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Commit 485527ba authored by Hendrik Brueckner's avatar Hendrik Brueckner Committed by Martin Schwidefsky
Browse files

s390/cpum_cf: make hw_perf_event_update() a void function 



The return code of hw_perf_event_update() is not evaluated by
its callers.  Hence, simplify the function by removing the
return code.

Reported-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarHendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 26f268ac

arch/s390/kernel/perf_cpum_cf.c

+2 −4
Original line number Diff line number Diff line
@@ -462,7 +462,7 @@ static int hw_perf_event_reset(struct perf_event *event) 
	return err;

}



static int hw_perf_event_update(struct perf_event *event)

static void hw_perf_event_update(struct perf_event *event)

{

	u64 prev, new, delta;

	int err;
@@ -471,14 +471,12 @@ static int hw_perf_event_update(struct perf_event *event) 
		prev = local64_read(&event->hw.prev_count);

		err = ecctr(event->hw.config, &new);

		if (err)

			goto out;

			return;

	} while (local64_cmpxchg(&event->hw.prev_count, prev, new) != prev);



	delta = (prev <= new) ? new - prev

			      : (-1ULL - prev) + new + 1;	 /* overflow */

	local64_add(delta, &event->count);

out:

	return err;

}



static void cpumf_pmu_read(struct perf_event *event)