linux-kernel - [PATCH 0/3] x86/vdso: Add support for CLOCK_MONOTONIC

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Message-Id: <20190411101205.10006-1-huw@codeweavers.com>
Date:   Thu, 11 Apr 2019 11:12:02 +0100
From:   Huw Davies <huw@...eweavers.com>
To:     linux kernel <linux-kernel@...r.kernel.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Andy Lutomirski <luto@...nel.org>
Subject: [PATCH 0/3] x86/vdso: Add support for CLOCK_MONOTONIC_RAW in the vDSO

This series adds support for the CLOCK_MONOTONIC_RAW clock in the x86
vDSO, thus decreasing its readout cost.  This is particularly useful
for Wine which needs to implement Win32 API clock functions whose
value does not get adjusted with adjtimex().

Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Andy Lutomirski <luto@...nel.org>

Huw Davies (3):
  x86/vdso: Remove unused 'mask' member
  x86/vdso: Allow clock specific mult and shift values
  x86/vdso: Add support for CLOCK_MONOTONIC_RAW in the vDSO

 arch/x86/entry/vdso/vclock_gettime.c    |  4 ++--
 arch/x86/entry/vsyscall/vsyscall_gtod.c | 15 ++++++++++++---
 arch/x86/include/asm/vgtod.h            | 10 +++++-----
 3 files changed, 19 insertions(+), 10 deletions(-)

-- 
2.17.1