FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2024-12-23 18:07:03 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

perf config: Add support for getting config key-value pairs

Browse Source 
Add a functionality getting specific config key-value pairs.
For the syntax examples,

    perf config [<file-option>] [section.name ...]

e.g. To query config items 'report.queue-size' and 'report.children', do

    # perf config report.queue-size report.children

Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Nambong Ha <over3025@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: Wookje Kwon <aweee0@gmail.com>
Link: http://lkml.kernel.org/r/1478241862-31230-2-git-send-email-treeze.taeung@gmail.com
[ Combined patch with docs update with this one ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Taeung Song 2016-11-04 15:44:17 +09:00 committed by Arnaldo Carvalho de Melo
parent 8c9c3d2f95
commit 909236083e
2 changed files with 55 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
tools/perf/Documentation/perf-config.txt
View File

@ -8,6 +8,8 @@ perf-config - Get and set variables in a configuration file.
SYNOPSIS
--------
[verse]
'perf config' [<file-option>] [section.name ...]
or
'perf config' [<file-option>] -l | --list
DESCRIPTION
@ -118,6 +120,22 @@ Given a $HOME/.perfconfig like this:
children = true
group = true
To query the record mode of call graph, do
% perf config call-graph.record-mode
If you want to know multiple config key/value pairs, you can do like
% perf config report.queue-size call-graph.order report.children
To query the config value of sort order of call graph in user config file (i.e. `~/.perfconfig`), do
% perf config --user call-graph.sort-order
To query the config value of buildid directory in system config file (i.e. `$(sysconf)/perfconfig`), do
% perf config --system buildid.dir
Variables
~~~~~~~~~

40
tools/perf/builtin-config.c
View File

@ -17,7 +17,7 @@
static bool use_system_config, use_user_config;
static const char * const config_usage[] = {
"perf config [<file-option>] [options]",
"perf config [<file-option>] [options] [section.name ...]",
NULL
};
@ -33,6 +33,36 @@ static struct option config_options[] = {
OPT_END()
};
static int show_spec_config(struct perf_config_set *set, const char *var)
{
struct perf_config_section *section;
struct perf_config_item *item;
if (set == NULL)
return -1;
perf_config_items__for_each_entry(&set->sections, section) {
if (prefixcmp(var, section->name) != 0)
continue;
perf_config_items__for_each_entry(&section->items, item) {
const char *name = var + strlen(section->name) + 1;
if (strcmp(name, item->name) == 0) {
char *value = item->value;
if (value) {
printf("%s=%s\n", var, value);
return 0;
}
}
}
}
return 0;
}
static int show_config(struct perf_config_set *set)
{
struct perf_config_section *section;
@ -54,7 +84,7 @@ static int show_config(struct perf_config_set *set)
int cmd_config(int argc, const char **argv, const char *prefix __maybe_unused)
{
int ret = 0;
int i, ret = 0;
struct perf_config_set *set;
char *user_config = mkpath("%s/.perfconfig", getenv("HOME"));
@ -100,7 +130,11 @@ int cmd_config(int argc, const char **argv, const char *prefix __maybe_unused)
}
break;
default:
usage_with_options(config_usage, config_options);
if (argc)
for (i = 0; argv[i]; i++)
ret = show_spec_config(set, argv[i]);
else
usage_with_options(config_usage, config_options);
}
perf_config_set__delete(set);