On 23.10.2017 13:53, Grazvydas Ignotas wrote:
On Sun, Oct 22, 2017 at 9:33 PM, Nicolai Hähnle <nhaeh...@gmail.com> wrote:
From: Nicolai Hähnle <nicolai.haeh...@amd.com>
We only need the lock to guard changes in the variant linked list. The
actual compilation can happen outside the lock, since we use the ready
fence as a guard.
---
src/gallium/drivers/radeonsi/si_state_shaders.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/src/gallium/drivers/radeonsi/si_state_shaders.c
b/src/gallium/drivers/radeonsi/si_state_shaders.c
index 8c589928b8c..d0bef09748f 100644
--- a/src/gallium/drivers/radeonsi/si_state_shaders.c
+++ b/src/gallium/drivers/radeonsi/si_state_shaders.c
@@ -1618,41 +1618,42 @@ current_not_ready:
if (thread_index < 0)
util_queue_fence_wait(&sel->ready);
mtx_lock(&sel->mutex);
/* Find the shader variant. */
for (iter = sel->first_variant; iter; iter = iter->next_variant) {
/* Don't check the "current" shader. We checked it above. */
if (current != iter &&
memcmp(&iter->key, key, sizeof(*key)) == 0) {
+ mtx_unlock(&sel->mutex);
+
if
(unlikely(!util_queue_fence_is_signalled(&iter->ready))) {
/* If it's an optimized shader and its
compilation has
* been started but isn't done, use the
unoptimized
* shader so as not to cause a stall due to
compilation.
*/
if (iter->is_optimized) {
memset(&key->opt, 0, sizeof(key->opt));
mtx_unlock(&sel->mutex);
Double unlock
goto again;
}
util_queue_fence_wait(&iter->ready);
}
if (iter->compilation_failed) {
mtx_unlock(&sel->mutex);
here too.
Right on both counts. No idea what happened there :) I'll fix it.
Cheers,
Nicolai
return -1; /* skip the draw call */
}
state->current = iter;
- mtx_unlock(&sel->mutex);
return 0;
}
}
/* Build a new shader. */
shader = CALLOC_STRUCT(si_shader);
if (!shader) {
mtx_unlock(&sel->mutex);
return -ENOMEM;
}
Gražvydas
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