posix-timers: Introduce clock_posix_cpu (1976945e) · Commits · 戴 / test

The CLOCK_DISPATCH() macro is a horrible magic. We call common functions if a function pointer is not set. That's just backwards. To support dynamic file decriptor based clocks we need to cleanup that dispatch logic. Create a k_clock struct clock_posix_cpu which has all the posix-cpu-timer functions filled in. After the cleanup the functions can be made static. Signed-off-by:

Thomas Gleixner <tglx@linutronix.de> Acked-by:

John Stultz <johnstul@us.ibm.com> Tested-by:

Richard Cochran <richard.cochran@omicron.at> LKML-Reference: <20110201134417.841974553@linutronix.de>

include/linux/posix-timers.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -85,6 +85,8 @@ struct k_clock {
		struct itimerspec * cur_setting);
		};

		extern struct k_clock clock_posix_cpu;

		void register_posix_clock(const clockid_t clock_id, struct k_clock *new_clock);

		/* error handlers for timer_create, nanosleep and settime */

kernel/posix-cpu-timers.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -1604,6 +1604,18 @@ static long thread_cpu_nsleep_restart(struct restart_block *restart_block)
		return -EINVAL;
		}

		struct k_clock clock_posix_cpu = {
		.clock_getres = posix_cpu_clock_getres,
		.clock_set = posix_cpu_clock_set,
		.clock_get = posix_cpu_clock_get,
		.timer_create = posix_cpu_timer_create,
		.nsleep = posix_cpu_nsleep,
		.nsleep_restart = posix_cpu_nsleep_restart,
		.timer_set = posix_cpu_timer_set,
		.timer_del = posix_cpu_timer_del,
		.timer_get = posix_cpu_timer_get,
		};

		static __init int init_posix_cpu_timers(void)
		{
		struct k_clock process = {

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