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Groups > linux.kernel > #1344901
| From | Sergey Senozhatsky <sergey.senozhatsky@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] printk/nmi: restore printk_func in nmi_panic |
| Date | 2016-02-27 04:40 +0100 |
| Message-ID | <r6DTz-5aO-9@gated-at.bofh.it> (permalink) |
| References | <r6hq2-5F3-11@gated-at.bofh.it> <r6s25-4LU-9@gated-at.bofh.it> <r6CNP-4m4-1@gated-at.bofh.it> <r6DAd-53s-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On (02/27/16 12:09), Sergey Senozhatsky wrote: > On (02/27/16 11:19), Sergey Senozhatsky wrote: > [..] > > > I think about a compromise. We should try to get the messages > > > out only when kdump is not enabled. > > > > can we zap_locks() if we are on nmi_panic()->panic()->console_flush_on_panic() path? > > console_flush_on_panic() is happening after we send out smp_send_stop(). > > can something like this do the trick? hm, no. it can't. I forgot to move printk_nmi_exit() from nmi_panic() to panic(). so it should have been: panic() ... printk_nmi_exit() console_flush_on_panic() __zap_locks() printk_nmi_flush() console_unlock() but this __zap_locks() can _in theory_ race with irq_work->printk_nmi_flush(). so we need something more than this... -ss
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[PATCH] printk/nmi: restore printk_func in nmi_panic Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-02-26 04:40 +0100
Re: [PATCH] printk/nmi: restore printk_func in nmi_panic Petr Mladek <pmladek@suse.com> - 2016-02-26 16:00 +0100
Re: [PATCH] printk/nmi: restore printk_func in nmi_panic Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2016-02-27 03:30 +0100
Re: [PATCH] printk/nmi: restore printk_func in nmi_panic Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2016-02-27 04:20 +0100
Re: [PATCH] printk/nmi: restore printk_func in nmi_panic Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2016-02-27 04:40 +0100
Re: [PATCH] printk/nmi: restore printk_func in nmi_panic Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2016-02-28 05:00 +0100
Re: [PATCH] printk/nmi: restore printk_func in nmi_panic Petr Mladek <pmladek@suse.com> - 2016-02-29 11:40 +0100
Re: [PATCH] printk/nmi: restore printk_func in nmi_panic Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-02-29 12:20 +0100
Re: [PATCH] printk/nmi: restore printk_func in nmi_panic Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2016-03-01 10:30 +0100
Re: [PATCH] printk/nmi: restore printk_func in nmi_panic Petr Mladek <pmladek@suse.com> - 2016-03-01 12:10 +0100
Re: [PATCH] printk/nmi: restore printk_func in nmi_panic Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2016-03-01 14:20 +0100
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