Em Thu, Jan 03, 2019 at 12:12:05PM +0100, Jiri Olsa escreveu: > On Thu, Jan 03, 2019 at 03:40:45PM +0800, Jin Yao wrote: > > We hit a perf stat issue by using following script. > > > > #!/bin/bash > > > > sleep 1000 & > > exec perf stat -a -e cycles -I1000 -- sleep 5 > > > > Since "perf stat" is launched by exec, so the "sleep 1000" would be > > the child process of "perf stat". The wait4() will not return because > > it's waiting for the child process "sleep 1000" to be end. So perf > > stat doesn't return even 5s passed. > > > > This patch lets the perf stat return when the specified child process > > is end (in this case, specified child process is "sleep 5"). > > > > Signed-off-by: Jin Yao <[email protected]> > > Reviewed-by: Jiri Olsa <[email protected]>
Thanks, tested and applied. - Arnaldo
