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| author | Richard Cochran <richardcochran@gmail.com> | 2011-02-01 13:52:26 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-02-02 15:28:19 +0100 |
| commit | f1f1d5ebd10ffa4242bce7a90a56a222d6b7bc77 (patch) | |
| tree | ca04ea979512e0037c52bca855dbf050b1b08360 /include/linux/syscalls.h | |
| parent | 65f5d80bdf83ec0d7f3887db10153bf3f36ed73c (diff) | |
| download | blackbird-op-linux-f1f1d5ebd10ffa4242bce7a90a56a222d6b7bc77.tar.gz blackbird-op-linux-f1f1d5ebd10ffa4242bce7a90a56a222d6b7bc77.zip | |
posix-timers: Introduce a syscall for clock tuning.
A new syscall is introduced that allows tuning of a POSIX clock. The
new call, clock_adjtime, takes two parameters, the clock ID and a
pointer to a struct timex. Any ADJTIMEX(2) operation may be requested
via this system call, but various POSIX clocks may or may not support
tuning.
[ tglx: Adapted to the posix-timer cleanup series. Avoid copy_to_user
in the error case ]
Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Acked-by: John Stultz <johnstul@us.ibm.com>
LKML-Reference: <20110201134419.869804645@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/syscalls.h')
| -rw-r--r-- | include/linux/syscalls.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 18cd0684fc4e..bfacab921239 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -311,6 +311,8 @@ asmlinkage long sys_clock_settime(clockid_t which_clock, const struct timespec __user *tp); asmlinkage long sys_clock_gettime(clockid_t which_clock, struct timespec __user *tp); +asmlinkage long sys_clock_adjtime(clockid_t which_clock, + struct timex __user *tx); asmlinkage long sys_clock_getres(clockid_t which_clock, struct timespec __user *tp); asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags, |
