diff options
| author | Kevin Park <Youngeun.Park@arm.com> | 2023-12-08 17:01:50 +0000 |
|---|---|---|
| committer | Renato Grottesi <otaner@google.com> | 2023-12-11 12:57:25 +0000 |
| commit | 2226bae46b7a606e97a9ced0e91d7209cd04758c (patch) | |
| tree | c5d287e0fd9699c37b4c42a40ece494c848f5b5a /mali_kbase/mali_kbase_gwt.c | |
| parent | cab5dbbee97ee9e3baa41d00372363a2f53196e0 (diff) | |
| download | gpu-2226bae46b7a606e97a9ced0e91d7209cd04758c.tar.gz | |
Fix deadlock BTW user thread and page fault worker
MIDCET-4882,GPUCORE-40989 Break deadlock BTW user thread and page fault worker
This commit adds a RW semaphore 1> to prevent MMU operations during
P.Mode entrance and 2> to break the deadlock on 'kctx reg_lock'
between user thread and page-fault worker thread.
Bug: 301064831
Signed-off-by: Renato Grottesi <otaner@google.com>
Test: manual run of the use case from the ticket
Provenance: https://code.ipdelivery.arm.com/c/GPU/mali-ddk/+/6221
Change-Id: I692f8fafc558a6a45b5ca4210aa3f66c2617553f
Diffstat (limited to 'mali_kbase/mali_kbase_gwt.c')
| -rw-r--r-- | mali_kbase/mali_kbase_gwt.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mali_kbase/mali_kbase_gwt.c b/mali_kbase/mali_kbase_gwt.c index 32c9241..4914e24 100644 --- a/mali_kbase/mali_kbase_gwt.c +++ b/mali_kbase/mali_kbase_gwt.c @@ -61,9 +61,9 @@ static void kbase_gpu_gwt_setup_pages(struct kbase_context *kctx, int kbase_gpu_gwt_start(struct kbase_context *kctx) { - kbase_gpu_vm_lock(kctx); + kbase_gpu_vm_lock_with_pmode_sync(kctx); if (kctx->gwt_enabled) { - kbase_gpu_vm_unlock(kctx); + kbase_gpu_vm_unlock_with_pmode_sync(kctx); return -EBUSY; } @@ -90,7 +90,7 @@ int kbase_gpu_gwt_start(struct kbase_context *kctx) kbase_gpu_gwt_setup_pages(kctx, ~KBASE_REG_GPU_WR); - kbase_gpu_vm_unlock(kctx); + kbase_gpu_vm_unlock_with_pmode_sync(kctx); return 0; } |