diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_perf.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_perf.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c index ecfbc37b738b..231388d06c82 100644 --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -1853,8 +1853,8 @@ static int gen8_configure_all_contexts(struct i915_perf_stream *stream, }; #undef ctx_flexeuN struct intel_engine_cs *engine; - struct i915_gem_context *ctx; - int i; + struct i915_gem_context *ctx, *cn; + int i, err; for (i = 2; i < ARRAY_SIZE(regs); i++) regs[i].value = oa_config_flex_reg(oa_config, regs[i].reg); @@ -1877,16 +1877,27 @@ static int gen8_configure_all_contexts(struct i915_perf_stream *stream, * context. Contexts idle at the time of reconfiguration are not * trapped behind the barrier. */ - list_for_each_entry(ctx, &i915->contexts.list, link) { - int err; - + spin_lock(&i915->gem.contexts.lock); + list_for_each_entry_safe(ctx, cn, &i915->gem.contexts.list, link) { if (ctx == i915->kernel_context) continue; + if (!kref_get_unless_zero(&ctx->ref)) + continue; + + spin_unlock(&i915->gem.contexts.lock); + err = gen8_configure_context(ctx, regs, ARRAY_SIZE(regs)); - if (err) + if (err) { + i915_gem_context_put(ctx); return err; + } + + spin_lock(&i915->gem.contexts.lock); + list_safe_reset_next(ctx, cn, link); + i915_gem_context_put(ctx); } + spin_unlock(&i915->gem.contexts.lock); /* * After updating all other contexts, we need to modify ourselves. @@ -1895,7 +1906,6 @@ static int gen8_configure_all_contexts(struct i915_perf_stream *stream, */ for_each_uabi_engine(engine, i915) { struct intel_context *ce = engine->kernel_context; - int err; if (engine->class != RENDER_CLASS) continue; |