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Nicolas Pitre
baa73d9e47
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 <[email protected]> Acked-by: Richard Cochran <[email protected]> Acked-by: Thomas Gleixner <[email protected]> Acked-by: John Stultz <[email protected]> Reviewed-by: Josh Triplett <[email protected]> Cc: Paul Bolle <[email protected]> Cc: [email protected] Cc: [email protected] Cc: Michal Marek <[email protected]> Cc: Edward Cree <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
21 lines
745 B
Makefile
21 lines
745 B
Makefile
obj-y += time.o timer.o hrtimer.o
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obj-y += timekeeping.o ntp.o clocksource.o jiffies.o timer_list.o
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obj-y += timeconv.o timecounter.o alarmtimer.o
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ifeq ($(CONFIG_POSIX_TIMERS),y)
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obj-y += posix-timers.o posix-cpu-timers.o posix-clock.o itimer.o
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else
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obj-y += posix-stubs.o
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endif
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obj-$(CONFIG_GENERIC_CLOCKEVENTS) += clockevents.o tick-common.o
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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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obj-$(CONFIG_GENERIC_SCHED_CLOCK) += sched_clock.o
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obj-$(CONFIG_TICK_ONESHOT) += tick-oneshot.o tick-sched.o
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obj-$(CONFIG_TIMER_STATS) += timer_stats.o
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obj-$(CONFIG_DEBUG_FS) += timekeeping_debug.o
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obj-$(CONFIG_TEST_UDELAY) += test_udelay.o
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