On Wed, Feb 16, 2022 at 01:33:18PM -0500, Steven Rostedt wrote: > On Wed, 16 Feb 2022 10:09:14 -0800 > Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > > > Byungchul, could you fix those two issues? Some of your reports may > > well be entirely valid, but the hard-to-read hex offsets and the > > knowledge that at least some of them are confused about how > > prepare_to_wait -> wait actually works makes the motivation to look at > > the details much less.. > > Hi Byungchul, > > I'm not sure what your tool is using to attach to the kernel to analyze the > events (perhaps tracepoints?). But you can have the prepare_to_wait event > just flag the task is about to wait, and then attach to the schedule > (sched_switch) event to denote that it actually waited. > > Of course have the finish_wait() clear the flag. (Sorry for late reply, which was because of my email client issue.) Thank you for the hint. However, unfortunately, I didn't use tracepoint for that. However, the key idea is the thing that I should take! Thanks a lot! Thanks, Byungchul > > -- Steve
