diff options
| author | Fei Yang <fei.yang@intel.com> | 2024-10-17 09:27:10 -0700 |
|---|---|---|
| committer | John Harrison <John.C.Harrison@Intel.com> | 2024-10-21 10:34:45 -0700 |
| commit | 6ef3bb60557d5e7f5af442c8c9ef0a9190bf3d23 (patch) | |
| tree | 6c398e4c51c0143adeaead32e79afe3907162238 | |
| parent | 2677520152bc9e732d5e033fe013444db5b4db84 (diff) | |
drm/xe: enable lite restore
The lite restore is a performance improvement feature which avoids
unnecessary context switch (flush, save and restore) if the incoming
context has a ContextID matching that of the outgoing context. The
scheduling is done by the GuC firmware, so on the driver side it's
just a matter of setting corresponding GUC_CTL_FEATURE flag.
This is supposed to be enabled by default, thus the flag is set
unconditionally.
Signed-off-by: Fei Yang <fei.yang@intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241017162710.942553-2-fei.yang@intel.com
| -rw-r--r-- | drivers/gpu/drm/xe/xe_guc.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_guc_fwif.h | 1 |
2 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/xe/xe_guc.c b/drivers/gpu/drm/xe/xe_guc.c index 76437d42b8a1..04e50eb6e506 100644 --- a/drivers/gpu/drm/xe/xe_guc.c +++ b/drivers/gpu/drm/xe/xe_guc.c @@ -70,7 +70,7 @@ static u32 guc_ctl_debug_flags(struct xe_guc *guc) static u32 guc_ctl_feature_flags(struct xe_guc *guc) { - u32 flags = 0; + u32 flags = GUC_CTL_ENABLE_LITE_RESTORE; if (!guc_to_xe(guc)->info.skip_guc_pc) flags |= GUC_CTL_ENABLE_SLPC; diff --git a/drivers/gpu/drm/xe/xe_guc_fwif.h b/drivers/gpu/drm/xe/xe_guc_fwif.h index 01e3ab590c3a..08ffe59f22fa 100644 --- a/drivers/gpu/drm/xe/xe_guc_fwif.h +++ b/drivers/gpu/drm/xe/xe_guc_fwif.h @@ -105,6 +105,7 @@ struct guc_update_exec_queue_policy { #define GUC_CTL_FEATURE 2 #define GUC_CTL_ENABLE_SLPC BIT(2) +#define GUC_CTL_ENABLE_LITE_RESTORE BIT(4) #define GUC_CTL_DISABLE_SCHEDULER BIT(14) #define GUC_CTL_DEBUG 3 |