From: Jens Axboe <axboe@kernel.dk>
Date: Thu, 21 Feb 2013 11:39:42 +0000 (+0100)
Subject: Fix x86 32-bit wrong variable type for rdtsc
X-Git-Tag: fio-2.0.14~5
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=6eb9d1b9aea77a33410eb833f2ceb4180adbfa15

Fix x86 32-bit wrong variable type for rdtsc

Bruce points out, that we are putting the result into a 32-bit
variable. That is incorrect, make it a proper ULL instead.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/arch/arch-x86.h b/arch/arch-x86.h
index 679ec281..8eea5381 100644
--- a/arch/arch-x86.h
+++ b/arch/arch-x86.h
@@ -34,7 +34,7 @@ static inline unsigned long arch_ffz(unsigned long bitmask)
 
 static inline unsigned long long get_cpu_clock(void)
 {
-	unsigned long ret;
+	unsigned long long ret;
 
 	__asm__ __volatile__("rdtsc" : "=A" (ret));
 	return ret;