提交 b39f88ac 编写于 作者: P Peter Zijlstra 提交者: Ingo Molnar

perf, x86: Extract PEBS/BTS buffer free routines

So that we may grow additional call-sites..
Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: NStephane Eranian <eranian@google.com>
LKML-Reference: <20101019134808.196793164@chello.nl>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
上级 d4429f60
......@@ -74,6 +74,28 @@ static void fini_debug_store_on_cpu(int cpu)
wrmsr_on_cpu(cpu, MSR_IA32_DS_AREA, 0, 0);
}
static void release_pebs_buffer(int cpu)
{
struct debug_store *ds = per_cpu(cpu_hw_events, cpu).ds;
if (!ds || !x86_pmu.pebs)
return;
kfree((void *)(unsigned long)ds->pebs_buffer_base);
ds->pebs_buffer_base = 0;
}
static void release_bts_buffer(int cpu)
{
struct debug_store *ds = per_cpu(cpu_hw_events, cpu).ds;
if (!ds || !x86_pmu.bts)
return;
kfree((void *)(unsigned long)ds->bts_buffer_base);
ds->bts_buffer_base = 0;
}
static void release_ds_buffers(void)
{
int cpu;
......@@ -82,7 +104,6 @@ static void release_ds_buffers(void)
return;
get_online_cpus();
for_each_online_cpu(cpu)
fini_debug_store_on_cpu(cpu);
......@@ -92,13 +113,12 @@ static void release_ds_buffers(void)
if (!ds)
continue;
per_cpu(cpu_hw_events, cpu).ds = NULL;
release_pebs_buffer(cpu);
release_bts_buffer(cpu);
kfree((void *)(unsigned long)ds->pebs_buffer_base);
kfree((void *)(unsigned long)ds->bts_buffer_base);
per_cpu(cpu_hw_events, cpu).ds = NULL;
kfree(ds);
}
put_online_cpus();
}
......
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