This is a note to let you know that I've just added the patch titled
drm/i915/perf: Determine context valid in OA reports
to the 6.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-perf-determine-context-valid-in-oa-reports.patch
and it can be found in the queue-6.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit aa421104e17f265ecb7ce60a8230a96facf4fcd6
Author: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@xxxxxxxxx>
Date: Wed Aug 2 13:28:54 2023 -0700
drm/i915/perf: Determine context valid in OA reports
[ Upstream commit cba94bbcff08d209710dd7bdc139caad675a6f8d ]
When supporting OA for TGL, it was seen that the context valid bit in
the report ID was not defined, however revisiting the spec seems to have
this bit defined. The bit is used to determine if a context is valid on
a context switch and is essential to determine active and idle periods
for a context. Re-enable the context valid bit for gen12 platforms.
BSpec: 52196 (description of report_id)
v2: Include BSpec reference (Ashutosh)
Fixes: 00a7f0d7155c ("drm/i915/tgl: Add perf support on TGL")
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@xxxxxxxxx>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20230802202854.1224547-1-umesh.nerlige.ramappa@xxxxxxxxx
(cherry picked from commit 7eeaedf79989a8f131939782832e21e9218ed2a0)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index 49c6f1ff11284..331685e1b7b7d 100644
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -482,8 +482,7 @@ static void oa_report_id_clear(struct i915_perf_stream *stream, u32 *report)
static bool oa_report_ctx_invalid(struct i915_perf_stream *stream, void *report)
{
return !(oa_report_id(stream, report) &
- stream->perf->gen8_valid_ctx_bit) &&
- GRAPHICS_VER(stream->perf->i915) <= 11;
+ stream->perf->gen8_valid_ctx_bit);
}
static u64 oa_timestamp(struct i915_perf_stream *stream, void *report)
@@ -5106,6 +5105,7 @@ static void i915_perf_init_info(struct drm_i915_private *i915)
perf->gen8_valid_ctx_bit = BIT(16);
break;
case 12:
+ perf->gen8_valid_ctx_bit = BIT(16);
/*
* Calculate offset at runtime in oa_pin_context for gen12 and
* cache the value in perf->ctx_oactxctrl_offset.
