On Fri, Apr 23, 2021 at 05:31:13PM -0500, 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>
So the idea here is that since years we've had a watchdog uapi floating
about. Aim was for media, so that they could set very tight deadlines for
their transcodes jobs, so that if you have a corrupt bitstream (especially
for decoding) you don't hang your desktop unecessarily wrong.
But it's been stuck in limbo since forever, plus I get how this gets a bit
in the way of the proto ctx work, so makes sense to remove this prep work
again.
Maybe include the above in the commit message for a notch more context.
Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> ---
> 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);
> + }
> }
>
> 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 */
> --
> 2.31.1
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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