diff options
| author | john stultz <johnstul@us.ibm.com> | 2007-02-16 01:28:21 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-16 08:14:00 -0800 |
| commit | 7460ed2844ffad7141e30271c0c3da8336e66014 (patch) | |
| tree | 4ae7f2ebf09b59f214d243d0f886fb2c4e7915e8 /arch/x86_64/kernel/hpet.c | |
| parent | 1489939f0ab64b96998e04068c516c39afe29654 (diff) | |
[PATCH] time: x86_64: re-enable vsyscall support for x86_64
Cleanup and re-enable vsyscall gettimeofday using the generic clocksource
infrastructure.
[akpm@osdl.org: cleanup]
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andi Kleen <ak@muc.de>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86_64/kernel/hpet.c')
| -rw-r--r-- | arch/x86_64/kernel/hpet.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/hpet.c b/arch/x86_64/kernel/hpet.c index c23738899ae..65a0edd71a1 100644 --- a/arch/x86_64/kernel/hpet.c +++ b/arch/x86_64/kernel/hpet.c @@ -458,6 +458,11 @@ static cycle_t read_hpet(void) return (cycle_t)readl(hpet_ptr); } +static cycle_t __vsyscall_fn vread_hpet(void) +{ + return readl((void __iomem *)fix_to_virt(VSYSCALL_HPET) + 0xf0); +} + struct clocksource clocksource_hpet = { .name = "hpet", .rating = 250, @@ -466,6 +471,7 @@ struct clocksource clocksource_hpet = { .mult = 0, /* set below */ .shift = HPET_SHIFT, .flags = CLOCK_SOURCE_IS_CONTINUOUS, + .vread = vread_hpet, }; static int __init init_hpet_clocksource(void) |