From 72b72ae47324a0b9851e254bb525d1dc47995e4e Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Fri, 10 Feb 2017 10:14:22 +0000 Subject: [PATCH] drm/i915: Always pin contexts into the high GGTT Now that we have fast top-down insertion into the drm_mm, we can use it for frequent runtime operations like insertion of the context object, whereas before we limited it to the one-off insertion of the pinned kernel context. Keeping the active context objects out of the mappable region of the global GTT (except under memory pressure) improves our ability to allocate mappable aperture region without triggering a GPU stall. Signed-off-by: Chris Wilson Cc: Joonas Lahtinen Link: http://patchwork.freedesktop.org/patch/msgid/20170210101422.1598-1-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen Reviewed-by: Mika Kuoppala --- drivers/gpu/drm/i915/intel_lrc.c | 4 +--- drivers/gpu/drm/i915/intel_ringbuffer.c | 12 +++--------- 2 files changed, 4 insertions(+), 12 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index b21dbd44045e..697776d427b9 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -773,11 +773,9 @@ static int execlists_context_pin(struct intel_engine_cs *engine, } GEM_BUG_ON(!ce->state); - flags = PIN_GLOBAL; + flags = PIN_GLOBAL | PIN_HIGH; if (ctx->ggtt_offset_bias) flags |= PIN_OFFSET_BIAS | ctx->ggtt_offset_bias; - if (i915_gem_context_is_kernel(ctx)) - flags |= PIN_HIGH; ret = i915_vma_pin(ce->state, 0, GEN8_LR_CONTEXT_ALIGN, flags); if (ret) diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index d3d1e64f2498..8ae78b79178f 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -2004,7 +2004,7 @@ intel_ring_free(struct intel_ring *ring) kfree(ring); } -static int context_pin(struct i915_gem_context *ctx, unsigned int flags) +static int context_pin(struct i915_gem_context *ctx) { struct i915_vma *vma = ctx->engine[RCS].state; int ret; @@ -2019,7 +2019,7 @@ static int context_pin(struct i915_gem_context *ctx, unsigned int flags) return ret; } - return i915_vma_pin(vma, 0, ctx->ggtt_alignment, PIN_GLOBAL | flags); + return i915_vma_pin(vma, 0, ctx->ggtt_alignment, PIN_GLOBAL | PIN_HIGH); } static int intel_ring_context_pin(struct intel_engine_cs *engine, @@ -2034,13 +2034,7 @@ static int intel_ring_context_pin(struct intel_engine_cs *engine, return 0; if (ce->state) { - unsigned int flags; - - flags = 0; - if (i915_gem_context_is_kernel(ctx)) - flags = PIN_HIGH; - - ret = context_pin(ctx, flags); + ret = context_pin(ctx); if (ret) goto error; } -- 2.20.1