ia64: vsyscall: Use seqcount instead of seqlock
authorThomas Gleixner <tglx@linutronix.de>
Tue, 28 Feb 2012 19:46:05 +0000 (19:46 +0000)
committerJohn Stultz <john.stultz@linaro.org>
Fri, 16 Mar 2012 01:17:59 +0000 (18:17 -0700)
commit74a622be3db2898251cb524d1edbeaea589f2723
treed54a6960bedd0176d7ff1f7dc3092df42d1917bd
parent2ab516575f2f273b19d95140d02c54612201e80a
ia64: vsyscall: Use seqcount instead of seqlock

The update of the vdso data happens under xtime_lock, so adding a
nested lock is pointless. Just use a seqcount to sync the readers.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
arch/ia64/kernel/asm-offsets.c
arch/ia64/kernel/fsys.S
arch/ia64/kernel/fsyscall_gtod_data.h
arch/ia64/kernel/time.c