From: Stas Sergeev <stsp@aknet.ru>
To: Takashi Iwai <tiwai@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Joseph Fannin <jfannin@gmail.com>,
linux-kernel@vger.kernel.org
Subject: Re: 2.6.25-mm1 (snd-pcsp doesn't like DEBUG_PAGEALLOC)
Date: Mon, 21 Apr 2008 21:55:27 +0400 [thread overview]
Message-ID: <480CD50F.20706@aknet.ru> (raw)
In-Reply-To: <s5h8wz7cng7.wl%tiwai@suse.de>
Hello.
Takashi Iwai wrote:
>> CONFIG_DEBUG_PAGEALLOC is a very heavy consumer of CPU cycles. I'm not
>> surprised that it would whack what I presume to be a very latency-sensitive
>> driver.
> We can add simply a dependncy to Kconfig if this really matters.
I think this is a bit too heavy-handed.
That thing adds a lot of noise to the sound,
but it doesn't really prevent the driver from
working properly. And perhaps there are
other options with the same effect?
Also, that would motivate people to
optimize DEBUG_PAGEALLOC, while otherwise
they wouldn't know. :)
What is the problem with the warning
exactly? If it makes problems, we can
just remove it and update the help text
instead, for example.
next prev parent reply other threads:[~2008-04-21 17:55 UTC|newest]
Thread overview: 109+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-18 8:47 2.6.25-mm1 Andrew Morton
2008-04-18 11:26 ` [PATCH] 2.6.25-mm1 - Build Failure with PWRficient onchip memory controller driver Kamalesh Babulal
2008-04-18 13:02 ` StackProtector Oopses - Re: 2.6.25-mm1 Reuben Farrelly
2008-04-18 13:36 ` Ingo Molnar
2008-04-18 13:51 ` Arjan van de Ven
2008-04-18 14:41 ` Reuben Farrelly
2008-04-18 14:49 ` Reuben Farrelly
2008-04-21 15:06 ` Ingo Molnar
2008-04-22 1:48 ` Arjan van de Ven
2008-04-22 2:04 ` Valdis.Kletnieks
2008-04-22 8:34 ` Ingo Molnar
2008-04-22 14:29 ` Arjan van de Ven
2008-04-18 16:40 ` 2.6.25-mm1 (build error: driver core) Randy Dunlap
2008-04-18 16:56 ` Greg KH
2008-04-18 18:38 ` Dan Williams
2008-04-18 16:45 ` 2.6.25-mm1 (build error: trace selftest) Randy Dunlap
2008-04-18 20:14 ` 2.6.25-mm1 Valdis.Kletnieks
2008-04-18 23:09 ` 2.6.25-mm1: orphaned files after build Alexey Dobriyan
2008-04-19 2:13 ` 2.6.25-mm1 Joseph Fannin
2008-04-19 3:02 ` 2.6.25-mm1 Andrew Morton
2008-04-19 4:14 ` 2.6.25-mm1 Dmitry Torokhov
2008-04-19 4:29 ` 2.6.25-mm1 Andrew Morton
2008-04-19 6:33 ` 2.6.25-mm1 Joseph Fannin
2008-04-21 11:07 ` 2.6.25-mm1 Takashi Iwai
2008-04-21 17:44 ` 2.6.25-mm1 (snd-pcsp causes driver conflict) Stas Sergeev
2008-04-22 10:09 ` Takashi Iwai
2008-04-22 17:54 ` Stas Sergeev
2008-04-23 8:55 ` Takashi Iwai
2008-04-23 14:14 ` Takashi Iwai
2008-04-21 19:45 ` 2.6.25-mm1 Stas Sergeev
2008-04-21 14:06 ` 2.6.25-mm1 Takashi Iwai
2008-04-21 17:55 ` Stas Sergeev [this message]
2008-04-22 10:13 ` 2.6.25-mm1 (snd-pcsp doesn't like DEBUG_PAGEALLOC) Takashi Iwai
2008-04-22 14:01 ` Dmitry Torokhov
2008-04-22 16:42 ` Stas Sergeev
2008-04-22 18:31 ` Stas Sergeev
2008-04-23 8:49 ` Takashi Iwai
2008-04-23 14:18 ` Takashi Iwai
2008-04-23 20:02 ` Stas Sergeev
2008-04-24 9:40 ` Takashi Iwai
2008-04-25 3:51 ` Stas Sergeev
2008-04-25 6:28 ` Takashi Iwai
2008-04-25 16:45 ` Stas Sergeev
2008-04-25 16:51 ` Takashi Iwai
2008-04-25 17:25 ` Stas Sergeev
2008-05-02 16:44 ` Takashi Iwai
2008-05-02 16:57 ` Stas Sergeev
2008-05-06 10:20 ` Takashi Iwai
2008-05-06 16:51 ` Stas Sergeev
2008-04-25 18:09 ` Dmitry Torokhov
2008-04-25 18:31 ` Stas Sergeev
2008-04-25 18:37 ` Dmitry Torokhov
2008-04-19 2:25 ` 2.6.25-mm1 Joseph Fannin
2008-04-19 3:08 ` 2.6.25-mm1 Andrew Morton
2008-04-19 3:10 ` 2.6.25-mm1 Joseph Fannin
2008-04-19 3:29 ` 2.6.25-mm1 Andrew Morton
2008-04-19 13:25 ` 2.6.25-mm1 Andres Salomon
2008-04-19 17:38 ` 2.6.25-mm1 Andrew Morton
2008-04-19 17:50 ` 2.6.25-mm1 Andres Salomon
2008-04-21 14:56 ` 2.6.25-mm1 Jordan Crouse
2008-04-21 15:05 ` 2.6.25-mm1 Andres Salomon
2008-04-21 15:12 ` 2.6.25-mm1 Jordan Crouse
2008-04-19 17:39 ` [PATCH 1/2] OLPC: Add support for calling into Open Firmware Andres Salomon
2008-04-20 10:34 ` Yinghai Lu
2008-04-20 12:07 ` H. Peter Anvin
2008-04-20 17:59 ` Andres Salomon
2008-04-20 18:42 ` Mitch Bradley
2008-04-20 19:12 ` H. Peter Anvin
2008-04-21 3:39 ` Mitch Bradley
2008-04-21 4:54 ` Yinghai Lu
2008-04-21 8:22 ` Mitch Bradley
2008-04-21 11:36 ` H. Peter Anvin
2008-04-21 13:09 ` H. Peter Anvin
2008-04-21 13:13 ` H. Peter Anvin
2008-04-21 13:19 ` H. Peter Anvin
2008-04-21 15:05 ` Jordan Crouse
2008-04-21 14:58 ` H. Peter Anvin
2008-04-20 19:13 ` [PATCH 1/2] " H. Peter Anvin
2008-04-21 3:09 ` Mitch Bradley
2008-04-21 3:15 ` Yinghai Lu
2008-04-21 4:05 ` Mitch Bradley
2008-04-21 4:26 ` David Miller
2008-04-21 4:50 ` Yinghai Lu
2008-04-21 8:03 ` Mitch Bradley
2008-04-21 14:24 ` Andres Salomon
2008-04-21 15:54 ` David Woodhouse
2008-04-21 16:57 ` H. Peter Anvin
2008-04-21 18:54 ` David Woodhouse
2008-04-21 17:03 ` Andres Salomon
2008-04-21 19:18 ` David Woodhouse
2008-04-21 19:46 ` Andres Salomon
2008-04-21 20:25 ` David Woodhouse
2008-04-21 21:02 ` [PATCH] OLPC: only check for OFW signature on VSA-less Geodes Andres Salomon
2008-04-21 21:17 ` Jordan Crouse
2008-04-21 21:17 ` [PATCH] " David Woodhouse
2008-04-29 3:06 ` Andrew Morton
2008-04-29 5:32 ` [PATCH] x86: GEODE: cache results from geode_has_vsa2() and uninline Andres Salomon
2008-04-29 20:35 ` Andrew Morton
2008-04-29 20:57 ` Andres Salomon
2008-04-19 17:39 ` [PATCH 2/2] OLPC: drop pre-OpenFirmware workarounds Andres Salomon
2008-04-19 18:21 ` 2.6.25-mm1 Arjan van de Ven
2008-04-20 11:29 ` internal compiler error: SIGSEGV [Was: 2.6.25-mm1] Jiri Slaby
2008-04-21 8:31 ` Jiri Slaby
2008-04-21 9:06 ` Al Viro
2008-04-21 9:37 ` fault in __d_lookup " Jiri Slaby
2008-04-21 9:45 ` Al Viro
2008-04-21 9:59 ` Jiri Slaby
2008-04-21 13:42 ` Rafael J. Wysocki
2008-04-21 17:23 ` Matthew Wilcox
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