nv-tegra-mirror/linux-nvgpu
1
0
Fork 0
mirror of git://nv-tegra.nvidia.com/linux-nvgpu.git synced 2025-12-25 11:04:51 +03:00
Code Issues Packages Projects Releases Wiki Activity

gpu: nvgpu: fix engine reset in FECS trace

Browse Source 
In virtualization case, VM server is the only one
allowed to write to ctxsw ring buffer. It will
also generate an event in case of engine reset.
Only generate a tracepoint on Guest OS side.

EVLR-314

Change-Id: I2cb09780a9b41237fe196ef1f3515923f36a24a4
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: http://git-master/r/1130743
(cherry picked from commit 4bbf9538e2a3375eb86b2feea6c605c3eec2ca40)
Reviewed-on: http://git-master/r/1133614
(cherry picked from commit 2076d944db41b37143c27795b3cffd88e99e0b00)
Reviewed-on: http://git-master/r/1150046
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Thomas Fleury
2016-04-21 16:35:44 -07:00
committed by Terje Bergstrom
parent 4df6cd4a34
commit 47e3d2e905
5 changed files with 14 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/nvgpu/gk20a/channel_gk20a.c
View File

@@ -885,11 +885,9 @@ static void gk20a_free_channel(struct channel_gk20a *ch)
mutex_lock(&g->fifo.gr_reset_mutex);
/* if lock is already taken, a reset is taking place
so no need to repeat */
if (!was_reset) {
gk20a_ctxsw_trace_channel_reset(g, ch);
if (!was_reset)
gk20a_fifo_reset_engine(g,
g->fifo.deferred_fault_engines);
}
mutex_unlock(&g->fifo.gr_reset_mutex);
g->fifo.deferred_fault_engines = 0;
g->fifo.deferred_reset_pending = false;