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| 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 /kernel/sysctl.c | |
| parent | b02aae9cf52956dfe1bec73f77f81a3d05d3902b (diff) | |
| download | lwn-6e7c402590b75b6b45138792445ee0f0315a8473.tar.gz lwn-6e7c402590b75b6b45138792445ee0f0315a8473.zip | |
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 'kernel/sysctl.c')
| -rw-r--r-- | kernel/sysctl.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 4bc8e48434a7..357b68ba23ec 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -53,6 +53,7 @@ #ifdef CONFIG_X86 #include <asm/nmi.h> #include <asm/stacktrace.h> +#include <asm/io.h> #endif static int deprecated_sysctl_warning(struct __sysctl_args *args); @@ -727,6 +728,14 @@ static struct ctl_table kern_table[] = { .mode = 0644, .proc_handler = &proc_dointvec, }, + { + .ctl_name = CTL_UNNUMBERED, + .procname = "io_delay_type", + .data = &io_delay_type, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, #endif #if defined(CONFIG_MMU) { |