From: Wei Yang <richard.weiyang@linux.alibaba.com>
To: akpm@linux-foundation.org, christian.brauner@ubuntu.com,
andriy.shevchenko@linux.intel.com
Cc: linux-kernel@vger.kernel.org,
Wei Yang <richard.weiyang@linux.alibaba.com>
Subject: [RESEND Patch 1/2] bitops: simplify get_count_order_long()
Date: Fri, 7 Aug 2020 16:58:36 +0800 [thread overview]
Message-ID: <20200807085837.11697-2-richard.weiyang@linux.alibaba.com> (raw)
In-Reply-To: <20200807085837.11697-1-richard.weiyang@linux.alibaba.com>
These two cases could be unified into one.
Signed-off-by: Wei Yang <richard.weiyang@linux.alibaba.com>
---
include/linux/bitops.h | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index 99f2ac30b1d9..030a98f0c452 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -206,10 +206,7 @@ static inline int get_count_order_long(unsigned long l)
{
if (l == 0UL)
return -1;
- else if (l & (l - 1UL))
- return (int)fls_long(l);
- else
- return (int)fls_long(l) - 1;
+ return (int)fls_long(--l);
}
/**
--
2.20.1 (Apple Git-117)
next prev parent reply other threads:[~2020-08-07 8:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-07 8:58 [RESEND Patch 0/2] trivial cleanup for get_count_order[_long] Wei Yang
2020-08-07 8:58 ` Wei Yang [this message]
2020-08-07 8:58 ` [RESEND Patch 2/2] bitops: use the same mechanism " Wei Yang
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