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authorBarry Song <song.bao.hua@hisilicon.com>2021-10-16 19:11:09 +0800
committerPeter Zijlstra <peterz@infradead.org>2021-12-07 15:14:10 +0100
commit2917406c352757642c3c1a13a4c99c96e6d22fde (patch)
tree5b3dc47b074fd18d268660b51b299eff8e92498a /drivers/net/netxen/netxen_nic_hdr.h
parentsched/fair: Fix per-CPU kthread and wakee stacking for asym CPU capacity (diff)
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sched/fair: Document the slow path and fast path in select_task_rq_fair
All People I know including myself took a long time to figure out that typical wakeup will always go to fast path and never go to slow path except WF_FORK and WF_EXEC. Vincent reminded me once in a linaro meeting and made me understand slow path won't happen for WF_TTWU. But my other friends repeatedly wasted a lot of time on testing this path like me before I reminded them. So obviously the code needs some document. Signed-off-by: Barry Song <song.bao.hua@hisilicon.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20211016111109.5559-1-21cnbao@gmail.com
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