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

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

arch/arm/kernel/stacktrace.c

+1 −0
Original line number Original line Diff line number Diff line
@@ -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)

{

{