From: John Kacur <jkacur@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: eranian@google.com, fweisbec@gmail.com, paulus@samba.org,
mingo@elte.hu, davem@davemloft.net, robert.richter@amd.com,
linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 07/10] bitops: Provide compile time HWEIGHT{8,16,32,64}
Date: Fri, 29 Jan 2010 12:13:25 +0100 [thread overview]
Message-ID: <520f0cf11001290313t3aa14cb0i4bc971b537709ccf@mail.gmail.com> (raw)
In-Reply-To: <1264763149.4283.2215.camel@laptop>
On Fri, Jan 29, 2010 at 12:05 PM, Peter Zijlstra <peterz@infradead.org> wrote:
> On Fri, 2010-01-29 at 11:32 +0100, John Kacur wrote:
>>
>> I like it. Maybe provide a comment that this provides the Hamming weight, it
>> took me a second to realize what this was.
>
> its called _H_weight for crying out loud.
>
Ha. :) You're right, but it's always obvious when your hands are dirty with
algorithms that can use it. Easy to forget when you're working on other stuff.
Put the term in there so we can google it more easily.
next prev parent reply other threads:[~2010-01-29 11:13 UTC|newest]
Thread overview: 120+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-22 15:50 [PATCH 00/10] perf/x86 queue Peter Zijlstra
2010-01-22 15:50 ` [PATCH 01/10] perf_events: improve x86 event scheduling (v5) Peter Zijlstra
2010-01-22 15:50 ` [PATCH 02/10] perf_events: Add fast-path to the rescheduling code Peter Zijlstra
2010-01-22 15:50 ` [PATCH 03/10] perf_event: x86: Allocate the fake_cpuc Peter Zijlstra
2010-01-29 9:27 ` [tip:perf/core] " tip-bot for Peter Zijlstra
2010-01-22 15:50 ` [PATCH 04/10] perf_event: x86: Fixup weight tying issue Peter Zijlstra
2010-01-29 9:27 ` [tip:perf/core] perf_event: x86: Fixup constraints typing issue tip-bot for Peter Zijlstra
2010-01-22 15:50 ` [PATCH 05/10] perf_event: x86: Clean up some of the u64/long bitmask casting Peter Zijlstra
2010-01-29 9:27 ` [tip:perf/core] " tip-bot for Peter Zijlstra
2010-01-22 15:50 ` [PATCH 06/10] perf_event: x86: Reduce some overly long lines with some MACROs Peter Zijlstra
2010-01-29 9:27 ` [tip:perf/core] " tip-bot for Peter Zijlstra
2010-01-22 15:50 ` [PATCH 07/10] bitops: Provide compile time HWEIGHT{8,16,32,64} Peter Zijlstra
2010-01-29 9:28 ` [tip:perf/core] " tip-bot for Peter Zijlstra
2010-01-29 10:01 ` Andrew Morton
2010-01-29 10:04 ` Ingo Molnar
2010-01-29 10:13 ` Andrew Morton
2010-01-29 11:03 ` Peter Zijlstra
2010-01-29 16:24 ` Linus Torvalds
2010-01-29 22:50 ` H. Peter Anvin
2010-01-30 16:28 ` Peter Zijlstra
2010-02-01 12:43 ` Peter Zijlstra
2010-02-01 19:06 ` H. Peter Anvin
2010-04-06 23:03 ` [tip:core/hweight] bitops: Optimize hweight() by making use of compile-time evaluation tip-bot for Peter Zijlstra
2010-01-29 10:32 ` [PATCH 07/10] bitops: Provide compile time HWEIGHT{8,16,32,64} John Kacur
2010-01-29 11:05 ` Peter Zijlstra
2010-01-29 11:13 ` John Kacur [this message]
2010-01-30 0:09 ` H. Peter Anvin
2010-01-30 7:34 ` Ingo Molnar
2010-01-22 15:50 ` [PATCH 08/10] perf_event: Optimize the constraint searching bits Peter Zijlstra
2010-01-22 16:08 ` Stephane Eranian
2010-01-22 16:22 ` Peter Zijlstra
2010-01-22 16:28 ` Stephane Eranian
2010-01-29 9:28 ` [tip:perf/core] perf_event: x86: " tip-bot for Peter Zijlstra
2010-01-22 15:50 ` [PATCH 09/10] perf_event: x86: Optimize constraint weight computation Peter Zijlstra
2010-01-29 9:28 ` [tip:perf/core] " tip-bot for Peter Zijlstra
2010-01-22 15:50 ` [PATCH 10/10] perf_event: Optimize the fast path a little more Peter Zijlstra
2010-01-29 9:28 ` [tip:perf/core] perf_event: x86: " tip-bot for Peter Zijlstra
-- strict thread matches above, loose matches on Subject: below --
2010-01-30 9:45 [PATCH 0/5] [RESEND] FMODE_NONOTIFY and FMODE_NEG_OFFSET bits Wu Fengguang
2010-01-30 9:45 ` [PATCH 1/5] fanotify: fix FMODE_NONOTIFY bit number Wu Fengguang
2010-02-01 20:44 ` Andrew Morton
2010-01-30 9:45 ` [PATCH 2/5] bitops: compile time optimization for hweight_long(CONSTANT) Wu Fengguang
2010-02-01 20:48 ` Andrew Morton
2010-02-03 13:39 ` Wu Fengguang
2010-02-03 15:08 ` Andrew Morton
2010-02-03 15:15 ` Peter Zijlstra
2010-02-03 15:42 ` Andrew Morton
2010-02-03 15:47 ` Peter Zijlstra
2010-02-03 17:11 ` H. Peter Anvin
2010-02-03 18:14 ` Borislav Petkov
2010-02-03 18:47 ` Peter Zijlstra
2010-02-03 19:49 ` H. Peter Anvin
2010-02-04 15:10 ` Borislav Petkov
2010-02-04 15:13 ` Peter Zijlstra
2010-02-04 15:54 ` Borislav Petkov
2010-02-04 16:04 ` Peter Zijlstra
2010-02-05 12:11 ` Borislav Petkov
2010-02-05 12:14 ` Peter Zijlstra
2010-02-05 21:54 ` H. Peter Anvin
2010-02-06 9:36 ` Borislav Petkov
2010-02-07 1:55 ` H. Peter Anvin
2010-02-08 9:28 ` Borislav Petkov
2010-02-08 9:35 ` H. Peter Anvin
2010-02-08 9:59 ` Borislav Petkov
2010-02-11 17:24 ` Borislav Petkov
2010-02-11 17:33 ` H. Peter Anvin
2010-02-12 17:06 ` Borislav Petkov
2010-02-12 17:28 ` H. Peter Anvin
2010-02-12 17:47 ` Borislav Petkov
2010-02-12 19:05 ` H. Peter Anvin
2010-02-17 13:57 ` Michal Marek
2010-02-17 17:20 ` Borislav Petkov
2010-02-17 17:31 ` Michal Marek
2010-02-17 17:34 ` Borislav Petkov
2010-02-17 17:39 ` Michal Marek
2010-02-18 6:19 ` Borislav Petkov
2010-02-19 14:22 ` [PATCH] x86: Add optimized popcnt variants Borislav Petkov
2010-02-19 16:06 ` H. Peter Anvin
2010-02-19 16:45 ` Borislav Petkov
2010-02-19 16:53 ` H. Peter Anvin
2010-02-22 14:17 ` Borislav Petkov
2010-02-22 17:21 ` H. Peter Anvin
2010-02-22 18:49 ` Borislav Petkov
2010-02-22 19:55 ` H. Peter Anvin
2010-02-23 6:37 ` Borislav Petkov
2010-02-23 15:58 ` Borislav Petkov
2010-02-23 17:34 ` H. Peter Anvin
2010-02-23 17:54 ` Borislav Petkov
2010-02-23 18:17 ` H. Peter Anvin
2010-02-23 19:06 ` Borislav Petkov
2010-02-26 5:27 ` H. Peter Anvin
2010-02-26 7:47 ` Borislav Petkov
2010-02-26 17:48 ` H. Peter Anvin
2010-02-27 8:28 ` Borislav Petkov
2010-02-27 20:00 ` H. Peter Anvin
2010-03-09 15:36 ` Borislav Petkov
2010-03-09 15:50 ` Peter Zijlstra
2010-03-09 16:23 ` Borislav Petkov
2010-03-09 16:32 ` Peter Zijlstra
2010-03-09 17:32 ` Borislav Petkov
2010-03-09 17:37 ` Peter Zijlstra
2010-03-18 11:17 ` Borislav Petkov
2010-03-18 11:19 ` [PATCH 1/2] bitops: Optimize hweight() by making use of compile-time evaluation Borislav Petkov
2010-03-18 11:20 ` [PATCH 2/2] x86: Add optimized popcnt variants Borislav Petkov
2010-04-06 23:04 ` [tip:core/hweight] " tip-bot for Borislav Petkov
2010-04-07 7:02 ` Borislav Petkov
2010-02-18 10:51 ` [PATCH 2/5] bitops: compile time optimization for hweight_long(CONSTANT) Peter Zijlstra
2010-02-18 11:51 ` Borislav Petkov
2010-02-14 10:12 ` Peter Zijlstra
2010-02-14 11:24 ` Borislav Petkov
2010-02-14 12:23 ` Peter Zijlstra
2010-02-14 14:19 ` Borislav Petkov
2010-02-14 18:36 ` H. Peter Anvin
2010-02-14 20:28 ` Borislav Petkov
2010-02-14 22:13 ` H. Peter Anvin
2010-02-04 15:16 ` H. Peter Anvin
2010-02-04 15:39 ` Brian Gerst
2010-02-03 17:10 ` H. Peter Anvin
2010-01-30 9:45 ` [PATCH 3/5] vfs: O_* bit numbers uniqueness check Wu Fengguang
2010-01-30 9:45 ` [PATCH 4/5] vfs: introduce FMODE_NEG_OFFSET for allowing negative f_pos Wu Fengguang
2010-01-30 9:45 ` [PATCH 5/5] devmem: dont allow seek to last page Wu Fengguang
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=520f0cf11001290313t3aa14cb0i4bc971b537709ccf@mail.gmail.com \
--to=jkacur@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=davem@davemloft.net \
--cc=eranian@google.com \
--cc=fweisbec@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=paulus@samba.org \
--cc=peterz@infradead.org \
--cc=robert.richter@amd.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).