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perf_counter: Make pctrl() affect inherited counters too 

Paul noted that the new ptcrl() didn't work on child counters.

Reported-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
LKML-Reference: <20090525124600.203151469@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
hifive-unleashed-5.1
Peter Zijlstra 2009-05-25 14:45:26 +02:00 committed by Ingo Molnar
parent e527ea312f
commit 771d7cde14
1 changed files with 24 additions and 24 deletions
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48
kernel/perf_counter.c
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@ -1067,30 +1067,6 @@ static void perf_counter_cpu_sched_in(struct perf_cpu_context *cpuctx, int cpu)
__perf_counter_sched_in(ctx, cpuctx, cpu);
}
int perf_counter_task_enable(void)
{
struct perf_counter *counter;
mutex_lock(&current->perf_counter_mutex);
list_for_each_entry(counter, &current->perf_counter_list, owner_entry)
perf_counter_enable(counter);
mutex_unlock(&current->perf_counter_mutex);
return 0;
}
int perf_counter_task_disable(void)
{
struct perf_counter *counter;
mutex_lock(&current->perf_counter_mutex);
list_for_each_entry(counter, &current->perf_counter_list, owner_entry)
perf_counter_disable(counter);
mutex_unlock(&current->perf_counter_mutex);
return 0;
}
static void perf_log_period(struct perf_counter *counter, u64 period);
static void perf_adjust_freq(struct perf_counter_context *ctx)
@ -1505,6 +1481,30 @@ static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
return 0;
}
int perf_counter_task_enable(void)
{
struct perf_counter *counter;
mutex_lock(&current->perf_counter_mutex);
list_for_each_entry(counter, &current->perf_counter_list, owner_entry)
perf_counter_for_each_child(counter, perf_counter_enable);
mutex_unlock(&current->perf_counter_mutex);
return 0;
}
int perf_counter_task_disable(void)
{
struct perf_counter *counter;
mutex_lock(&current->perf_counter_mutex);
list_for_each_entry(counter, &current->perf_counter_list, owner_entry)
perf_counter_for_each_child(counter, perf_counter_disable);
mutex_unlock(&current->perf_counter_mutex);
return 0;
}
/*
* Callers need to ensure there can be no nesting of this function, otherwise
* the seqlock logic goes bad. We can not serialize this because the arch