From 0495c47909dac6b8822f63387f0704bae04ca794 Mon Sep 17 00:00:00 2001
From: Carter Li <zhangsongcui@live.cn>
Date: Thu, 9 Jul 2026 20:02:57 +0800
Subject: [PATCH] GPU (Linux): fixes GPU core counting on Asahi Linux

---
 src/detection/gpu/gpu_drm.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/detection/gpu/gpu_drm.c b/src/detection/gpu/gpu_drm.c
index ecc0e28f7..efeb15bfb 100644
--- a/src/detection/gpu/gpu_drm.c
+++ b/src/detection/gpu/gpu_drm.c
@@ -306,7 +306,11 @@ const char* ffDrmDetectAsahi(FFGPUResult* gpu, int fd) {
                                                   .size = sizeof(paramsGlobal),
                                               }) >= 0) {
         // They removed `unstable_uabi_version` from the struct. Hopefully they won't introduce new ABI changes.
-        gpu->coreCount = (int32_t) (paramsGlobal.num_clusters_total * paramsGlobal.num_cores_per_cluster);
+        assert(paramsGlobal.num_clusters_total <= DRM_ASAHI_MAX_CLUSTERS);
+        gpu->coreCount = 0;
+        for (uint32_t i = 0; i < paramsGlobal.num_clusters_total; i++) {
+            gpu->coreCount += __builtin_popcountll(paramsGlobal.core_masks[i]);
+        }
         gpu->frequency = paramsGlobal.max_frequency_khz / 1000;
         gpu->deviceId = ffGPUGeneral2Id(paramsGlobal.chip_id);