Re: [PATCH RESEND v1 1/4] lib/vdso: Mark do_hres_timens() and do_coarse_timens() __always_inline()
From: Thomas Gleixner <hidden>
Date: 2021-04-12 12:47:54
Also in:
linux-arch, lkml
On Wed, Mar 31 2021 at 16:48, Christophe Leroy wrote:
In the same spirit as commit c966533f8c6c ("lib/vdso: Mark do_hres()
and do_coarse() as __always_inline"), mark do_hres_timens() and
do_coarse_timens() __always_inline.
The measurement below in on a non timens process, ie on the fastest path.
On powerpc32, without the patch:
clock-gettime-monotonic-raw: vdso: 1155 nsec/call
clock-gettime-monotonic-coarse: vdso: 813 nsec/call
clock-gettime-monotonic: vdso: 1076 nsec/call
With the patch:
clock-gettime-monotonic-raw: vdso: 1100 nsec/call
clock-gettime-monotonic-coarse: vdso: 667 nsec/call
clock-gettime-monotonic: vdso: 1025 nsec/call
Signed-off-by: Christophe Leroy <redacted>Reviewed-by: Thomas Gleixner <redacted>