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gpu: nvgpu: gk20a: Update perfmon init

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Make the perfmon sampling configurable, by adding an 'enabled' flag.
This is set according to the CONFIG initially. Modify the perfmon event
handler to not touch clock rates. Add a counter to count the number of
perfmon events.

Also add debugfs entries for the above.

Bug 1410515

Change-Id: Ic8197eef0e46e35af1179a5b06140393541cfd43
Signed-off-by: Prashant Malani <pmalani@nvidia.com>
Reviewed-on: http://git-master/r/351564
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Prashant Malani
2014-01-02 12:47:14 -08:00
committed by Dan Willemsen
parent 4c7065b558
commit 6157db5d51
2 changed files with 107 additions and 24 deletions
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4
drivers/gpu/nvgpu/gk20a/pmu_gk20a.h
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@@ -1049,6 +1049,8 @@ struct pmu_gk20a {
struct pmu_cmdline_args_v0 args_v0;
struct pmu_cmdline_args_v1 args_v1;
};
unsigned long perfmon_events_cnt;
bool perfmon_sampling_enabled;
};
struct gk20a_pmu_save_state {
@@ -1064,6 +1066,8 @@ struct gk20a_pmu_save_state {
wait_queue_head_t pg_wq;
bool sw_ready;
struct work_struct pg_init;
unsigned long perfmon_events_cnt;
bool perfmon_sampling_enabled;
};
int gk20a_init_pmu_support(struct gk20a *g);