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| author | Stefan Hajnoczi <stefanha@redhat.com> | 2014-12-02 11:23:15 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-06-05 17:10:00 +0200 |
| commit | 36546e5b803f6e363906607307f27c489441fd15 (patch) | |
| tree | ab898dc907aa2a93f39ec00117649bde2dd27e0a /arch_init.c | |
| parent | 9f02cfc84b85929947b32fe1674fbc6a429f332a (diff) | |
| download | focaccia-qemu-36546e5b803f6e363906607307f27c489441fd15.tar.gz focaccia-qemu-36546e5b803f6e363906607307f27c489441fd15.zip | |
bitmap: add atomic test and clear
The new bitmap_test_and_clear_atomic() function clears a range and returns whether or not the bits were set. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <1417519399-3166-3-git-send-email-stefanha@redhat.com> [Test before xchg; then a full barrier is needed at the end just like in the previous patch. The barrier can be avoided if we did at least one xchg. - Paolo] Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch_init.c')
0 files changed, 0 insertions, 0 deletions