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powerpc: remove the last remnants of cputime_t

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cputime_t was a core kernel type, removed by commits
ed5c8c854f2b..b672592f0221. As explained in commit b672592f02
("sched/cputime: Remove generic asm headers"), the final cleanup
is for the arch to provide cputime_to_nsec[s](). Commit ade7667a98
("powerpc: Add cputime_to_nsecs()") did that, but justdidn't remove
the then-unused cputime_to_usecs(), cputime_t type, and associated
remnants.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221006105653.115829-1-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin 2022-10-06 20:56:53 +10:00 committed by Michael Ellerman
parent d90bb7b4fd
commit f985adaf2f
2 changed files with 3 additions and 37 deletions
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17
arch/powerpc/include/asm/cputime.h
View File

@ -21,23 +21,8 @@
#include <asm/param.h>
#include <asm/firmware.h>
typedef u64 __nocast cputime_t;
typedef u64 __nocast cputime64_t;
#define cmpxchg_cputime(ptr, old, new) cmpxchg(ptr, old, new)
#ifdef __KERNEL__
/*
* Convert cputime <-> microseconds
*/
extern u64 __cputime_usec_factor;
static inline unsigned long cputime_to_usecs(const cputime_t ct)
{
return mulhdu((__force u64) ct, __cputime_usec_factor);
}
#define cputime_to_nsecs(cputime) tb_to_ns((__force u64)cputime)
#define cputime_to_nsecs(cputime) tb_to_ns(cputime)
/*
* PPC64 uses PACA which is task independent for storing accounting data while

23
arch/powerpc/kernel/time.c
View File

@ -130,7 +130,7 @@ unsigned long tb_ticks_per_jiffy;
unsigned long tb_ticks_per_usec = 100; /* sane default */
EXPORT_SYMBOL(tb_ticks_per_usec);
unsigned long tb_ticks_per_sec;
EXPORT_SYMBOL(tb_ticks_per_sec); /* for cputime_t conversions */
EXPORT_SYMBOL(tb_ticks_per_sec); /* for cputime conversions */
DEFINE_SPINLOCK(rtc_lock);
EXPORT_SYMBOL_GPL(rtc_lock);
@ -150,21 +150,6 @@ EXPORT_SYMBOL_GPL(ppc_tb_freq);
bool tb_invalid;
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
/*
* Factor for converting from cputime_t (timebase ticks) to
* microseconds. This is stored as 0.64 fixed-point binary fraction.
*/
u64 __cputime_usec_factor;
EXPORT_SYMBOL(__cputime_usec_factor);
static void calc_cputime_factors(void)
{
struct div_result res;
div128_by_32(1000000, 0, tb_ticks_per_sec, &res);
__cputime_usec_factor = res.result_low;
}
/*
* Read the SPURR on systems that have it, otherwise the PURR,
* or if that doesn't exist return the timebase value passed in.
@ -369,10 +354,7 @@ void vtime_flush(struct task_struct *tsk)
acct->hardirq_time = 0;
acct->softirq_time = 0;
}
#else /* ! CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
#define calc_cputime_factors()
#endif
#endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
void __delay(unsigned long loops)
{
@ -914,7 +896,6 @@ void __init time_init(void)
tb_ticks_per_jiffy = ppc_tb_freq / HZ;
tb_ticks_per_sec = ppc_tb_freq;
tb_ticks_per_usec = ppc_tb_freq / 1000000;
calc_cputime_factors();
/*
* Compute scale factor for sched_clock.