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trace: Call tracing_reset_online_cpus before tracer->init()

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Impact: cleanup

To make it easy for ftrace plugin writers, as this was open coded in
the existing plugins

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Frédéric Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Arnaldo Carvalho de Melo
2009-02-05 18:02:00 -02:00
committed by Ingo Molnar
parent 51a763dd84
commit b6f11df26f
11 changed files with 25 additions and 47 deletions
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8
kernel/trace/trace.c
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@@ -2171,6 +2171,12 @@ tracing_set_trace_read(struct file *filp, char __user *ubuf,
return simple_read_from_buffer(ubuf, cnt, ppos, buf, r);
}
int tracer_init(struct tracer *t, struct trace_array *tr)
{
tracing_reset_online_cpus(tr);
return t->init(tr);
}
static int tracing_set_tracer(const char *buf)
{
struct trace_array *tr = &global_trace;
@@ -2195,7 +2201,7 @@ static int tracing_set_tracer(const char *buf)
current_trace = t;
if (t->init) {
ret = t->init(tr);
ret = tracer_init(t, tr);
if (ret)
goto out;
}