| commit | 4f9d1382e6f80dcfa891b2c02d5a35c53be485f1 | [log] [tgz] |
|---|---|---|
| author | Christian Borntraeger <borntraeger@de.ibm.com> | Mon Nov 24 10:53:46 2014 +0100 |
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | Thu Dec 18 09:54:38 2014 +0100 |
| tree | d4d95efc68ca6661661e08fe78b1ff3538baa5de | |
| parent | e37c698270633327245beb0fbd8699db8a4b65b4 [diff] |
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>