[RFC 02/10] drm/amdgpu: add device-wide PMC config

[Zhu Lingshan <lingshan.zhu@amd.com>]

This commit implements a device-wide PMC config
for amdgpu, which including the profiling owner,
and the profiling enablement indicator.

Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h        | 8 ++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 3 +++
 2 files changed, 11 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 8eff6b9ebe81..45897dca802f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -620,6 +620,12 @@ enum amdgpu_enforce_isolation_mode {
 	AMDGPU_ENFORCE_ISOLATION_NO_CLEANER_SHADER = 3,
 };
 
+struct amdgpu_pmc_profiler {
+	struct mutex		lock;
+	struct drm_file		*owner;
+	bool			enable;
+};
+
 struct amdgpu_device {
 	struct device			*dev;
 	struct pci_dev			*pdev;
@@ -818,6 +824,8 @@ struct amdgpu_device {
 	 */
 	struct xarray userq_doorbell_xa;
 
+	struct amdgpu_pmc_profiler	pmc_profiler;
+
 	/* df */
 	struct amdgpu_df                df;
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index c924a55fd16f..74ed42e53264 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3673,6 +3673,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 	mutex_init(&adev->pm.stable_pstate_ctx_lock);
 	mutex_init(&adev->benchmark_mutex);
 	mutex_init(&adev->gfx.reset_sem_mutex);
+	mutex_init(&adev->pmc_profiler.lock);
 
 	/* Associate locks with lockdep classes for ordering validation */
 	amdgpu_lockdep_set_class(adev);
@@ -4244,6 +4245,8 @@ void amdgpu_device_fini_sw(struct amdgpu_device *adev)
 	kfree(adev->pci_state);
 	kfree(adev->pcie_reset_ctx.swds_pcistate);
 	kfree(adev->pcie_reset_ctx.swus_pcistate);
+
+	mutex_destroy(&adev->pmc_profiler.lock);
 }
 
 /**
-- 
2.55.0