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debug_core: stop rcu warnings on kernel resume

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When returning from the kernel debugger reset the rcu jiffies_stall
value to prevent the rcu stall detector from sending NMI events which
invoke a stack dump for each cpu in the system.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
This commit is contained in:
Jason Wessel 2010-08-13 12:44:04 -05:00
parent 16cdc628c3
commit fb70b5888b
1 changed files with 2 additions and 0 deletions
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2
kernel/debug/debug_core.c
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@ -47,6 +47,7 @@
#include <linux/pid.h> #include <linux/pid.h>
#include <linux/smp.h> #include <linux/smp.h>
#include <linux/mm.h> #include <linux/mm.h>
#include <linux/rcupdate.h>
#include <asm/cacheflush.h> #include <asm/cacheflush.h>
#include <asm/byteorder.h> #include <asm/byteorder.h>
@ -474,6 +475,7 @@ static void dbg_touch_watchdogs(void)
{ {
touch_softlockup_watchdog_sync(); touch_softlockup_watchdog_sync();
clocksource_touch_watchdog(); clocksource_touch_watchdog();
rcu_cpu_stall_reset();
} }
static int kgdb_cpu_enter(struct kgdb_state *ks, struct pt_regs *regs) static int kgdb_cpu_enter(struct kgdb_state *ks, struct pt_regs *regs)