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st/mesa: disable L3 thread pinning

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This implementation can have massive drawbacks.

Cc: 18.3 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
(cherry picked from commit e0c7114eb3)
This commit is contained in:
Marek Olšák 2018-11-12 15:43:58 -05:00 • committed by Emil Velikov
parent 6a706763d0
commit 7ea4e43c55
1 changed files with 0 additions and 9 deletions
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9
src/mesa/state_tracker/st_manager.c
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@ -1069,15 +1069,6 @@ st_api_make_current(struct st_api *stapi, struct st_context_iface *stctxi,
* of the referenced drawables no longer exist.
*/
st_framebuffers_purge(st);
/* Notify the driver that the context thread may have been changed.
* This should pin all driver threads to a specific L3 cache for optimal
* performance on AMD Zen CPUs.
*/
struct glthread_state *glthread = st->ctx->GLThread;
thrd_t *upper_thread = glthread ? &glthread->queue.threads[0] : NULL;
util_context_thread_changed(st->pipe, upper_thread);
}
else {
ret = _mesa_make_current(NULL, NULL, NULL);