On 28/04/2021 18:24, Jason Ekstrand wrote:
On Wed, Apr 28, 2021 at 10:55 AM Tvrtko Ursulin
<tvrtko.ursulin@xxxxxxxxxxxxxxx> wrote:
On 23/04/2021 23:31, Jason Ekstrand wrote:
Instead of handling it like a context param, unconditionally set it when
intel_contexts are created. This doesn't fix anything but does simplify
the code a bit.
Signed-off-by: Jason Ekstrand <jason@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/gem/i915_gem_context.c | 43 +++----------------
.../gpu/drm/i915/gem/i915_gem_context_types.h | 4 --
drivers/gpu/drm/i915/gt/intel_context_param.h | 3 +-
3 files changed, 6 insertions(+), 44 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index 35bcdeddfbf3f..1091cc04a242a 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -233,7 +233,11 @@ static void intel_context_set_gem(struct intel_context *ce,
intel_engine_has_timeslices(ce->engine))
__set_bit(CONTEXT_USE_SEMAPHORES, &ce->flags);
- intel_context_set_watchdog_us(ce, ctx->watchdog.timeout_us);
+ if (IS_ACTIVE(CONFIG_DRM_I915_REQUEST_TIMEOUT) &&
+ ctx->i915->params.request_timeout_ms) {
+ unsigned int timeout_ms = ctx->i915->params.request_timeout_ms;
+ intel_context_set_watchdog_us(ce, (u64)timeout_ms * 1000);
Blank line between declarations and code please, or just lose the local.
Otherwise looks okay. Slight change that same GEM context can now have a
mix of different request expirations isn't interesting I think. At least
the change goes away by the end of the series.
In order for that to happen, I think you'd have to have a race between
CREATE_CONTEXT and someone smashing the request_timeout_ms param via
sysfs. Or am I missing something? Given that timeouts are really
per-engine anyway, I don't think we need to care too much about that.
We don't care, no.
For completeness only - by the end of the series it is what you say. But
at _this_ point in the series though it is if modparam changes at any
point between context create and replacing engines. Which is a change
compared to before this patch, since modparam was cached in the GEM
context so far. So one GEM context was a single request_timeout_ms.
Regards,
Tvrtko
--Jason
Regards,
Tvrtko
+ }
}
static void __free_engines(struct i915_gem_engines *e, unsigned int count)
@@ -792,41 +796,6 @@ static void __assign_timeline(struct i915_gem_context *ctx,
context_apply_all(ctx, __apply_timeline, timeline);
}
-static int __apply_watchdog(struct intel_context *ce, void *timeout_us)
-{
- return intel_context_set_watchdog_us(ce, (uintptr_t)timeout_us);
-}
-
-static int
-__set_watchdog(struct i915_gem_context *ctx, unsigned long timeout_us)
-{
- int ret;
-
- ret = context_apply_all(ctx, __apply_watchdog,
- (void *)(uintptr_t)timeout_us);
- if (!ret)
- ctx->watchdog.timeout_us = timeout_us;
-
- return ret;
-}
-
-static void __set_default_fence_expiry(struct i915_gem_context *ctx)
-{
- struct drm_i915_private *i915 = ctx->i915;
- int ret;
-
- if (!IS_ACTIVE(CONFIG_DRM_I915_REQUEST_TIMEOUT) ||
- !i915->params.request_timeout_ms)
- return;
-
- /* Default expiry for user fences. */
- ret = __set_watchdog(ctx, i915->params.request_timeout_ms * 1000);
- if (ret)
- drm_notice(&i915->drm,
- "Failed to configure default fence expiry! (%d)",
- ret);
-}
-
static struct i915_gem_context *
i915_gem_create_context(struct drm_i915_private *i915, unsigned int flags)
{
@@ -871,8 +840,6 @@ i915_gem_create_context(struct drm_i915_private *i915, unsigned int flags)
intel_timeline_put(timeline);
}
- __set_default_fence_expiry(ctx);
-
trace_i915_context_create(ctx);
return ctx;
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
index 5ae71ec936f7c..676592e27e7d2 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
@@ -153,10 +153,6 @@ struct i915_gem_context {
*/
atomic_t active_count;
- struct {
- u64 timeout_us;
- } watchdog;
-
/**
* @hang_timestamp: The last time(s) this context caused a GPU hang
*/
diff --git a/drivers/gpu/drm/i915/gt/intel_context_param.h b/drivers/gpu/drm/i915/gt/intel_context_param.h
index dffedd983693d..0c69cb42d075c 100644
--- a/drivers/gpu/drm/i915/gt/intel_context_param.h
+++ b/drivers/gpu/drm/i915/gt/intel_context_param.h
@@ -10,11 +10,10 @@
#include "intel_context.h"
-static inline int
+static inline void
intel_context_set_watchdog_us(struct intel_context *ce, u64 timeout_us)
{
ce->watchdog.timeout_us = timeout_us;
- return 0;
}
#endif /* INTEL_CONTEXT_PARAM_H */
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