drm/i915/gvt: Use real time to do timer check

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intel_gvt_schedule check timer through a counter and is supposed
to wake up to increase the counter every ms.
In a system with heavy workload, gvt_service_thread can not get
a chance to run right after wake up and will be delayed several
milliseconds. As a result, one hundred counter interval means
several hundred milliseconds in real time.

This patch use real time instead of counter to do timer check.

v2: remove static variable. (Zhenyu)
v3: correct expire_time update. (Zhenyu)

Signed-off-by: Zhipeng Gong <zhipeng.gong@intel.com>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Min He <min.he@intel.com>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>

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Zhipeng Gong 2018-04-04 08:43:52 +08:00 • committed by Zhi Wang

parent fadec6eefe

commit 292bb0d38a

1 changed files with 7 additions and 2 deletions

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drivers/gpu/drm/i915/gvt/sched_policy.c

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