On Mon, 29 Jan 2024 16:01:25 -0800 Linus Torvalds <torva...@linux-foundation.org> wrote:
> I'll go see what's up with the "create it again" case - I don't > immediately see what's wrong. Interesting. I added a printk in the lookup, and just did this: # cd /sys/kernel/tracing # ls events/kprobes And it showed that it tried to see if "kprobes" existed in the lookup. Which it did not because I haven't created any kprobes yet. Then I did: # echo 'p:sched schedule' >> /sys/kernel/tracing/kprobe_events # ls -l events/kprobes/ ls: cannot access 'events/kprobes/': No such file or directory Where it should now exist but doesn't. But the lookup code never triggered. If the lookup fails, does it cache the result? -- Steve
