From 8d15ede5cc6b66d5176856060b94196bc3382283 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Mon, 25 Nov 2019 16:27:37 +0000
Subject: drm/i915: Default to a more lenient forced preemption timeout
Git-commit: 8d15ede5cc6b66d5176856060b94196bc3382283
Patch-mainline: v5.5-rc1
References: bsc#1152489
Based on a sampling of a number of benchmarks across platforms, by
default opt for a much more lenient timeout so that we should not
adversely affect existing "good" clients.
640ms ought to be enough for anyone.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=112169
Fixes: 3a7a92aba8fb ("drm/i915/execlists: Force preemption")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Eero Tamminen <eero.t.tamminen@intel.com>
Cc: Dmitry Rogozhkin <dmitry.v.rogozhkin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191125162737.2161069-1-chris@chris-wilson.co.uk
(cherry picked from commit 5766a5ffc6a69595903865518c43636bde0e4ac4)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/i915/Kconfig.profile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/Kconfig.profile b/drivers/gpu/drm/i915/Kconfig.profile
index 1799537a3228..c280b6ae38eb 100644
--- a/drivers/gpu/drm/i915/Kconfig.profile
+++ b/drivers/gpu/drm/i915/Kconfig.profile
@@ -25,7 +25,7 @@ config DRM_I915_HEARTBEAT_INTERVAL
config DRM_I915_PREEMPT_TIMEOUT
int "Preempt timeout (ms, jiffy granularity)"
- default 100 # milliseconds
+ default 640 # milliseconds
help
How long to wait (in milliseconds) for a preemption event to occur
when submitting a new context via execlists. If the current context
--
2.28.0