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author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-18 10:38:34 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-18 10:38:34 -0700 |
commit | 619297855aa16646246ea4b1f6e05f1b2455c808 (patch) | |
tree | a07fe1b24c372f5eabf244555db41fdf574c1205 /kernel | |
parent | e16b396ce314b2bcdfe6c173fe075bf8e3432368 (diff) | |
parent | 1ef1d1c2353967e2d61ecaddf76edfd058a778b4 (diff) | |
download | linux-619297855aa16646246ea4b1f6e05f1b2455c808.tar.bz2 |
Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (30 commits)
trace, filters: Initialize the match variable in process_ops() properly
trace, documentation: Fix branch profiling location in debugfs
oprofile, s390: Cleanups
oprofile, s390: Remove hwsampler_files.c and merge it into init.c
perf: Fix tear-down of inherited group events
perf: Reorder & optimize perf_event_context to remove alignment padding on 64 bit builds
perf: Handle stopped state with tracepoints
perf: Fix the software events state check
perf, powerpc: Handle events that raise an exception without overflowing
perf, x86: Use INTEL_*_CONSTRAINT() for all PEBS event constraints
perf, x86: Clean up SandyBridge PEBS events
perf lock: Fix sorting by wait_min
perf tools: Version incorrect with some versions of grep
perf evlist: New command to list the names of events present in a perf.data file
perf script: Add support for H/W and S/W events
perf script: Add support for dumping symbols
perf script: Support custom field selection for output
perf script: Move printing of 'common' data from print_event and rename
perf tracing: Remove print_graph_cpu and print_graph_proc from trace-event-parse
perf script: Change process_event prototype
...
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/perf_event.c | 17 | ||||
-rw-r--r-- | kernel/trace/Kconfig | 4 | ||||
-rw-r--r-- | kernel/trace/trace_events_filter.c | 2 |
3 files changed, 14 insertions, 9 deletions
diff --git a/kernel/perf_event.c b/kernel/perf_event.c index ed253aa24ba4..3472bb1a070c 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -5122,7 +5122,7 @@ static int perf_exclude_event(struct perf_event *event, struct pt_regs *regs) { if (event->hw.state & PERF_HES_STOPPED) - return 0; + return 1; if (regs) { if (event->attr.exclude_user && user_mode(regs)) @@ -5478,6 +5478,8 @@ static int perf_tp_event_match(struct perf_event *event, struct perf_sample_data *data, struct pt_regs *regs) { + if (event->hw.state & PERF_HES_STOPPED) + return 0; /* * All tracepoints are from kernel-space. */ @@ -6720,17 +6722,20 @@ __perf_event_exit_task(struct perf_event *child_event, struct perf_event_context *child_ctx, struct task_struct *child) { - struct perf_event *parent_event; + if (child_event->parent) { + raw_spin_lock_irq(&child_ctx->lock); + perf_group_detach(child_event); + raw_spin_unlock_irq(&child_ctx->lock); + } perf_remove_from_context(child_event); - parent_event = child_event->parent; /* - * It can happen that parent exits first, and has events + * It can happen that the parent exits first, and has events * that are still around due to the child reference. These - * events need to be zapped - but otherwise linger. + * events need to be zapped. */ - if (parent_event) { + if (child_event->parent) { sync_child_event(child_event, child); free_event(child_event); } diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 14674dce77a6..61d7d59f4a1a 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -275,7 +275,7 @@ config PROFILE_ANNOTATED_BRANCHES This tracer profiles all the the likely and unlikely macros in the kernel. It will display the results in: - /sys/kernel/debug/tracing/profile_annotated_branch + /sys/kernel/debug/tracing/trace_stat/branch_annotated Note: this will add a significant overhead; only turn this on if you need to profile the system's use of these macros. @@ -288,7 +288,7 @@ config PROFILE_ALL_BRANCHES taken in the kernel is recorded whether it hit or miss. The results will be displayed in: - /sys/kernel/debug/tracing/profile_branch + /sys/kernel/debug/tracing/trace_stat/branch_all This option also enables the likely/unlikely profiler. diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index 3249b4f77ef0..8008ddcfbf20 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -391,8 +391,8 @@ static int process_ops(struct filter_pred *preds, struct filter_pred *op, void *rec) { struct filter_pred *pred; + int match = 0; int type; - int match; int i; /* |