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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 /kernel/sysctl.c
parentb02aae9cf52956dfe1bec73f77f81a3d05d3902b (diff)
downloadlwn-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.c9
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)
{