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
next 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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