On 4/10/25 2:05 PM, Steven Rostedt wrote: > I think the best thing to do is to add trace events in all areas that enter > and exit the kernel normally (where noinstr is turned off). There's already > one for page faults on entry. It's been on my todo list to add one for page > fault exit (as I do care for how long they last. > > I believe the irq vectors also have entry and exits trace events. > > What else is missing? > > -- Steve
Just found out that the exit tracepoints for syscalls aren't always exactly preceding the exit to userspace. The kernel can still spend quite some time in task_work_run after the tracepoints are triggered. Has that bothered you before? -- Junxuan
