softlockup: fix signedness

fix softlockup tunables signedness.

mark tunables read-mostly.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

2 files changed, 13 insertions, 13 deletions

diff --git a/kernel/softlockup.c b/kernel/softlockup.c
index 02f0ad534441..c1d76552446e 100644
--- a/kernel/softlockup.c
+++ b/kernel/softlockup.c
@@ -24,8 +24,8 @@ static DEFINE_PER_CPU(unsigned long, touch_timestamp);
 static DEFINE_PER_CPU(unsigned long, print_timestamp);
 static DEFINE_PER_CPU(struct task_struct *, watchdog_task);
 
-static int did_panic;
-int softlockup_thresh = 60;
+static int __read_mostly did_panic;
+unsigned long __read_mostly softlockup_thresh = 60;
 
 static int
 softlock_panic(struct notifier_block *this, unsigned long event, void *ptr)
@@ -121,14 +121,14 @@ void softlockup_tick(void)
 /*
  * Have a reasonable limit on the number of tasks checked:
  */
-unsigned long sysctl_hung_task_check_count = 1024;
+unsigned long __read_mostly sysctl_hung_task_check_count = 1024;
 
 /*
  * Zero means infinite timeout - no checking done:
  */
-unsigned long sysctl_hung_task_timeout_secs = 120;
+unsigned long __read_mostly sysctl_hung_task_timeout_secs = 120;
 
-long sysctl_hung_task_warnings = 10;
+unsigned long __read_mostly sysctl_hung_task_warnings = 10;
 
 /*
  * Only do the hung-tasks check on one CPU:
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 5418ef61e16e..8e96558cb8f3 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -772,9 +772,9 @@ static struct ctl_table kern_table[] = {
                 .ctl_name       = CTL_UNNUMBERED,
                 .procname       = "softlockup_thresh",
                 .data           = &softlockup_thresh,
-                .maxlen         = sizeof(int),
+                .maxlen         = sizeof(unsigned long),
                 .mode           = 0644,
-                .proc_handler   = &proc_dointvec_minmax,
+                .proc_handler   = &proc_doulongvec_minmax,
                 .strategy       = &sysctl_intvec,
                 .extra1         = &one,
                 .extra2         = &sixty,
@@ -783,27 +783,27 @@ static struct ctl_table kern_table[] = {
                 .ctl_name       = CTL_UNNUMBERED,
                 .procname       = "hung_task_check_count",
                 .data           = &sysctl_hung_task_check_count,
-                .maxlen         = sizeof(int),
+                .maxlen         = sizeof(unsigned long),
                 .mode           = 0644,
-                .proc_handler   = &proc_dointvec_minmax,
+                .proc_handler   = &proc_doulongvec_minmax,
                 .strategy       = &sysctl_intvec,
         },
         {
                 .ctl_name       = CTL_UNNUMBERED,
                 .procname       = "hung_task_timeout_secs",
                 .data           = &sysctl_hung_task_timeout_secs,
-                .maxlen         = sizeof(int),
+                .maxlen         = sizeof(unsigned long),
                 .mode           = 0644,
-                .proc_handler   = &proc_dointvec_minmax,
+                .proc_handler   = &proc_doulongvec_minmax,
                 .strategy       = &sysctl_intvec,
         },
         {
                 .ctl_name       = CTL_UNNUMBERED,
                 .procname       = "hung_task_warnings",
                 .data           = &sysctl_hung_task_warnings,
-                .maxlen         = sizeof(int),
+                .maxlen         = sizeof(unsigned long),
                 .mode           = 0644,
-                .proc_handler   = &proc_dointvec_minmax,
+                .proc_handler   = &proc_doulongvec_minmax,
                 .strategy       = &sysctl_intvec,
         },
 #endif