posix-timers: Make them configurable
Some embedded systems have no use for them. This removes about
25KB from the kernel binary size when configured out.
Corresponding syscalls are routed to a stub logging the attempt to
use those syscalls which should be enough of a clue if they were
disabled without proper consideration. They are: timer_create,
timer_gettime: timer_getoverrun, timer_settime, timer_delete,
clock_adjtime, setitimer, getitimer, alarm.
The clock_settime, clock_gettime, clock_getres and clock_nanosleep
syscalls are replaced by simple wrappers compatible with CLOCK_REALTIME,
CLOCK_MONOTONIC and CLOCK_BOOTTIME only which should cover the vast
majority of use cases with very little code.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: John Stultz <john.stultz@linaro.org>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Cc: Paul Bolle <pebolle@tiscali.nl>
Cc: linux-kbuild@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: Michal Marek <mmarek@suse.com>
Cc: Edward Cree <ecree@solarflare.com>
Link: http://lkml.kernel.org/r/1478841010-28605-7-git-send-email-nicolas.pitre@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-11-11 12:10:10 +07:00
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obj-y += time.o timer.o hrtimer.o
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2012-10-31 13:27:25 +07:00
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obj-y += timekeeping.o ntp.o clocksource.o jiffies.o timer_list.o
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posix-timers: Make them configurable
Some embedded systems have no use for them. This removes about
25KB from the kernel binary size when configured out.
Corresponding syscalls are routed to a stub logging the attempt to
use those syscalls which should be enough of a clue if they were
disabled without proper consideration. They are: timer_create,
timer_gettime: timer_getoverrun, timer_settime, timer_delete,
clock_adjtime, setitimer, getitimer, alarm.
The clock_settime, clock_gettime, clock_getres and clock_nanosleep
syscalls are replaced by simple wrappers compatible with CLOCK_REALTIME,
CLOCK_MONOTONIC and CLOCK_BOOTTIME only which should cover the vast
majority of use cases with very little code.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: John Stultz <john.stultz@linaro.org>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Cc: Paul Bolle <pebolle@tiscali.nl>
Cc: linux-kbuild@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: Michal Marek <mmarek@suse.com>
Cc: Edward Cree <ecree@solarflare.com>
Link: http://lkml.kernel.org/r/1478841010-28605-7-git-send-email-nicolas.pitre@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-11-11 12:10:10 +07:00
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obj-y += timeconv.o timecounter.o alarmtimer.o
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ifeq ($(CONFIG_POSIX_TIMERS),y)
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obj-y += posix-timers.o posix-cpu-timers.o posix-clock.o itimer.o
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else
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obj-y += posix-stubs.o
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endif
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2007-02-16 16:28:00 +07:00
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2015-03-25 19:05:19 +07:00
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obj-$(CONFIG_GENERIC_CLOCKEVENTS) += clockevents.o tick-common.o
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2014-02-09 13:02:22 +07:00
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ifeq ($(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST),y)
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obj-y += tick-broadcast.o
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obj-$(CONFIG_TICK_ONESHOT) += tick-broadcast-hrtimer.o
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endif
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2013-06-02 13:39:40 +07:00
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obj-$(CONFIG_GENERIC_SCHED_CLOCK) += sched_clock.o
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2015-03-25 19:05:19 +07:00
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obj-$(CONFIG_TICK_ONESHOT) += tick-oneshot.o tick-sched.o
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2013-05-22 12:32:14 +07:00
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obj-$(CONFIG_DEBUG_FS) += timekeeping_debug.o
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2014-08-05 01:30:56 +07:00
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obj-$(CONFIG_TEST_UDELAY) += test_udelay.o
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