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x86: restore vsyscall64 prochandler 

a recent fix:

  commit ce28b9864b
  Author: Thomas Gleixner <tglx@linutronix.de>
  Date:   Wed Feb 20 23:57:30 2008 +0100

    x86: fix vsyscall wreckage

removed the broken /kernel/vsyscall64 handler completely.
This triggers the following debug check:

  sysctl table check failed: /kernel/vsyscall64  No proc_handler

Restore the sane part of the proc handler.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Thomas Gleixner 2008-02-27 09:39:52 +01:00 committed by Ingo Molnar
parent cded932b75
commit d67bbacb4b
1 changed files with 10 additions and 1 deletions
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11
arch/x86/kernel/vsyscall_64.c
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@ -222,10 +222,19 @@ long __vsyscall(3) venosys_1(void)
} }
#ifdef CONFIG_SYSCTL #ifdef CONFIG_SYSCTL
static int
vsyscall_sysctl_change(ctl_table *ctl, int write, struct file * filp,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
return proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
}
static ctl_table kernel_table2[] = { static ctl_table kernel_table2[] = {
{ .procname = "vsyscall64", { .procname = "vsyscall64",
.data = &vsyscall_gtod_data.sysctl_enabled, .maxlen = sizeof(int), .data = &vsyscall_gtod_data.sysctl_enabled, .maxlen = sizeof(int),
.mode = 0644 }, .mode = 0644,
.proc_handler = vsyscall_sysctl_change },
{} {}
}; };