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| author | Sinan Kaya <okaya@codeaurora.org> | 2018-04-03 08:55:03 -0400 |
|---|---|---|
| committer | James Hogan <jhogan@kernel.org> | 2018-04-12 23:01:58 +0100 |
| commit | f6b7aeee8f167409195fbf1364d02988fecad1d0 (patch) | |
| tree | fd7a5652e201f2a401ffdf57973f2e100a507fb1 /tools/perf/scripts/python/stackcollapse.py | |
| parent | a5075e6226c42a8e64ea1b862eec7747dc46cb32 (diff) | |
MIPS: io: Prevent compiler reordering writeX()
writeX() has strong ordering semantics with respect to memory updates.
In the absence of a write barrier or a compiler barrier, the compiler
can reorder register and memory update instructions. This breaks the
writeX() API.
Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/18997/
[jhogan@kernel.org: Tidy commit message]
Signed-off-by: James Hogan <jhogan@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions