From f4b77e465648e87b19a7df4bb2a121ac8ac1b851 Mon Sep 17 00:00:00 2001 From: Thomas Fleury Date: Thu, 16 Jun 2016 17:31:45 -0700 Subject: gpu: nvgpu: process granularity for FECS traces When processing FECS traces, a hash table is used to retrieve the 'pid' of the process that created the channel/TSG. Report process identifer (aka tgid in kernel) instead of thread identifier (aka pid) for FECS traces. Bug 1736423 Change-Id: I54cb9d298b9fe3e1cccdd7145604cd01c5758c9d Signed-off-by: Thomas Fleury Reviewed-on: http://git-master/r/1166501 (cherry picked from commit f7fd1f6d7ad0753b787ec20604a08a1f4882fe6f) Reviewed-on: http://git-master/r/1168728 (cherry picked from commit 97a62e5b89352fce576f1bca71b38bf2242ff047) Reviewed-on: http://git-master/r/1177823 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Richard Zhao GVS: Gerrit_Virtual_Submit Reviewed-by: Alex Waterman Reviewed-by: Vijayakumar Subbu --- drivers/gpu/nvgpu/gk20a/fecs_trace_gk20a.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers/gpu/nvgpu/gk20a/fecs_trace_gk20a.c') diff --git a/drivers/gpu/nvgpu/gk20a/fecs_trace_gk20a.c b/drivers/gpu/nvgpu/gk20a/fecs_trace_gk20a.c index 15e645f2..abf1cc55 100644 --- a/drivers/gpu/nvgpu/gk20a/fecs_trace_gk20a.c +++ b/drivers/gpu/nvgpu/gk20a/fecs_trace_gk20a.c @@ -631,10 +631,14 @@ static int gk20a_fecs_trace_bind_channel(struct gk20a *g, GK20A_FECS_TRACE_NUM_RECORDS)); gk20a_mem_end(g, mem); + + /* pid (process identifier) in user space, corresponds to tgid (thread + * group id) in kernel space. + */ if (gk20a_is_channel_marked_as_tsg(ch)) pid = tsg_gk20a_from_ch(ch)->tgid; else - pid = ch->pid; + pid = ch->tgid; gk20a_fecs_trace_hash_add(g, context_ptr, pid); return 0; -- cgit v1.2.2