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| author | Sidath Senanayake <sidaths@google.com> | 2018-09-27 14:34:14 +0200 |
|---|---|---|
| committer | Sidath Senanayake <sidaths@google.com> | 2018-09-27 14:34:14 +0200 |
| commit | f10b3de5283d0c196459f18160161e48cfadae81 (patch) | |
| tree | 7123dda75768c8b90b15c58523a7509a7c93a35b /mali_kbase/mali_kbase_debug_mem_view.c | |
| parent | f32af5a9ba3c2b556d92827a96dbeec3df200968 (diff) | |
| download | gpu-f10b3de5283d0c196459f18160161e48cfadae81.tar.gz | |
Mali Bifrost DDK r15p0 KMD
Provenance:
c4c373c4f (collaborate/EAC/b_r15p0)
BX304L01B-BU-00000-r15p0-01rel0
BX304L06A-BU-00000-r15p0-01rel0
BX304X07X-BU-00000-r15p0-01rel0
Signed-off-by: Sidath Senanayake <sidaths@google.com>
Change-Id: I09fe49ca693dfde616dd8d6b8c3e5b178a47e9f8
Diffstat (limited to 'mali_kbase/mali_kbase_debug_mem_view.c')
| -rw-r--r-- | mali_kbase/mali_kbase_debug_mem_view.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/mali_kbase/mali_kbase_debug_mem_view.c b/mali_kbase/mali_kbase_debug_mem_view.c index ee45529..8f46117 100644 --- a/mali_kbase/mali_kbase_debug_mem_view.c +++ b/mali_kbase/mali_kbase_debug_mem_view.c @@ -32,6 +32,10 @@ #ifdef CONFIG_DEBUG_FS +#if (KERNEL_VERSION(4, 1, 0) > LINUX_VERSION_CODE) +#define get_file_rcu(x) atomic_long_inc_not_zero(&(x)->f_count) +#endif + struct debug_mem_mapping { struct list_head node; @@ -199,9 +203,12 @@ static int debug_mem_open(struct inode *i, struct file *file) struct debug_mem_data *mem_data; int ret; + if (get_file_rcu(kctx_file) == 0) + return -ENOENT; + ret = seq_open(file, &ops); if (ret) - return ret; + goto open_fail; mem_data = kmalloc(sizeof(*mem_data), GFP_KERNEL); if (!mem_data) { @@ -213,8 +220,6 @@ static int debug_mem_open(struct inode *i, struct file *file) INIT_LIST_HEAD(&mem_data->mapping_list); - get_file(kctx_file); - kbase_gpu_vm_lock(kctx); ret = debug_mem_zone_open(&kctx->reg_rbtree_same, mem_data); @@ -246,10 +251,12 @@ out: list_del(&mapping->node); kfree(mapping); } - fput(kctx_file); kfree(mem_data); } seq_release(i, file); +open_fail: + fput(kctx_file); + return ret; } |