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

From: Sharat Masetty
Date: Tue Nov 06 2018 - 01:10:24 EST


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@xxxxxxxxxxxxxx>
---
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