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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-11-26 21:48:56 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-11-27 16:37:15 +0000 |
| commit | c82297fcfaff2862686094061772070e6763e00c (patch) | |
| tree | cc1f7b9c00613a866f4a7db2ac558bcaf9c24f5f /drivers/gpu/drm/i915/i915_gem_context.c | |
| parent | fd94d53e55bd487368dfee9f1af24da78b2bb582 (diff) | |
| download | blackbird-op-linux-c82297fcfaff2862686094061772070e6763e00c.tar.gz blackbird-op-linux-c82297fcfaff2862686094061772070e6763e00c.zip | |
drm/i915: Flush everything on switching to the kernel_context
Even though all rendering should have been flushed at the end of the
previous requests, add an extra flush after switching to the
kernel_context. As the switch to the kernel_context is used when idling
the gpu (e.g. suspend), having an extra layer of paranoia to ensure
everything is flushed to memory seems sensible.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171126214856.23702-1-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_context.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_context.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c index aee0f6d72d33..ce3139e5ec4c 100644 --- a/drivers/gpu/drm/i915/i915_gem_context.c +++ b/drivers/gpu/drm/i915/i915_gem_context.c @@ -620,7 +620,14 @@ int i915_gem_switch_to_kernel_context(struct drm_i915_private *dev_priv) GFP_KERNEL); } - i915_add_request(req); + /* + * Force a flush after the switch to ensure that all rendering + * and operations prior to switching to the kernel context hits + * memory. This should be guaranteed by the previous request, + * but an extra layer of paranoia before we declare the system + * idle (on suspend etc) is advisable! + */ + __i915_add_request(req, true); } return 0; |
