From: "Hillf Danton" <hillf.zj@alibaba-inc.com>
To: "Daniel Thompson" <daniel.thompson@linaro.org>
Cc: "linux-kernel" <linux-kernel@vger.kernel.org>,
"Russell King" <rmk+kernel@arm.linux.org.uk>,
"Steven Rostedt" <rostedt@goodmis.org>
Subject: Re: [RESEND PATCH 4.0-rc5 v19 6/6] ARM: Add support for on-demand backtrace of other CPUs
Date: Wed, 08 Apr 2015 16:35:23 +0800 [thread overview]
Message-ID: <089201d071d6$f4eb8480$dec28d80$@alibaba-inc.com> (raw)
In-Reply-To: <089101d071d6$4ebe2a90$ec3a7fb0$@alibaba-inc.com>
>
> +void ipi_cpu_backtrace(struct pt_regs *regs)
> +{
> + int cpu = smp_processor_id();
> +
> + if (cpumask_test_cpu(cpu, to_cpumask(backtrace_mask))) {
> + printk_nmi_backtrace_this_cpu_begin();
> + pr_warn("FIQ backtrace for cpu %d\n", cpu);
> + if (regs != NULL)
> + show_regs(regs);
> + else
> + dump_stack();
Help more if we could print both register and stack info.
> + printk_nmi_backtrace_this_cpu_end();
> +
> + cpumask_clear_cpu(cpu, to_cpumask(backtrace_mask));
> + }
> +}
next parent reply other threads:[~2015-04-08 8:35 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <089101d071d6$4ebe2a90$ec3a7fb0$@alibaba-inc.com>
2015-04-08 8:35 ` Hillf Danton [this message]
2015-04-08 10:48 ` [RESEND PATCH 4.0-rc5 v19 6/6] ARM: Add support for on-demand backtrace of other CPUs Daniel Thompson
2015-03-24 16:53 [PATCH 4.0-rc5 v19 0/6] irq/arm: Implement arch_trigger_all_cpu_backtrace Daniel Thompson
2015-04-07 15:37 ` [RESEND PATCH " Daniel Thompson
2015-04-07 15:38 ` [RESEND PATCH 4.0-rc5 v19 6/6] ARM: Add support for on-demand backtrace of other CPUs Daniel Thompson
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