diff options
author | Paul Burton <paul.burton@imgtec.com> | 2017-07-05 09:59:05 -0700 |
---|---|---|
committer | Ralf Baechle <ralf@linux-mips.org> | 2017-07-11 14:35:12 +0200 |
commit | d40e0d4fb5613099a58c95a9403f51b03e40e861 (patch) | |
tree | 6003ccc43fd05bcdbff3bb377041dadceff8fcfd /arch/mips/loongson64 | |
parent | e5f5a5b06e51a36f6ddf31a4a485358263953a3d (diff) | |
download | linux-d40e0d4fb5613099a58c95a9403f51b03e40e861.tar.gz linux-d40e0d4fb5613099a58c95a9403f51b03e40e861.tar.bz2 linux-d40e0d4fb5613099a58c95a9403f51b03e40e861.zip |
locking/qspinlock: Include linux/prefetch.h
kernel/locking/qspinlock.c makes use of prefetchw() but hasn't included
linux/prefetch.h up until now, instead relying upon indirect inclusion
of some header that defines prefetchw().
In the case of MIPS we generally obtain a definition of prefetchw() from
asm/processor.h, included by way of linux/mutex.h, but only for
configurations which select CONFIG_CPU_HAS_PREFETCH. For configurations
which don't this leaves prefetchw() undefined leading to the following
build failure:
CC kernel/locking/qspinlock.o
kernel/locking/qspinlock.c: In function ‘queued_spin_lock_slowpath’:
kernel/locking/qspinlock.c:549:4: error: implicit declaration of
function ‘prefetchw’ [-Werror=implicit-function-declaration]
prefetchw(next);
^~~~~~~~~
Fix this by including linux/prefetch.h in order to ensure that we get a
definition of prefetchw().
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/loongson64')
0 files changed, 0 insertions, 0 deletions