Messages in this thread | | | Date | Mon, 30 Oct 2017 15:25:18 +0000 | From | Will Deacon <> | Subject | Re: [PATCH v2 10/10] arm+arm64: vdso: Add support for CLOCK_BOOTTIME |
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Hi Mark,
On Thu, Oct 12, 2017 at 04:01:45PM -0700, Mark Salyzyn wrote: > Add a case for CLOCK_BOOTTIME as it is popular for measuring > relative time on systems expected to suspend() or hibernate(). > > Signed-off-by: Mark Salyzyn <salyzyn@android.com> > > v2: rebased and changed from 3/3 to 10/10, fortified commit message. > --- > arch/arm/include/asm/vdso_datapage.h | 1 + > arch/arm/kernel/vdso.c | 1 + > arch/arm/vdso/vgettimeofday.c | 56 ++++++++++++++++++++++++++++++++++ > arch/arm64/include/asm/vdso_datapage.h | 1 + > arch/arm64/kernel/vdso.c | 1 + > 5 files changed, 60 insertions(+)
Can you elaborate a bit on the use-case for CLOCK_BOOTTIME, please, so that we can justify accelerating it in the vDSO?
Thanks,
Will
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