Commit 9a3dc318 authored by Dustin Brown's avatar Dustin Brown Committed by Russell King

ARM: 8691/1: Export save_stack_trace_tsk()

The kernel watchdog is a great debugging tool for finding tasks that
consume a disproportionate amount of CPU time in contiguous chunks. One
can imagine building a similar watchdog for arbitrary driver threads
using save_stack_trace_tsk() and print_stack_trace(). However, this is
not viable for dynamically loaded driver modules on ARM platforms
because save_stack_trace_tsk() is not exported for those architectures.
Export save_stack_trace_tsk() for the ARM architecture to align with
x86 and support various debugging use cases such as arbitrary driver
thread watchdog timers.
Signed-off-by: default avatarDustin Brown <dustinb@codeaurora.org>
Signed-off-by: default avatarRussell King <rmk+kernel@armlinux.org.uk>
parent 49460970
...@@ -171,6 +171,7 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace) ...@@ -171,6 +171,7 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
{ {
__save_stack_trace(tsk, trace, 1); __save_stack_trace(tsk, trace, 1);
} }
EXPORT_SYMBOL(save_stack_trace_tsk);
void save_stack_trace(struct stack_trace *trace) void save_stack_trace(struct stack_trace *trace)
{ {
......
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