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ac: add AMD_USERQ env var to enable user queue

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user queue is enabled only if AMD_USERQ env var is set and Kernel
supports user queue.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34803>
This commit is contained in:
Yogesh Mohan Marimuthu 2025-05-05 09:53:01 +05:30 • committed by Marge Bot
parent 97c48c5aa7
commit 137907945f
1 changed files with 4 additions and 6 deletions
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10
src/amd/common/ac_gpu_info.c
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@ -572,7 +572,7 @@ ac_query_gpu_info(int fd, void *dev_p, struct radeon_info *info,
return AC_QUERY_GPU_INFO_FAIL;
}
info->userq_ip_mask = device_info.userq_ip_mask;
info->userq_ip_mask = debug_get_bool_option("AMD_USERQ", false) ? device_info.userq_ip_mask : 0;
for (unsigned ip_type = 0; ip_type < AMD_NUM_IP_TYPES; ip_type++) {
struct drm_amdgpu_info_hw_ip ip_info = {0};
@ -581,15 +581,13 @@ ac_query_gpu_info(int fd, void *dev_p, struct radeon_info *info,
if (r)
continue;
if (ip_info.available_rings) {
info->ip[ip_type].num_queues = util_bitcount(ip_info.available_rings);
/* Kernel can set both available_rings and userq_ip_mask. Clear userq_ip_mask. */
info->userq_ip_mask &= ~BITFIELD_BIT(ip_type);
} else if (info->userq_ip_mask & BITFIELD_BIT(ip_type)) {
if (info->userq_ip_mask & BITFIELD_BIT(ip_type)) {
/* info[ip_type].num_queues variable is also used to describe if that ip_type is
* supported or not. Setting this variable to 1 for userqueues.
*/
info->ip[ip_type].num_queues = 1;
} else if (ip_info.available_rings) {
info->ip[ip_type].num_queues = util_bitcount(ip_info.available_rings);
} else {
continue;
}