Re: [PATCH 1/2] sched/wait: Break up long wake list walk

Linus Torvalds writes: (Summary) wrote:

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The long wake ups are mostly on the same page when we do instrumentation Ok.
Ok.

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is collected by perf record -g -a -e probe:wake_up_page_bit -- sleep 10 It's actually not really wake_up_page_bit() that is all that interesting, it would be more interesting to see which path it is that *adds* the entries.
*adds* the entries.
So it's mainly wait_on_page_bit_common(), but also add_page_wait_queue(). Linus
Linus
Linus