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authorToyo Abe <toyoa@mvista.com>2006-09-29 05:00:28 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-29 12:18:15 -0400
commit1711ef3866b0360e102327389fe4b76c849bbe83 (patch)
treeb74a2cb6167840563d450859a571d6685966b771 /kernel/posix-timers.c
parent9c4751fd0eab5b8ebbfafb28cbcc8e03b0da5933 (diff)
[PATCH] posix-timers: Fix clock_nanosleep() doesn't return the remaining time in compatibility mode
The clock_nanosleep() function does not return the time remaining when the sleep is interrupted by a signal. This patch creates a new call out, compat_clock_nanosleep_restart(), which handles returning the remaining time after a sleep is interrupted. This patch revives clock_nanosleep_restart(). It is now accessed via the new call out. The compat_clock_nanosleep_restart() is used for compatibility access. Since this is implemented in compatibility mode the normal path is virtually unaffected - no real performance impact. Signed-off-by: Toyo Abe <toyoa@mvista.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/posix-timers.c')
-rw-r--r--kernel/posix-timers.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
index ac6dc874442..e5ebcc1ec3a 100644
--- a/kernel/posix-timers.c
+++ b/kernel/posix-timers.c
@@ -973,3 +973,24 @@ sys_clock_nanosleep(const clockid_t which_clock, int flags,
973 return CLOCK_DISPATCH(which_clock, nsleep, 973 return CLOCK_DISPATCH(which_clock, nsleep,
974 (which_clock, flags, &t, rmtp)); 974 (which_clock, flags, &t, rmtp));
975} 975}
976
977/*
978 * nanosleep_restart for monotonic and realtime clocks
979 */
980static int common_nsleep_restart(struct restart_block *restart_block)
981{
982 return hrtimer_nanosleep_restart(restart_block);
983}
984
985/*
986 * This will restart clock_nanosleep. This is required only by
987 * compat_clock_nanosleep_restart for now.
988 */
989long
990clock_nanosleep_restart(struct restart_block *restart_block)
991{
992 clockid_t which_clock = restart_block->arg0;
993
994 return CLOCK_DISPATCH(which_clock, nsleep_restart,
995 (restart_block));
996}