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gpu: nvgpu: gv11b: ap_compute fix

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- During nvgpu_poweron, PERFMON_INIT RPC and
  ACR_INIT_WPR_REGION command is sent to PMU in two different threads.
- For perfmon RPC method is used and for ACR, CMD-MSG queue is used.
- Since the pmu thread and poweron thread run in parallel, the
  pmu sequence acquired by both can have the same seq_id.
- For Perfmon RPC, nvgpu_pmu_seq_free_release() is called
  followed by nvgpu_pmu_seq_release().
- This causes clearing of sequence for the next command.
- To resolve this, instead of nvgpu_pmu_seq_free_release(),
  just free the rpc-payload after getting ack for perfmon and
  then do sequence release.
- This ensures that the ACR cmd sent just after perfmon RPC does
  not get the same seq_id and the sequence is not cleared.

Bug 4074021

Change-Id: Id9972cb719458062d8c7d9e226a25599026c052b
Signed-off-by: Divya <dsinghatwari@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2889840
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Mahantesh Kumbar <mkumbar@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Divya
2023-04-18 11:16:07 +00:00
committed by mobile promotions
parent 11c07fdfa8
commit 3e5424bee3
1 changed files with 8 additions and 2 deletions
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10
drivers/gpu/nvgpu/common/pmu/ipc/pmu_msg.c
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@@ -641,11 +641,17 @@ void nvgpu_pmu_rpc_handler(struct gk20a *g, struct pmu_msg *msg,
exit: exit:
rpc_payload->complete = true; rpc_payload->complete = true;
/* free allocated memory and release the sequence */ /*
* free allocated memory and set seq_free_status to
* true to sync the memory free
*/
if (rpc_payload->is_mem_free_set) { if (rpc_payload->is_mem_free_set) {
seq = nvgpu_pmu_sequences_get_seq(pmu->sequences, seq = nvgpu_pmu_sequences_get_seq(pmu->sequences,
msg->hdr.seq_id); msg->hdr.seq_id);
nvgpu_pmu_seq_free_release(g, pmu->sequences, seq); if (seq->seq_free_status == false) {
nvgpu_kfree(g, rpc_payload);
seq->seq_free_status = true;
}
} }
} }