From: Ralf Baechle <ralf@linux-mips.org>
To: Franck Bui-Huu <fbuihuu@gmail.com>
Cc: Thiemo Seufer <ths@networkno.de>,
"Maciej W. Rozycki" <macro@linux-mips.org>,
linux-mips@linux-mips.org
Subject: Re: [PATCH 2/6] tlbex.c: Remove relocs[] and labels[] from the init.data section
Date: Wed, 10 Oct 2007 15:27:55 +0100 [thread overview]
Message-ID: <20071010142755.GA9325@linux-mips.org> (raw)
In-Reply-To: <470BE61F.5020108@gmail.com>
On Tue, Oct 09, 2007 at 10:35:43PM +0200, Franck Bui-Huu wrote:
> This patch reduces the kernel image size by making these 2 arrays
> automatic variables.
>
> tlbex.o~old => tlbex.o
> text: 9840 9812 -28 0%
> data: 3904 1344 -2560 -65%
> bss: 1568 1568 0 0%
> total: 15312 12724 -2588 -16%
>
> It increases the stack pressure a lot (more than 2500 bytes) but
> at this stage in the boot process, it shouldn't matter.
Even more for 64-bit kernel - and I would really like to keep reduce
the kernel stack for 64-bit kernels, THREAD_SIZE_ORDER 2 is already
slightly painful when memory becomes fragmented.
The other issue is that with CPU plugging (halfbreed patches to add that
to MIPS are around) this code can be called at any time, not only during
early startup when at most a timer interrupt may strike. Bootmem maybe?
Ralf
next prev parent reply other threads:[~2007-10-10 14:27 UTC|newest]
Thread overview: 93+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-02 13:54 [PATCH] mm/pg-r4k.c: Dump the generated code Maciej W. Rozycki
2007-10-02 14:11 ` Thiemo Seufer
2007-10-02 15:49 ` Ralf Baechle
2007-10-02 16:03 ` Thiemo Seufer
2007-10-02 16:08 ` Maciej W. Rozycki
2007-10-03 1:00 ` Ralf Baechle
2007-10-03 7:05 ` Geert Uytterhoeven
2007-10-03 10:32 ` Ralf Baechle
2007-10-03 12:17 ` Franck Bui-Huu
2007-10-03 13:11 ` Thiemo Seufer
2007-10-03 13:51 ` Maciej W. Rozycki
2007-10-03 19:45 ` Franck Bui-Huu
2007-10-03 20:18 ` Thiemo Seufer
2007-10-04 7:33 ` Franck Bui-Huu
2007-10-04 10:30 ` Maciej W. Rozycki
2007-10-04 12:15 ` Ralf Baechle
2007-10-04 15:01 ` Franck Bui-Huu
2007-10-04 15:23 ` Maciej W. Rozycki
2007-10-04 15:30 ` Ralf Baechle
2007-10-04 15:35 ` Maciej W. Rozycki
2007-10-04 15:42 ` Ralf Baechle
2007-10-04 17:34 ` Maciej W. Rozycki
2007-10-08 15:46 ` Maciej W. Rozycki
2007-10-08 16:41 ` Ralf Baechle
2007-10-08 16:45 ` Maciej W. Rozycki
2007-10-08 16:53 ` Ralf Baechle
2007-10-05 8:03 ` Franck Bui-Huu
2007-10-05 9:09 ` Geert Uytterhoeven
2007-10-08 15:02 ` Franck Bui-Huu
2007-10-08 15:21 ` Geert Uytterhoeven
2007-10-08 15:26 ` Ralf Baechle
2007-10-09 20:20 ` Franck Bui-Huu
2007-10-05 12:19 ` Maciej W. Rozycki
2007-10-08 14:48 ` Franck Bui-Huu
2007-10-08 15:24 ` Ralf Baechle
2007-10-08 15:39 ` Maciej W. Rozycki
2007-10-09 20:17 ` Franck Bui-Huu
2007-10-10 11:58 ` Maciej W. Rozycki
2007-10-10 12:08 ` [SPAM?] " Nigel Stephens
2007-10-11 12:01 ` Maciej W. Rozycki
2007-10-13 10:53 ` Richard Sandiford
2007-10-15 13:17 ` Maciej W. Rozycki
2007-10-14 19:37 ` Franck Bui-Huu
2007-10-15 13:26 ` Maciej W. Rozycki
2007-10-14 19:32 ` Franck Bui-Huu
2007-10-14 19:53 ` Thiemo Seufer
2007-10-14 20:29 ` Franck Bui-Huu
2007-10-15 19:35 ` Franck Bui-Huu
2007-10-15 20:11 ` Nigel Stephens
2007-10-16 8:24 ` Franck Bui-Huu
2007-10-16 12:58 ` Nigel Stephens
2007-10-17 7:56 ` Franck Bui-Huu
2007-10-17 12:30 ` Thiemo Seufer
2007-10-17 13:25 ` Nigel Stephens
2007-10-17 13:31 ` Maciej W. Rozycki
2007-11-04 8:21 ` Franck Bui-Huu
2007-11-04 17:47 ` Thiemo Seufer
2007-11-04 20:19 ` Franck Bui-Huu
2007-11-05 11:36 ` Ralf Baechle
2007-11-05 21:34 ` Franck Bui-Huu
2007-11-05 23:30 ` Ralf Baechle
2007-11-06 7:23 ` Franck Bui-Huu
2007-11-05 15:58 ` Nigel Stephens
2007-11-05 20:43 ` Franck Bui-Huu
2007-10-10 8:53 ` Ralf Baechle
2007-10-10 12:17 ` Maciej W. Rozycki
2007-10-05 11:51 ` Ralf Baechle
2007-10-08 14:11 ` Franck Bui-Huu
2007-10-08 14:41 ` Ralf Baechle
2007-10-09 20:33 ` Franck Bui-Huu
2007-10-09 20:34 ` [PATCH 1/6] tlbex.c: Cleanup __init usages Franck Bui-Huu
2007-10-11 16:16 ` Ralf Baechle
2007-10-12 6:36 ` Franck Bui-Huu
2007-10-12 14:43 ` Ralf Baechle
2007-10-09 20:35 ` [PATCH 2/6] tlbex.c: Remove relocs[] and labels[] from the init.data section Franck Bui-Huu
2007-10-09 20:35 ` Franck Bui-Huu
2007-10-10 14:27 ` Ralf Baechle [this message]
2007-10-10 16:17 ` Maciej W. Rozycki
2007-10-10 16:42 ` Ralf Baechle
2007-10-10 16:55 ` Geert Uytterhoeven
2007-10-10 17:01 ` Maciej W. Rozycki
2007-10-10 17:09 ` Geert Uytterhoeven
2007-10-10 19:58 ` Franck Bui-Huu
2007-10-10 19:29 ` Franck Bui-Huu
2007-10-09 20:36 ` [PATCH 3/6] tlbex.c: remove tlb_handler[] from " Franck Bui-Huu
2007-10-09 20:36 ` Franck Bui-Huu
2007-10-09 20:37 ` [PATCH 4/6] tlbex.c: remove final_handler[] " Franck Bui-Huu
2007-10-09 20:37 ` Franck Bui-Huu
2007-10-09 20:38 ` [PATCH 5/6] tlbex.c: cleanup debug code Franck Bui-Huu
2007-10-09 20:38 ` Franck Bui-Huu
2007-10-09 20:39 ` [PATCH 6/6] tlbex.c: cleanup include files Franck Bui-Huu
2007-10-09 20:39 ` Franck Bui-Huu
2007-10-03 13:41 ` [PATCH] mm/pg-r4k.c: Dump the generated code Ralf Baechle
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