diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:30:05 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:30:05 +0100 |
| commit | 6e7c402590b75b6b45138792445ee0f0315a8473 (patch) | |
| tree | 94db814d496502932ab55acc560a728925f87540 /include | |
| parent | b02aae9cf52956dfe1bec73f77f81a3d05d3902b (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.h | 10 | ||||
| -rw-r--r-- | include/asm-x86/io_64.h | 10 |
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(); |