both slow and has known scalability issues on SMP. This patch enables atomic copying of pipe pages, by pre-faulting data and using kmap_atomic() instead. lmbench bw_pipe and lat_pipe measurements agree this is a Good Thing. Here are results from that on a UP machine with highmem (1.5GiB of RAM), running first a UP kernel, SMP kernel, and SMP kernel patched. Vanilla-UP: Pipe bandwidth: 1622.28 MB/sec Pipe bandwidth: 1610.59 MB/sec Pipe bandwidth: 1608.30 MB/sec Pipe latency: 7.3275 microseconds Pipe latency: 7.2995 microseconds Pipe latency: 7.3097 microseconds Vanilla-SMP: Pipe bandwidth: 1382.19 MB/sec Pipe bandwidth: 1317.27 MB/sec Pipe bandwidth: 1355.61 MB/sec Pipe latency: 9.6402 microseconds Pipe latency: 9.6696 microseconds Pipe latency: 9.6153 microseconds Patched-SMP: Pipe bandwidth: 1578.70 MB/sec Pipe bandwidth: 1579.95 MB/sec Pipe bandwidth: 1578.63 MB/sec Pipe latency: 9.1654 microseconds Pipe latency: 9.2266 microseconds Pipe latency: 9.1527 microseconds Signed-off-by: Jens Axboe <axboe@suse.de>
| | * | [PATCH] pipe: introduce ->pin() buffer operationJens Axboe2006-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ->map() function is really expensive on highmem machines right now, since it has to use the slower kmap() instead of kmap_atomic(). Splice rarely needs to access the virtual address of a page, so it's a waste of time doing it. Introduce ->pin() to take over the responsibility of making sure the page data is valid. ->map() is then reduced to just kmap(). That way we can also share a most of the pipe buffer ops between pipe.c and splice.c Signed-off-by: Jens Axboe <axboe@suse.de>
| | * | [PATCH] splice: fix bugs in pipe_to_file()Jens Axboe2006-05-01
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Found by Oleg Nesterov <oleg@tv-sign.ru>, fixed by me. - Only allow full pages to go to the page cache. - Check page != buf->page instead of using PIPE_BUF_FLAG_STOLEN. - Remember to clear 'stolen' if add_to_page_cache() fails. And as a cleanup on that: - Make the bottom fall-through logic a little less convoluted. Also make the steal path hold an extra reference to the page, so we don't have to differentiate between stolen and non-stolen at the end. Signed-off-by: Jens Axboe <axboe@suse.de>
| * | Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2006-05-01
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [TG3]: Update version and reldate [TG3]: Fix bug in nvram write [TG3]: Add reset_phy parameter to chip reset functions [TG3]: Reset chip when changing MAC address [TG3]: Add phy workaround [TG3]: Call netif_carrier_off() during phy reset [IPV6]: Fix race in route selection. [XFRM]: fix incorrect xfrm_policy_afinfo_lock use [XFRM]: fix incorrect xfrm_state_afinfo_lock use [TCP]: Fix unlikely usage in tcp_transmit_skb() [XFRM]: fix softirq-unsafe xfrm typemap->lock use [IPSEC]: Fix IP ID selection [NET]: use hlist_unhashed() [IPV4]: inet_init() -> fs_initcall [NETLINK]: cleanup unused macro in net/netlink/af_netlink.c [PKT_SCHED] netem: fix loss [X25]: fix for spinlock recurse and spinlock lockup with timer handler
| | * | [NET]: use hlist_unhashed()Akinobu Mita2006-04-29
| | |/ | | | | | | | | | | | | | | | | | | | | | Use hlist_unhashed() rather than accessing inside data structure. Signed-off-by: Akinobu Mita <mita@miraclelinux.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | Input: ressurect EVIOCGREP and EVIOCSREPDmitry Torokhov2006-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | While writing to an event device allows to set repeat rate for an individual input device there is no way to retrieve current settings so we need to ressurect EVIOCGREP. Also ressurect EVIOCSREP so we have a symmetrical interface. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
| * | Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6Dmitry Torokhov2006-04-29
| |\|
| | * [PATCH] request_irq(): remove warnings from irq probingAndrew Morton2006-04-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Add new SA_PROBEIRQ which suppresses the new sharing-mismatch warning. Some drivers like to use request_irq() to find an unused interrupt slot. - Use it in i82365.c - Kill unused SA_PROBE. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| | * Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds2006-04-27
| | |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: [PATCH] Added URI of "linux kernel development process" [PATCH] Kobject: possible cleanups [PATCH] Fix OCFS2 warning when DEBUG_FS is not enabled [PATCH] Kobject: fix build error [PATCH] Frame buffer: remove cmap sysfs interface
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-28 13:06:17 -0500