perf tools: do not look at ./config for configuration

commit aba8d056078e47350d85b06a9cabd5afcc4b72ea upstream.

In addition to /etc/perfconfig and $HOME/.perfconfig, perf looks for
configuration in the file ./config, imitating git which looks at
$GIT_DIR/config.  If ./config is not a perf configuration file, it
fails, or worse, treats it as a configuration file and changes behavior
in some unexpected way.

"config" is not an unusual name for a file to be lying around and perf
does not have a private directory dedicated for its own use, so let's
just stop looking for configuration in the cwd.  Callers needing
context-sensitive configuration can use the PERF_CONFIG environment

Requested-by: Christian Ohm <>
Cc: Ben Hutchings <>
Cc: Christian Ohm <>
Cc: Ingo Molnar <>
Cc: Paul Mackerras <>
Cc: Peter Zijlstra <>
Signed-off-by: Jonathan Nieder <>
Signed-off-by: Arnaldo Carvalho de Melo <>
Signed-off-by: Greg Kroah-Hartman <>

1 file changed