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From: Anton Blanchard <anton@ozlabs.org>
To: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au,
	npiggin@gmail.com
Cc: linuxppc-dev@lists.ozlabs.org
Subject: [PATCH] powerpc: Add cputime_to_nsecs()
Date: Mon, 13 Jul 2020 18:36:01 +1000	[thread overview]
Message-ID: <20200713083601.1103978-1-anton@ozlabs.org> (raw)

Generic code has a wrapper to implement cputime_to_nsecs() on top of
cputime_to_usecs() but we can easily return the full nanosecond
resolution directly.

Signed-off-by: Anton Blanchard <anton@ozlabs.org>
---
 arch/powerpc/include/asm/cputime.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/include/asm/cputime.h b/arch/powerpc/include/asm/cputime.h
index 0fccd5ea1e9a..9335b93924b4 100644
--- a/arch/powerpc/include/asm/cputime.h
+++ b/arch/powerpc/include/asm/cputime.h
@@ -36,6 +36,8 @@ 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)
+
 /*
  * PPC64 uses PACA which is task independent for storing accounting data while
  * PPC32 uses struct thread_info, therefore at task switch the accounting data
-- 
2.26.2


             reply	other threads:[~2020-07-13  8:37 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-13  8:36 Anton Blanchard [this message]
2020-07-16 12:55 ` [PATCH] powerpc: Add cputime_to_nsecs() Michael Ellerman

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