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| author | Nicolas Pitre <nico@cam.org> | 2005-12-19 22:20:51 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-12-19 22:20:51 +0000 |
| commit | 7c612bfd4ed3064fd48a4877a114c8186547367b (patch) | |
| tree | bd307ea5bf9c0ad16ad1a590490d9095107d35fc /arch/mips/oprofile | |
| parent | 567bd98017d9c9f2ac1c148ddc78c062e8abd398 (diff) | |
| download | kernel_samsung_smdk4412-7c612bfd4ed3064fd48a4877a114c8186547367b.zip kernel_samsung_smdk4412-7c612bfd4ed3064fd48a4877a114c8186547367b.tar.gz kernel_samsung_smdk4412-7c612bfd4ed3064fd48a4877a114c8186547367b.tar.bz2 | |
[ARM] 3210/1: add missing memory barrier helper for NPTL support
Patch from Nicolas Pitre
Strictly speaking, the NPTL kernel helpers are required for pre ARMv6
only. They are available on ARMv6+ as well for obvious compatibility
reasons. However there are cases where extra memory barriers are needed
when using an SMP ARMv6 machine but not on pre-ARMv6.
This patch adds a memory barrier kernel helper that glibc can use as
needed for pre-ARMv6 binaries to be forward compatible with an SMP
kernel on ARMv6, as well as the necessary dmb instructions to the
cmpxchg helper.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Acked-by: Daniel Jacobowitz <dan@codesourcery.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/mips/oprofile')
0 files changed, 0 insertions, 0 deletions