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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-07-21 15:32:30 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2017-07-27 10:38:47 +0300 |
| commit | 77b25a972b5d4ed93b8a86d3e383ec2092fd89b1 (patch) | |
| tree | 2f92c0d44f24804ca12d067300df19d7d5474cea /drivers/gpu/drm/i915/i915_gem.c | |
| parent | ed454f2cd61a54d00c267e385c0600bae0761833 (diff) | |
| download | linux-77b25a972b5d4ed93b8a86d3e383ec2092fd89b1.tar.xz | |
drm/i915: Make i915_gem_context_mark_guilty() safe for unlocked updates
Since we make call i915_gem_context_mark_guilty() concurrently when
resetting different engines in parallel, we need to make sure that our
updates are safe for the unlocked access.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michel Thierry <michel.thierry@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170721123238.16428-12-chris@chris-wilson.co.uk
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 32 |
1 files changed, 18 insertions, 14 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index fcf7fee7ca71..a9ea83ea321b 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2740,34 +2740,38 @@ i915_gem_object_pwrite_gtt(struct drm_i915_gem_object *obj, return 0; } -static bool ban_context(const struct i915_gem_context *ctx) +static bool ban_context(const struct i915_gem_context *ctx, + unsigned int score) { return (i915_gem_context_is_bannable(ctx) && - ctx->ban_score >= CONTEXT_SCORE_BAN_THRESHOLD); + score >= CONTEXT_SCORE_BAN_THRESHOLD); } static void i915_gem_context_mark_guilty(struct i915_gem_context *ctx) { - ctx->guilty_count++; - ctx->ban_score += CONTEXT_SCORE_GUILTY; - if (ban_context(ctx)) - i915_gem_context_set_banned(ctx); + unsigned int score; + bool banned; - DRM_DEBUG_DRIVER("context %s marked guilty (score %d) banned? %s\n", - ctx->name, ctx->ban_score, - yesno(i915_gem_context_is_banned(ctx))); + atomic_inc(&ctx->guilty_count); - if (!i915_gem_context_is_banned(ctx) || IS_ERR_OR_NULL(ctx->file_priv)) + score = atomic_add_return(CONTEXT_SCORE_GUILTY, &ctx->ban_score); + banned = ban_context(ctx, score); + DRM_DEBUG_DRIVER("context %s marked guilty (score %d) banned? %s\n", + ctx->name, score, yesno(banned)); + if (!banned) return; - ctx->file_priv->context_bans++; - DRM_DEBUG_DRIVER("client %s has had %d context banned\n", - ctx->name, ctx->file_priv->context_bans); + i915_gem_context_set_banned(ctx); + if (!IS_ERR_OR_NULL(ctx->file_priv)) { + atomic_inc(&ctx->file_priv->context_bans); + DRM_DEBUG_DRIVER("client %s has had %d context banned\n", + ctx->name, atomic_read(&ctx->file_priv->context_bans)); + } } static void i915_gem_context_mark_innocent(struct i915_gem_context *ctx) { - ctx->active_count++; + atomic_inc(&ctx->active_count); } struct drm_i915_gem_request * |