Messages in this thread | | | Date | Tue, 12 Mar 2019 11:58:47 +0900 | From | Sergey Senozhatsky <> | Subject | Re: [RFC PATCH v1 19/25] printk: introduce emergency messages |
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On (03/08/19 11:31), Petr Mladek wrote: > Great catch! > > I think that it is doable to guard the list using RCU.
I think console_sem is more than just list lock.
E.g. fb_flashcursor() - console_sem protects framebuffer from concurrent modifications. And many other examples.
I think the last time we talked about it (two+ years ago) we counted 5 or 7 (don't remember exactly) different things which console_sem does.
-ss
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