On Fri, Dec 13, 2013 at 12:32 PM, Vipul Jain <[email protected]> wrote:
> > > > On Fri, Dec 13, 2013 at 6:30 AM, <[email protected]> wrote: > >> On Thu, 12 Dec 2013 16:45:32 -0800, Vipul Jain said: >> >> > I would like to enable softlockup and hardlockup option in Linux kernel >> > and would like to test it to make sure that when soft and hard lockup >> > condition arises we do see kernel taking configured action. Hence was >> > wondering if there is any tool to do the same (basically injecting the >> > errors). >> >> Build your kernel with CONFIG_BOOTPARAM_HARDLOCKUP_PANIC and/or >> CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC and then stick an infinite loop >> somewhere in the kernel. See lib/Kconfig.debug under 'Debug Lockups and >> Hangs'. >> > > Hi Valids, > > I am able to configure the kernel with soft and hard lockup flags but now > I would like to generate and hard and soft lockup event and verify it and > was wondering if we have any tool in place that I can use, if not, any > guidance of how to go about testing it will be great. > > Regards, > Vipul. > Hi Valids, I did enable below flags but not sure if the softlockup and hardlockup detection mechanism is running on kernel so I added printk statements in kernel/watchdog.c but I don't see any prints in dmesg just wondering if you can help me to know why I don't see any prints in dmesg CONFIG_LOCKUP_DETECTOR=y CONFIG_HARDLOCKUP_DETECTOR=y Regards, Vipul.
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