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2011-04-17alpha: Remove set but unused variables.Richard Henderson5-17/+13
This is a new warning in gcc 4.6. Several of these variables are used within #if 0 code, which probably ought to be removed. Most of the changes are legitimate cleanups. Signed-off-by: Richard Henderson <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-04-17alpha: Don't force -Werror.Richard Henderson1-1/+1
There are outstanding gcc 4.6 warnings that need to be cleaned up in the subdirectory. No sense forcing the issue immediately. Signed-off-by: Richard Henderson <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-04-14sched: Provide scheduler_ipi() callback in response to smp_send_reschedule()Peter Zijlstra1-2/+1
For future rework of try_to_wake_up() we'd like to push part of that function onto the CPU the task is actually going to run on. In order to do so we need a generic callback from the existing scheduler IPI. This patch introduces such a generic callback: scheduler_ipi() and implements it as a NOP. BenH notes: PowerPC might use this IPI on offline CPUs under rare conditions! Acked-by: Russell King <[email protected]> Acked-by: Martin Schwidefsky <[email protected]> Acked-by: Chris Metcalf <[email protected]> Acked-by: Jesper Nilsson <[email protected]> Acked-by: Benjamin Herrenschmidt <[email protected]> Signed-off-by: Ralf Baechle <[email protected]> Reviewed-by: Frank Rowand <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Nick Piggin <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Andrew Morton <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Signed-off-by: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected]
2011-03-31Fix common misspellingsLucas De Marchi2-3/+3
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <[email protected]>
2011-03-29alpha: Use generic show_interrupts()Thomas Gleixner1-57/+10
The only subtle difference is that alpha uses ACTUAL_NR_IRQS and prints the IRQF_DISABLED flag. Change the generic implementation to deal with ACTUAL_NR_IRQS if defined. The IRQF_DISABLED printing is pointless, as we nowadays run all interrupts with irqs disabled. Signed-off-by: Thomas Gleixner <[email protected]>
2011-03-29alpha: Convert to new irq function namesThomas Gleixner20-34/+38
Scripted with coccinelle. Signed-off-by: Thomas Gleixner <[email protected]>
2011-03-24percpu: Always align percpu output section to PAGE_SIZETejun Heo1-1/+1
Percpu allocator honors alignment request upto PAGE_SIZE and both the percpu addresses in the percpu address space and the translated kernel addresses should be aligned accordingly. The calculation of the former depends on the alignment of percpu output section in the kernel image. The linker script macros PERCPU_VADDR() and PERCPU() are used to define this output section and the latter takes @align parameter. Several architectures are using @align smaller than PAGE_SIZE breaking percpu memory alignment. This patch removes @align parameter from PERCPU(), renames it to PERCPU_SECTION() and makes it always align to PAGE_SIZE. While at it, add PCPU_SETUP_BUG_ON() checks such that alignment problems are reliably detected and remove percpu alignment comment recently added in workqueue.c as the condition would trigger BUG way before reaching there. For um, this patch raises the alignment of percpu area. As the area is in .init, there shouldn't be any noticeable difference. This problem was discovered by David Howells while debugging boot failure on mn10300. Signed-off-by: Tejun Heo <[email protected]> Acked-by: Mike Frysinger <[email protected]> Cc: [email protected] Cc: David Howells <[email protected]> Cc: Jeff Dike <[email protected]> Cc: [email protected]
2011-03-16Merge branch 'for-2.6.39' of ↵Linus Torvalds1-2/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu, x86: Add arch-specific this_cpu_cmpxchg_double() support percpu: Generic support for this_cpu_cmpxchg_double() alpha: use L1_CACHE_BYTES for cacheline size in the linker script percpu: align percpu readmostly subsection to cacheline Fix up trivial conflict in arch/x86/kernel/vmlinux.lds.S due to the percpu alignment having changed ("x86: Reduce back the alignment of the per-CPU data section")
2011-03-15Merge branch 'timers-core-for-linus' of ↵Linus Torvalds1-6/+2
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (62 commits) posix-clocks: Check write permissions in posix syscalls hrtimer: Remove empty hrtimer_init_hres_timer() hrtimer: Update hrtimer->state documentation hrtimer: Update base[CLOCK_BOOTTIME].offset correctly timers: Export CLOCK_BOOTTIME via the posix timers interface timers: Add CLOCK_BOOTTIME hrtimer base time: Extend get_xtime_and_monotonic_offset() to also return sleep time: Introduce get_monotonic_boottime and ktime_get_boottime hrtimers: extend hrtimer base code to handle more then 2 clockids ntp: Remove redundant and incorrect parameter check mn10300: Switch do_timer() to xtimer_update() posix clocks: Introduce dynamic clocks posix-timers: Cleanup namespace posix-timers: Add support for fd based clocks x86: Add clock_adjtime for x86 posix-timers: Introduce a syscall for clock tuning. time: Splitout compat timex accessors ntp: Add ADJ_SETOFFSET mode bit time: Introduce timekeeping_inject_offset posix-timer: Update comment ... Fix up new system-call-related conflicts in arch/x86/ia32/ia32entry.S arch/x86/include/asm/unistd_32.h arch/x86/include/asm/unistd_64.h arch/x86/kernel/syscall_table_32.S (name_to_handle_at()/open_by_handle_at() vs clock_adjtime()), and some due to movement of get_jiffies_64() in: kernel/time.c
2011-03-14clean statfs-like syscalls upAl Viro1-28/+8
New helpers: user_statfs() and fd_statfs(), taking userland pathname and descriptor resp. and filling struct kstatfs. Syscalls of statfs family (native, compat and foreign - osf and hpux on alpha and parisc resp.) switched to those. Removes some boilerplate code, simplifies cleanup on errors... Signed-off-by: Al Viro <[email protected]>
2011-03-09alpha: fix compile error from IRQ clean upMatt Turner1-0/+1
Signed-off-by: Matt Turner <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-03-02alpha: irq: Convert affinity to use irq_dataThomas Gleixner1-4/+9
affinity is moving to irq_data. Fix it up. Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-03-02alpha: irq: Remove pointless irq status manipulationThomas Gleixner1-8/+3
The irq descriptors are initialized IRQ_DISABLED in the generic code. No need to fiddle with them. Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-03-02alpha: titan: Convert irq_chip functionsThomas Gleixner1-9/+12
Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-03-02alpha: takara: Convert irq_chip functionsThomas Gleixner1-6/+8
Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-03-02alpha: sable: Convert irq_chip functionsThomas Gleixner1-10/+10
Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-03-02alpha: rx164: Convert irq_chip functionsThomas Gleixner1-8/+8
Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-03-02alpha: noritake: Convert irq_chip functionsThomas Gleixner1-8/+8
Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-03-02alpha: rawhide: Convert irq_chip functionsThomas Gleixner1-7/+10
Signed-off-by: Matt Turner <[email protected]>
2011-03-02alpha: mikasa: Convert irq_chip functionsThomas Gleixner1-8/+8
Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-03-02alpha: marvel: Convert irq_chip functionsThomas Gleixner1-23/+19
Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-03-02alpha: eiger: Convert irq_chip functionsThomas Gleixner1-6/+8
Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-03-02alpha: eb64p: Convert irq_chip functionsThomas Gleixner1-9/+9
Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-03-02alpha: dp264: Convert irq_chip functionsThomas Gleixner1-25/+27
Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-03-02alpha: cabriolet: Convert irq_chip functionsThomas Gleixner1-8/+8
Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-03-02alpha: i8259, alcor, jensen wildfire: Convert irq_chipThomas Gleixner5-52/+58
Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-03-02alpha: srm: Convert irq_chip functionsThomas Gleixner1-8/+8
Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-03-02alpha: Pyxis convert irq_chip functionsThomas Gleixner1-10/+10
Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-03-02Fix typo in call to irq_to_desc()Morten Holst Larsen1-1/+1
Fix typo in call to irq_to_desc() Signed-off-by: Morten H. Larsen <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-01-31alpha: Change do_timer() to xtime_update()Torben Hohn1-6/+2
xtime_update() takes the xtime_lock itself. timer_interrupt() is only called on the boot cpu. See do_entInt(). So "state" in timer_interrupt does not require protection by xtime_lock. Signed-off-by: Torben Hohn <[email protected]> Cc: Richard Henderson <[email protected]> Cc: Ivan Kokshaysky <[email protected]> Cc: Matt Turner <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] LKML-Reference: <20110127145915.23248.20919.stgit@localhost> Signed-off-by: Thomas Gleixner <[email protected]>
2011-01-25alpha: use L1_CACHE_BYTES for cacheline size in the linker scriptTejun Heo1-2/+3
Currently the linker script uses 64 for cacheline size which isn't optimal for all cases. Include asm/cache.h and use L1_CACHE_BYTES instead as suggested by Sam Ravnborg. Signed-off-by: Tejun Heo <[email protected]> Cc: Sam Ravnborg <[email protected]>
2011-01-25percpu: align percpu readmostly subsection to cachelineTejun Heo1-1/+1
Currently percpu readmostly subsection may share cachelines with other percpu subsections which may result in unnecessary cacheline bounce and performance degradation. This patch adds @cacheline parameter to PERCPU() and PERCPU_VADDR() linker macros, makes each arch linker scripts specify its cacheline size and use it to align percpu subsections. This is based on Shaohua's x86 only patch. Signed-off-by: Tejun Heo <[email protected]> Cc: Shaohua Li <[email protected]>
2011-01-17alpha: fix WARN_ON in __local_bh_enable()Ivan Kokshaysky1-3/+2
Interrupts ought to be disabled _before_ irq_enter(). Signed-off-by: Ivan Kokshaysky <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-01-17alpha/osf_sys: remove unused MAX_SELECT_SECONDSNamhyung Kim1-3/+0
Remove the leftover from the commit 14e2acd86865 ("select: fix alpha OSF wrapper"). Signed-off-by: Namhyung Kim <[email protected]> Cc: Arjan van de Ven <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-01-17alpha: change to new Makefile flag variablesmatt mooney1-2/+2
Signed-off-by: matt mooney <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-01-17alpha: kill off alpha_do_IRQKyle McMartin20-457/+94
Good riddance... Nuke a pile of redundant handlers that the generic code takes care of as well. Tested-by: Michael Cree <[email protected]> Signed-off-by: Kyle McMartin <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-01-17alpha: irq clean upKyle McMartin20-58/+67
Stop touching irq_desc[irq] directly, instead use accessor functions provided. Use irq_has_action instead of directly testing the irq_desc. Tested-by: Michael Cree <[email protected]> Signed-off-by: Kyle McMartin <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-01-17alpha: use set_irq_chip and push down __do_IRQ to the machine typesKyle McMartin19-48/+56
Also kill superfluous IRQ_DISABLED initialization, since that's the default state of the irq_desc[i].status field. Tested-by: Michael Cree <[email protected]> Signed-off-by: Kyle McMartin <[email protected]> Signed-off-by: Matt Turner <[email protected]>
2011-01-13set_rtc_mmss: show warning message only onceStephen Hemminger1-1/+1
Occasionally the system gets into a state where the CMOS clock has gotten slightly ahead of current time and the periodic update of RTC fails. The message is a nuisance and repeats spamming the log. See: http://www.ntp.org/ntpfaq/NTP-s-trbl-spec.htm#Q-LINUX-SET-RTC-MMSS Rather than just removing the message, make it show only once and reduce severity since it indicates a normal and non urgent condition. Signed-off-by: Stephen Hemminger <[email protected]> Cc: Richard Henderson <[email protected]> Cc: Ivan Kokshaysky <[email protected]> Cc: Matt Turner <[email protected]> Cc: Ralf Baechle <[email protected]> Cc: David Howells <[email protected]> Cc: Paul Mundt <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: Thomas Gleixner <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2010-12-16perf: Dynamic pmu typesPeter Zijlstra1-1/+1
Extend the perf_pmu_register() interface to allow for named and dynamic pmu types. Because we need to support the existing static types we cannot use dynamic types for everything, hence provide a type argument. If we want to enumerate the PMUs they need a name, provide one. Signed-off-by: Peter Zijlstra <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2010-11-26perf, arch: Cleanup perf-pmu init vs lockup-detectorPeter Zijlstra2-5/+6
The perf hardware pmu got initialized at various points in the boot, some before early_initcall() some after (notably arch_initcall). The problem is that the NMI lockup detector is ran from early_initcall() and expects the hardware pmu to be present. Sanitize this by moving all architecture hardware pmu implementations to initialize at early_initcall() and move the lockup detector to an explicit initcall right after that. Cc: paulus <[email protected]> Cc: davem <[email protected]> Cc: Michael Cree <[email protected]> Cc: Deng-Cheng Zhu <[email protected]> Acked-by: Paul Mundt <[email protected]> Acked-by: Will Deacon <[email protected]> Signed-off-by: Peter Zijlstra <[email protected]> LKML-Reference: <1290707759.2145.119.camel@laptop> Signed-off-by: Ingo Molnar <[email protected]>
2010-10-27alpha: remove dma64_addr_t usageFUJITA Tomonori1-2/+2
dma_addr_t is always 64 bit on alpha. So let's use dma_addr_t instead. Signed-off-by: FUJITA Tomonori <[email protected]> Cc: Richard Henderson <[email protected]> Cc: Ivan Kokshaysky <[email protected]> Cc: Matt Turner <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2010-10-27ptrace: change signature of arch_ptrace()Namhyung Kim1-3/+4
Fix up the arguments to arch_ptrace() to take account of the fact that @addr and @data are now unsigned long rather than long as of a preceding patch in this series. Signed-off-by: Namhyung Kim <[email protected]> Cc: <[email protected]> Acked-by: Roland McGrath <[email protected]> Acked-by: David Howells <[email protected]> Acked-by: Geert Uytterhoeven <[email protected]> Acked-by: David S. Miller <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2010-10-26alpha: use single HAE window on T2 core logic (gamma, sable)Ivan Kokshaysky2-3/+11
T2 are the only alpha SMP systems that do HAE switching at runtime, which is fundamentally racy on SMP. This patch limits MMIO space on T2 to HAE0 only, like we did on MCPCIA (rawhide) long ago. This leaves us with only 112 Mb of PCI MMIO (128 Mb HAE aperture minus 16 Mb reserved for EISA), but since linux PCI allocations are reasonably tight, it should be enough for sane hardware configurations. Also, fix a typo in MCPCIA_FROB_MMIO macro which shouldn't call set_hae() if MCPCIA_ONE_HAE_WINDOW is defined. It's more for correctness, as set_hae() is a no-op anyway in that case. Signed-off-by: Ivan Kokshaysky <[email protected]> Cc: Matt Turner <[email protected]> Cc: Richard Henderson <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2010-10-18irq_work: Add generic hardirq context callbacksPeter Zijlstra1-15/+15
Provide a mechanism that allows running code in IRQ context. It is most useful for NMI code that needs to interact with the rest of the system -- like wakeup a task to drain buffers. Perf currently has such a mechanism, so extract that and provide it as a generic feature, independent of perf so that others may also benefit. The IRQ context callback is generated through self-IPIs where possible, or on architectures like powerpc the decrementer (the built-in timer facility) is set to generate an interrupt immediately. Architectures that don't have anything like this get to do with a callback from the timer tick. These architectures can call irq_work_run() at the tail of any IRQ handlers that might enqueue such work (like the perf IRQ handler) to avoid undue latencies in processing the work. Signed-off-by: Peter Zijlstra <[email protected]> Acked-by: Kyle McMartin <[email protected]> Acked-by: Martin Schwidefsky <[email protected]> [ various fixes ] Signed-off-by: Huang Ying <[email protected]> LKML-Reference: <1287036094.7768.291.camel@yhuang-dev> Signed-off-by: Ingo Molnar <[email protected]>
2010-10-08Merge commit 'v2.6.36-rc7' into perf/coreIngo Molnar4-56/+24
Conflicts: arch/x86/kernel/module.c Merge reason: Resolve the conflict, pick up fixes. Signed-off-by: Ingo Molnar <[email protected]>
2010-09-30Fix up more fallout form alpha signal cleanupsLinus Torvalds1-1/+1
Commit c52c2ddc1dfa ("alpha: switch osf_sigprocmask() to use of sigprocmask()") had several problems. The more obvious compile issues got fixed in commit 0f44fbd297e1 ("alpha: fix compile problem in arch/alpha/kernel/signal.c"), but it also caused a regression. Since _BLOCKABLE is already the set of signals that can be blocked, the code should do "newmask & _BLOCKABLE" rather than inverting _BLOCKABLE before masking. Reported-by: Michael Cree <[email protected]> Patch-by: Al Viro <[email protected]> Patch-by: Ivan Kokshaysky <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2010-09-28alpha: fix compile problem in arch/alpha/kernel/signal.cLinus Torvalds1-2/+2
Tssk. Apparently Al hadn't checked commit c52c2ddc1dfa ("alpha: switch osf_sigprocmask() to use of sigprocmask()") at all. It doesn't compile. Fixed as per suggestions from Michael Cree. Reported-by: Michael Cree <[email protected]> Cc: Al Viro <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2010-09-27alpha: __get_user/__put_user results need to be checked...Al Viro1-4/+4
Signed-off-by: Al Viro <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2010-09-27alpha: switch osf_sigprocmask() to use of sigprocmask()Al Viro3-47/+12
get rid of a useless wrapper, while we are at it Signed-off-by: Al Viro <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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