Messages in this thread | | | From | "Rafael J. Wysocki" <> | Date | Fri, 2 Mar 2018 10:12:01 +0100 | Subject | Re: [PATCH] PM / wakeup: use seq_open() to show wakeup stats |
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On Fri, Mar 2, 2018 at 10:05 AM, Pavel Machek <pavel@ucw.cz> wrote: > On Fri 2018-03-02 13:01:00, Ganesh Mahendran wrote: >> single_open() interface requires that the whole output must >> fit into a single buffer. This will lead to timeout when >> system memory is not in a good situation. >> >> This patch use seq_open() to show wakeup stats. This method >> need only one page, so timeout will not be observed. > > Can the rcu_read_unlock be delayed arbitrarily by userland code? > > Is that ok with RCU?
No, it isn't. :-)
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