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* [PATCH] PM: Fix SMP races in the freezerRafael J. Wysocki2006-12-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, to tell a task that it should go to the refrigerator, we set the PF_FREEZE flag for it and send a fake signal to it. Unfortunately there are two SMP-related problems with this approach. First, a task running on another CPU may be updating its flags while the freezer attempts to set PF_FREEZE for it and this may leave the task's flags in an inconsistent state. Second, there is a potential race between freeze_process() and refrigerator() in which freeze_process() running on one CPU is reading a task's PF_FREEZE flag while refrigerator() running on another CPU has just set PF_FROZEN for the same task and attempts to reset PF_FREEZE for it. If the refrigerator wins the race, freeze_process() will state that PF_FREEZE hasn't been set for the task and will set it unnecessarily, so the task will go to the refrigerator once again after it's been thawed. To solve first of these problems we need to stop using PF_FREEZE to tell tasks that they should go to the refrigerator. Instead, we can introduce a special TIF_*** flag and use it for this purpose, since it is allowed to change the other tasks' TIF_*** flags and there are special calls for it. To avoid the freeze_process()-refrigerator() race we can make freeze_process() to always check the task's PF_FROZEN flag after it's read its "freeze" flag. We should also make sure that refrigerator() will always reset the task's "freeze" flag after it's set PF_FROZEN for it. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Russell King <rmk@arm.linux.org.uk> Cc: David Howells <dhowells@redhat.com> Cc: Andi Kleen <ak@muc.de> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] SLAB: use a multiply instead of a divide in obj_to_index()Eric Dumazet2006-12-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When some objects are allocated by one CPU but freed by another CPU we can consume lot of cycles doing divides in obj_to_index(). (Typical load on a dual processor machine where network interrupts are handled by one particular CPU (allocating skbufs), and the other CPU is running the application (consuming and freeing skbufs)) Here on one production server (dual-core AMD Opteron 285), I noticed this divide took 1.20 % of CPU_CLK_UNHALTED events in kernel. But Opteron are quite modern cpus and the divide is much more expensive on oldest architectures : On a 200 MHz sparcv9 machine, the division takes 64 cycles instead of 1 cycle for a multiply. Doing some math, we can use a reciprocal multiplication instead of a divide. If we want to compute V = (A / B) (A and B being u32 quantities) we can instead use : V = ((u64)A * RECIPROCAL(B)) >> 32 ; where RECIPROCAL(B) is precalculated to ((1LL << 32) + (B - 1)) / B Note : I wrote pure C code for clarity. gcc output for i386 is not optimal but acceptable : mull 0x14(%ebx) mov %edx,%eax // part of the >> 32 xor %edx,%edx // useless mov %eax,(%esp) // could be avoided mov %edx,0x4(%esp) // useless mov (%esp),%ebx [akpm@osdl.org: small cleanups] Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cpuset: rework cpuset_zone_allowed apiPaul Jackson2006-12-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Elaborate the API for calling cpuset_zone_allowed(), so that users have to explicitly choose between the two variants: cpuset_zone_allowed_hardwall() cpuset_zone_allowed_softwall() Until now, whether or not you got the hardwall flavor depended solely on whether or not you or'd in the __GFP_HARDWALL gfp flag to the gfp_mask argument. If you didn't specify __GFP_HARDWALL, you implicitly got the softwall version. Unfortunately, this meant that users would end up with the softwall version without thinking about it. Since only the softwall version might sleep, this led to bugs with possible sleeping in interrupt context on more than one occassion. The hardwall version requires that the current tasks mems_allowed allows the node of the specified zone (or that you're in interrupt or that __GFP_THISNODE is set or that you're on a one cpuset system.) The softwall version, depending on the gfp_mask, might allow a node if it was allowed in the nearest enclusing cpuset marked mem_exclusive (which requires taking the cpuset lock 'callback_mutex' to evaluate.) This patch removes the cpuset_zone_allowed() call, and forces the caller to explicitly choose between the hardwall and the softwall case. If the caller wants the gfp_mask to determine this choice, they should (1) be sure they can sleep or that __GFP_HARDWALL is set, and (2) invoke the cpuset_zone_allowed_softwall() routine. This adds another 100 or 200 bytes to the kernel text space, due to the few lines of nearly duplicate code at the top of both cpuset_zone_allowed_* routines. It should save a few instructions executed for the calls that turned into calls of cpuset_zone_allowed_hardwall, thanks to not having to set (before the call) then check (within the call) the __GFP_HARDWALL flag. For the most critical call, from get_page_from_freelist(), the same instructions are executed as before -- the old cpuset_zone_allowed() routine it used to call is the same code as the cpuset_zone_allowed_softwall() routine that it calls now. Not a perfect win, but seems worth it, to reduce this chance of hitting a sleeping with irq off complaint again. Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] More slab.h cleanupsChristoph Lameter2006-12-13
| | | | | | | | | | | | | | | | | | | | | More cleanups for slab.h 1. Remove tabs from weird locations as suggested by Pekka 2. Drop the check for NUMA and SLAB_DEBUG from the fallback section as suggested by Pekka. 3. Uses static inline for the fallback defs as also suggested by Pekka. 4. Make kmem_ptr_valid take a const * argument. 5. Separate the NUMA fallback definitions from the kmalloc_track fallback definitions. Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Cleanup slab headers / API to allow easy addition of new slab allocatorsChristoph Lameter2006-12-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | This is a response to an earlier discussion on linux-mm about splitting slab.h components per allocator. Patch is against 2.6.19-git11. See http://marc.theaimsgroup.com/?l=linux-mm&m=116469577431008&w=2 This patch cleans up the slab header definitions. We define the common functions of slob and slab in slab.h and put the extra definitions needed for slab's kmalloc implementations in <linux/slab_def.h>. In order to get a greater set of common functions we add several empty functions to slob.c and also rename slob's kmalloc to __kmalloc. Slob does not need any special definitions since we introduce a fallback case. If there is no need for a slab implementation to provide its own kmalloc mess^H^H^Hacros then we simply fall back to __kmalloc functions. That is sufficient for SLOB. Sort the function in slab.h according to their functionality. First the functions operating on struct kmem_cache * then the kmalloc related functions followed by special debug and fallback definitions. Also redo a lot of comments. Signed-off-by: Christoph Lameter <clameter@sgi.com>? Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] reorder struct pipe_buf_operationsEric Dumazet2006-12-13
| | | | | | | | | | | | | | | | | | | | | | | | | | Fields of struct pipe_buf_operations have not a precise layout (ie not optimized to fit cache lines nor reduce cache line ping pongs) The bufs[] array is *large* and is placed near the beginning of the structure, so all following fields have a large offset. This is unfortunate because many archs have smaller instructions when using small offsets relative to a base register. On x86 for example, 7 bits offsets have smaller instruction lengths. Moving bufs[] at the end of pipe_buf_operations permits all fields to have small offsets, and reduce text size, and icache pressure. # size vmlinux.pre vmlinux text data bss dec hex filename 3268989 664356 492196 4425541 438745 vmlinux.pre 3268765 664356 492196 4425317 438665 vmlinux So this patch reduces text size by 224 bytes on my x86_64 machine. Similar results on ia32. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Revert "[PATCH] identifier to nsproxy"Eric W. Biederman2006-12-13
| | | | | | | | | | | | | | | | | | | This reverts commit 373beb35cd6b625e0ba4ad98baace12310a26aa8. No one is using this identifier yet. The purpose of this identifier is to export nsproxy to user space which is wrong. nsproxy is an internal implementation optimization, which should keep our fork times from getting slower as we increase the number of global namespaces you don't have to share. Adding a global identifier like this is inappropriate because it makes namespaces inherently non-recursive, greatly limiting what we can do with them in the future. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] constify pipe_buf_operationsEric Dumazet2006-12-13
| | | | | | | | | | | - pipe/splice should use const pipe_buf_operations and file_operations - struct pipe_inode_info has an unused field "start" : get rid of it. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge branch 'release' of ↵Linus Torvalds2006-12-12
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] kprobe clears qp bits for special instructions [IA64] enable trap code on slot 1 [IA64] Take defensive stance on ia64_pal_get_brand_info() [IA64] fix possible XPC deadlock when disconnecting [IA64] - Reduce overhead of FP exception logging messages [IA64] fix arch/ia64/mm/contig.c:235: warning: unused variable `nid' [IA64] s/termios/ktermios/ in simserial.c [IA64] kexec/kdump: tidy up declaration of relocate_new_kernel_t [IA64] Kexec/Kdump: honour non-zero crashkernel offset. [IA64] CONFIG_KEXEC/CONFIG_CRASH_DUMP permutations [IA64] Do not call SN_SAL_SET_CPU_NUMBER twice on cpu 0
| * [IA64] enable trap code on slot 1Tony Luck2006-12-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Because slot 1 of one instr bundle crosses border of two consecutive 8-bytes, kprobe on slot 1 is disabled. This patch enables kprobe on slot1, it only replaces higher 8-bytes of the instruction bundle and changes the exception code to ignore the low 12 bits of the break number (which is across the border in the lower 8-bytes of the bundle). For those instructions which must execute regardless qp bits, kprobe on slot 1 is still disabled. Signed-off-by: bibo,mao <bibo.mao@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] fix possible XPC deadlock when disconnectingDean Nelson2006-12-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch eliminates a potential deadlock that is possible when XPC disconnects a channel to a partition that has gone down. This deadlock will occur if at least one of the kthreads created by XPC for the purpose of making callouts to the channel's registerer is detained in the registerer and will not be returning back to XPC until some registerer request occurs on the now downed partition. The potential for a deadlock is removed by ensuring that there always is a kthread available to make the channel disconnecting callout to the registerer. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | Merge branch 'for-linus' of ↵Linus Torvalds2006-12-12
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband: IPoIB: Make sure struct ipoib_neigh.queue is always initialized IB/iser: Use the new verbs DMA mapping functions IB/srp: Use new verbs IB DMA mapping functions IPoIB: Use the new verbs DMA mapping functions IB/core: Use the new verbs DMA mapping functions IB/ipath: Implement new verbs DMA mapping functions IB: Add DMA mapping functions to allow device drivers to interpose RDMA/cma: Export rdma cm interface to userspace RDMA/cma: Add support for RDMA_PS_UDP RDMA/cma: Allow early transition to RTS to handle lost CM messages RDMA/cma: Report connect info with connect events RDMA/cma: Remove unneeded qp_type parameter from rdma_cm IB/ipath: Fix IRQ for PCI Express HCAs RDMA/amso1100: Fix memory leak in c2_qp_modify() IB/iser: Remove unused "write-only" variables IB/ipath: Remove unused "write-only" variables IB/fmr: ib_flush_fmr_pool() may wait too long
| * | IB: Add DMA mapping functions to allow device drivers to interposeRalph Campbell2006-12-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The QLogic InfiniPath HCAs use programmed I/O instead of HW DMA. This patch allows a verbs device driver to interpose on DMA mapping function calls in order to avoid relying on bus_to_virt() and phys_to_virt() to undo the mappings created by dma_map_single(), dma_map_sg(), etc. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * | RDMA/cma: Export rdma cm interface to userspaceSean Hefty2006-12-12
| | | | | | | | | | | | | | | | | | | | | Export the rdma cm interfaces to userspace via a misc device. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * | RDMA/cma: Add support for RDMA_PS_UDPSean Hefty2006-12-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow the use of UD QPs through the rdma_cm, in order to provide address translation services for resolving IB addresses for datagram messages using SIDR. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * | RDMA/cma: Allow early transition to RTS to handle lost CM messagesSean Hefty2006-12-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During connection establishment, the passive side of a connection can receive messages from the active side before the connection event has been delivered to the user. Allow the passive side to send messages in response to received data before the event is delivered. To handle the case where the connection messages are lost, a new rdma_notify() function is added that users may invoke to force a connection into the established state. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * | RDMA/cma: Report connect info with connect eventsSean Hefty2006-12-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Connection information was never given to the recipient of a connection request or reply message. Only the event was delivered. Report the connection data with the event to allows user to reject the connection based on the requested parameters, or adjust their resources to match the request. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * | RDMA/cma: Remove unneeded qp_type parameter from rdma_cmSean Hefty2006-12-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | The qp_type parameter into the rdma_cm is unneeded, and can be misleading. The QP type should be determined from the port space. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivialLinus Torvalds2006-12-12
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: Fix inotify maintainers entry Fix typo in new debug options. Jon needs a new shift key. fs: Convert kmalloc() + memset() to kzalloc() in fs/. configfs.h: Remove dead macro definitions. kconfig: Standardize "depends" -> "depends on" in Kconfig files e100: replace kmalloc with kcalloc um: replace kmalloc+memset with kzalloc fix typo in net/ipv4/ip_fragment.c include/linux/compiler.h: reject gcc 3 < gcc 3.2 Kconfig: fix spelling error in config KALLSYMS help text Remove duplicate "have to" in comment Fix small typo in drivers/serial/icom.c Use consistent casing in help message EXT{2,3,4}_FS: remove outdated part of the help text
| * | | configfs.h: Remove dead macro definitions.Robert P. J. Day2006-12-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delete the __ATTR-related macro definitions since these are now defined in include/linux/sysfs.h. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
| * | | include/linux/compiler.h: reject gcc 3 < gcc 3.2Alistair John Strachan2006-12-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The kernel doesn't compile with GCC <3.2, do not allow it to succeed if GCC 3.0.x or 3.1.x are used. Signed-off-by: Alistair John Strachan <s0348365@sms.ed.ac.uk> Signed-off-by: Adrian Bunk <bunk@stusta.de>
| * | | Remove duplicate "have to" in commentRolf Eike Beer2006-12-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduced in commit 7cc13edc139108bb527b692f0548dce6bc648572. Signed-off-by: Rolf Eike Beer <eike-kernel@sf-tec.de> Acked-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* | | | Merge ../linusDave Jones2006-12-12
|\ \ \ \ | | |/ / | |/| | | | | | | | | | | | | | Conflicts: drivers/cpufreq/cpufreq.c
| * | | Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds2006-12-12
| |\ \ \ | | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: i2c: Fix OMAP clock prescaler to match the comment i2c: Refactor a kfree in i2c-dev i2c: Fix return value check in i2c-dev i2c: Enable PEC on more i2c-i801 devices i2c: Discard the i2c algo del_bus wrappers i2c: New ARM Versatile/Realview bus driver i2c: fix broken ds1337 initialization i2c: i2c-i801 documentation update i2c: Use the __ATTR macro where possible i2c: Whitespace cleanups i2c: Use put_user instead of copy_to_user where possible i2c: New Atmel AT91 bus driver i2c: Add support for nested i2c bus locking i2c: Cleanups to the i2c-nforce2 bus driver i2c: Add request/release_mem_region to i2c-ibm_iic bus driver i2c: New Philips PNX bus driver i2c: Delete the broken i2c-ite bus driver i2c: Update the list of driver IDs i2c: Fix documentation typos
| | * | i2c: Discard the i2c algo del_bus wrappersJean Delvare2006-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | They are all only calling i2c_del_adapter, so we may as well do it directly. Signed-off-by: Jean Delvare <khali@linux-fr.org>
| | * | i2c: Whitespace cleanupsDavid Brownell2006-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove extraneous whitespace from various i2c headers and core files, like space-before-tab and whitespace at end of line. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
| | * | i2c: Add support for nested i2c bus lockingJiri Kosina2006-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the 'level' field into the i2c_adapter structure, which is used to represent the 'logical' level of nesting for the purposes of lockdep. This field is then used in the i2c_transfer() function, to acquire the per-adapter bus_lock with correct nesting level. Signed-off-by: Jiri Kosina <jikos@jikos.cz> Signed-off-by: Jean Delvare <khali@linux-fr.org>
| | * | i2c: New Philips PNX bus driverVitaly Wool2006-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | New I2C bus driver for Philips ARM boards (Philips IP3204 I2C IP block). This I2C controller can be found on (at least) PNX010x, PNX52xx and PNX4008 Philips boards. Signed-off-by: Vitaly Wool <vitalywool@gmail.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
| | * | i2c: Delete the broken i2c-ite bus driverJean Delvare2006-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The rest of the ITE8172 support was already removed from MIPS tree. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Acked-by: Ralf Baechle <ralf@linux-mips.org>
| | * | i2c: Update the list of driver IDsJean Delvare2006-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * A chip driver ID was assigned to the Radeon, while it is an adapter so it needs an i2c adapter ID. * The SAA7191 is a video decoder, not encoder. * The icspll driver is dead, and will never be ported to Linux 2.6. Signed-off-by: Jean Delvare <khali@linux-fr.org>
| * | | Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds2006-12-12
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: (29 commits) sh: Fixup SH-2 BUG() trap handling. sh: Use early_param() for earlyprintk parsing. sh: Fix .empty_zero_page alignment for PAGE_SIZE > 4096. sh: Fixup .data.page_aligned. sh: Hook up SH7722 scif ipr interrupts. sh: Fixup sh_bios() trap handling. sh: SH-MobileR SH7722 CPU support. sh: Fixup dma_cache_sync() callers. sh: Convert remaining remap_area_pages() users to ioremap_page_range(). sh: Fixup kernel_execve() for syscall cleanups. sh: Fix get_wchan(). sh: BUG() handling through trapa vector. rtc: rtc-sh: alarm support. rtc: rtc-sh: fix rtc for out-by-one for the month. sh: Kill off unused SE7619 I/O ops. serial: sh-sci: Shut up various sci_rxd_in() gcc4 warnings. sh: Split out atomic ops logically. sh: Fix Solution Engine 7619 build. sh: Trivial build fixes for SH-2 support. sh: IPR IRQ updates for SH7619/SH7206. ...
| | * | | sh: SH-MobileR SH7722 CPU support.Paul Mundt2006-12-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds CPU support for the SH7722. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | | sh: Fixup dma_cache_sync() callers.Paul Mundt2006-12-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This now takes a struct device, update all of the callers. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | | sh: BUG() handling through trapa vector.Paul Mundt2006-12-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously we haven't been doing anything with verbose BUG() reporting, and we've been relying on the oops path for handling BUG()'s, which is rather sub-optimal. This switches BUG handling to use a fixed trapa vector (#0x3e) where we construct a small bug frame post trapa instruction to get the context right. This also makes it trivial to wire up a DIE_BUG for the atomic die chain, which we couldn't really do before. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | | sh: Split out atomic ops logically.Paul Mundt2006-12-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We have a few different ways to do the atomic operations, so split them out in to different headers rather than bloating atomic.h. Kernelspace gUSA will take this up to a third implementation. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | | sh: landisk board build fixes.Paul Mundt2006-12-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Get the landisk board building again.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | | sh: push-switch fixups for work_struct API damage.Paul Mundt2006-12-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | INIT_WORK() dropped the data arg, so now we have to stash an extra pointer and backpedal instead. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | | sh: Shut up csum_ipv6_magic() warnings.Paul Mundt2006-12-11
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | | sh: Reworked swap cache entry encoding for SH-X2 MMU.Paul Mundt2006-12-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the 64-bit PTE case there's no point in restricting the encoding to the low bits of the PTE, we can instead bump all of this up to the high 32 bits and extend PTE_FILE_MAX_BITS to 32, adopting the same convention used by x86 PAE. There's a minor discrepency between the number of bits used for the swap type encoding between 32 and 64-bit PTEs, but this is unlikely to cause any problem given the extended offset. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | [PATCH] lockdep: fix seqlock_init()Ingo Molnar2006-12-12
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | seqlock_init() needs to use spin_lock_init() for dynamic locks, so that lockdep is notified about the presence of a new lock. (this is a fallout of the recent networking merge, which started using the so-far unused seqlock_init() API.) This fix solves the following lockdep-internal warning on current -git: INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. __lock_acquire+0x10c/0x9f9 lock_acquire+0x56/0x72 _spin_lock+0x35/0x42 neigh_destroy+0x9d/0x12e neigh_periodic_timer+0x10a/0x15c run_timer_softirq+0x126/0x18e __do_softirq+0x6b/0xe6 do_softirq+0x64/0xd2 ksoftirqd+0x82/0x138 Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] remove blk_queue_activity_fnBoaz Harrosh2006-12-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While working on bidi support at struct request level I have found that blk_queue_activity_fn is actually never used. The only user is in ide-probe.c with this code: /* enable led activity for disk drives only */ if (drive->media == ide_disk && hwif->led_act) blk_queue_activity_fn(q, hwif->led_act, drive); And led_act is never initialized anywhere. (Looking back at older kernels it was used in the PPC arch, but was removed around 2.6.18) Unless it is all for future use off course. (this patch is against linux-2.6-block.git as off 2006/12/4) Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | | Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2006-12-11
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (32 commits) [NETPOLL]: Fix local_bh_enable() warning. [IPVS]: Make ip_vs_sync.c <= 80col wide. [IPVS]: Use msleep_interruptable() instead of ssleep() aka msleep() [HAMRADIO]: Fix baycom_epp.c compile failure. [DCCP]: Whitespace cleanups [DCCP] ccid3: Fixup some type conversions related to rtts [DCCP] ccid3: BUG-FIX - conversion errors [DCCP] ccid3: Reorder packet history source file [DCCP] ccid3: Reorder packet history header file [DCCP] ccid3: Make debug output consistent [DCCP] ccid3: Perform history operations only after packet has been sent [DCCP] ccid3: TX history - remove unused field [DCCP] ccid3: Shift window counter computation [DCCP] ccid3: Sanity-check RTT samples [DCCP] ccid3: Initialise RTT values [DCCP] ccid: Deprecate ccid_hc_tx_insert_options [DCCP]: Warn when discarding packet due to internal errors [DCCP]: Only deliver to the CCID rx side in charge [DCCP]: Simplify TFRC calculation [DCCP]: Debug timeval operations ...
| | * | | [HAMRADIO]: Fix baycom_epp.c compile failure.Ralf Baechle2006-12-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix foobar in 15b1c0e822f578306332d4f4c449250db5c5dceb and e8cc49bb0fdb9e18a99e6780073d1400ba2b0d1f patch series. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | [DCCP]: Whitespace cleanupsArnaldo Carvalho de Melo2006-12-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | That accumulated over the last months hackaton, shame on me for not using git-apply whitespace helping hand, will do that from now on. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
| | * | | [DCCP] ccid3: Finer-grained resolution of sending ratesGerrit Renker2006-12-11
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch * resolves a bug where packets smaller than 32/64 bytes resulted in sending rates of 0 * supports all sending rates from 1/64 bytes/second up to 4Gbyte/second * simplifies the present overflow problems in calculations Current sending rate X and the cached value X_recv of the receiver-estimated sending rate are both scaled by 64 (2^6) in order to * cope with low sending rates (minimally 1 byte/second) * allow upgrading to use a packets-per-second implementation of CCID 3 * avoid calculation errors due to integer arithmetic cut-off The patch implements a revised strategy from http://www.mail-archive.com/dccp@vger.kernel.org/msg01040.html The only difference with regard to that strategy is that t_ipi is already used in the calculation of the nofeedback timeout, which saves one division. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Acked-by: Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
| * | | Merge branch 'for-linus' of git://www.atmel.no/~hskinnemoen/linux/kernel/avr32Linus Torvalds2006-12-11
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://www.atmel.no/~hskinnemoen/linux/kernel/avr32: [AVR32] Add missing #include <linux/param.h> to delay.c [AVR32] Pass dev parameter to dma_cache_sync() [AVR32] Implement intc_get_pending() [AVR32] Don't include <asm/delay.h> [AVR32] Put the chip in "stop" mode when halting the system [AVR32] Set flow handler for external interrupts [AVR32] Remove unused file [AVR32] Remove mii_phy_addr and eth_addr from eth_platform_data [AVR32] Move ethernet tag parsing to board-specific code [AVR32] Add macb1 platform_device [AVR32] Portmux API update
| | * | | [AVR32] Pass dev parameter to dma_cache_sync()Haavard Skinnemoen2006-12-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix build breakage resulting from the extra dev parameter added to dma_cache_sync(). Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
| | * | | [AVR32] Remove mii_phy_addr and eth_addr from eth_platform_dataHaavard Skinnemoen2006-12-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The macb driver will probe for the PHY chip and read the mac address from the MACB registers, so we don't need them in eth_platform_data anymore. Since u-boot doesn't currently initialize the MACB registers with the mac addresses, the tag parsing code is kept but instead of sticking the information into eth_platform_data, it uses it to initialize the MACB registers (in case the boot loader didn't do it.) This code should be unnecessary at some point in the future. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
| | * | | [AVR32] Portmux API updateHaavard Skinnemoen2006-12-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rename portmux_set_func to at32_select_periph, add at32_select_gpio and add flags parameter to specify the initial state of the pins. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
| * | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpcLinus Torvalds2006-12-11
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (36 commits) [POWERPC] Generic BUG for powerpc [PPC] Fix compile failure do to introduction of PHY_POLL [POWERPC] Only export __mtdcr/__mfdcr if CONFIG_PPC_DCR is set [POWERPC] Remove old dcr.S [POWERPC] Fix SPU coredump code for max_fdset removal [POWERPC] Fix irq routing on some 32-bit PowerMacs [POWERPC] ps3: Add vuart support [POWERPC] Support ibm,dynamic-reconfiguration-memory nodes [POWERPC] dont allow pSeries_probe to succeed without initialising MMU [POWERPC] micro optimise pSeries_probe [POWERPC] Add SPURR SPR to sysfs [POWERPC] Add DSCR SPR to sysfs [POWERPC] Fix 440SPe CPU table entry [POWERPC] Add support for FP emulation for the e300c2 core [POWERPC] of_device_register: propagate device_create_file return code [POWERPC] Fix mmap of PCI resource with hack for X [POWERPC] iSeries: head_64.o needs to depend on lparmap.s [POWERPC] cbe_thermal: Fix initialization of sysfs attribute_group [POWERPC] Remove QE header files from lite5200.c [POWERPC] of_platform_make_bus_id(): make `magic' int ...
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