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Commit 1976945e authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

posix-timers: Introduce clock_posix_cpu 



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: default avatarThomas Gleixner <tglx@linutronix.de>
Acked-by: default avatarJohn Stultz <johnstul@us.ibm.com>
Tested-by: default avatarRichard Cochran <richard.cochran@omicron.at>
LKML-Reference: <20110201134417.841974553@linutronix.de>
parent 2fd1f040

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 = {