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gpu: nvgpu: update vsms_mapping ioctl

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Update vsms_mapping ioctl to copy from the internal sm_to_cluster array to
new nvgpu_gpu_vsms_mapping_entry array before copying the latter back to user.

Bug 200260086

Change-Id: I0fccc6fb6e0d6b6f737b3a44818d2b47438cd3c8
Signed-off-by: Peter Daifuku <pdaifuku@nvidia.com>
Reviewed-on: http://git-master/r/1266174
(cherry picked from commit e28882c05491cb8f9573ff71c2d7309e5714e385)
Reviewed-on: http://git-master/r/1269623
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Peter Daifuku
2016-12-06 16:54:07 -08:00
committed by mobile promotions
parent 8ef013e36e
commit 1b539a33d8
2 changed files with 20 additions and 2 deletions
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17
drivers/gpu/nvgpu/gk20a/ctrl_gk20a.c
View File

@@ -582,11 +582,24 @@ static int gk20a_ctrl_vsm_mapping(struct gk20a *g,
{
int err = 0;
struct gr_gk20a *gr = &g->gr;
size_t write_size = gr->no_of_sm * sizeof(struct sm_info);
size_t write_size = gr->no_of_sm *
sizeof(struct nvgpu_gpu_vsms_mapping_entry);
struct nvgpu_gpu_vsms_mapping_entry *vsms_buf;
u32 i;
vsms_buf = kzalloc(write_size, GFP_KERNEL);
if (vsms_buf == NULL)
return -ENOMEM;
for (i = 0; i < gr->no_of_sm; i++) {
vsms_buf[i].gpc_index = gr->sm_to_cluster[i].gpc_index;
vsms_buf[i].tpc_index = gr->sm_to_cluster[i].tpc_index;
}
err = copy_to_user((void __user *)(uintptr_t)
args->vsms_map_buf_addr,
gr->sm_to_cluster, write_size);
vsms_buf, write_size);
kfree(vsms_buf);
return err;
}

5
include/uapi/linux/nvgpu.h
View File

@@ -383,6 +383,11 @@ struct nvgpu_gpu_num_vsms {
__u32 reserved;
};
struct nvgpu_gpu_vsms_mapping_entry {
__u8 gpc_index;
__u8 tpc_index;
};
struct nvgpu_gpu_vsms_mapping {
__u64 vsms_map_buf_addr;
};