Contributors: 5
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Jiri Olsa |
448 |
97.39% |
2 |
33.33% |
| Peter Zijlstra |
6 |
1.30% |
1 |
16.67% |
| Ingo Molnar |
4 |
0.87% |
1 |
16.67% |
| Greg Kroah-Hartman |
1 |
0.22% |
1 |
16.67% |
| Josh Poimboeuf |
1 |
0.22% |
1 |
16.67% |
| Total |
460 |
|
6 |
|
// SPDX-License-Identifier: GPL-2.0
#include <subcmd/parse-options.h>
#include <stdio.h>
#include <time.h>
#include <strings.h>
#include <linux/time64.h>
#include "debug.h"
#include "clockid.h"
#include "record.h"
struct clockid_map {
const char *name;
int clockid;
};
#define CLOCKID_MAP(n, c) \
{ .name = n, .clockid = (c), }
#define CLOCKID_END { .name = NULL, }
/*
* Add the missing ones, we need to build on many distros...
*/
#ifndef CLOCK_MONOTONIC_RAW
#define CLOCK_MONOTONIC_RAW 4
#endif
#ifndef CLOCK_BOOTTIME
#define CLOCK_BOOTTIME 7
#endif
#ifndef CLOCK_TAI
#define CLOCK_TAI 11
#endif
static const struct clockid_map clockids[] = {
/* available for all events, NMI safe */
CLOCKID_MAP("monotonic", CLOCK_MONOTONIC),
CLOCKID_MAP("monotonic_raw", CLOCK_MONOTONIC_RAW),
/* available for some events */
CLOCKID_MAP("realtime", CLOCK_REALTIME),
CLOCKID_MAP("boottime", CLOCK_BOOTTIME),
CLOCKID_MAP("tai", CLOCK_TAI),
/* available for the lazy */
CLOCKID_MAP("mono", CLOCK_MONOTONIC),
CLOCKID_MAP("raw", CLOCK_MONOTONIC_RAW),
CLOCKID_MAP("real", CLOCK_REALTIME),
CLOCKID_MAP("boot", CLOCK_BOOTTIME),
CLOCKID_END,
};
static int get_clockid_res(clockid_t clk_id, u64 *res_ns)
{
struct timespec res;
*res_ns = 0;
if (!clock_getres(clk_id, &res))
*res_ns = res.tv_nsec + res.tv_sec * NSEC_PER_SEC;
else
pr_warning("WARNING: Failed to determine specified clock resolution.\n");
return 0;
}
int parse_clockid(const struct option *opt, const char *str, int unset)
{
struct record_opts *opts = (struct record_opts *)opt->value;
const struct clockid_map *cm;
const char *ostr = str;
if (unset) {
opts->use_clockid = 0;
return 0;
}
/* no arg passed */
if (!str)
return 0;
/* no setting it twice */
if (opts->use_clockid)
return -1;
opts->use_clockid = true;
/* if its a number, we're done */
if (sscanf(str, "%d", &opts->clockid) == 1)
return get_clockid_res(opts->clockid, &opts->clockid_res_ns);
/* allow a "CLOCK_" prefix to the name */
if (!strncasecmp(str, "CLOCK_", 6))
str += 6;
for (cm = clockids; cm->name; cm++) {
if (!strcasecmp(str, cm->name)) {
opts->clockid = cm->clockid;
return get_clockid_res(opts->clockid,
&opts->clockid_res_ns);
}
}
opts->use_clockid = false;
ui__warning("unknown clockid %s, check man page\n", ostr);
return -1;
}
const char *clockid_name(clockid_t clk_id)
{
const struct clockid_map *cm;
for (cm = clockids; cm->name; cm++) {
if (cm->clockid == clk_id)
return cm->name;
}
return "(not found)";
}