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authorEric Dumazet <eric.dumazet@gmail.com>2010-05-06 22:07:48 -0700
committerDavid S. Miller <davem@davemloft.net>2010-05-06 22:07:48 -0700
commiteecfd7c4e36ff532d895885971d01d049bd3e014 (patch)
treef75ee9904f29f9fd8d5a019766e41d3c07066903 /net/core/skbuff.c
parent39e0786d3cf39c6d2f47b4818ae2da8b8ebc9ce2 (diff)
rps: Various optimizations
Introduce ____napi_schedule() helper for callers in irq disabled contexts. rps_trigger_softirq() becomes a leaf function. Use container_of() in process_backlog() instead of accessing per_cpu address. Use a custom inlined version of __napi_complete() in process_backlog() to avoid one locked instruction : only current cpu owns and manipulates this napi, and NAPI_STATE_SCHED is the only possible flag set on backlog. we can use a plain write instead of clear_bit(), and we dont need an smp_mb() memory barrier, since RPS is on, backlog is protected by a spinlock. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/skbuff.c')
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