From: Marek Olšák <[email protected]>

---
 src/gallium/drivers/radeonsi/si_pipe.c | 2 +-
 src/gallium/drivers/radeonsi/si_pipe.h | 9 +++++++--
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/gallium/drivers/radeonsi/si_pipe.c 
b/src/gallium/drivers/radeonsi/si_pipe.c
index 0bc3002..234469f 100644
--- a/src/gallium/drivers/radeonsi/si_pipe.c
+++ b/src/gallium/drivers/radeonsi/si_pipe.c
@@ -963,21 +963,21 @@ struct pipe_screen *radeonsi_screen_create(struct 
radeon_winsys *ws,
        if (!util_queue_init(&sscreen->shader_compiler_queue, "si_shader",
                             32, num_compiler_threads,
                             UTIL_QUEUE_INIT_RESIZE_IF_FULL)) {
                si_destroy_shader_cache(sscreen);
                FREE(sscreen);
                return NULL;
        }
 
        if (!util_queue_init(&sscreen->shader_compiler_queue_low_priority,
                             "si_shader_low",
-                            32, num_compiler_threads,
+                            32, num_compiler_threads_lowprio,
                             UTIL_QUEUE_INIT_RESIZE_IF_FULL |
                             UTIL_QUEUE_INIT_USE_MINIMUM_PRIORITY)) {
               si_destroy_shader_cache(sscreen);
               FREE(sscreen);
               return NULL;
        }
 
        si_handle_env_var_force_family(sscreen);
 
        if (!debug_get_bool_option("RADEON_DISABLE_PERFCOUNTERS", false))
diff --git a/src/gallium/drivers/radeonsi/si_pipe.h 
b/src/gallium/drivers/radeonsi/si_pipe.h
index c028aba..d25705b 100644
--- a/src/gallium/drivers/radeonsi/si_pipe.h
+++ b/src/gallium/drivers/radeonsi/si_pipe.h
@@ -106,24 +106,29 @@ struct si_screen {
         * - Only VS, TCS, TES, PS are cached, out of which only the hw VS
         *   variants of VS and TES are cached, so LS and ES aren't.
         * - GS and CS aren't cached, but it's certainly possible to cache
         *   those as well.
         */
        mtx_t                   shader_cache_mutex;
        struct hash_table               *shader_cache;
 
        /* Shader compiler queue for multithreaded compilation. */
        struct util_queue               shader_compiler_queue;
-       LLVMTargetMachineRef            tm[4]; /* used by the queue only */
+       /* Use at most 3 normal compiler threads on quadcore and better.
+        * Hyperthreaded CPUs report the number of threads, but we want
+        * the number of cores. */
+       LLVMTargetMachineRef            tm[3]; /* used by the queue only */
 
        struct util_queue               shader_compiler_queue_low_priority;
-       LLVMTargetMachineRef            tm_low_priority[4];
+       /* Use at most 2 low priority threads on quadcore and better.
+        * We want to minimize the impact on multithreaded Mesa. */
+       LLVMTargetMachineRef            tm_low_priority[2]; /* at most 2 
threads */
 };
 
 struct si_blend_color {
        struct r600_atom                atom;
        struct pipe_blend_color         state;
 };
 
 struct si_sampler_view {
        struct pipe_sampler_view        base;
         /* [0..7] = image descriptor
-- 
2.7.4

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