From 90739081ef8d5495d50abba9c5d333be9acd872a Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Fri, 25 Jan 2008 21:08:34 +0100 Subject: softlockup: fix signedness fix softlockup tunables signedness. mark tunables read-mostly. Signed-off-by: Ingo Molnar --- include/linux/sched.h | 4 ++-- kernel/softlockup.c | 10 +++++----- kernel/sysctl.c | 16 ++++++++-------- 3 files changed, 15 insertions(+), 15 deletions(-) diff --git a/include/linux/sched.h b/include/linux/sched.h index dfc76e172f3f..53534f90a96a 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -269,10 +269,10 @@ extern void softlockup_tick(void); extern void spawn_softlockup_task(void); extern void touch_softlockup_watchdog(void); extern void touch_all_softlockup_watchdogs(void); -extern int softlockup_thresh; +extern unsigned long softlockup_thresh; extern unsigned long sysctl_hung_task_check_count; extern unsigned long sysctl_hung_task_timeout_secs; -extern long sysctl_hung_task_warnings; +extern unsigned long sysctl_hung_task_warnings; #else static inline void softlockup_tick(void) { 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 -- cgit v1.2.3-59-g8ed1b