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author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-04-19 09:07:33 +0400 |
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committer | David S. Miller <davem@davemloft.net> | 2010-04-20 00:20:34 +0400 |
commit | 88751275b8e867d756e4f86ae92afe0232de129f (patch) | |
tree | 011913d98eb65f5e90981da0275c2f5a07c2bee1 /tools/perf/util/levenshtein.c | |
parent | a03b1a5c95e8bcb07512122995bbf5bd3c39f2b9 (diff) | |
download | linux-88751275b8e867d756e4f86ae92afe0232de129f.tar.xz |
rps: shortcut net_rps_action()
net_rps_action() is a bit expensive on NR_CPUS=64..4096 kernels, even if
RPS is not active.
Tom Herbert used two bitmasks to hold information needed to send IPI,
but a single LIFO list seems more appropriate.
Move all RPS logic into net_rps_action() to cleanup net_rx_action() code
(remove two ifdefs)
Move rps_remote_softirq_cpus into softnet_data to share its first cache
line, filling an existing hole.
In a future patch, we could call net_rps_action() from process_backlog()
to make sure we send IPI before handling this cpu backlog.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/util/levenshtein.c')
0 files changed, 0 insertions, 0 deletions