Merge branch 'master' into for-2.6.35

[pandora-kernel.git] / kernel / sysctl.c

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index bcfb79e..18821e7 100644 (file)
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -52,6 +52,7 @@
 #include <linux/slow-work.h>
 #include <linux/perf_event.h>
 #include <linux/kprobes.h>
+#include <linux/pipe_fs_i.h>
 
 #include <asm/uaccess.h>
 #include <asm/processor.h>
@@ -163,6 +164,27 @@ static int proc_taint(struct ctl_table *table, int write,
                               void __user *buffer, size_t *lenp, loff_t *ppos);
 #endif
 
+#ifdef CONFIG_MAGIC_SYSRQ
+static int __sysrq_enabled; /* Note: sysrq code ises it's own private copy */
+
+static int sysrq_sysctl_handler(ctl_table *table, int write,
+                               void __user *buffer, size_t *lenp,
+                               loff_t *ppos)
+{
+       int error;
+
+       error = proc_dointvec(table, write, buffer, lenp, ppos);
+       if (error)
+               return error;
+
+       if (write)
+               sysrq_toggle_support(__sysrq_enabled);
+
+       return 0;
+}
+
+#endif
+
 static struct ctl_table root_table[];
 static struct ctl_table_root sysctl_table_root;
 static struct ctl_table_header root_table_header = {
@@ -567,7 +589,7 @@ static struct ctl_table kern_table[] = {
                .data           = &__sysrq_enabled,
                .maxlen         = sizeof (int),
                .mode           = 0644,
-               .proc_handler   = proc_dointvec,
+               .proc_handler   = sysrq_sysctl_handler,
        },
 #endif
 #ifdef CONFIG_PROC_SYSCTL
@@ -621,7 +643,7 @@ static struct ctl_table kern_table[] = {
 #endif
        {
                .procname       = "userprocess_debug",
-               .data           = &sysctl_userprocess_debug,
+               .data           = &show_unhandled_signals,
                .maxlen         = sizeof(int),
                .mode           = 0644,
                .proc_handler   = proc_dointvec,
@@ -1423,6 +1445,14 @@ static struct ctl_table fs_table[] = {
                .child          = binfmt_misc_table,
        },
 #endif
+       {
+               .procname       = "pipe-max-pages",
+               .data           = &pipe_max_pages,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec_minmax,
+               .extra1         = &two,
+       },
 /*
  * NOTE: do not add new entries to this table unless you have read
  * Documentation/sysctl/ctl_unnumbered.txt
@@ -1431,7 +1461,8 @@ static struct ctl_table fs_table[] = {
 };
 
 static struct ctl_table debug_table[] = {
-#if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_SPARC)
+#if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || \
+    defined(CONFIG_S390)
        {
                .procname       = "exception-trace",
                .data           = &show_unhandled_signals,