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gpu: nvgpu: Add a generic profiler

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Add a generic profiler based on the channel kickoff profiler. This
aims to provide a mechanism to allow engineers to (more) easily profile
arbitrary software paths within nvgpu.

Usage of this profiler is still primarily through debugfs. Next up is
a generic debugfs interface for this profiler in the Linux code.

The end goal for this is to profile the recovery code and generate
interesting statistics.

JIRA NVGPU-5606

Signed-off-by: Alex Waterman <alexw@nvidia.com>
Change-Id: I99783ec7e5143855845bde4e98760ff43350456d
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2355319
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Alex Waterman
2020-06-01 19:56:37 -05:00
parent 59eb714c48
commit 70ce67df2d
18 changed files with 579 additions and 292 deletions
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9
drivers/gpu/nvgpu/common/fifo/fifo.c
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@@ -35,6 +35,12 @@
#include <nvgpu/vm_area.h>
#include <nvgpu/nvgpu_err.h>
#include <nvgpu/mc.h>
#include <nvgpu/swprofile.h>
#include <nvgpu/fifo/swprofile.h>
static const char *nvgpu_fifo_kickoff_profile_events[] = {
NVGPU_FIFO_KICKOFF_PROFILE_EVENTS,
};
void nvgpu_fifo_cleanup_sw_common(struct gk20a *g)
{
@@ -93,6 +99,9 @@ int nvgpu_fifo_setup_sw_common(struct gk20a *g)
nvgpu_mutex_init(&f->deferred_reset_mutex);
#endif
nvgpu_swprofile_initialize(g, &f->kickoff_profiler,
nvgpu_fifo_kickoff_profile_events);
err = nvgpu_channel_setup_sw(g);
if (err != 0) {
nvgpu_err(g, "failed to init channel support");