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selftests: Add clock-helpers.h

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Multiple selftests duplicate various clock-related functionality.
Add a new header to collect and deduplicate those.

Signed-off-by: Thomas Weißschuh (Schneider Electric) <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Acked-by: John Stultz <jstultz@google.com>
Link: https://patch.msgid.link/20260803-auxclock-nanosleep-prep-v2-6-910cbd485390@linutronix.de
This commit is contained in:
Thomas Weißschuh (Schneider Electric)
2026-08-03 12:04:37 +02:00
committed by Thomas Gleixner
parent 859b069ec5
commit 431012dd0a
1 changed files with 76 additions and 0 deletions
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76
tools/testing/selftests/clock-helpers.h Normal file
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __CLOCK_HELPERS_H
#define __CLOCK_HELPERS_H
#include <sys/types.h>
#include <time.h>
#define MSEC_PER_SEC 1000LL
#define USEC_PER_MSEC 1000LL
#define NSEC_PER_USEC 1000LL
#define NSEC_PER_MSEC 1000000LL
#define USEC_PER_SEC 1000000LL
#define NSEC_PER_SEC 1000000000LL
#define PSEC_PER_SEC 1000000000000LL
#define FSEC_PER_SEC 1000000000000000LL
#ifndef CLOCK_AUX
#define CLOCK_AUX 16
#endif
#ifndef MAX_AUX_CLOCKS
#define MAX_AUX_CLOCKS 8
#endif
#ifndef CLOCK_AUX_LAST
#define CLOCK_AUX_LAST (CLOCK_AUX + MAX_AUX_CLOCKS - 1)
#endif
__attribute__((unused))
static inline const char *clock_name(clockid_t clockid)
{
switch (clockid) {
case CLOCK_REALTIME:
return "CLOCK_REALTIME";
case CLOCK_MONOTONIC:
return "CLOCK_MONOTONIC";
case CLOCK_PROCESS_CPUTIME_ID:
return "CLOCK_PROCESS_CPUTIME_ID";
case CLOCK_THREAD_CPUTIME_ID:
return "CLOCK_THREAD_CPUTIME_ID";
case CLOCK_MONOTONIC_RAW:
return "CLOCK_MONOTONIC_RAW";
case CLOCK_REALTIME_COARSE:
return "CLOCK_REALTIME_COARSE";
case CLOCK_MONOTONIC_COARSE:
return "CLOCK_MONOTONIC_COARSE";
case CLOCK_BOOTTIME:
return "CLOCK_BOOTTIME";
case CLOCK_REALTIME_ALARM:
return "CLOCK_REALTIME_ALARM";
case CLOCK_BOOTTIME_ALARM:
return "CLOCK_BOOTTIME_ALARM";
case CLOCK_TAI:
return "CLOCK_TAI";
case CLOCK_AUX + 0:
return "CLOCK_AUX0";
case CLOCK_AUX + 1:
return "CLOCK_AUX1";
case CLOCK_AUX + 2:
return "CLOCK_AUX2";
case CLOCK_AUX + 3:
return "CLOCK_AUX3";
case CLOCK_AUX + 4:
return "CLOCK_AUX4";
case CLOCK_AUX + 5:
return "CLOCK_AUX5";
case CLOCK_AUX + 6:
return "CLOCK_AUX6";
case CLOCK_AUX + 7:
return "CLOCK_AUX7";
};
return "UNKNOWN_CLOCKID";
}
#endif /* __CLOCK_HELPERS_H */