RE: [PATCH 099/109] drm/amd/ras: allow waking RAS processing without an event

AMD General

Patch #99 ~ #109 are

Reviewed-by: Hawking Zhang <[email protected]>

Regards,
Hawking
-----Original Message-----
From: amd-gfx <[email protected]> On Behalf Of Alex Deucher
Sent: Saturday, August 15, 2026 5:03 AM
To: [email protected]
Cc: Liu, Xiang(Dean) <[email protected]>; Deucher, Alexander <[email protected]>
Subject: [PATCH 099/109] drm/amd/ras: allow waking RAS processing without an event

From: Xiang Liu <[email protected]>

GPU MCE handling queues bank data directly in the MCE FIFO and only needs to wake the RAS processing thread. Requiring a separate event request prevents this path from scheduling processing when no event object is available.

Permit a NULL request to skip event queue insertion while still incrementing the interrupt request count and waking the processing thread.

Signed-off-by: Xiang Liu <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
---
 drivers/gpu/drm/amd/ras/core/ras_process.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/ras/core/ras_process.c b/drivers/gpu/drm/amd/ras/core/ras_process.c
index 395d10c94b195..f313f2021f243 100644
--- a/drivers/gpu/drm/amd/ras/core/ras_process.c
+++ b/drivers/gpu/drm/amd/ras/core/ras_process.c
@@ -311,13 +311,16 @@ static int ras_process_add_non_umc_interrupt_req(struct ras_core_context *ras_co
        struct ras_process *ras_proc = &ras_core->ras_proc;
        int ret;

-       ret = ras_process_put_event(ras_core, req);
-       if (!ret) {
-               atomic_inc(&ras_proc->ras_interrupt_req);
-               wake_up(&ras_proc->ras_process_wq);
+       if (req) {
+               ret = ras_process_put_event(ras_core, req);
+               if (ret)
+                       return ret;
        }

-       return ret;
+       atomic_inc(&ras_proc->ras_interrupt_req);
+       wake_up(&ras_proc->ras_process_wq);
+
+       return 0;
 }

 int ras_process_add_interrupt_req(struct ras_core_context *ras_core,
--
2.55.0