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973725e4a5
(cherry pick from url https://patchwork.kernel.org/patch/10053549/) Add time() vdso support to match up with existing support in the x86's vdso. Currently benefitting arm and arm64 which uses the common vgettimeofday.c implementation. On arm provides about a ~14 fold improvement in speed over the straight syscall, and about a ~5 fold improvement in speed over an alternate library implementation that relies on the vdso call to gettimeofday to fulfill the request. We can provide __vdso_time even if we can not provide a speed enhanced __vdso_gettimeofday. Signed-off-by: Mark Salyzyn <salyzyn@android.com> Bug: 63737556 Bug: 20045882 Change-Id: I0bb3c6bafe57f9ed69350e2dd54edaae58316e8f Signed-off-by: khusika <khusikadhamar@gmail.com> Signed-off-by: azrim <mirzaspc@gmail.com>