On 24.08.10 12:22:52, Cyrill Gorcunov wrote:
quoted text > Btw, guys, I fail to see how new nmi_watchdog work, we have
> default_do_nmi
> if (!(reason & 0xc0)) {
> if (notify_die(DIE_NMI, "nmi", regs, reason, 2, SIGINT) == == NOTIFY_STOP)
> return
> if (nmi_watchdog_tick(regs, reason))
> return
>
> but perf_event_nmi_handler returns NOTIFY_STOP when watchdog is perf event
> and nmi_watchdog_tick _never_ called, or (most probably) I miss something?
The watchdog is disabled during profiling (perf and oprofile) by
calling disable_lapic_nmi_watchdog().
-Robert
--
Advanced Micro Devices, Inc.
Operating System Research Center
--
unsubscribe notice To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
majordomo@vger.kernel.org
More majordomo info at
http://vger.kernel.org/majordomo-info.html
Please read the FAQ at
http://www.tux.org/lkml/ Messages in current thread:
Re: [PATCH -v3] perf, x86: try to handle unknown nmis with ... , Robert Richter , (Tue Aug 24, 10:09 am)
