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perf config: Export the perf_config_from_file() function

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We'll use it to ask for extra config files to be loaded, profile like
stuff that will be used first to make 'perf trace' mimic 'strace' output
via a 'perf strace' command that just sets up 'perf trace' output.

At some point it'll be used for regression tests, where we'll run some
simple commands like:

  perf strace ls > perf-strace.output
  strace ls > strace.output

And then do some mutable syscall arg aware diff like tool to deal with
arguments for things like mmap, that change at each execution, to be
first ignored and then properly tracked when used accoss multiple
syscalls.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2020-10-13 17:03:19 -03:00
parent 79373082fa
commit 79bbbabd22
2 changed files with 3 additions and 1 deletions
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2
tools/perf/util/config.c
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@ -489,7 +489,7 @@ int perf_default_config(const char *var, const char *value,
return 0;
}
static int perf_config_from_file(config_fn_t fn, const char *filename, void *data)
int perf_config_from_file(config_fn_t fn, const char *filename, void *data)
{
int ret;
FILE *f = fopen(filename, "r");

2
tools/perf/util/config.h
View File

@ -26,6 +26,8 @@ struct perf_config_set {
extern const char *config_exclusive_filename;
typedef int (*config_fn_t)(const char *, const char *, void *);
int perf_config_from_file(config_fn_t fn, const char *filename, void *data);
int perf_default_config(const char *, const char *, void *);
int perf_config(config_fn_t fn, void *);
int perf_config_int(int *dest, const char *, const char *);