Re: perf test vfs_getname failed
From: Arnaldo Carvalho de Melo
Date: Mon Oct 23 2017 - 10:24:18 EST
Em Mon, Oct 23, 2017 at 05:38:49PM +0800, Li Zhijian escreveu:
> Those cases can be passed on fedora-26 with the same kernel(and configuration) with rhel7.1
> [root@localhost perf]# ./perf test vfs_getname
> 60: Add vfs_getname probe to get syscall args filenames : Ok
> 61: Use vfs_getname probe to get syscall args filenames : Ok
> 62: Check open filename arg using perf trace + vfs_getname: Ok
>
> totally, i tested at 3 distro
> 1. fedora-26: OK
> 2. ubuntu 16.04: FAIL
> 3. rhel7.1 beta: FAIL
>
> Does it means that those cases are related to special distro(require special middle wares) ?
Nope, its supposed to work with all of them, I'll check and try to fix
it.
- Arnaldo
>
> Thanks
>
>
> On 10/19/2017 4:31 PM, Li Zhijian wrote:
> > Hi Arnaldo
> >
> > i encounter some problem when running perf test, the details arelike
> > below:
> >
> > -----------------------------
> >
> > [lizj@rhel71 perf]$ sudo ./perf test vfs_getname -v
> > 61: Add vfs_getname probe to get syscall args filenames :
> > --- start ---
> > test child forked, pid 5958
> > Failed to find 'result' in this function.
> > Error: Failed to add events.
> > test child finished with -1
> > ---- end ----
> > Add vfs_getname probe to get syscall args filenames: FAILED!
> > 62: Use vfs_getname probe to get syscall args filenames :
> > --- start ---
> > test child forked, pid 5979
> > Failed to find 'result' in this function.
> > Error: Failed to add events.
> > test child finished with -1
> > ---- end ----
> > Use vfs_getname probe to get syscall args filenames: FAILED!
> > 63: Check open filename arg using perf trace + vfs_getname:
> > --- start ---
> > test child forked, pid 6001
> > Failed to find 'result' in this function.
> > Error: Failed to add events.
> > test child finished with -1
> > ---- end ----
> > Check open filename arg using perf trace + vfs_getname: FAILED!
> > -----------------------------
> >
> > my environment:
> > 1. perf features
> > the enabled features are:
> > -----------------------------
> >
> > Auto-detecting system features:
> > ... dwarf: [ on ]
> > ... dwarf_getlocations: [ on ]
> > ... glibc: [ on ]
> > ... gtk2: [ on ]
> > ... libaudit: [ on ]
> > ... libbfd: [ on ]
> > ... libelf: [ on ]
> > ... libnuma: [ on ]
> > ... numa_num_possible_cpus: [ on ]
> > ... libperl: [ on ]
> > ... libpython: [ on ]
> > ... libslang: [ OFF ]
> > ... libcrypto: [ on ]
> > ... libunwind: [ on ]
> > ... libdw-dwarf-unwind: [ on ]
> > ... zlib: [ on ]
> > ... lzma: [ on ]
> > ... get_cpuid: [ on ]
> > ... bpf: [ on ]
> > -----------------------------
> > 2. host
> > [lizj@rhel71 perf]$ cat /etc/redhat-release
> > Red Hat Enterprise Linux Server release 7.1 Beta (Maipo)
> >
> > 3. kernel
> > [lizj@rhel71 perf]$ uname -a
> > Linux rhel71 4.14.0-rc1+ #2 SMP Wed Oct 18 23:49:30 EDT 2017 x86_64
> > x86_64 x86_64 GNU/Linux
> >
> > if i miss something, fell free to let me know :)
> >
> > Thanks
> >
> > Zhijian
> >
> >