[PATCH] panic: remove redundant panic-cpu backtrace

[Sergey Senozhatsky]

SYS_INFO_ALL_CPU_BT sends NMI backtrace request to
all CPUs, which dumps an extra backtrace on panic CPU.
Exclude panic CPU from SYS_INFO_ALL_CPU_BT cpu-mask.

Signed-off-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
---
 kernel/panic.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/panic.c b/kernel/panic.c
index 27747cecb1af..c08f2695cf42 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -335,9 +335,11 @@ void check_panic_on_warn(const char *origin)
 static void panic_other_cpus_shutdown(bool crash_kexec)
 {
 	if (panic_print & SYS_INFO_ALL_CPU_BT) {
+		unsigned int this_cpu = raw_smp_processor_id();
+
 		/* Temporary allow non-panic CPUs to write their backtraces. */
 		panic_triggering_all_cpu_backtrace = true;
-		trigger_all_cpu_backtrace();
+		trigger_allbutcpu_cpu_backtrace(this_cpu);
 		panic_triggering_all_cpu_backtrace = false;
 	}
 
-- 
2.50.1.565.gc32cd1483b-goog