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| author | Peter Zijlstra <[email protected]> | 2016-12-09 08:30:11 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2017-01-14 10:31:50 +0000 |
| commit | 9e3d6223d2093a8903c8f570a06284453ee59944 (patch) | |
| tree | f6010d541488db907e3fbf0ab56d595694b12c79 /lib/timerqueue.c | |
| parent | Merge branch 'for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/gi... (diff) | |
| download | kernel-9e3d6223d2093a8903c8f570a06284453ee59944.tar.gz kernel-9e3d6223d2093a8903c8f570a06284453ee59944.zip | |
math64, timers: Fix 32bit mul_u64_u32_shr() and friends
It turns out that while GCC-4.4 manages to generate 32x32->64 mult
instructions for the 32bit mul_u64_u32_shr() code, any GCC after that
fails horribly.
Fix this by providing an explicit mul_u32_u32() function which can be
architcture provided.
Reported-by: Chris Metcalf <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Acked-by: Chris Metcalf <[email protected]> [for tile]
Cc: Christopher S. Hall <[email protected]>
Cc: David Gibson <[email protected]>
Cc: John Stultz <[email protected]>
Cc: Laurent Vivier <[email protected]>
Cc: Liav Rehana <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Parit Bhargava <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Richard Cochran <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'lib/timerqueue.c')
0 files changed, 0 insertions, 0 deletions