From: Dustin Brown Date: Mon, 7 Aug 2017 18:44:01 +0000 (+0100) Subject: ARM: 8691/1: Export save_stack_trace_tsk() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9a3dc3186fc3795e076a4122da9e0258651a9631;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git 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: Dustin Brown Signed-off-by: Russell King --- diff --git a/arch/arm/kernel/stacktrace.c b/arch/arm/kernel/stacktrace.c index 3a2fa203637a..65228bf4c6df 100644 --- a/arch/arm/kernel/stacktrace.c +++ b/arch/arm/kernel/stacktrace.c @@ -171,6 +171,7 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace) { __save_stack_trace(tsk, trace, 1); } +EXPORT_SYMBOL(save_stack_trace_tsk); void save_stack_trace(struct stack_trace *trace) {