From ade7667a981be49af9310f7c682c226283ec833d Mon Sep 17 00:00:00 2001
From: Anton Blanchard <anton@ozlabs.org>
Date: Mon, 13 Jul 2020 18:36:01 +1000
Subject: [PATCH] powerpc: Add cputime_to_nsecs()

References: bsc#1065729
Patch-mainline: v5.9-rc1
Git-commit: ade7667a981be49af9310f7c682c226283ec833d

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>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200713083601.1103978-1-anton@ozlabs.org
Acked-by: Michal Suchanek <msuchanek@suse.de>
---
 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
-- 
2.28.0