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authorIngo Molnar <mingo@elte.hu>2009-02-18 01:08:13 +0100
committerIngo Molnar <mingo@elte.hu>2009-02-18 01:08:13 +0100
commit37bd824a35a60abc73e5fa8816bd5f50c913d69b (patch)
treee6f718191893ccb713f854fc8bf4a5866a41fe2b /kernel/trace/ftrace.c
parent73d3fd96e77745742f3750b7b19ee42204adc210 (diff)
parent5b058bcde961bf28678a70e44c079107313543b6 (diff)
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Merge branches 'tracing/ftrace' and 'tracing/urgent' into tracing/core
Diffstat (limited to 'kernel/trace/ftrace.c')
-rw-r--r--kernel/trace/ftrace.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 4e6c87ecf1b..aee95aea57e 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -2562,7 +2562,7 @@ free:
static int start_graph_tracing(void)
{
struct ftrace_ret_stack **ret_stack_list;
- int ret;
+ int ret, cpu;
ret_stack_list = kmalloc(FTRACE_RETSTACK_ALLOC_SIZE *
sizeof(struct ftrace_ret_stack *),
@@ -2571,6 +2571,10 @@ static int start_graph_tracing(void)
if (!ret_stack_list)
return -ENOMEM;
+ /* The cpu_boot init_task->ret_stack will never be freed */
+ for_each_online_cpu(cpu)
+ ftrace_graph_init_task(idle_task(cpu));
+
do {
ret = alloc_retstack_tasklist(ret_stack_list);
} while (ret == -EAGAIN);