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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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5
drivers/timer/apic_tsc.c
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@ -97,6 +97,11 @@ uint32_t sys_clock_cycle_get_32(void)
return (uint32_t) rdtsc();
}
uint64_t sys_clock_cycle_get_64(void)
{
return rdtsc();
}
static inline uint32_t timer_irq(void)
{
/* The Zephyr APIC API is... idiosyncratic. The timer is a