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gpu: nvgpu: abstract submit profiling

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Add gk20a_fifo_profile_snapshot() to store the submit time in a
profiling entry that was acquired from gk20a_fifo_profile_acquire().
Also get rid of ifdef CONFIG_DEBUG_FS by stubbing the acquire and free
functions when debugfs is not enabled. This reduces some cyclomatic
complexity in the submit path.

Jira NVGPU-708

Change-Id: I39829a6475cfe3aa582620219e420bde62228e52
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1729545
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Konsta Holtta
2018-05-22 12:59:02 +03:00
committed by mobile promotions
parent 45d0a9c711
commit cae514120b
4 changed files with 32 additions and 18 deletions
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14
drivers/gpu/nvgpu/common/linux/channel.c
View File

@@ -19,7 +19,6 @@
#include <nvgpu/ltc.h>
#include <nvgpu/error_notifier.h>
#include <nvgpu/os_sched.h>
#include <nvgpu/timers.h>
/*
* This is required for nvgpu_vm_find_buf() which is used in the tracing
@@ -812,8 +811,7 @@ int gk20a_submit_channel_gpfifo(struct channel_gk20a *c,
return -EINVAL;
}
if (profile)
profile->timestamp[PROFILE_ENTRY] = nvgpu_current_time_ns();
gk20a_fifo_profile_snapshot(profile, PROFILE_ENTRY);
/* update debug settings */
nvgpu_ltc_sync_enabled(g);
@@ -961,8 +959,7 @@ int gk20a_submit_channel_gpfifo(struct channel_gk20a *c,
goto clean_up_job;
}
if (profile)
profile->timestamp[PROFILE_JOB_TRACKING] = nvgpu_current_time_ns();
gk20a_fifo_profile_snapshot(profile, PROFILE_JOB_TRACKING);
if (wait_cmd)
gk20a_submit_append_priv_cmdbuf(c, wait_cmd);
@@ -986,8 +983,7 @@ int gk20a_submit_channel_gpfifo(struct channel_gk20a *c,
if (need_job_tracking)
/* TODO! Check for errors... */
gk20a_channel_add_job(c, job, skip_buffer_refcounting);
if (profile)
profile->timestamp[PROFILE_APPEND] = nvgpu_current_time_ns();
gk20a_fifo_profile_snapshot(profile, PROFILE_APPEND);
g->ops.fifo.userd_gp_put(g, c);
@@ -1005,8 +1001,8 @@ int gk20a_submit_channel_gpfifo(struct channel_gk20a *c,
nvgpu_log_info(g, "post-submit put %d, get %d, size %d",
c->gpfifo.put, c->gpfifo.get, c->gpfifo.entry_num);
if (profile)
profile->timestamp[PROFILE_END] = nvgpu_current_time_ns();
gk20a_fifo_profile_snapshot(profile, PROFILE_END);
nvgpu_log_fn(g, "done");
return err;

7
drivers/gpu/nvgpu/common/linux/debug_fifo.c
View File

@@ -19,6 +19,7 @@
#include <linux/seq_file.h>
#include <nvgpu/sort.h>
#include <nvgpu/timers.h>
void __gk20a_fifo_profile_free(struct nvgpu_ref *ref);
@@ -325,6 +326,12 @@ void gk20a_fifo_debugfs_init(struct gk20a *g)
}
void gk20a_fifo_profile_snapshot(struct fifo_profile_gk20a *profile, int idx)
{
if (profile)
profile->timestamp[idx] = nvgpu_current_time_ns();
}
void __gk20a_fifo_profile_free(struct nvgpu_ref *ref)
{
struct fifo_gk20a *f = container_of(ref, struct fifo_gk20a,

14
drivers/gpu/nvgpu/common/linux/ioctl_channel.c
View File

@@ -780,12 +780,9 @@ static int gk20a_ioctl_channel_submit_gpfifo(
int ret = 0;
nvgpu_log_fn(g, " ");
#ifdef CONFIG_DEBUG_FS
profile = gk20a_fifo_profile_acquire(ch->g);
gk20a_fifo_profile_snapshot(profile, PROFILE_IOCTL_ENTRY);
if (profile)
profile->timestamp[PROFILE_IOCTL_ENTRY] = nvgpu_current_time_ns();
#endif
if (ch->has_timedout)
return -ETIMEDOUT;
@@ -825,12 +822,11 @@ static int gk20a_ioctl_channel_submit_gpfifo(
}
}
gk20a_fence_put(fence_out);
#ifdef CONFIG_DEBUG_FS
if (profile) {
profile->timestamp[PROFILE_IOCTL_EXIT] = nvgpu_current_time_ns();
gk20a_fifo_profile_snapshot(profile, PROFILE_IOCTL_EXIT);
if (profile)
gk20a_fifo_profile_release(ch->g, profile);
}
#endif
clean_up:
return ret;
}

15
drivers/gpu/nvgpu/gk20a/fifo_gk20a.h
View File

@@ -349,6 +349,21 @@ bool gk20a_is_fault_engine_subid_gpc(struct gk20a *g, u32 engine_subid);
struct fifo_profile_gk20a *gk20a_fifo_profile_acquire(struct gk20a *g);
void gk20a_fifo_profile_release(struct gk20a *g,
struct fifo_profile_gk20a *profile);
void gk20a_fifo_profile_snapshot(struct fifo_profile_gk20a *profile, int idx);
#else
static inline struct fifo_profile_gk20a *
gk20a_fifo_profile_acquire(struct gk20a *g)
{
return NULL;
}
static inline void gk20a_fifo_profile_release(struct gk20a *g,
struct fifo_profile_gk20a *profile)
{
}
static inline void gk20a_fifo_profile_snapshot(
struct fifo_profile_gk20a *profile, int idx)
{
}
#endif
void gk20a_dump_channel_status_ramfc(struct gk20a *g,