From mboxrd@z Thu Jan 1 00:00:00 1970 From: Guilherme G. Piccoli Date: Tue, 17 May 2022 13:45:51 -0300 Subject: [PATCH 21/30] panic: Introduce the panic pre-reboot notifier list In-Reply-To: References: <20220427224924.592546-1-gpiccoli@igalia.com> <20220427224924.592546-22-gpiccoli@igalia.com> <63a74b56-89ef-8d1f-d487-cdb986aab798@igalia.com> Message-ID: <599b72f6-76a4-8e6d-5432-56fb1ffd7e0b@igalia.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: kexec@lists.infradead.org On 17/05/2022 11:11, Petr Mladek wrote: > [...] >>> Then notifiers could make an informed choice on whether to deep dive to >>> get all the possible details (when there is no kdump) or just skim the high >>> level stuff (to maximize chance of getting a successful kdump). >>> >>> -Tony >> >> Good idea Tony! What if I wire a kexec_crash_loaded() in the notifier? > > I like this idea. > > One small problem is that kexec_crash_loaded() has valid result > only under kexec_mutex. On the other hand, it should stay true > once loaded so that the small race window should be innocent. > >> With that, are you/Petr/Dinh OK in moving it for the info list? > > Sounds good to me. > > Best Regards, > Petr Perfect, I'll do that for V2 then =) Tony / Dinh - can I just *skip* this notifier *if kdump* is set or else we run the code as-is? Does that make sense to you? I'll postpone it to run almost in the end of info list (last position is for panic_print). Thanks, Guilherme