| Message ID | 1426795613-135746-1-git-send-email-david.ahern@oracle.com |
|---|---|
| State | Accepted |
| Delegated to: | David Miller |
| Headers | show |
From: David Ahern <david.ahern@oracle.com> Date: Thu, 19 Mar 2015 16:06:53 -0400 > With the increase in number of CPUs calls to functions that dump > output to console (e.g., arch_trigger_all_cpu_backtrace) can take > a long time to complete. If IRQs are disabled eventually the NMI > watchdog kicks in and creates more havoc. Avoid by telling the NMI > watchdog everything is ok. > > Signed-off-by: David Ahern <david.ahern@oracle.com> Applied, thanks. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c index 0be7bf978cb1..46a59643bb1c 100644 --- a/arch/sparc/kernel/process_64.c +++ b/arch/sparc/kernel/process_64.c @@ -287,6 +287,8 @@ void arch_trigger_all_cpu_backtrace(bool include_self) printk(" TPC[%lx] O7[%lx] I7[%lx] RPC[%lx]\n", gp->tpc, gp->o7, gp->i7, gp->rpc); } + + touch_nmi_watchdog(); } memset(global_cpu_snapshot, 0, sizeof(global_cpu_snapshot)); @@ -362,6 +364,8 @@ static void pmu_snapshot_all_cpus(void) (cpu == this_cpu ? '*' : ' '), cpu, pp->pcr[0], pp->pcr[1], pp->pcr[2], pp->pcr[3], pp->pic[0], pp->pic[1], pp->pic[2], pp->pic[3]); + + touch_nmi_watchdog(); } memset(global_cpu_snapshot, 0, sizeof(global_cpu_snapshot));
With the increase in number of CPUs calls to functions that dump output to console (e.g., arch_trigger_all_cpu_backtrace) can take a long time to complete. If IRQs are disabled eventually the NMI watchdog kicks in and creates more havoc. Avoid by telling the NMI watchdog everything is ok. Signed-off-by: David Ahern <david.ahern@oracle.com> --- arch/sparc/kernel/process_64.c | 4 ++++ 1 file changed, 4 insertions(+)