| commit | 027a8c7e6067a1bcdef6775d1b1c08729dfbae51 | |
| author | Chris Wright <chrisw@sous-sol.org> | |
| Tue, 26 Sep 2006 06:32:23 +0000 (25 23:32 -0700) | ||
| committer | Linus Torvalds <torvalds@g5.osdl.org> | |
| Tue, 26 Sep 2006 15:48:55 +0000 (26 08:48 -0700) | ||
| tree | 8c791bb8820d6c0734aded634a045369dd3347cc | treesnapshot (tar.gz zip) |
| parent | 05f4a3ec94281347e05c81eafefcfe5ea545c94c | commitdiff |
[PATCH] x86: implement always-locked bit ops, for memory shared with an SMP hypervisor
Add "always lock'd" implementations of set_bit, clear_bit and change_bit and
the corresponding test_and_ functions. Also add "always lock'd"
implementation of cmpxchg. These give guaranteed strong synchronisation and
are required for non-SMP kernels running on an SMP hypervisor.
Signed-off-by: Ian Pratt <ian.pratt@xensource.com>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add "always lock'd" implementations of set_bit, clear_bit and change_bit and
the corresponding test_and_ functions. Also add "always lock'd"
implementation of cmpxchg. These give guaranteed strong synchronisation and
are required for non-SMP kernels running on an SMP hypervisor.
Signed-off-by: Ian Pratt <ian.pratt@xensource.com>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| include/asm-i386/sync_bitops.h | [new file with mode: 0644] | blob |
| include/asm-i386/system.h | diffblobblamehistory |