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gpu: nvgpu: pmu: check before initializing perfmon

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We should check if perfmon is enabled before sending
perfmon init command. This is needed for debug purposes.

Change-Id: Ia95a590a76074c469b5d87a5820cd5b2e50d13be
Signed-off-by: Deepak Goyal <dgoyal@nvidia.com>
Reviewed-on: https://git-master/r/1510036
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Deepak Goyal
2017-07-02 08:19:29 +05:30
committed by mobile promotions
parent 4166fc2f87
commit 75d7d6826d
8 changed files with 30 additions and 3 deletions
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7
drivers/gpu/nvgpu/common/linux/debug_pmu.c
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@@ -12,6 +12,7 @@
*
*/
#include <nvgpu/enabled.h>
#include "debug_pmu.h"
#include "gk20a/platform_gk20a.h"
@@ -348,10 +349,12 @@ static ssize_t perfmon_events_enable_write(struct file *file,
if (err)
return err;
if (val && !g->pmu.perfmon_sampling_enabled) {
if (val && !g->pmu.perfmon_sampling_enabled &&
nvgpu_is_enabled(g, NVGPU_PMU_PERFMON)) {
g->pmu.perfmon_sampling_enabled = true;
nvgpu_pmu_perfmon_start_sampling(&(g->pmu));
} else if (!val && g->pmu.perfmon_sampling_enabled) {
} else if (!val && g->pmu.perfmon_sampling_enabled &&
nvgpu_is_enabled(g, NVGPU_PMU_PERFMON)) {
g->pmu.perfmon_sampling_enabled = false;
nvgpu_pmu_perfmon_stop_sampling(&(g->pmu));
}