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| author |   Christian Borntraeger <borntraeger@de.ibm.com> | 2014-11-25 11:44:26 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2014-12-18 09:54:40 +0100 |
| commit | 488beef1440e845751365202faace2465840ea98 (patch) | |
| tree | f1ef574626d0253813e9436fe7a114cf48af19a5 /Makefile | |
| parent | arm64/spinlock: Replace ACCESS_ONCE READ_ONCE (diff) | |
| download | linux-dev-488beef1440e845751365202faace2465840ea98.tar.xz linux-dev-488beef1440e845751365202faace2465840ea98.zip | |
arm/spinlock: Replace ACCESS_ONCE with READ_ONCE
ACCESS_ONCE does not work reliably on non-scalar types. For
example gcc 4.6 and 4.7 might remove the volatile tag for such
accesses during the SRA (scalar replacement of aggregates) step
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145)
Change the spinlock code to replace ACCESS_ONCE with READ_ONCE.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to '')
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