diff options
| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2014-11-24 10:53:46 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2014-12-18 09:54:38 +0100 |
| commit | 4f9d1382e6f80dcfa891b2c02d5a35c53be485f1 (patch) | |
| tree | d4d95efc68ca6661661e08fe78b1ff3538baa5de /arch/sh/oprofile | |
| parent | mm: replace ACCESS_ONCE with READ_ONCE or barriers (diff) | |
| download | linux-4f9d1382e6f80dcfa891b2c02d5a35c53be485f1.tar.xz linux-4f9d1382e6f80dcfa891b2c02d5a35c53be485f1.zip | |
x86/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 'arch/sh/oprofile')
0 files changed, 0 insertions, 0 deletions