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authorAvi Kivity <avi@redhat.com>2010-05-10 13:08:26 +0300
committerAvi Kivity <avi@redhat.com>2010-08-01 10:47:06 +0300
commit0719837c0832a7b305e42327caa7d330462360ea (patch)
tree73f574529aa588d5270da0a9cf048a65e863ba93 /virt
parenta8eeb04a44dd6dc4c8158953d9bae48849c9a188 (diff)
downloadlinux-0719837c0832a7b305e42327caa7d330462360ea.tar.bz2
KVM: Reduce atomic operations on vcpu->requests
Usually the vcpu->requests bitmap is sparse, so a test_and_clear_bit() for each request generates a large number of unneeded atomics if a bit is set. Replace with a separate test/clear sequence. This is safe since there is no clear_bit() outside the vcpu thread. Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'virt')
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