Messages in this thread | | | From | Arnd Bergmann <> | Date | Tue, 30 Jan 2018 14:35:23 +0100 | Subject | Re: [PATCH v2] kdb: use ktime_get_mono_fast_ns() instead of ktime_get_ts() |
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On Mon, Jan 29, 2018 at 3:22 AM, Baolin Wang <baolin.wang@linaro.org> wrote: > The kdb code will print the monotonic time by ktime_get_ts(), but > the ktime_get_ts() will be protected by a sequence lock, that will > introduce one deadlock risk if the lock was already held in the > context from which we entered the debugger. > > Thus we can use the ktime_get_mono_fast_ns() to get the monotonic > time, which is NMI safe access to clock monotonic. Moreover we can > remove the 'struct timespec', which is not y2038 safe. > > Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
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