From: Tomi Valkeinen <tomi.valkeinen@ti.com>
To: Chandrabhanu Mahapatra <cmahapatra@ti.com>
Cc: linux-omap@vger.kernel.org, linux-fbdev@vger.kernel.org
Subject: Re: [PATCH V2 0/2] OMAPDSS: Enable dynamic debug printing
Date: Wed, 26 Sep 2012 14:29:52 +0000 [thread overview]
Message-ID: <1348669792.2376.51.camel@deskari> (raw)
In-Reply-To: <cover.1348636132.git.cmahapatra@ti.com>
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Hi,
On Wed, 2012-09-26 at 10:45 +0530, Chandrabhanu Mahapatra wrote:
> Hi everyone,
> this patch series aims at cleaning up of DSS of printk()'s enabled with
> dss_debug and replace them with generic dynamic debug printing.
>
> The 1st patch
> * replaces printk() in DSSDBG definition with pr_debug()
> * removes DSSDBGF definition and replaces its instances with DSSDBG()
> The 2nd patch
> * cleans up printk()'s in omap_dispc_unregister_isr() and
> _dsi_print_reset_status() with pr_debug()
> * removes dss_debug variable
>
> Changes with respect to V1:
> * added debug messages to DSSDBG calls replacing DSSDBGF
> * added patch "OMAPDSS: Remove dss_debug variable"
>
> All your comments and suggestions are welcome.
This doesn't work quite correctly. The problem is in dss.h, where we
define DEBUG if CONFIG_OMAP2_DSS_DEBUG_SUPPORT is set. The thing is,
DEBUG should be defined before including the kernel headers where the
pr_debug etc are defined.
So if you try the patches without dynamic debugging enabled, you won't
get any debug outputs at all, even if CONFIG_OMAP2_DSS_DEBUG_SUPPORT is
set.
And for dynamic debug, the Kconfig help says:
If a source file is compiled with DEBUG flag set, any
pr_debug() calls in it are enabled by default, but can be
disabled at runtime as below. Note that DEBUG flag is
turned on by many CONFIG_*DEBUG* options.
So if we have CONFIG_OMAP2_DSS_DEBUG_SUPPORT set, all the pr_debugs
should be enabled by default, which is not the case, again because DEBUG
is defined too late.
I think setting DEBUG in dss.h should be removed, and instead DEBUG
should be set in the makefile if CONFIG_OMAP2_DSS_DEBUG_SUPPORT is set.
Tomi
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next prev parent reply other threads:[~2012-09-26 14:29 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-25 6:15 [PATCH] OMAPDSS: Cleanup DSSDBG with dynamic pr_debug function Chandrabhanu Mahapatra
2012-09-25 6:24 ` Tomi Valkeinen
2012-09-25 9:42 ` Mahapatra, Chandrabhanu
2012-09-25 9:57 ` Tomi Valkeinen
2012-09-26 5:27 ` [PATCH V2 0/2] OMAPDSS: Enable dynamic debug printing Chandrabhanu Mahapatra
2012-09-26 5:27 ` [PATCH V2 1/2] OMAPDSS: Cleanup DSSDBG with dynamic pr_debug function Chandrabhanu Mahapatra
2012-09-26 5:28 ` [PATCH V2 2/2] OMAPDSS: Remove dss_debug variable Chandrabhanu Mahapatra
2012-09-26 14:29 ` Tomi Valkeinen [this message]
2012-09-27 10:50 ` [PATCH V2 0/2] OMAPDSS: Enable dynamic debug printing Mahapatra, Chandrabhanu
2012-09-27 11:01 ` Tomi Valkeinen
2012-09-28 10:35 ` [PATCH V3 0/3] " Chandrabhanu Mahapatra
2012-09-28 10:35 ` [PATCH V3 1/3] OMAPDSS: Move definition of DEBUG flag to Makefile Chandrabhanu Mahapatra
2012-09-28 10:35 ` [PATCH V3 2/3] OMAPDSS: Cleanup DSSDBG with dynamic pr_debug function Chandrabhanu Mahapatra
2012-09-28 11:22 ` Tomi Valkeinen
2012-09-28 11:42 ` Mahapatra, Chandrabhanu
2012-09-28 11:37 ` Tomi Valkeinen
2012-09-28 10:35 ` [PATCH V3 3/3] OMAPDSS: Remove dss_debug variable Chandrabhanu Mahapatra
2012-09-28 11:34 ` [PATCH V3 0/3] OMAPDSS: Enable dynamic debug printing Tomi Valkeinen
2012-09-28 12:23 ` Mahapatra, Chandrabhanu
2012-09-29 10:51 ` [PATCH V4 0/5] " Chandrabhanu Mahapatra
2012-09-29 10:51 ` [PATCH V4 1/5] OMAPDSS: Move definition of DEBUG flag to Makefile Chandrabhanu Mahapatra
2012-09-29 10:52 ` [PATCH V4 2/5] OMAPDSS: Create new debug config options Chandrabhanu Mahapatra
2012-09-29 15:27 ` Sumit Semwal
2012-10-01 7:51 ` [PATCH V5 " Chandrabhanu Mahapatra
2012-09-29 10:52 ` [PATCH V4 3/5] OMAPDSS: Cleanup DSSDBG with dynamic pr_debug function Chandrabhanu Mahapatra
2012-09-29 10:52 ` [PATCH V4 4/5] OMAPDSS: Replace multi part debug prints with pr_debug Chandrabhanu Mahapatra
2012-10-05 12:33 ` Tomi Valkeinen
2012-10-10 9:34 ` [PATCH V5 " Chandrabhanu Mahapatra
2012-09-29 10:52 ` [PATCH V4 5/5] OMAPDSS: Remove dss_debug variable Chandrabhanu Mahapatra
2012-10-05 12:46 ` [PATCH V4 0/5] OMAPDSS: Enable dynamic debug printing Tomi Valkeinen
2012-10-10 10:38 ` Sumit Semwal
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