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gpu: nvgpu: add periodic timer API

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move fecs_trace polling from kthread to timer API.

Jira GVSCI-10883

Signed-off-by: Richard Zhao <rizhao@nvidia.com>
Change-Id: I224754b7205f1d0eefdc19a73a98f42e4d3e9d0e
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2700601
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Shashank Singh <shashsingh@nvidia.com>
Reviewed-by: Aparna Das <aparnad@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Richard Zhao
2022-04-20 11:05:43 -07:00
committed by mobile promotions
parent 61ae0b7642
commit c30afdce02
13 changed files with 410 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
drivers/gpu/nvgpu/common/gr/fecs_trace.c
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@@ -35,7 +35,7 @@
#include <nvgpu/gr/fecs_trace.h>
#include <nvgpu/gr/gr_utils.h>
static int nvgpu_gr_fecs_trace_periodic_polling(void *arg);
static void nvgpu_gr_fecs_trace_periodic_polling(void *arg);
int nvgpu_gr_fecs_trace_add_context(struct gk20a *g, u32 context_ptr,
pid_t pid, u32 vmid, struct nvgpu_list_node *list)
@@ -134,6 +134,7 @@ void nvgpu_gr_fecs_trace_find_pid(struct gk20a *g, u32 context_ptr,
int nvgpu_gr_fecs_trace_init(struct gk20a *g)
{
struct nvgpu_gr_fecs_trace *trace;
int err;
if (!is_power_of_2((u32)GK20A_FECS_TRACE_NUM_RECORDS)) {
nvgpu_err(g, "invalid NUM_RECORDS chosen");
@@ -157,7 +158,13 @@ int nvgpu_gr_fecs_trace_init(struct gk20a *g)
trace->enable_count = 0;
return 0;
err = nvgpu_periodic_timer_init(&trace->poll_timer,
nvgpu_gr_fecs_trace_periodic_polling, g);
if (err != 0) {
nvgpu_err(g, "failed to create fecs_trace timer err=%d", err);
}
return err;
}
int nvgpu_gr_fecs_trace_deinit(struct gk20a *g)
@@ -170,11 +177,12 @@ int nvgpu_gr_fecs_trace_deinit(struct gk20a *g)
/*
* Check if tracer was enabled before attempting to stop the
* tracer thread.
* tracer timer.
*/
if (trace->enable_count > 0) {
nvgpu_thread_stop(&trace->poll_task);
nvgpu_periodic_timer_stop(&trace->poll_timer);
}
nvgpu_periodic_timer_destroy(&trace->poll_timer);
nvgpu_gr_fecs_trace_remove_contexts(g, &trace->context_list);
@@ -280,10 +288,10 @@ int nvgpu_gr_fecs_trace_enable(struct gk20a *g)
g->ops.gr.fecs_trace.set_read_index(g, write);
}
err = nvgpu_thread_create(&trace->poll_task, g,
nvgpu_gr_fecs_trace_periodic_polling, __func__);
err = nvgpu_periodic_timer_start(&trace->poll_timer,
GK20A_FECS_TRACE_FRAME_PERIOD_NS);
if (err != 0) {
nvgpu_warn(g, "failed to create FECS polling task");
nvgpu_warn(g, "failed to start FECS polling timer");
goto done;
}
}
@@ -333,7 +341,7 @@ int nvgpu_gr_fecs_trace_disable(struct gk20a *g)
g->ops.gr.fecs_trace.set_read_index(g, read);
}
}
nvgpu_thread_stop(&trace->poll_task);
nvgpu_periodic_timer_stop(&trace->poll_timer);
}
nvgpu_mutex_release(&trace->enable_lock);
@@ -572,23 +580,14 @@ done_unlock:
return err;
}
static int nvgpu_gr_fecs_trace_periodic_polling(void *arg)
static void nvgpu_gr_fecs_trace_periodic_polling(void *arg)
{
struct gk20a *g = (struct gk20a *)arg;
struct nvgpu_gr_fecs_trace *trace = g->fecs_trace;
nvgpu_log(g, gpu_dbg_ctxsw, "thread running");
while (!nvgpu_thread_should_stop(&trace->poll_task) &&
trace->enable_count > 0U) {
nvgpu_usleep_range(GK20A_FECS_TRACE_FRAME_PERIOD_US,
GK20A_FECS_TRACE_FRAME_PERIOD_US * 2U);
if (trace->enable_count > 0U) {
nvgpu_gr_fecs_trace_poll(g);
}
return 0;
}
int nvgpu_gr_fecs_trace_reset(struct gk20a *g)