[1/3] drm/msm: use kvmalloc for ring data in gpu crashstate

Submitted by Sharat Masetty on Nov. 6, 2018, 6:10 a.m.

Details

Message ID 1541484606-20813-1-git-send-email-smasetty@codeaurora.org
State New
Headers show
Series "Series without cover letter" ( rev: 1 ) in Freedreno

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Commit Message

Sharat Masetty Nov. 6, 2018, 6:10 a.m.
The ringbuffer data to capture at crashtime can end up being large
sometimes, and the size can vary from being less than a page to the
full size of 32KB. So use the kvmalloc variant that perfectly fits the bill.

Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>
---
 drivers/gpu/drm/msm/adreno/adreno_gpu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

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diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 141062f..c93702d 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -406,7 +406,7 @@  int adreno_gpu_state_get(struct msm_gpu *gpu, struct msm_gpu_state *state)
 				size = j + 1;
 
 		if (size) {
-			state->ring[i].data = kmalloc(size << 2, GFP_KERNEL);
+			state->ring[i].data = kvmalloc(size << 2, GFP_KERNEL);
 			if (state->ring[i].data) {
 				memcpy(state->ring[i].data, gpu->rb[i]->start, size << 2);
 				state->ring[i].data_size = size << 2;
@@ -445,7 +445,7 @@  void adreno_gpu_state_destroy(struct msm_gpu_state *state)
 	int i;
 
 	for (i = 0; i < ARRAY_SIZE(state->ring); i++)
-		kfree(state->ring[i].data);
+		kvfree(state->ring[i].data);
 
 	for (i = 0; state->bos && i < state->nr_bos; i++)
 		kvfree(state->bos[i].data);

Comments

On Tue, Nov 06, 2018 at 11:40:04AM +0530, Sharat Masetty wrote:
> The ringbuffer data to capture at crashtime can end up being large
> sometimes, and the size can vary from being less than a page to the
> full size of 32KB. So use the kvmalloc variant that perfectly fits the bill.
> 
> Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>

Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
> ---
>  drivers/gpu/drm/msm/adreno/adreno_gpu.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> index 141062f..c93702d 100644
> --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> @@ -406,7 +406,7 @@ int adreno_gpu_state_get(struct msm_gpu *gpu, struct msm_gpu_state *state)
>  				size = j + 1;
>  
>  		if (size) {
> -			state->ring[i].data = kmalloc(size << 2, GFP_KERNEL);
> +			state->ring[i].data = kvmalloc(size << 2, GFP_KERNEL);
>  			if (state->ring[i].data) {
>  				memcpy(state->ring[i].data, gpu->rb[i]->start, size << 2);
>  				state->ring[i].data_size = size << 2;
> @@ -445,7 +445,7 @@ void adreno_gpu_state_destroy(struct msm_gpu_state *state)
>  	int i;
>  
>  	for (i = 0; i < ARRAY_SIZE(state->ring); i++)
> -		kfree(state->ring[i].data);
> +		kvfree(state->ring[i].data);
>  
>  	for (i = 0; state->bos && i < state->nr_bos; i++)
>  		kvfree(state->bos[i].data);
> -- 
> 1.9.1
>