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Re: [PATCH 17/30] tracing: Improve panic/die notifiers
- To: Steven Rostedt <rostedt@xxxxxxxxxxx>
- From: "Guilherme G. Piccoli" <gpiccoli@xxxxxxxxxx>
- Date: Fri, 29 Apr 2022 11:44:43 -0300
- Cc: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxx>, akpm@xxxxxxxxxxxxxxxxxxxx, bhe@xxxxxxxxxx, pmladek@xxxxxxxx, kexec@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, bcm-kernel-feedback-list@xxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-alpha@xxxxxxxxxxxxxxx, linux-edac@xxxxxxxxxxxxxxx, linux-hyperv@xxxxxxxxxxxxxxx, linux-leds@xxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxxx, linux-parisc@xxxxxxxxxxxxxxx, linux-pm@xxxxxxxxxxxxxxx, linux-remoteproc@xxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-tegra@xxxxxxxxxxxxxxx, linux-um@xxxxxxxxxxxxxxxxxxx, linux-xtensa@xxxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, openipmi-developer@xxxxxxxxxxxxxxxxxxxxx, rcu@xxxxxxxxxxxxxxx, sparclinux@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, x86@xxxxxxxxxx, kernel-dev@xxxxxxxxxx, kernel@xxxxxxxxxxxx, halves@xxxxxxxxxxxxx, fabiomirmar@xxxxxxxxx, alejandro.j.jimenez@xxxxxxxxxx, andriy.shevchenko@xxxxxxxxxxxxxxx, arnd@xxxxxxxx, bp@xxxxxxxxx, corbet@xxxxxxx, d.hatayama@xxxxxxxxxxxxxx, dave.hansen@xxxxxxxxxxxxxxx, dyoung@xxxxxxxxxx, feng.tang@xxxxxxxxx, gregkh@xxxxxxxxxxxxxxxxxxx, mikelley@xxxxxxxxxxxxx, hidehiro.kawai.ez@xxxxxxxxxxx, jgross@xxxxxxxx, john.ogness@xxxxxxxxxxxxx, keescook@xxxxxxxxxxxx, luto@xxxxxxxxxx, mhiramat@xxxxxxxxxx, mingo@xxxxxxxxxx, paulmck@xxxxxxxxxx, peterz@xxxxxxxxxxxxx, senozhatsky@xxxxxxxxxxxx, stern@xxxxxxxxxxxxxxxxxxx, tglx@xxxxxxxxxxxxx, vgoyal@xxxxxxxxxx, vkuznets@xxxxxxxxxx, will@xxxxxxxxxx
- Delivery-date: Fri, 29 Apr 2022 14:45:38 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 29/04/2022 10:56, Steven Rostedt wrote:
> [...]
> No. The fallthrough keyword is only needed when there's code between case
> labels. As it is very common to list multiple cases for the same code path.
> That is:
>
> case DIE_OOPS:
> case PANIC_NOTIFIER:
> do_dump = 1;
> break;
>
> Does not need a fall through label, as there's no code between the DIE_OOPS
> and the PANIC_NOTIFIER. But if you had:
>
> case DIE_OOPS:
> x = true;
> case PANIC_NOTIFIER:
> do_dump = 1;
> break;
>
> Then you do.
>
> -- Steve
Thanks a bunch for the clarification, changed that for V2 =)
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