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-rw-r--r--Documentation/sysctl/kernel.txt10
-rw-r--r--include/linux/acpi.h3
-rw-r--r--include/linux/sysctl.h1
-rw-r--r--kernel/sysctl.c16
4 files changed, 25 insertions, 5 deletions
diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt
index 9f11d36a8c1..b0c7ab93dcb 100644
--- a/Documentation/sysctl/kernel.txt
+++ b/Documentation/sysctl/kernel.txt
@@ -16,6 +16,7 @@ before actually making adjustments.
Currently, these files might (depending on your configuration)
show up in /proc/sys/kernel:
+- acpi_video_flags
- acct
- core_pattern
- core_uses_pid
@@ -57,6 +58,15 @@ show up in /proc/sys/kernel:
==============================================================
+acpi_video_flags:
+
+flags
+
+See Doc*/kernel/power/video.txt, it allows mode of video boot to be
+set during run time.
+
+==============================================================
+
acct:
highwater lowwater frequency
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 84d3d9f034c..d3bc25e6d27 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -427,7 +427,8 @@ extern int acpi_mp_config;
extern struct acpi_table_mcfg_config *pci_mmcfg_config;
extern int pci_mmcfg_config_num;
-extern int sbf_port ;
+extern int sbf_port;
+extern unsigned long acpi_video_flags;
#else /* !CONFIG_ACPI */
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 32a4139c4ad..0e92bf7ec28 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -146,6 +146,7 @@ enum
KERN_RANDOMIZE=68, /* int: randomize virtual address space */
KERN_SETUID_DUMPABLE=69, /* int: behaviour of dumps for setuid core */
KERN_SPIN_RETRY=70, /* int: number of spinlock retries */
+ KERN_ACPI_VIDEO_FLAGS=71, /* int: flags for setting up video after ACPI sleep */
};
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 7654d55c47f..ebc41bf22f1 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -44,14 +44,12 @@
#include <linux/limits.h>
#include <linux/dcache.h>
#include <linux/syscalls.h>
+#include <linux/nfs_fs.h>
+#include <linux/acpi.h>
#include <asm/uaccess.h>
#include <asm/processor.h>
-#ifdef CONFIG_ROOT_NFS
-#include <linux/nfs_fs.h>
-#endif
-
#if defined(CONFIG_SYSCTL)
/* External variables not in a header file. */
@@ -656,6 +654,16 @@ static ctl_table kern_table[] = {
.proc_handler = &proc_dointvec,
},
#endif
+#ifdef CONFIG_ACPI_SLEEP
+ {
+ .ctl_name = KERN_ACPI_VIDEO_FLAGS,
+ .procname = "acpi_video_flags",
+ .data = &acpi_video_flags,
+ .maxlen = sizeof (unsigned long),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+#endif
{ .ctl_name = 0 }
};