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Merge branch 'perfcounters-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

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* 'perfcounters-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf tools: Make 'make html' work
  perf annotate: Fix segmentation fault
  perf_counter: Fix the PARISC build
  perf_counter: Check task on counter read IPI
  perf: Rename perf-examples.txt to examples.txt
  perf record: Fix typo in pid_synthesize_comm_event
This commit is contained in:
Linus Torvalds
2009-08-19 09:43:19 -07:00
parent c124891f50 b395cd8a74
commit d46c7d9ab8
5 changed files with 24 additions and 2 deletions
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15
kernel/perf_counter.c
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@@ -1503,10 +1503,21 @@ static void perf_counter_enable_on_exec(struct task_struct *task)
*/
static void __perf_counter_read(void *info)
{
struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
struct perf_counter *counter = info;
struct perf_counter_context *ctx = counter->ctx;
unsigned long flags;
/*
* If this is a task context, we need to check whether it is
* the current task context of this cpu. If not it has been
* scheduled out before the smp call arrived. In that case
* counter->count would have been updated to a recent sample
* when the counter was scheduled out.
*/
if (ctx->task && cpuctx->task_ctx != ctx)
return;
local_irq_save(flags);
if (ctx->is_active)
update_context_time(ctx);
@@ -2008,6 +2019,10 @@ int perf_counter_task_disable(void)
return 0;
}
#ifndef PERF_COUNTER_INDEX_OFFSET
# define PERF_COUNTER_INDEX_OFFSET 0
#endif
static int perf_counter_index(struct perf_counter *counter)
{
if (counter->state != PERF_COUNTER_STATE_ACTIVE)