drm/amdgpu: Put drm_dev_enter/exit outside hot codepath

[sfrench/cifs-2.6.git] / drivers / gpu / drm / amd / amdgpu / amdgpu_gart.c

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
index 76efd5f8950fcd3b2a6f968b9abfa7352e7b11f9..d7e4f4660acf230a4d8d600e3d4ffbbe47da977e 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
@@ -34,6 +34,7 @@
 #include <asm/set_memory.h>
 #endif
 #include "amdgpu.h"
+#include <drm/drm_drv.h>
 
 /*
  * GART
@@ -230,12 +231,16 @@ int amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset,
        u64 page_base;
        /* Starting from VEGA10, system bit must be 0 to mean invalid. */
        uint64_t flags = 0;
+       int idx;
 
        if (!adev->gart.ready) {
                WARN(1, "trying to unbind memory from uninitialized GART !\n");
                return -EINVAL;
        }
 
+       if (!drm_dev_enter(&adev->ddev, &idx))
+               return 0;
+
        t = offset / AMDGPU_GPU_PAGE_SIZE;
        p = t / AMDGPU_GPU_PAGES_IN_CPU_PAGE;
        for (i = 0; i < pages; i++, p++) {
@@ -254,6 +259,7 @@ int amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset,
        for (i = 0; i < adev->num_vmhubs; i++)
                amdgpu_gmc_flush_gpu_tlb(adev, 0, i, 0);
 
+       drm_dev_exit(idx);
        return 0;
 }
 
@@ -276,12 +282,16 @@ int amdgpu_gart_map(struct amdgpu_device *adev, uint64_t offset,
 {
        uint64_t page_base;
        unsigned i, j, t;
+       int idx;
 
        if (!adev->gart.ready) {
                WARN(1, "trying to bind memory to uninitialized GART !\n");
                return -EINVAL;
        }
 
+       if (!drm_dev_enter(&adev->ddev, &idx))
+               return 0;
+
        t = offset / AMDGPU_GPU_PAGE_SIZE;
 
        for (i = 0; i < pages; i++) {
@@ -291,6 +301,7 @@ int amdgpu_gart_map(struct amdgpu_device *adev, uint64_t offset,
                        page_base += AMDGPU_GPU_PAGE_SIZE;
                }
        }
+       drm_dev_exit(idx);
        return 0;
 }