linux-kernel - Build failures due to missing 'posix_timer

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Date:   Wed, 14 Dec 2016 06:44:10 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Nicolas Pitre <nico@...aro.org>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Build failures due to missing 'posix_timer_event'

avr32:allnoconfig:

kernel/built-in.o: In function `do_adjtimex':
(.text+0x1d748): undefined reference to `posix_timer_event'
make[1]: *** [vmlinux] Error 1

metag:allnoconfig:

kernel/built-in.o: In function `alarm_handle_timer':
alarmtimer.c:(.text.alarm_handle_timer+0x38): undefined reference to `posix_timer_event'

openrisc:allnoconfig:

kernel/built-in.o: In function `alarm_handle_timer':
alarmtimer.c:(.text+0x3fca4): undefined reference to `posix_timer_event'

unicore32:allnoconfig:

kernel/built-in.o: In function `alarm_handle_timer':
memremap.c:(.text+0x31c1c): undefined reference to `posix_timer_event'

Since I don't run allnoconfig builds for all architectures, I strongly suspect
that more are affected.

Looking into alarmtimer.c, with seems to call posix_timer_event() unconditionally,
I don't entirely understand how this can work in the first place. Maybe I am missing
something, though.

Guenter