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From: "David S. Miller" <davem@davemloft.net>
To: sdbrady@ntlworld.com
Cc: ralf@linux-mips.org, grundler@parisc-linux.org,
	mita@miraclelinux.com, linux-kernel@vger.kernel.org,
	ink@jurassic.park.msu.ru, spyro@f2s.com, dev-etrax@axis.com,
	dhowells@redhat.com, ysato@users.sourceforge.jp,
	torvalds@osdl.org, linux-ia64@vger.kernel.org,
	takata@linux-m32r.org, linux-m68k@vger.kernel.org,
	gerg@uclinux.org, linux-mips@linux-mips.org,
	parisc-linux@parisc-linux.org, linuxppc-dev@ozlabs.org,
	linux390@de.ibm.com, linuxsh-dev@lists.sourceforge.net,
	linuxsh-shmedia-dev@lists.sourceforge.net,
	sparclinux@vger.kernel.org, ultralinux@vger.kernel.org,
	uclinux-v850@lsi.nec.co.jp, ak@suse.de, chris@zankel.net
Subject: Re: [parisc-linux] Re: [PATCH 3/6] C-language equivalents of include/asm-*/bitops.h
Date: Mon, 30 Jan 2006 15:02:44 -0800 (PST)	[thread overview]
Message-ID: <20060130.150244.81476469.davem@davemloft.net> (raw)
In-Reply-To: <20060130195004.GA25860@miranda.arrow>

From: Stuart Brady <sdbrady@ntlworld.com>
Date: Mon, 30 Jan 2006 19:50:04 +0000

> Shame about popc on SPARC.  However, ffz is cheese, regardless of pops.
> (On sparc64, ffs is too.)  I'll wait for the generic bitops patches to
> be dealt with (or not) and then submit a patch fixing this if needed.

I'm happy with any improvement you might make here, for sure.

The sparc64 ffz() implementation was done so dog stupid like that
so that the code would be small since this gets inlined all over
the place.

So if you can keep it small and improve it, or make it a bit larger
and uninline it, that's great.

  reply	other threads:[~2006-01-30 23:03 UTC|newest]

Thread overview: 81+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-01-25 11:26 [PATCH 0/6] RFC: use include/asm-generic/bitops.h Akinobu Mita
2006-01-25 11:28 ` [PATCH 1/6] {set,clear,test}_bit() related cleanup Akinobu Mita
2006-01-25 11:46   ` Andi Kleen
2006-01-26 16:14   ` Pavel Machek
2006-01-26 16:47     ` Russell King
2006-01-26 19:14     ` Paul Jackson
2006-01-25 11:30 ` [PATCH 2/6] use non atomic operations for minix_*_bit() and ext2_*_bit() Akinobu Mita
2006-01-25 11:32 ` [PATCH 3/6] C-language equivalents of include/asm-*/bitops.h Akinobu Mita
2006-01-25 11:54   ` Keith Owens
2006-01-26  2:13     ` Akinobu Mita
2006-01-26  2:19       ` Akinobu Mita
2006-01-25 20:02   ` Russell King
2006-01-25 20:59     ` Grant Grundler
2006-01-26  3:27       ` Akinobu Mita
2006-01-26  3:29         ` [PATCH 1/12] generic *_bit() Akinobu Mita
2006-02-01 15:11           ` Chen, Kenneth W
2006-02-01 18:02             ` Christoph Hellwig
2006-02-01 18:07               ` Chen, Kenneth W
2006-02-01 19:19                 ` Russell King
2006-02-01 19:25                   ` Chen, Kenneth W
2006-02-01 19:35                     ` Russell King
2006-02-03 10:24                   ` Geert Uytterhoeven
2006-02-03 10:27                     ` Russell King
2006-02-01 19:39                 ` Grant Grundler
2006-02-01 21:41                   ` Chen, Kenneth W
2006-02-01 22:09                     ` Grant Grundler
2006-02-01 22:49                       ` Anton Altaparmakov
2006-02-02  0:08                         ` Grant Grundler
2006-02-02  8:52                           ` Anton Altaparmakov
2006-02-02 10:13                             ` Andreas Schwab
2006-02-02 22:43                 ` Paul Mackerras
2006-01-26  3:30         ` [PATCH 2/12] generic __ffs() Akinobu Mita
2006-01-26  3:31         ` [PATCH 3/12] generic ffz() Akinobu Mita
2006-01-26  8:21           ` Michael Tokarev
2006-01-27  6:39             ` [PATCH] parisc: add ()-pair in __ffs() Akinobu Mita
2006-01-26  3:32         ` [PATCH 4/12] generic fls() and fls64() Akinobu Mita
2006-01-26  3:33         ` [PATCH 5/12] generic find_{next,first}{,_zero}_bit() Akinobu Mita
2006-01-26  3:34         ` [PATCH 6/12] generic sched_find_first_bit() Akinobu Mita
2006-01-26  3:35         ` [PATCH 7/12] generic ffs() Akinobu Mita
2006-01-26  3:36         ` [PATCH 8/12] generic hweight{32,16,8}() Akinobu Mita
2006-01-26  7:12           ` Balbir Singh
2006-01-26 10:04             ` Rutger Nijlunsing
2006-01-27  4:55             ` Akinobu Mita
2006-01-27  5:40               ` Balbir Singh
2006-01-27  6:40                 ` Akinobu Mita
2006-01-31 11:14                   ` Balbir Singh
2006-01-26 18:57           ` Bryan O'Sullivan
2006-01-27  4:43             ` Akinobu Mita
2006-01-27  5:23               ` Bryan O'Sullivan
2006-01-26  3:36         ` [PATCH 9/12] generic hweight64() Akinobu Mita
2006-01-26  7:05           ` Balbir Singh
2006-01-26  3:38         ` [PATCH 10/12] generic ext2_{set,clear,test,find_first_zero,find_next_zero}_bit() Akinobu Mita
2006-01-26  3:38         ` [PATCH 11/12] generic ext2_{set,clear}_bit_atomic() Akinobu Mita
2006-01-26  3:39         ` [PATCH 12/12] generic minix_{test,set,test_and_clear,test,find_first_zero}_bit() Akinobu Mita
2006-01-25 23:25     ` [PATCH 3/6] C-language equivalents of include/asm-*/bitops.h Ian Molton
2006-01-26  0:06     ` Richard Henderson
2006-01-26  4:34       ` Edgar Toernig
2006-01-26 17:30         ` Richard Henderson
2006-01-26  8:55       ` Russell King
2006-01-26 16:18         ` [parisc-linux] " Grant Grundler
2006-01-26 16:30           ` Nicolas Pitre
2006-01-26 16:40           ` Russell King
2006-01-26 23:04             ` Grant Grundler
2006-01-26 23:03               ` Russell King
2006-01-29  7:12                 ` Stuart Brady
2006-01-30  4:03                   ` David S. Miller
2006-01-30 17:06                   ` Ralf Baechle
2006-01-30 19:50                     ` Stuart Brady
2006-01-30 23:02                       ` David S. Miller [this message]
2006-01-27  0:28               ` [parisc-linux] Re: [PATCH 3/6] C-language equivalents of John David Anglin
2006-01-27 12:51   ` [PATCH 3/6] C-language equivalents of include/asm-*/bitops.h Hirokazu Takata
2006-01-30  3:29     ` Akinobu Mita
2006-01-25 11:34 ` [PATCH 5/6] fix warning on test_ti_thread_flag() Akinobu Mita
2006-01-25 12:28   ` Geert Uytterhoeven
2006-01-25 22:28   ` Paul Mackerras
2006-01-26  0:04     ` David S. Miller
2006-01-25 11:35 ` [PATCH 6/6] remove unused generic bitops in include/linux/bitops.h Akinobu Mita
     [not found] ` <20060125113336.GE18584@miraclelinux.com>
2006-01-26  1:49   ` [PATCH 4/6] use include/asm-generic/bitops for each architecture Akinobu Mita
2006-01-26  2:37     ` Grant Grundler
2006-01-27 13:04     ` Hirokazu Takata
2006-01-30  3:15       ` Akinobu Mita

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