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Message-Id: <1394128601-26034-4-git-send-email-fweisbec@gmail.com> Date: Thu, 6 Mar 2014 18:56:38 +0100 From: Frederic Weisbecker <fweisbec@...il.com> To: LKML <linux-kernel@...r.kernel.org> Cc: Frederic Weisbecker <fweisbec@...il.com>, Ingo Molnar <mingo@...nel.org>, Marcelo Tosatti <mtosatti@...hat.com>, Peter Zijlstra <peterz@...radead.org>, Thomas Gleixner <tglx@...utronix.de> Subject: [PATCH 3/6] 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@...nel.org> Cc: Marcelo Tosatti <mtosatti@...hat.com> Cc: Peter Zijlstra <peterz@...radead.org> Cc: Thomas Gleixner <tglx@...utronix.de> Signed-off-by: Frederic Weisbecker <fweisbec@...il.com> --- include/asm-generic/cputime_jiffies.h | 4 +++- include/asm-generic/cputime_nsecs.h | 2 ++ include/linux/cputime.h | 5 +++++ 3 files changed, 10 insertions(+), 1 deletion(-) diff --git a/include/asm-generic/cputime_jiffies.h b/include/asm-generic/cputime_jiffies.h index 272ecba..d5cb78f5 100644 --- a/include/asm-generic/cputime_jiffies.h +++ b/include/asm-generic/cputime_jiffies.h @@ -15,8 +15,10 @@ typedef u64 __nocast cputime64_t; /* - * Convert nanoseconds to cputime + * Convert nanoseconds <-> cputime */ +#define cputime_to_nsecs(__ct) \ + jiffies_to_nsecs(cputime_to_jiffies(__ct)) #define nsecs_to_cputime64(__nsec) \ jiffies64_to_cputime64(nsecs_to_jiffies64(__nsec)) #define nsecs_to_cputime(__nsec) \ diff --git a/include/asm-generic/cputime_nsecs.h b/include/asm-generic/cputime_nsecs.h index 768294f..4e81760 100644 --- a/include/asm-generic/cputime_nsecs.h +++ b/include/asm-generic/cputime_nsecs.h @@ -44,6 +44,8 @@ typedef u64 __nocast cputime64_t; /* * Convert cputime <-> nanoseconds */ +#define cputime_to_nsecs(__ct) \ + (__force u64)(__ct) #define nsecs_to_cputime(__nsecs) \ (__force cputime_t)(__nsecs) diff --git a/include/linux/cputime.h b/include/linux/cputime.h index 2842ebe..f2eb2ee 100644 --- a/include/linux/cputime.h +++ b/include/linux/cputime.h @@ -3,6 +3,11 @@ #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) -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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