On Fri, 1 Jul 2016 10:51:04 -0300 Arnaldo Carvalho de Melo <a...@kernel.org> wrote:
> Em Fri, Jul 01, 2016 at 05:03:26PM +0900, Masami Hiramatsu escreveu: > > From: Masami Hiramatsu <masami.hiramatsu...@hitachi.com> > > > > perf probe --list shows all cached probes when --cache > > is given. Each caches are shown with on which binary that > > probed. e.g. > > ----- > > # perf probe --cache vfs_read \$params > > This one works: > > # perf probe --cache vfs_read \$params > Added new event: > probe:vfs_read (on vfs_read with $params) > > You can now use it in all perf tools, such as: > > perf record -e probe:vfs_read -aR sleep 1 > > # > > > # perf probe --cache -x /lib64/libc-2.17.so getaddrinfo \$params > > But this one doesn't and provides a funny message: > > [root@jouet perf]# perf probe --cache -x /lib64/libc-2.23.so getaddrinfo > \$params > Failed to write event: Invalid argument > Please upgrade your kernel to at least 3.14 to have access to feature $params > Error: Failed to add events. Ah, OK, $params requires debuginfo. It this error message is not correct. I'll send a fix soon. Thanks!! -- Masami Hiramatsu <mhira...@kernel.org>
