Hi Scott,

Thanks for your reminder!
I rephrased it as below:

-#define cputime64_to_clock_t(ct) cputime_to_clock_t((cputime_t)(ct))
+#define cputime64_to_clock_t(ct)       \
+       (u64)(cputime_to_clock_t((cputime_t)(ct)))


and rebuilt the kernel, no warnings found.
New patch is attached, could you also help me to review it?

Regards!
Yanjiang

On 2016年11月30日 22:40, Scott Wood wrote:

On Mon, 2016-11-21 at 12:56 +0800, yanjiang.jin@windriver.com wrote:

quoted

From: Yanjiang Jin <redacted>

This patch is to avoid the below warning:

kernel/sched/cpuacct.c:298:25: warning:
format '%lld' expects argument of type 'long long int',
but argument 4 has type 'long unsigned int' [-Wformat=]

Signed-off-by: Yanjiang Jin <redacted>
---
  arch/powerpc/include/asm/cputime.h | 3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/include/asm/cputime.h

b/arch/powerpc/include/asm/cputime.h
index 4f60db0..4423e97 100644

--- a/arch/powerpc/include/asm/cputime.h
+++ b/arch/powerpc/include/asm/cputime.h

@@ -228,7 +228,8 @@ static inline cputime_t clock_t_to_cputime(const

unsigned long clk)
  	return (__force cputime_t) ct;
  }
  
-#define cputime64_to_clock_t(ct)	cputime_to_clock_t((cputime_t)(ct))
+#define cputime64_to_clock_t(ct)	\
+	(__force u64)(cputime_to_clock_t((cputime_t)(ct)))

Why is __force needed?

-Scott