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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-10-04 11:23:10 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-11-28 15:54:26 -0800
commitdac95906003fec1b4801115830cc14ec61c74960 (patch)
tree1f506ddfa870a4cae4e0e51714a18209bd5bf235 /kernel/torture.c
parent4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323 (diff)
torture: Suppress CPU stall warnings during shutdown ftrace dump
The torture_shutdown() function directly invokes ftrace_dump(), which can result in RCU CPU stall warnings when the ftrace buffer is large, which it usually is. This commit therefore invoks rcu_ftrace_dump() in place of ftrace_dump(), suppressing RCU CPU stall warnings during this time. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/torture.c')
-rw-r--r--kernel/torture.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/torture.c b/kernel/torture.c
index 637e172835d8..52781e838541 100644
--- a/kernel/torture.c
+++ b/kernel/torture.c
@@ -47,6 +47,7 @@
#include <linux/ktime.h>
#include <asm/byteorder.h>
#include <linux/torture.h>
+#include "rcu/rcu.h"
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Paul E. McKenney <paulmck@us.ibm.com>");
@@ -500,7 +501,7 @@ static int torture_shutdown(void *arg)
torture_shutdown_hook();
else
VERBOSE_TOROUT_STRING("No torture_shutdown_hook(), skipping.");
- ftrace_dump(DUMP_ALL);
+ rcu_ftrace_dump(DUMP_ALL);
kernel_power_off(); /* Shut down the system. */
return 0;
}

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