Eunbong Song 856839b768 MIPS: Add arch_trigger_all_cpu_backtrace() function ... Currently, arch_trigger_all_cpu_backtrace() is defined in only x86 and sparc which have an NMI. But in case of softlockup, it could be possible to dump backtrace of all cpus. and this could be helpful for debugging. for example, if system has 2 cpus. CPU 0 CPU 1 acquire read_lock() try to do write_lock() ,,, missing read_unlock() In this case, softlockup will occur becasuse CPU 0 does not call read_unlock(). And dump_stack() print only backtrace for "CPU 0". If CPU1's backtrace is printed it's very helpful. [ralf@linux-mips.org: Fixed whitespace and formatting issues.] Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/8200/		2014-11-24 07:44:49 +01:00
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asm	MIPS: Add arch_trigger_all_cpu_backtrace() function	2014-11-24 07:44:49 +01:00
uapi/asm	MIPS: Wire up bpf syscall.	2014-10-27 03:37:42 +01:00