Speaking of io_virt_debug... This patch that makes all your MMIO
devices run faster, simply by eliminating io_virt_debug :)
(sorry for the CONFIG_VMDUMP pollution in config.in... I'm too slack
to rediff nicely)
Jeff
Index: linux_2_4/arch/i386/config.in
diff -u linux_2_4/arch/i386/config.in:1.1.1.20 linux_2_4/arch/i386/config.in:1.1.1.20.2.2
--- linux_2_4/arch/i386/config.in:1.1.1.20 Fri Feb 9 15:23:38 2001
+++ linux_2_4/arch/i386/config.in Fri Feb 9 19:15:10 2001
@@ -365,5 +365,7 @@
comment 'Kernel hacking'
#bool 'Debug kmalloc/kfree' CONFIG_DEBUG_MALLOC
+bool 'I/O read/write debugging' CONFIG_DEBUG_IOVIRT
bool 'Magic SysRq key' CONFIG_MAGIC_SYSRQ
+bool 'Support kernel crash dump capabilities' CONFIG_VMDUMP
endmenu
Index: linux_2_4/arch/i386/kernel/i386_ksyms.c
diff -u linux_2_4/arch/i386/kernel/i386_ksyms.c:1.1.1.14 linux_2_4/arch/i386/kernel/i386_ksyms.c:1.1.1.14.2.1
--- linux_2_4/arch/i386/kernel/i386_ksyms.c:1.1.1.14 Fri Feb 9 15:23:46 2001
+++ linux_2_4/arch/i386/kernel/i386_ksyms.c Fri Feb 9 15:52:23 2001
@@ -59,7 +60,9 @@
EXPORT_SYMBOL(dump_extended_fpu);
EXPORT_SYMBOL(__ioremap);
EXPORT_SYMBOL(iounmap);
+#ifdef CONFIG_DEBUG_IOVIRT
EXPORT_SYMBOL(__io_virt_debug);
+#endif
EXPORT_SYMBOL(enable_irq);
EXPORT_SYMBOL(disable_irq);
EXPORT_SYMBOL(disable_irq_nosync);
Index: linux_2_4/arch/i386/lib/Makefile
diff -u linux_2_4/arch/i386/lib/Makefile:1.1.1.11 linux_2_4/arch/i386/lib/Makefile:1.1.1.11.2.1
--- linux_2_4/arch/i386/lib/Makefile:1.1.1.11 Fri Feb 9 15:23:43 2001
+++ linux_2_4/arch/i386/lib/Makefile Fri Feb 9 15:52:23 2001
@@ -8,10 +8,11 @@
L_TARGET = lib.a
obj-y = checksum.o old-checksum.o delay.o \
- usercopy.o getuser.o putuser.o iodebug.o \
+ usercopy.o getuser.o putuser.o \
memcpy.o
obj-$(CONFIG_X86_USE_3DNOW) += mmx.o
obj-$(CONFIG_HAVE_DEC_LOCK) += dec_and_lock.o
+obj-$(CONFIG_DEBUG_IOVIRT) += iodebug.o
include $(TOPDIR)/Rules.make
Index: linux_2_4/include/asm-i386/io.h
diff -u linux_2_4/include/asm-i386/io.h:1.1.1.1 linux_2_4/include/asm-i386/io.h:1.1.1.1.118.1
--- linux_2_4/include/asm-i386/io.h:1.1.1.1 Sun Oct 22 12:36:21 2000
+++ linux_2_4/include/asm-i386/io.h Fri Feb 9 15:52:29 2001
@@ -1,6 +1,8 @@
#ifndef _ASM_IO_H
#define _ASM_IO_H
+#include <linux/config.h>
+
/*
* This file contains the definitions for the x86 IO instructions
* inb/inw/inl/outb/outw/outl and the "string versions" of the same
@@ -111,7 +113,7 @@
* Temporary debugging check to catch old code using
* unmapped ISA addresses. Will be removed in 2.4.
*/
-#if 1
+#if CONFIG_DEBUG_IOVIRT
extern void *__io_virt_debug(unsigned long x, const char *file, int line);
extern unsigned long __io_phys_debug(unsigned long x, const char *file, int line);
#define __io_virt(x) __io_virt_debug((unsigned long)(x), __FILE__, __LINE__)
-
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