On Fri, May 24, 2019 at 03:46:07PM -0300, Arnaldo Carvalho de Melo wrote: > Em Fri, May 24, 2019 at 03:17:17PM -0300, Arnaldo Carvalho de Melo escreveu: > > Em Fri, May 24, 2019 at 03:15:06PM -0300, Arnaldo Carvalho de Melo escreveu: > > > Em Wed, May 08, 2019 at 03:20:03PM +0200, Jiri Olsa escreveu: > > > > We mark the end of kernel based on the first module, > > > > but that could cover some bpf program maps. Reading > > > > _etext symbol if it's present to get precise kernel > > > > map end. > > > > > > Investigating... Have you run 'perf test' before hitting the send > > > button? :-) > > > > <SNIP> > > > > > [root@quaco c]# perf test -v 1 > > > 1: vmlinux symtab matches kallsyms : > > <SNIP> > > > --- start --- > > > ERR : 0xffffffff8cc00e41: __indirect_thunk_end not on kallsyms > > <SNIP> > > > test child finished with -1 > > > ---- end ---- > > > vmlinux symtab matches kallsyms: FAILED! > > > [root@quaco c]# > > > > So... > > > > [root@quaco c]# grep __indirect_thunk_end /proc/kallsyms > > ffffffff8cc00e41 T __indirect_thunk_end > > [root@quaco c]# grep -w _etext /proc/kallsyms > > ffffffff8cc00e41 T _etext > > [root@quaco c]# > > > > [root@quaco c]# grep -w ffffffff8cc00e41 /proc/kallsyms > > ffffffff8cc00e41 T _etext > > ffffffff8cc00e41 T __indirect_thunk_end > > [root@quaco c]# > > > > Lemme try to fix this. > > So, I got this right before your patch: > > commit 1d1c54c5bbf55256e691bedb47b0d14745043e80 > Author: Arnaldo Carvalho de Melo <a...@redhat.com> > Date: Fri May 24 15:39:00 2019 -0300 > > perf test vmlinux-kallsyms: Ignore aliases to _etext when searching on > kallsyms > > No need to search for aliases for the symbol that marks the end of the > kernel text segment, the following patch will make such symbols not to > be found when searching in the kallsyms maps causing this test to fail. > > So as a prep patch to avoid breaking bisection, ignore such symbols. > > Cc: Adrian Hunter <adrian.hun...@intel.com> > Cc: Alexander Shishkin <alexander.shish...@linux.intel.com> > Cc: Andi Kleen <a...@linux.intel.com> > Cc: Jiri Olsa <jo...@kernel.org> > Cc: Namhyung Kim <namhy...@kernel.org> > Cc: Peter Zijlstra <pet...@infradead.org> > Cc: Song Liu <songliubrav...@fb.com> > Cc: Stanislav Fomichev <s...@google.com> > Cc: Thomas Richter <tmri...@linux.ibm.com> > Link: > https://lkml.kernel.org/n/tip-qfwuih8cvmk9doh7k5k24...@git.kernel.org > Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
works for me Tested-by: Jiri Olsa <jo...@kernel.org> thanks, jirka
