diff options
| author | Ben Hutchings <ben@decadent.org.uk> | 2017-10-04 05:46:14 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-11-30 11:40:40 +0300 |
| commit | c792238027157d0fc6a80a8ea1b9d73443459d75 (patch) | |
| tree | c68ee61ffc28fe7eb8548507ab51fa8938a03831 /crypto/crypto_user.c | |
| parent | 8177aa54c509056c599e7cf1c7e91630814686e6 (diff) | |
| download | linux-c792238027157d0fc6a80a8ea1b9d73443459d75.tar.xz | |
MIPS: cmpxchg64() and HAVE_VIRT_CPU_ACCOUNTING_GEN don't work for 32-bit SMP
commit a3f143106596d739e7fbc4b84c96b1475247d876 upstream.
__cmpxchg64_local_generic() is atomic only w.r.t tasks and interrupts
on the same CPU (that's what the 'local' means). We can't use it to
implement cmpxchg64() in SMP configurations.
So, for 32-bit SMP configurations:
- Don't define cmpxchg64()
- Don't enable HAVE_VIRT_CPU_ACCOUNTING_GEN, which requires it
Fixes: e2093c7b03c1 ("MIPS: Fall back to generic implementation of ...")
Fixes: bb877e96bea1 ("MIPS: Add support for full dynticks CPU time accounting")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Deng-Cheng Zhu <dengcheng.zhu@mips.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17413/
Signed-off-by: James Hogan <jhogan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'crypto/crypto_user.c')
0 files changed, 0 insertions, 0 deletions