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| author | Thomas Gleixner <tglx@linutronix.de> | 2018-09-17 15:45:44 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-10-05 00:00:27 +0300 |
| commit | 315f28fa3a7bfbbb6233d800dffa327e87f96129 (patch) | |
| tree | 6e93f0d9fb28a08d45ef4fe91d2940248f084078 | |
| parent | 3e89bf35ebf59c12e8c1476f6681fae0ebdcb2a7 (diff) | |
| download | linux-315f28fa3a7bfbbb6233d800dffa327e87f96129.tar.xz | |
x66/vdso: Add CLOCK_TAI support
With the storage array in place it's now trivial to support CLOCK_TAI in
the vdso. Extend the base time storage array and add the update code.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Matt Rickard <matt@softrans.com.au>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: devel@linuxdriverproject.org
Cc: virtualization@lists.linux-foundation.org
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Juergen Gross <jgross@suse.com>
Link: https://lkml.kernel.org/r/20180917130707.823878601@linutronix.de
| -rw-r--r-- | arch/x86/entry/vsyscall/vsyscall_gtod.c | 4 | ||||
| -rw-r--r-- | arch/x86/include/asm/vgtod.h | 4 |
2 files changed, 6 insertions, 2 deletions
diff --git a/arch/x86/entry/vsyscall/vsyscall_gtod.c b/arch/x86/entry/vsyscall/vsyscall_gtod.c index 31b9e5e0cfdf..cfcdba082feb 100644 --- a/arch/x86/entry/vsyscall/vsyscall_gtod.c +++ b/arch/x86/entry/vsyscall/vsyscall_gtod.c @@ -51,6 +51,10 @@ void update_vsyscall(struct timekeeper *tk) base->sec = tk->xtime_sec; base->nsec = tk->tkr_mono.xtime_nsec; + base = &vdata->basetime[CLOCK_TAI]; + base->sec = tk->xtime_sec + (s64)tk->tai_offset; + base->nsec = tk->tkr_mono.xtime_nsec; + base = &vdata->basetime[CLOCK_MONOTONIC]; base->sec = tk->xtime_sec + tk->wall_to_monotonic.tv_sec; nsec = tk->tkr_mono.xtime_nsec; diff --git a/arch/x86/include/asm/vgtod.h b/arch/x86/include/asm/vgtod.h index 10e534a1a51a..d17b092b9f1b 100644 --- a/arch/x86/include/asm/vgtod.h +++ b/arch/x86/include/asm/vgtod.h @@ -18,8 +18,8 @@ struct vgtod_ts { u64 nsec; }; -#define VGTOD_BASES (CLOCK_MONOTONIC_COARSE + 1) -#define VGTOD_HRES (BIT(CLOCK_REALTIME) | BIT(CLOCK_MONOTONIC)) +#define VGTOD_BASES (CLOCK_TAI + 1) +#define VGTOD_HRES (BIT(CLOCK_REALTIME) | BIT(CLOCK_MONOTONIC) | BIT(CLOCK_TAI)) #define VGTOD_COARSE (BIT(CLOCK_REALTIME_COARSE) | BIT(CLOCK_MONOTONIC_COARSE)) /* |