| commit | b538e53ee7e8b9e2920d3286b480276cef209fd4 | |
| author | Alex Williamson <alex.williamson@redhat.com> | |
| Fri, 5 Nov 2010 22:01:29 +0000 (5 16:01 -0600) | ||
| committer | Anthony Liguori <aliguori@us.ibm.com> | |
| Tue, 16 Nov 2010 15:31:18 +0000 (16 09:31 -0600) | ||
| tree | 75fa15ef85234efa3cab5e0c4f7cd5ffdfd7bb9b | treesnapshot (tar.gz zip) |
| parent | 4cff0a5994d0300e6e77e90d3354aa517a120539 | commitdiff |
apic: Don't iterate past last used apic
local_apics are allocated sequentially and never removed, so
we can stop any iterations that go to MAX_APICS as soon as we
hit the first NULL. Looking at a small guest running a virtio-net
workload with oprofile, this drops apic_get_delivery_bitmask()
from #3 in the profile to down in the noise.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
local_apics are allocated sequentially and never removed, so
we can stop any iterations that go to MAX_APICS as soon as we
hit the first NULL. Looking at a small guest running a virtio-net
workload with oprofile, this drops apic_get_delivery_bitmask()
from #3 in the profile to down in the noise.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
| hw/apic.c | diffblobblamehistory |