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authorIngo Molnar <mingo@elte.hu>2008-01-30 13:30:05 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:30:05 +0100
commit6e7c402590b75b6b45138792445ee0f0315a8473 (patch)
tree94db814d496502932ab55acc560a728925f87540 /include
parentb02aae9cf52956dfe1bec73f77f81a3d05d3902b (diff)
x86: various changes and cleanups to in_p/out_p delay details
various changes to the in_p/out_p delay details: - add the io_delay=none method - make each method selectable from the kernel config - simplify the delay code a bit by getting rid of an indirect function call - add the /proc/sys/kernel/io_delay_type sysctl - change 'io_delay=standard|alternate' to io_delay=0x80 and io_delay=0xed - make the io delay config not depend on CONFIG_DEBUG_KERNEL Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: "David P. Reed" <dpreed@reed.com>
Diffstat (limited to 'include')
-rw-r--r--include/asm-x86/io_32.h10
-rw-r--r--include/asm-x86/io_64.h10
2 files changed, 6 insertions, 14 deletions
diff --git a/include/asm-x86/io_32.h b/include/asm-x86/io_32.h
index a8d25c38b91c..2a04bd17eac5 100644
--- a/include/asm-x86/io_32.h
+++ b/include/asm-x86/io_32.h
@@ -250,15 +250,11 @@ static inline void flush_write_buffers(void)
#endif /* __KERNEL__ */
-#ifndef CONFIG_UDELAY_IO_DELAY
-extern void io_delay_init(void);
-#else
-static inline void io_delay_init(void)
-{
-}
-#endif
extern void native_io_delay(void);
+extern int io_delay_type;
+extern void io_delay_init(void);
+
#if defined(CONFIG_PARAVIRT)
#include <asm/paravirt.h>
#else
diff --git a/include/asm-x86/io_64.h b/include/asm-x86/io_64.h
index 5bebaf961692..dbcc03aa1c6a 100644
--- a/include/asm-x86/io_64.h
+++ b/include/asm-x86/io_64.h
@@ -35,15 +35,11 @@
* - Arnaldo Carvalho de Melo <acme@conectiva.com.br>
*/
-#ifndef CONFIG_UDELAY_IO_DELAY
-extern void io_delay_init(void);
-#else
-static inline void io_delay_init(void)
-{
-}
-#endif
extern void native_io_delay(void);
+extern int io_delay_type;
+extern void io_delay_init(void);
+
static inline void slow_down_io(void)
{
native_io_delay();