Messages in this thread Patch in this message | | | Date | Fri, 12 May 2006 17:29:52 -0500 | From | Matt Mackall <> | Subject | [PATCH] Make number of IDE interfaces configurable |
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Make IDE_HWIFS configurable if EMBEDDED
This lets us lop as much as 16k off an x86 build. It's a little ugly, but it's dead simple. Note the fix for HWIFS < 2.
Sizing interfaces dynamically unfortunately turns out to be pretty major surgery.
add/remove: 0/1 grow/shrink: 0/11 up/down: 0/-16182 (-16182) function old new delta ide_hwifs 16920 1692 -15228 init_irq 1113 750 -363 ideprobe_init 283 138 -145 ide_pci_setup_ports 1329 1193 -136 save_match 85 - -85 ide_register_hw_with_fixup 367 287 -80 ide_setup 1364 1308 -56 is_chipset_set 40 4 -36 create_proc_ide_interfaces 225 205 -20 init_ide_data 84 67 -17 ide_probe_for_cmd640x 1198 1183 -15 ide_unregister 1452 1451 -1
Signed-off-by: Matt Mackall <mpm@selenic.com>
Index: 2.6/drivers/ide/Kconfig =================================================================== --- 2.6.orig/drivers/ide/Kconfig 2006-04-20 17:01:05.000000000 -0500 +++ 2.6/drivers/ide/Kconfig 2006-05-11 15:10:58.000000000 -0500 @@ -54,7 +54,7 @@ if IDE config IDE_MAX_HWIFS int "Max IDE interfaces" - depends on ALPHA || SUPERH || IA64 + depends on ALPHA || SUPERH || IA64 || EMBEDDED default 4 help This is the maximum number of IDE hardware interfaces that will Index: 2.6/drivers/ide/setup-pci.c =================================================================== --- 2.6.orig/drivers/ide/setup-pci.c 2006-05-11 15:07:32.000000000 -0500 +++ 2.6/drivers/ide/setup-pci.c 2006-05-11 15:13:51.000000000 -0500 @@ -102,7 +102,7 @@ static ide_hwif_t *ide_match_hwif(unsign return hwif; /* pick an unused entry */ } } - for (h = 0; h < 2; ++h) { + for (h = 0; h < 2 && h < MAX_HWIFS; ++h) { hwif = ide_hwifs + h; if (hwif->chipset == ide_unknown) return hwif; /* pick an unused entry */ Index: 2.6/include/linux/ide.h =================================================================== --- 2.6.orig/include/linux/ide.h 2006-05-11 15:07:32.000000000 -0500 +++ 2.6/include/linux/ide.h 2006-05-12 14:01:53.000000000 -0500 @@ -252,7 +252,8 @@ static inline void ide_std_init_ports(hw #include <asm/ide.h> -#ifndef MAX_HWIFS +#if !defined(MAX_HWIFS) || defined(CONFIG_EMBEDDED) +#undef MAX_HWIFS #define MAX_HWIFS CONFIG_IDE_MAX_HWIFS #endif -- Mathematics is the supreme nostalgia of our time. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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