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* Rename .data.read_mostly to .data..read_mostly.Denys Vlasenko2010-03-03
| | | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* sh64: wire up sys_accept4.Paul Mundt2010-01-19
| | | | | | | | | | | sh64 on the other hand provides both direct broken out syscalls as well as socketcall access. As there are binaries that use both socketcall has to stay around. The current ABI prefers direct syscalls. It was pointed out that when sys_recvmmsg was added in, sys_accept4 was overlooked. This takes care of wiring it up. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: unwire sys_recvmmsg.Paul Mundt2010-01-19
| | | | | | | | sh32 at the moment only uses sys_socketcall to reach these, so unwire recvmmsg for now. While we're at it, add it to the ignore list, as per the s390 change. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Only provide a PCLK definition for legacy CPG CPUs.Paul Mundt2009-12-28
| | | | | | | | | | | | | | | As CPUs are migrated over to more fully-featured clock frameworks of their own and off of the legacy CPG code, they no longer have any real need for defining the PCLK value. The PCLK define in itself is already fairly misleading, as many boards get their input clocks from different sources, making this value fairly arbitrary anyways. Outside of the legacy CPG clock framework, the only place where this value is used is for deriving CLOCK_TICK_RATE, which we set back to the legacy PIT value that it was before the PCLK definitions were added in the first place. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Merge branch 'sh/g3-prep' into sh/for-2.6.33Paul Mundt2009-12-24
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| * Merge branch 'for-33' of git://repo.or.cz/linux-kbuildLinus Torvalds2009-12-17
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-33' of git://repo.or.cz/linux-kbuild: (29 commits) net: fix for utsrelease.h moving to generated gen_init_cpio: fixed fwrite warning kbuild: fix make clean after mismerge kbuild: generate modules.builtin genksyms: properly consider EXPORT_UNUSED_SYMBOL{,_GPL}() score: add asm/asm-offsets.h wrapper unifdef: update to upstream revision 1.190 kbuild: specify absolute paths for cscope kbuild: create include/generated in silentoldconfig scripts/package: deb-pkg: use fakeroot if available scripts/package: add KBUILD_PKG_ROOTCMD variable scripts/package: tar-pkg: use tar --owner=root Kbuild: clean up marker net: add net_tstamp.h to headers_install kbuild: move utsrelease.h to include/generated kbuild: move autoconf.h to include/generated drop explicit include of autoconf.h kbuild: move compile.h to include/generated kbuild: drop include/asm kbuild: do not check for include/asm-$ARCH ... Fixed non-conflicting clean merge of modpost.c as per comments from Stephen Rothwell (modpost.c had grown an include of linux/autoconf.h that needed to be changed to generated/autoconf.h)
| | * sh: move machtypes.h to include/generatedSam Ravnborg2009-12-12
| | | | | | | | | | | | | | | | | | | | | Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Michal Marek <mmarek@suse.cz>
| | * kbuild: move asm-offsets.h to include/generatedSam Ravnborg2009-12-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The simplest method was to add an extra asm-offsets.h file in arch/$ARCH/include/asm that references the generated file. We can now migrate the architectures one-by-one to reference the generated file direct - and when done we can delete the temporary arch/$ARCH/include/asm/asm-offsets.h file. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Michal Marek <mmarek@suse.cz>
* | | sh: Fix up MAX_DMA_CHANNELS definition when DMA is disabled.Paul Mundt2009-12-17
|/ / | | | | | | | | | | | | | | | | MAX_DMA_CHANNELS is tested for the total number of channels in order to populate an IRQ map. Stub this out completely when no DMA support is enabled -- as used to be the default behaviour before this was generalized for use by the dmaengine code. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds2009-12-16
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (33 commits) sh: Fix test of unsigned in se7722_irq_demux() sh: mach-ecovec24: Add FSI sound support sh: mach-ecovec24: Add mt9t112 camera support sh: mach-ecovec24: Add tw9910 support sh: MSIOF/mmc_spi platform data for the Ecovec24 board sh: ms7724se: Add ak4642 support sh: Fix up FPU build for SH5 sh: Remove old early serial console code V2 sh: sh5 scif pdata (sh5-101/sh5-103) sh: sh4a scif pdata (sh7757/sh7763/sh7770/sh7780/sh7785/sh7786/x3) sh: sh4a scif pdata (sh7343/sh7366/sh7722/sh7723/sh7724) sh: sh4 scif pdata (sh7750/sh7760/sh4-202) sh: sh3 scif pdata (sh7705/sh770x/sh7710/sh7720) sh: sh2a scif pdata (sh7201/sh7203/sh7206/mxg) sh: sh2 scif pdata (sh7616) sh-sci: Extend sh-sci driver with early console V2 sh: Stub in P3 ioremap support for nommu parts. sh: wire up vmallocinfo support in ioremap() implementations. sh: Make the unaligned trap handler always obey notification levels. sh: Couple kernel and user write page perm bits for CONFIG_X2TLB ...
| * | sh: Stub in P3 ioremap support for nommu parts.Paul Mundt2009-12-14
| | | | | | | | | | | | | | | | | | | | | p3_ioremap() references __ioremap() which is presently undefined on nommu. This provides a trivial stub to fix the build up. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | sh: wire up vmallocinfo support in ioremap() implementations.Paul Mundt2009-12-14
| | | | | | | | | | | | | | | | | | | | | | | | This wires up the caller information for the ioremap VMA, which allows for more helpful caller tracking via /proc/vmallocinfo. Follows the x86 and powerpc changes of the same nature. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | sh: Couple kernel and user write page perm bits for CONFIG_X2TLBMatt Fleming2009-12-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pte_write() should check whether the permissions include either the user or kernel write permission bits. Likewise, pte_wrprotect() needs to remove both the kernel and user write bits. Without this patch handle_tlbmiss() doesn't handle faulting in pages from the P3 area (our vmalloc space) because of a write. Mappings of the P3 space have the _PAGE_EXT_KERN_WRITE bit but not _PAGE_EXT_USER_WRITE. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | sh: Wire up recvmmsg syscall.Paul Mundt2009-12-11
| |/ | | | | | | | | | | | | The stub already existed in the _64 syscall table, but was lacking a __NR_recvmmsg definition, while it was absent entirely for _32 variants. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | elf: kill USE_ELF_CORE_DUMPChristoph Hellwig2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | Currently all architectures but microblaze unconditionally define USE_ELF_CORE_DUMP. The microblaze omission seems like an error to me, so let's kill this ifdef and make sure we are the same everywhere. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: <linux-arch@vger.kernel.org> Cc: Michal Simek <michal.simek@petalogix.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | locking: Convert raw_rwlock functions to arch_rwlockThomas Gleixner2009-12-14
| | | | | | | | | | | | | | | | | | | | Name space cleanup for rwlock functions. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: linux-arch@vger.kernel.org
* | locking: Convert raw_rwlock to arch_rwlockThomas Gleixner2009-12-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Not strictly necessary for -rt as -rt does not have non sleeping rwlocks, but it's odd to not have a consistent naming convention. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: linux-arch@vger.kernel.org
* | locking: Convert __raw_spin* functions to arch_spin*Thomas Gleixner2009-12-14
| | | | | | | | | | | | | | | | | | | | Name space cleanup. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: linux-arch@vger.kernel.org
* | locking: Rename __RAW_SPIN_LOCK_UNLOCKED to __ARCH_SPIN_LOCK_UNLOCKEDThomas Gleixner2009-12-14
| | | | | | | | | | | | | | | | | | | | Further name space cleanup. No functional change Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: linux-arch@vger.kernel.org
* | locking: Convert raw_spinlock to arch_spinlockThomas Gleixner2009-12-14
|/ | | | | | | | | | | | | | | | | | | The raw_spin* namespace was taken by lockdep for the architecture specific implementations. raw_spin_* would be the ideal name space for the spinlocks which are not converted to sleeping locks in preempt-rt. Linus suggested to convert the raw_ to arch_ locks and cleanup the name space instead of using an artifical name like core_spin, atomic_spin or whatever No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: linux-arch@vger.kernel.org
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds2009-12-09
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (137 commits) sh: include empty zero page in romImage sh: Make associative cache writes fatal on all SH-4A parts. sh: Drop associative writes for SH-4 cache flushes. sh: Partial revert of copy/clear_user_highpage() optimizations. sh: Add default uImage rule for se7724, ap325rxa, and migor. sh: allow runtime pm without suspend/resume callbacks sh: mach-ecovec24: Remove un-defined settings for VPU sh: mach-ecovec24: LCDC drive ability become high sh: fix sh7724 VEU3F resource size serial: sh-sci: Fix too early port disabling. sh: pfc: pr_info() -> pr_debug() cleanups. sh: pfc: Convert from ctrl_xxx() to __raw_xxx() I/O routines. sh: Improve kfr2r09 serial port setup code sh: Break out SuperH PFC code sh: Move KEYSC header file sh: convert /proc/cpu/aligmnent, /proc/cpu/kernel_alignment to seq_file sh: Add CPG save/restore code for sh7724 R-standby sh: Add SDHI power control support to Ecovec mfd: Add power control platform data to SDHI driver sh: mach-ecovec24: modify address map ...
| * sh: Break out SuperH PFC codeMagnus Damm2009-11-29
| | | | | | | | | | | | | | | | | | | | | | | | | | This file breaks out the SuperH PFC code from arch/sh/kernel/gpio.c + arch/sh/include/asm/gpio.h to drivers/sh/pfc.c + include/linux/sh_pfc.h. Similar to the INTC stuff. The non-SuperH specific file location makes it possible to share the code between multiple architectures. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Move KEYSC header fileMagnus Damm2009-11-29
| | | | | | | | | | | | | | | | | | This patch moves the KEYSC header file from the SuperH specific asm directory to a place where it can be shared by multiple architectures. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Fix up the FPU emulation build.Paul Mundt2009-11-24
| | | | | | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Minor optimisations to FPU handlingStuart Menefy2009-11-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A number of small optimisations to FPU handling, in particular: - move the task USEDFPU flag from the thread_info flags field (which is accessed asynchronously to the thread) to a new status field, which is only accessed by the thread itself. This allows locking to be removed in most cases, or can be reduced to a preempt_lock(). This mimics the i386 behaviour. - move the modification of regs->sr and thread_info->status flags out of save_fpu() to __unlazy_fpu(). This gives the compiler a better chance to optimise things, as well as making save_fpu() symmetrical with restore_fpu() and init_fpu(). - implement prepare_to_copy(), so that when creating a thread, we can unlazy the FPU prior to copying the thread data structures. Also make sure that the FPU is disabled while in the kernel, in particular while booting, and for newly created kernel threads, In a very artificial benchmark, the execution time for 2500000 context switches was reduced from 50 to 45 seconds. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Improve performance of SH4 versions of copy/clear_user_highpageStuart Menefy2009-11-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The previous implementation of clear_user_highpage and copy_user_highpage checked to see if there was a D-cache aliasing issue between the user and kernel mappings of a page, but if there was they always did a flush with writeback on the dirtied kernel alias. However as we now have the ability to map a page into kernel space with the same cache colour as the user mapping, there is no need to write back this data. Currently we also invalidate the kernel alias as a precaution, however I'm not sure if this is actually required. Also correct the definition of FIX_CMAP_END so that the mappings created by kmap_coherent() are actually at the correct colour. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * Merge branch 'master' into sh/st-integrationPaul Mundt2009-11-24
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| | * sh64: Fix up the CONFIG_GENERIC_BUG=n build.Paul Mundt2009-11-12
| | | | | | | | | | | | | | | | | | | | | sh64 doesn't use GENERIC_BUG, which presently causes the handle_BUG() code to blow up. Fix up the dependencies and get it all building again. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * sh: Use the generic I/O port base for slowdown.Paul Mundt2009-11-12
| | | | | | | | | | | | | | | | | | | | | | | | This fixes up the build and behaviour for various configurations. Namely the CONFIG_32BIT cases where legacy mappings do not exist, as well as the sh64 build. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * Merge branch 'sh/stable-updates'Paul Mundt2009-11-08
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| | * | sh: Add R-standby sleep mode supportMagnus Damm2009-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add R-standby specific bits to the SuperH Mobile sleep code. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: Add MMU and Cache handling sleep mode codeMagnus Damm2009-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add MMU and cache handling functionality to the SuperH Mobile sleep code. The MMU and cache registers are saved and restored. The MMU is disabled and the cache is flushed and disabled before entering sleep modes if the SUSP_SH_MMU flag is set. This flag should be set in the case of R-standby and most likely for future U-standby support as well. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: Keep track of allowed sleep modesMagnus Damm2009-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add code to keep track of supported sleep modes. This to only export cpuidle modes that are backed by board support code. Also, do not allow suspend-to-ram if sdram board code is missing. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: Rework SuperH Mobile sleep mode codeMagnus Damm2009-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rework the SuperH Mobile sleep code from including board specific code to allowing each board to provide pre/post code snippets. These snippets should contain sdram management code to enter and leave self-refresh. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: Allow boards to register memory pre/post sleep codeMagnus Damm2009-10-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add code to allow boards registering self-contained functions for going to/from self-refresh. At this point the board code is unused. When all supported boards have been converted then the new sleep code will make use of these functions. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: Add notifiers chains for cpu/board codeMagnus Damm2009-10-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds atomic notifier chains for pre/post sleep events. Useful for cpu code and boards that need to save and restore register state before and after entering a sleep mode. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: perf events: Add preliminary support for SH-4A counters.Paul Mundt2009-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds in preliminary support for the SH-4A performance counters. Presently only the first 2 counters are supported, as these are the ones of the most interest to the perf tool and end users. Counter chaining is not presently handled, so these are simply implemented as 32-bit counters. This also establishes a perf event support framework for other hardware counters, which the existing SH-4 oprofile code will migrate over to as the SH-4A support evolves. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: Fix up dma_is_consistent().Paul Mundt2009-10-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes up the dma_is_consistent() definition for the various coherence options. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: Revamp PCI DMA coherence Kconfig bits.Paul Mundt2009-10-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Leaving this configurable caused more trouble than it was ever worth, so just make it explicit. Boards that are verified one way or the other can fix up their selects accordingly. We presently default to non-coherent for most platforms. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: fix watchdog timer for sh7780/sh7785Valentin R Sitsikov2009-10-26
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Valentin Sitdikov <valentin.sitdikov@siemens.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: Add dma-mapping support for dma_alloc/free_coherent() overrides.Paul Mundt2009-10-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This moves the current dma_alloc/free_coherent() calls to a generic variant and plugs them in for the nommu default. Other variants can override the defaults in the dma mapping ops directly. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: Convert to asm-generic/dma-mapping-common.hPaul Mundt2009-10-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This converts the old DMA mapping support to the new generic dma-mapping-common.h abstraction. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: Fix up smp_mb__xxx() memory barriers for SH-4A SMP.Paul Mundt2009-10-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the past these were simply wrapping to barrier() which was sufficient on SH SMP platforms predating SH-4A. Unfortunately due to ll/sc semantics an explicit synco is needed in these cases, which is sorted for us by just switching these over to smp_mb(). smp_mb() also has the benefit of being wrapped to barrier() in the UP and non-SH4A cases, so old behaviour is maintained for those parts. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: Convert to asm-generic/irqflags.h.Paul Mundt2009-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This simplifies the irqflags support by switching over to the asm-generic version. The necessary support functions are brought out-of-line for both SHcompact and SHmedia instruction sets. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: Kill off legacy UBC wakeup cruft.Paul Mundt2009-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This code was added for some ancient SH-4 solution engines with peculiar boot ROMs that did silly things to the UBC MSTP bits. None of these have been in the wild for years, and these days the clock framework wraps up the MSTP bits, meaning that the UBC code is one of the few interfaces that is stomping MSTP bits underneath the clock framework. At this point the risks far outweigh any benefit this code provided, so just kill it off. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: Support SCHED_MC for SH-X3 multi-cores.Paul Mundt2009-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This enables SCHED_MC support for SH-X3 multi-cores. Presently this is just a simple wrapper around the possible map, but this allows for tying in support for some of the more exotic NUMA clusters where we can actually do something with the topology. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: Idle loop chainsawing for SMP-based light sleep.Paul Mundt2009-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This does a bit of chainsawing of the idle loop code to get light sleep working on SMP. Previously this was forcing secondary CPUs in to sleep mode with them not coming back if they didn't have their own local timers. Given that we use clockevents broadcasting by default, the CPU managing the clockevents can't have IRQs disabled before entering its sleep state. This unfortunately leaves us with the age-old need_resched() race in between local_irq_enable() and cpu_sleep(), but at present this is unavoidable. After some more experimentation it may be possible to layer on SR.BL bit manipulation over top of this scheme to inhibit the race condition, but given the current potential for missing wakeups, this is left as a future exercise. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: Count NMIs in irq_cpustat_t.Paul Mundt2009-10-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This plugs in support for NMI counting per-CPU via irq_cpustat_t. Modelled after the x86 implementation. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: TS_RESTORE_SIGMASK conversion.Paul Mundt2009-10-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace TIF_RESTORE_SIGMASK with TS_RESTORE_SIGMASK and define our own set_restore_sigmask() function. This saves the costly SMP-safe set_bit operation, which we do not need for the sigmask flag since TIF_SIGPENDING always has to be set too. Based on the x86 and powerpc change. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | sh: Provide CALLER_ADDRx definitions even when ftrace is disabled.Paul Mundt2009-10-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Despite being located in the ftrace header, the CALLER_ADDRx definitions are used by generic code. As such, we have to provide it generically, and given that there is no real dependence on ftrace in the first place, the definitions can just be moved out. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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