linux_dsm_epyc7002/include/linux/cputime.h

#ifndef __LINUX_CPUTIME_H
#define __LINUX_CPUTIME_H

#include <asm/cputime.h>

#ifndef cputime_to_nsecs
# define cputime_to_nsecs(__ct)	\
	(cputime_to_usecs(__ct) * NSEC_PER_USEC)
#endif

#ifndef nsecs_to_cputime
# define nsecs_to_cputime(__nsecs)	\
	usecs_to_cputime((__nsecs) / NSEC_PER_USEC)
#endif

#endif /* __LINUX_CPUTIME_H */
cputime: Default implementation of nsecs -> cputime conversion The architectures that override cputime_t (s390, ppc) don't provide any version of nsecs_to_cputime(). Indeed this cputime_t implementation by backend only happens when CONFIG_VIRT_CPU_ACCOUNTING_NATIVE=y under which the core code doesn't make any use of nsecs_to_cputime(). At least for now. We are going to make a broader use of it so lets provide a default version with a per usecs granularity. It should be good enough for most usecases. Cc: Ingo Molnar <mingo@kernel.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> 2014-03-05 22:33:42 +07:00			`#ifndef __LINUX_CPUTIME_H`
			`#define __LINUX_CPUTIME_H`

			`#include <asm/cputime.h>`

cputime: Bring cputime -> nsecs conversion We already have nsecs_to_cputime(). Now we need to be able to convert the other way around in order to fix a bug on steal time accounting. Cc: Ingo Molnar <mingo@kernel.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> 2014-03-05 22:22:37 +07:00			`#ifndef cputime_to_nsecs`
			`# define cputime_to_nsecs(__ct) \`
			`(cputime_to_usecs(__ct) * NSEC_PER_USEC)`
			`#endif`

cputime: Default implementation of nsecs -> cputime conversion The architectures that override cputime_t (s390, ppc) don't provide any version of nsecs_to_cputime(). Indeed this cputime_t implementation by backend only happens when CONFIG_VIRT_CPU_ACCOUNTING_NATIVE=y under which the core code doesn't make any use of nsecs_to_cputime(). At least for now. We are going to make a broader use of it so lets provide a default version with a per usecs granularity. It should be good enough for most usecases. Cc: Ingo Molnar <mingo@kernel.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> 2014-03-05 22:33:42 +07:00			`#ifndef nsecs_to_cputime`
			`# define nsecs_to_cputime(__nsecs) \`
			`usecs_to_cputime((__nsecs) / NSEC_PER_USEC)`
			`#endif`

			`#endif /* __LINUX_CPUTIME_H */`