* [PATCH AUTOSEL 4.19 08/19] drm/amd/display: Fix nanosec stat overflow
[not found] <20240329125100.3094358-1-sashal@kernel.org>
@ 2024-03-29 12:50 ` Sasha Levin
0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2024-03-29 12:50 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Aric Cyr, Rodrigo Siqueira, Daniel Wheeler, Alex Deucher,
Sasha Levin, harry.wentland, sunpeng.li, christian.koenig,
Xinhui.Pan, airlied, daniel, dillon.varone, aurabindo.pillai,
amd-gfx, dri-devel
From: Aric Cyr <aric.cyr@amd.com>
[ Upstream commit 14d68acfd04b39f34eea7bea65dda652e6db5bf6 ]
[Why]
Nanosec stats can overflow on long running systems potentially causing
statistic logging issues.
[How]
Use 64bit types for nanosec stats to ensure no overflow.
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/display/modules/inc/mod_stats.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/modules/inc/mod_stats.h b/drivers/gpu/drm/amd/display/modules/inc/mod_stats.h
index 3812094b52e8f..88b312c3eb43a 100644
--- a/drivers/gpu/drm/amd/display/modules/inc/mod_stats.h
+++ b/drivers/gpu/drm/amd/display/modules/inc/mod_stats.h
@@ -51,10 +51,10 @@ void mod_stats_update_event(struct mod_stats *mod_stats,
unsigned int length);
void mod_stats_update_flip(struct mod_stats *mod_stats,
- unsigned long timestamp_in_ns);
+ unsigned long long timestamp_in_ns);
void mod_stats_update_vupdate(struct mod_stats *mod_stats,
- unsigned long timestamp_in_ns);
+ unsigned long long timestamp_in_ns);
void mod_stats_update_freesync(struct mod_stats *mod_stats,
unsigned int v_total_min,
--
2.43.0
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2024-03-29 12:50 ` [PATCH AUTOSEL 4.19 08/19] drm/amd/display: Fix nanosec stat overflow Sasha Levin
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