Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757156Ab1BANwJ (ORCPT ); Tue, 1 Feb 2011 08:52:09 -0500 Received: from www.tglx.de ([62.245.132.106]:47265 "EHLO www.tglx.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757141Ab1BANwG (ORCPT ); Tue, 1 Feb 2011 08:52:06 -0500 Message-Id: <20110201134418.903604289@linutronix.de> User-Agent: quilt/0.48-1 Date: Tue, 01 Feb 2011 13:51:58 -0000 From: Thomas Gleixner To: LKML Cc: John Stultz , Richard Cochran , Ingo Molnar , Peter Zijlstra Subject: [patch 15/28] posix-timers: Convert timer_create() to clockid_to_kclock() References: <20110201134320.688829863@linutronix.de> Content-Disposition: inline; filename=posix-timers-convert-clock-timer-create.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4331 Lines: 133 Setup timer_create for CLOCK_MONOTONIC and CLOCK_REALTIME kclocks and remove the no_timer_create() implementation. Signed-off-by: Thomas Gleixner Cc: John Stultz Cc: Richard Cochran --- kernel/posix-timers.c | 40 +++++++++++++++------------------------- 1 file changed, 15 insertions(+), 25 deletions(-) Index: linux-2.6-tip/kernel/posix-timers.c =================================================================== --- linux-2.6-tip.orig/kernel/posix-timers.c +++ linux-2.6-tip/kernel/posix-timers.c @@ -146,6 +146,7 @@ static struct k_clock posix_clocks[MAX_C */ static int common_nsleep(const clockid_t, int flags, struct timespec *t, struct timespec __user *rmtp); +static int common_timer_create(struct k_itimer *new_timer); static void common_timer_get(struct k_itimer *, struct itimerspec *); static int common_timer_set(struct k_itimer *, int, struct itimerspec *, struct itimerspec *); @@ -175,25 +176,6 @@ static inline void unlock_timer(struct k ? (*posix_clocks[clock].call) arglist : common_##call arglist)) /* - * Default clock hook functions when the struct k_clock passed - * to register_posix_clock leaves a function pointer null. - * - * The function common_CALL is the default implementation for - * the function pointer CALL in struct k_clock. - */ - -static int common_timer_create(struct k_itimer *new_timer) -{ - hrtimer_init(&new_timer->it.real.timer, new_timer->it_clock, 0); - return 0; -} - -static int no_timer_create(struct k_itimer *new_timer) -{ - return -EOPNOTSUPP; -} - -/* * Return nonzero if we know a priori this clockid_t value is bogus. */ static inline int invalid_clockid(const clockid_t which_clock) @@ -269,27 +251,26 @@ static __init int init_posix_timers(void .clock_set = posix_clock_realtime_set, .nsleep = common_nsleep, .nsleep_restart = hrtimer_nanosleep_restart, + .timer_create = common_timer_create, }; struct k_clock clock_monotonic = { .clock_getres = hrtimer_get_res, .clock_get = posix_ktime_get_ts, .nsleep = common_nsleep, .nsleep_restart = hrtimer_nanosleep_restart, + .timer_create = common_timer_create, }; struct k_clock clock_monotonic_raw = { .clock_getres = hrtimer_get_res, .clock_get = posix_get_monotonic_raw, - .timer_create = no_timer_create, }; struct k_clock clock_realtime_coarse = { .clock_getres = posix_get_coarse_res, .clock_get = posix_get_realtime_coarse, - .timer_create = no_timer_create, }; struct k_clock clock_monotonic_coarse = { .clock_getres = posix_get_coarse_res, .clock_get = posix_get_monotonic_coarse, - .timer_create = no_timer_create, }; register_posix_clock(CLOCK_REALTIME, &clock_realtime); @@ -523,19 +504,28 @@ static struct k_clock *clockid_to_kclock return &posix_clocks[id]; } +static int common_timer_create(struct k_itimer *new_timer) +{ + hrtimer_init(&new_timer->it.real.timer, new_timer->it_clock, 0); + return 0; +} + /* Create a POSIX.1b interval timer. */ SYSCALL_DEFINE3(timer_create, const clockid_t, which_clock, struct sigevent __user *, timer_event_spec, timer_t __user *, created_timer_id) { + struct k_clock *kc = clockid_to_kclock(which_clock); struct k_itimer *new_timer; int error, new_timer_id; sigevent_t event; int it_id_set = IT_ID_NOT_SET; - if (invalid_clockid(which_clock)) + if (!kc) return -EINVAL; + if (!kc->timer_create) + return -EOPNOTSUPP; new_timer = alloc_posix_timer(); if (unlikely(!new_timer)) @@ -597,7 +587,7 @@ SYSCALL_DEFINE3(timer_create, const cloc goto out; } - error = CLOCK_DISPATCH(which_clock, timer_create, (new_timer)); + error = kc->timer_create(new_timer); if (error) goto out; @@ -607,7 +597,7 @@ SYSCALL_DEFINE3(timer_create, const cloc spin_unlock_irq(¤t->sighand->siglock); return 0; - /* + /* * In the case of the timer belonging to another task, after * the task is unlocked, the timer is owned by the other task * and may cease to exist at any time. Don't use or modify -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/