[34-longterm 164/179] perf tools: do not look at ./config for configuration

From: Paul Gortmaker
Date: Mon May 14 2012 - 22:29:13 EST

From: Jonathan Nieder <jrnieder@xxxxxxxxx>

This is a commit scheduled for the next v2.6.34 longterm release.
If you see a problem with using this for longterm, please comment.

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 <chr.ohm@xxxxxxx>
Cc: 632923@xxxxxxxxxxxxxxx
Cc: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Cc: Christian Ohm <chr.ohm@xxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/r/20110805165838.GA7237@xxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Jonathan Nieder <jrnieder@xxxxxxxxx>
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>
tools/perf/util/config.c | 7 -------
1 file changed, 7 deletions(-)

diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 8784649..1720d01 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -416,7 +416,6 @@ int perf_config_global(void)
int perf_config(config_fn_t fn, void *data)
int ret = 0, found = 0;
- char *repo_config = NULL;
const char *home = NULL;

/* Setting $PERF_CONFIG makes perf read _only_ the given config file. */
@@ -438,12 +437,6 @@ int perf_config(config_fn_t fn, void *data)

- repo_config = perf_pathdup("config");
- if (!access(repo_config, R_OK)) {
- ret += perf_config_from_file(fn, repo_config, data);
- found += 1;
- }
- free(repo_config);
if (found == 0)
return -1;
return ret;

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