summaryrefslogtreecommitdiff
path: root/drivers/oprofile/buffer_sync.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/oprofile/buffer_sync.c')
-rw-r--r--drivers/oprofile/buffer_sync.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c
index d969bb13a252..f9031d31eeb7 100644
--- a/drivers/oprofile/buffer_sync.c
+++ b/drivers/oprofile/buffer_sync.c
@@ -524,6 +524,7 @@ void sync_buffer(int cpu)
{
struct mm_struct *mm = NULL;
struct mm_struct *oldmm;
+ unsigned long val;
struct task_struct *new;
unsigned long cookie = 0;
int in_kernel = 1;
@@ -559,10 +560,11 @@ void sync_buffer(int cpu)
state = sb_sample_start;
add_kernel_ctx_switch(flags & IS_KERNEL);
}
- if (flags & USER_CTX_SWITCH) {
+ if (flags & USER_CTX_SWITCH
+ && op_cpu_buffer_get_data(&entry, &val)) {
/* userspace context switch */
+ new = (struct task_struct *)val;
oldmm = mm;
- new = (struct task_struct *)sample->data[0];
release_mm(oldmm);
mm = take_tasks_mm(new);
if (mm != oldmm)