• Yunlong Song's avatar
    perf data: Support using -f to override perf.data file ownership for 'convert' · bd05954b
    Yunlong Song authored
    Enable perf data convert to use perf.data when it is not owned by
    current user or root.
    
    Example:
    
     # perf record ls
     # chown Yunlong.Song:Yunlong.Song perf.data
     # ls -al perf.data
     -rw------- 1 Yunlong.Song Yunlong.Song 28260 Apr  2 17:35 perf.data
     # id
     uid=0(root) gid=0(root) groups=0(root),64(pkcs11)
    
    Before this patch:
    
     # perf data convert --to-ctf=./ctf-data/
     File perf.data not owned by current user or root (use -f to override)
     # perf data convert --to-ctf=./ctf-data/ -f
       Error: unknown switch `f'
    
      usage: perf data convert [<options>]
    
         -v, --verbose         be more verbose
         -i, --input <file>    input file name
             --to-ctf ...      Convert to CTF format
    
    After this patch:
    
     # perf data convert --to-ctf=./ctf-data/
     File perf.data not owned by current user or root (use -f to override)
     # perf data convert --to-ctf=./ctf-data/ -f
     # ls ctf-data/
     metadata  perf_stream_0
    
    As shown above, the -f option really works now.
    Signed-off-by: default avatarYunlong Song <yunlong.song@huawei.com>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
    Cc: Wang Nan <wangnan0@huawei.com>
    Link: http://lkml.kernel.org/r/1427982439-27388-11-git-send-email-yunlong.song@huawei.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    bd05954b
data-convert-bt.c 20 KB