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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-14 02:35:47 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-14 02:35:47 +0400 |
| commit | 560ae37178b12e3bd37626f7b1e0b29c503ea558 (patch) | |
| tree | 24105534940152466aa331fb76a9438c85e634b5 /arch/x86 | |
| parent | 4fa109b13042868de84bedc70ea9b8337b502cf9 (diff) | |
| parent | baf64b85445546a38b44052d71782dfe7531e350 (diff) | |
| download | linux-560ae37178b12e3bd37626f7b1e0b29c503ea558.tar.xz | |
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Thomas Gleixner:
- fix for do_div() abuse on x86
- locking fix in perf core
- a pile of (build) fixes and cleanups in perf tools
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits)
perf/x86: Fix incorrect use of do_div() in NMI warning
perf: Fix perf_lock_task_context() vs RCU
perf: Remove WARN_ON_ONCE() check in __perf_event_enable() for valid scenario
perf: Clone child context from parent context pmu
perf script: Fix broken include in Context.xs
perf tools: Fix -ldw/-lelf link test when static linking
perf tools: Revert regression in configuration of Python support
perf tools: Fix perf version generation
perf stat: Fix per-socket output bug for uncore events
perf symbols: Fix vdso list searching
perf evsel: Fix missing increment in sample parsing
perf tools: Update symbol_conf.nr_events when processing attribute events
perf tools: Fix new_term() missing free on error path
perf tools: Fix parse_events_terms() segfault on error path
perf evsel: Fix count parameter to read call in event_format__new
perf tools: fix a typo of a Power7 event name
perf tools: Fix -x/--exclude-other option for report command
perf evlist: Enhance perf_evlist__start_workload()
perf record: Remove -f/--force option
perf record: Remove -A/--append option
...
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/nmi.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c index 0920212e6159..ba77ebc2c353 100644 --- a/arch/x86/kernel/nmi.c +++ b/arch/x86/kernel/nmi.c @@ -111,7 +111,7 @@ static int __kprobes nmi_handle(unsigned int type, struct pt_regs *regs, bool b2 */ list_for_each_entry_rcu(a, &desc->head, list) { u64 before, delta, whole_msecs; - int decimal_msecs, thishandled; + int remainder_ns, decimal_msecs, thishandled; before = local_clock(); thishandled = a->handler(type, regs); @@ -123,8 +123,9 @@ static int __kprobes nmi_handle(unsigned int type, struct pt_regs *regs, bool b2 continue; nmi_longest_ns = delta; - whole_msecs = do_div(delta, (1000 * 1000)); - decimal_msecs = do_div(delta, 1000) % 1000; + whole_msecs = delta; + remainder_ns = do_div(whole_msecs, (1000 * 1000)); + decimal_msecs = remainder_ns / 1000; printk_ratelimited(KERN_INFO "INFO: NMI handler (%ps) took too long to run: " "%lld.%03d msecs\n", a->handler, whole_msecs, |