diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-10-08 19:59:41 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-10-08 22:19:00 +0100 |
| commit | 6ad145fe0246abe31a312ce19321bb5b11635802 (patch) | |
| tree | a34ade0179cff75ea07b227b016b0e5a14fb018b /drivers | |
| parent | 7c98501acb94318819f5ea764fc3aae09f69aff6 (diff) | |
| download | linux-6ad145fe0246abe31a312ce19321bb5b11635802.tar.bz2 | |
drm/i915/gt: Give engine->kernel_context distinct timeline lock classes
Assign a separate lockclass to the perma-pinned timelines of the
kernel_context, such that we can use them from within the user timelines
should we ever need to inject GPU operations to fixup faults during
request construction.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Matthew Auld <matthew.william.auld@gmail.com>
Reviewed-by: Matthew Auld <matthew.william.auld@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191008185941.15228-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_engine_cs.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index 7e2aa7a6bef0..5aa1371f6a0f 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -736,6 +736,7 @@ intel_engine_init_active(struct intel_engine_cs *engine, unsigned int subclass) static struct intel_context * create_kernel_context(struct intel_engine_cs *engine) { + static struct lock_class_key kernel; struct intel_context *ce; int err; @@ -751,6 +752,14 @@ create_kernel_context(struct intel_engine_cs *engine) return ERR_PTR(err); } + /* + * Give our perma-pinned kernel timelines a separate lockdep class, + * so that we can use them from within the normal user timelines + * should we need to inject GPU operations during their request + * construction. + */ + lockdep_set_class(&ce->timeline->mutex, &kernel); + return ce; } |