All of lore.kernel.org
 help / color / mirror / Atom feed
From: Wei Yang <richard.weiyang@gmail.com>
To: Wei Yang <richard.weiyang@gmail.com>
Cc: akpm@linux-foundation.org, andriy.shevchenko@linux.intel.com,
	christian.brauner@ubuntu.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] bitops: use the same mechanism for get_count_order[_long]
Date: Sat, 30 May 2020 21:22:25 +0000	[thread overview]
Message-ID: <20200530212225.l2zbkq5mrvkabxik@master> (raw)
In-Reply-To: <20200525215958.21653-1-richard.weiyang@gmail.com>

Andrew,

Would you mind picking up this one? The test module doesn't show any warning
after this on applied.

On Mon, May 25, 2020 at 09:59:58PM +0000, Wei Yang wrote:
>These two functions share the same logic.
>
>Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
>---
> include/linux/bitops.h | 8 +++-----
> 1 file changed, 3 insertions(+), 5 deletions(-)
>
>diff --git a/include/linux/bitops.h b/include/linux/bitops.h
>index 5b5609e81a84..80703ef27aee 100644
>--- a/include/linux/bitops.h
>+++ b/include/linux/bitops.h
>@@ -188,12 +188,10 @@ static inline unsigned fls_long(unsigned long l)
> 
> static inline int get_count_order(unsigned int count)
> {
>-	int order;
>+	if (count == 0)
>+		return -1;
> 
>-	order = fls(count) - 1;
>-	if (count & (count - 1))
>-		order++;
>-	return order;
>+	return fls(--count);
> }
> 
> /**
>-- 
>2.23.0

-- 
Wei Yang
Help you, Help me

      parent reply	other threads:[~2020-05-30 21:22 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-25 21:59 [PATCH] bitops: use the same mechanism for get_count_order[_long] Wei Yang
2020-05-26  7:04 ` Andy Shevchenko
2020-05-26 21:57   ` Wei Yang
2020-05-30 21:22 ` Wei Yang [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200530212225.l2zbkq5mrvkabxik@master \
    --to=richard.weiyang@gmail.com \
    --cc=akpm@linux-foundation.org \
    --cc=andriy.shevchenko@linux.intel.com \
    --cc=christian.brauner@ubuntu.com \
    --cc=linux-kernel@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.