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clock: add k_cycle_get_64

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This change adds `k_cycle_get_64()` on platforms that
support a 64-bit cycle counter.

The interface functions `arch_k_cycle_get_64()` and
`sys_clock_cycle_get_64()` are also introduced.

Fixes #39934

Signed-off-by: Christopher Friedt <chrisfriedt@gmail.com>
This commit is contained in:
Christopher Friedt 2021-10-29 20:10:35 -04:00
commit 918a574c88
25 changed files with 205 additions and 4 deletions
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21
include/kernel.h
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@ -1639,6 +1639,27 @@ static inline uint32_t k_cycle_get_32(void)
return arch_k_cycle_get_32();
}
/**
* @brief Read the 64-bit hardware clock.
*
* This routine returns the current time in 64-bits, as measured by the
* system's hardware clock, if available.
*
* @see CONFIG_TIMER_HAS_64BIT_CYCLE_COUNTER
*
* @return Current hardware clock up-counter (in cycles).
*/
static inline uint64_t k_cycle_get_64(void)
{
if (!IS_ENABLED(CONFIG_TIMER_HAS_64BIT_CYCLE_COUNTER)) {
__ASSERT(0, "64-bit cycle counter not enabled on this platform. "
"See CONFIG_TIMER_HAS_64BIT_CYCLE_COUNTER");
return 0;
}
return arch_k_cycle_get_64();
}
/**
* @}
*/