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From: Andrew Morton <akpm@osdl.org>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: pavel@ucw.cz, randy_d_dunlap@linux.intel.com,
	linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org
Subject: Re: [PATCH 2/13] ATA ACPI: debugging infrastructure
Date: Tue, 28 Feb 2006 04:18:17 -0800	[thread overview]
Message-ID: <20060228041817.6fc444d2.akpm@osdl.org> (raw)
In-Reply-To: <44043B4E.30907@pobox.com>

Jeff Garzik <jgarzik@pobox.com> wrote:
>
> Fine-grained 
>  message selection allows one to turn on only the messages needed, and 
>  only for the controller desired.

Except

- There's (presently) no way of making all the messages go away for a
  non-debug build.

- The code is structured as

	if (ata_msg_foo(p))
		printk("something");

  So if we later do

	#define ata_msg_foo(p)	0

  We'll still get copies of "something" in the kernel image (may be fixed
  in later gcc, dunno).

- The new debug stuff isn't documented.  One has funble around in the
  source to work out how to even turn it on.  Can it be altered at runtime?
  Dunno - the changelogs are risible.  What effect do the various flags
  have?

  Having spent (and re-spent) time grovelling through the ALSA source
  working out how to enable their debug stuff during a maintainer snooze
  I'd prefer we didn't have to do that with libata as well.



  parent reply	other threads:[~2006-02-28 12:19 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20060222133241.595a8509.randy_d_dunlap@linux.intel.com>
2006-02-22 21:40 ` [PATCH 1/13] ATA ACPI: Makefile/Kconfig/doc Randy Dunlap
2006-02-22 21:51 ` [PATCH 2/13] ATA ACPI: debugging infrastructure Randy Dunlap
2006-02-28 11:45   ` Pavel Machek
2006-02-28 12:00     ` Jeff Garzik
2006-02-28 12:04       ` Pavel Machek
2006-02-28 12:13         ` Jeff Garzik
2006-02-28 12:18       ` Andrew Morton [this message]
2006-02-28 12:31         ` Jeff Garzik
2006-02-28 18:35           ` Andrew Morton
2006-02-28 19:27             ` Jeff Garzik
2006-02-28 14:43         ` Mark Lord
2006-02-28 19:22           ` Randy Dunlap
2006-02-28 17:10         ` Phillip Susi
2006-03-01 10:29         ` James Courtier-Dutton
2006-03-01 10:45           ` Andrew Morton
2006-02-22 21:52 ` [PATCH 3/13] ATA ACPI: SATA methods Randy Dunlap
2006-02-22 21:54 ` [PATCH 4/13] ATA ACPI: add params/docs Randy Dunlap
2006-02-28 11:46   ` Pavel Machek
2006-02-28 11:57     ` Jeff Garzik
2006-02-22 21:55 ` [PATCH 5/13] ATA ACPI: use debugging macros Randy Dunlap
2006-02-28 11:47   ` Pavel Machek
2006-02-28 11:58     ` Jeff Garzik
2006-02-22 21:56 ` [PATCH 6/13] ATA ACPI: use correct acpi_object pointer Randy Dunlap
2006-02-22 21:58 ` [PATCH 7/13] ATA ACPI: more Makefile/Kconfig Randy Dunlap
2006-02-28 11:49   ` Pavel Machek
2006-02-28 12:03     ` Jeff Garzik
2006-02-28 15:27       ` Randy.Dunlap
2006-02-22 21:58 ` [PATCH 8/13] ATA ACPI: PATA methods Randy Dunlap
2006-02-28 11:55   ` Pavel Machek
2006-02-28 12:02     ` Jeff Garzik
2006-02-22 22:00 ` [PATCH 9/13] ATA ACPI: check SATA/PATA more carefully Randy Dunlap
2006-02-23  0:30   ` Alan Cox
2006-02-22 22:01 ` [PATCH 10/13] ATA ACPI: do taskfile before mode commands Randy Dunlap
2006-02-28 11:57   ` Pavel Machek
2006-02-28 12:05     ` Jeff Garzik
2006-02-28 12:08       ` Pavel Machek
2006-02-28 12:14         ` Jeff Garzik
2006-02-22 22:02 ` [PATCH 11/13] ATA ACPI: fix pata host typo Randy Dunlap
2006-02-22 22:06 ` [PATCH 12/13] ATA ACPI: use scsi_bus_shutdown for SATA/PATA Randy Dunlap
2006-02-28 11:58   ` Pavel Machek
2006-02-28 19:44     ` Randy Dunlap
2006-02-28 20:22       ` Pavel Machek
2006-02-22 22:07 ` [PATCH 13/13] ATA ACPI: enable writing PATA taskfiles Randy Dunlap
2006-02-28 11:59   ` Pavel Machek

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