[Intel-gfx] [PATCH 3/5] drm/i915: Generate the engine name based on the instance number
Oscar Mateo
oscar.mateo at intel.com
Fri Apr 7 09:15:47 UTC 2017
Not really needed, but makes the next change a little bit more compact.
v2:
- Use zero-based numbering for engine names: xcs0, xcs1.. xcsN (Tvrtko, Chris)
- Make sure the mock engine name is null-terminated (Tvrtko, Chris)
v3: Because I'm stupid (Chris)
v4: Verify engine name wasn't truncated (Michal)
Cc: Paulo Zanoni <paulo.r.zanoni at intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
Signed-off-by: Oscar Mateo <oscar.mateo at intel.com>
---
drivers/gpu/drm/i915/intel_engine_cs.c | 5 +++--
drivers/gpu/drm/i915/intel_ringbuffer.h | 4 +++-
drivers/gpu/drm/i915/selftests/mock_engine.c | 3 ++-
3 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index 146d6b6..e40355c 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -71,7 +71,7 @@
.init_legacy = intel_init_bsd_ring_buffer,
},
[VCS2] = {
- .name = "vcs2",
+ .name = "vcs",
.hw_id = VCS2_HW,
.exec_id = I915_EXEC_BSD,
.class = VIDEO_DECODE_CLASS,
@@ -108,7 +108,8 @@
engine->id = id;
engine->i915 = dev_priv;
- engine->name = info->name;
+ WARN_ON(snprintf(engine->name, sizeof(engine->name), "%s%u",
+ info->name, info->instance) >= sizeof(engine->name));
engine->exec_id = info->exec_id;
engine->hw_id = engine->guc_id = info->hw_id;
engine->mmio_base = info->mmio_base;
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index 8b53ddb..fd8994b 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -187,9 +187,11 @@ enum intel_engine_id {
VECS
};
+#define INTEL_ENGINE_CS_MAX_NAME 8
+
struct intel_engine_cs {
struct drm_i915_private *i915;
- const char *name;
+ char name[INTEL_ENGINE_CS_MAX_NAME];
enum intel_engine_id id;
unsigned int exec_id;
unsigned int hw_id;
diff --git a/drivers/gpu/drm/i915/selftests/mock_engine.c b/drivers/gpu/drm/i915/selftests/mock_engine.c
index b89050e..9adacfb 100644
--- a/drivers/gpu/drm/i915/selftests/mock_engine.c
+++ b/drivers/gpu/drm/i915/selftests/mock_engine.c
@@ -140,7 +140,8 @@ struct intel_engine_cs *mock_engine(struct drm_i915_private *i915,
/* minimal engine setup for requests */
engine->base.i915 = i915;
- engine->base.name = name;
+ WARN_ON(snprintf(engine->base.name, sizeof(engine->base.name), "%s",
+ name) > sizeof(engine->base.name));
engine->base.id = id++;
engine->base.status_page.page_addr = (void *)(engine + 1);
--
1.9.1
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