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cpupower: use man(1) when calling "cpupower help subcommand"

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Instead of printing something non-formatted to stdout, call
man(1) to show the man page for the proper subcommand.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
This commit is contained in:
Dominik Brodowski
2011-08-06 18:11:43 +02:00
parent 47c336307a
commit 498ca793d9
11 changed files with 86 additions and 228 deletions
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20
tools/power/cpupower/utils/cpupower-info.c
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@@ -16,31 +16,16 @@
#include "helpers/helpers.h"
#include "helpers/sysfs.h"
void info_help(void)
{
printf(_("Usage: cpupower info [ -b ] [ -m ] [ -s ]\n"));
printf(_("Options:\n"));
printf(_(" -b, --perf-bias Gets CPU's power vs performance policy on some\n"
" Intel models [0-15], see manpage for details\n"));
printf(_(" -m, --sched-mc Gets the kernel's multi core scheduler policy.\n"));
printf(_(" -s, --sched-smt Gets the kernel's thread sibling scheduler policy.\n"));
printf(_(" -h, --help Prints out this screen\n"));
printf(_("\nPassing no option will show all info, by default only on core 0\n"));
printf("\n");
}
static struct option set_opts[] = {
{ .name = "perf-bias", .has_arg = optional_argument, .flag = NULL, .val = 'b'},
{ .name = "sched-mc", .has_arg = optional_argument, .flag = NULL, .val = 'm'},
{ .name = "sched-smt", .has_arg = optional_argument, .flag = NULL, .val = 's'},
{ .name = "help", .has_arg = no_argument, .flag = NULL, .val = 'h'},
{ },
};
static void print_wrong_arg_exit(void)
{
printf(_("invalid or unknown argument\n"));
info_help();
exit(EXIT_FAILURE);
}
@@ -64,11 +49,8 @@ int cmd_info(int argc, char **argv)
textdomain(PACKAGE);
/* parameter parsing */
while ((ret = getopt_long(argc, argv, "msbh", set_opts, NULL)) != -1) {
while ((ret = getopt_long(argc, argv, "msb", set_opts, NULL)) != -1) {
switch (ret) {
case 'h':
info_help();
return 0;
case 'b':
if (params.perf_bias)
print_wrong_arg_exit();