Verify that if a context is active at the time it is closed, that it is
either persistent and preemptible (with hangcheck running) or it shall
be removed from execution.
Fixes: 9a40bddd47ca ("drm/i915/gt: Expose heartbeat interval via sysfs")
Testcase: igt/gem_ctx_persistence/heartbeat-close
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # v5.7+
---
drivers/gpu/drm/i915/gem/i915_gem_context.c | 26 ++++++++-------------
1 file changed, 10 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index db893f6c516b..ba8ef1225f58 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -431,8 +431,7 @@ static bool __cancel_engine(struct intel_engine_cs *engine)
* kill the banned context, we fallback to doing a local reset
* instead.
*/
- if (IS_ACTIVE(CONFIG_DRM_I915_PREEMPT_TIMEOUT) &&
- !intel_engine_pulse(engine))
+ if (intel_engine_pulse(engine) == 0)
return true;
/* If we are unable to send a pulse, try resetting this engine. */
@@ -493,7 +492,7 @@ static struct intel_engine_cs *active_engine(struct intel_context *ce)
return engine;
}
-static void kill_engines(struct i915_gem_engines *engines)
+static void kill_engines(struct i915_gem_engines *engines, bool ban)
{
struct i915_gem_engines_iter it;
struct intel_context *ce;
@@ -508,7 +507,7 @@ static void kill_engines(struct i915_gem_engines *engines)
for_each_gem_engine(ce, engines, it) {
struct intel_engine_cs *engine;
- if (intel_context_set_banned(ce))
+ if (ban && intel_context_set_banned(ce))
continue;
/*
@@ -521,7 +520,7 @@ static void kill_engines(struct i915_gem_engines *engines)
engine = active_engine(ce);
/* First attempt to gracefully cancel the context */
- if (engine && !__cancel_engine(engine))
+ if (engine && !__cancel_engine(engine) && ban)
/*
* If we are unable to send a preemptive pulse to bump
* the context from the GPU, we have to resort to a full
@@ -531,8 +530,10 @@ static void kill_engines(struct i915_gem_engines *engines)
}
}
-static void kill_stale_engines(struct i915_gem_context *ctx)
+static void kill_context(struct i915_gem_context *ctx)
{
+ bool ban = (!i915_gem_context_is_persistent(ctx) ||
+ !ctx->i915->params.enable_hangcheck);
struct i915_gem_engines *pos, *next;
spin_lock_irq(&ctx->stale.lock);
@@ -545,7 +546,7 @@ static void kill_stale_engines(struct i915_gem_context *ctx)
spin_unlock_irq(&ctx->stale.lock);
- kill_engines(pos);
+ kill_engines(pos, ban);
spin_lock_irq(&ctx->stale.lock);
GEM_BUG_ON(i915_sw_fence_signaled(&pos->fence));
@@ -557,11 +558,6 @@ static void kill_stale_engines(struct i915_gem_context *ctx)
spin_unlock_irq(&ctx->stale.lock);
}
-static void kill_context(struct i915_gem_context *ctx)
-{
- kill_stale_engines(ctx);
-}
-
static void engines_idle_release(struct i915_gem_context *ctx,
struct i915_gem_engines *engines)
{
@@ -596,7 +592,7 @@ static void engines_idle_release(struct i915_gem_context *ctx,
kill:
if (list_empty(&engines->link)) /* raced, already closed */
- kill_engines(engines);
+ kill_engines(engines, true);
i915_sw_fence_commit(&engines->fence);
}
@@ -654,9 +650,7 @@ static void context_close(struct i915_gem_context *ctx)
* case we opt to forcibly kill off all remaining requests on
* context close.
*/
- if (!i915_gem_context_is_persistent(ctx) ||
- !ctx->i915->params.enable_hangcheck)
- kill_context(ctx);
+ kill_context(ctx);
i915_gem_context_put(ctx);
}
--
2.20.1
