softlockup: fix signedness
fix softlockup tunables signedness. mark tunables read-mostly. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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9745512ce7
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90739081ef
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@ -269,10 +269,10 @@ extern void softlockup_tick(void);
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extern void spawn_softlockup_task(void);
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extern void spawn_softlockup_task(void);
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extern void touch_softlockup_watchdog(void);
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extern void touch_softlockup_watchdog(void);
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extern void touch_all_softlockup_watchdogs(void);
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extern void touch_all_softlockup_watchdogs(void);
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extern int softlockup_thresh;
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extern unsigned long softlockup_thresh;
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extern unsigned long sysctl_hung_task_check_count;
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extern unsigned long sysctl_hung_task_check_count;
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extern unsigned long sysctl_hung_task_timeout_secs;
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extern unsigned long sysctl_hung_task_timeout_secs;
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extern long sysctl_hung_task_warnings;
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extern unsigned long sysctl_hung_task_warnings;
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#else
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#else
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static inline void softlockup_tick(void)
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static inline void softlockup_tick(void)
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{
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{
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@ -24,8 +24,8 @@ static DEFINE_PER_CPU(unsigned long, touch_timestamp);
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static DEFINE_PER_CPU(unsigned long, print_timestamp);
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static DEFINE_PER_CPU(unsigned long, print_timestamp);
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static DEFINE_PER_CPU(struct task_struct *, watchdog_task);
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static DEFINE_PER_CPU(struct task_struct *, watchdog_task);
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static int did_panic;
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static int __read_mostly did_panic;
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int softlockup_thresh = 60;
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unsigned long __read_mostly softlockup_thresh = 60;
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static int
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static int
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softlock_panic(struct notifier_block *this, unsigned long event, void *ptr)
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softlock_panic(struct notifier_block *this, unsigned long event, void *ptr)
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@ -121,14 +121,14 @@ void softlockup_tick(void)
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/*
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/*
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* Have a reasonable limit on the number of tasks checked:
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* Have a reasonable limit on the number of tasks checked:
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*/
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*/
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unsigned long sysctl_hung_task_check_count = 1024;
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unsigned long __read_mostly sysctl_hung_task_check_count = 1024;
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/*
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/*
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* Zero means infinite timeout - no checking done:
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* Zero means infinite timeout - no checking done:
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*/
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*/
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unsigned long sysctl_hung_task_timeout_secs = 120;
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unsigned long __read_mostly sysctl_hung_task_timeout_secs = 120;
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long sysctl_hung_task_warnings = 10;
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unsigned long __read_mostly sysctl_hung_task_warnings = 10;
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/*
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/*
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* Only do the hung-tasks check on one CPU:
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* Only do the hung-tasks check on one CPU:
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@ -772,9 +772,9 @@ static struct ctl_table kern_table[] = {
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.ctl_name = CTL_UNNUMBERED,
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.ctl_name = CTL_UNNUMBERED,
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.procname = "softlockup_thresh",
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.procname = "softlockup_thresh",
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.data = &softlockup_thresh,
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.data = &softlockup_thresh,
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.maxlen = sizeof(int),
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.maxlen = sizeof(unsigned long),
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.mode = 0644,
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.mode = 0644,
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.proc_handler = &proc_dointvec_minmax,
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.proc_handler = &proc_doulongvec_minmax,
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.strategy = &sysctl_intvec,
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.strategy = &sysctl_intvec,
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.extra1 = &one,
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.extra1 = &one,
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.extra2 = &sixty,
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.extra2 = &sixty,
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@ -783,27 +783,27 @@ static struct ctl_table kern_table[] = {
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.ctl_name = CTL_UNNUMBERED,
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.ctl_name = CTL_UNNUMBERED,
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.procname = "hung_task_check_count",
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.procname = "hung_task_check_count",
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.data = &sysctl_hung_task_check_count,
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.data = &sysctl_hung_task_check_count,
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.maxlen = sizeof(int),
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.maxlen = sizeof(unsigned long),
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.mode = 0644,
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.mode = 0644,
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.proc_handler = &proc_dointvec_minmax,
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.proc_handler = &proc_doulongvec_minmax,
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.strategy = &sysctl_intvec,
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.strategy = &sysctl_intvec,
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},
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},
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{
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{
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.ctl_name = CTL_UNNUMBERED,
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.ctl_name = CTL_UNNUMBERED,
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.procname = "hung_task_timeout_secs",
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.procname = "hung_task_timeout_secs",
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.data = &sysctl_hung_task_timeout_secs,
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.data = &sysctl_hung_task_timeout_secs,
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.maxlen = sizeof(int),
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.maxlen = sizeof(unsigned long),
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.mode = 0644,
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.mode = 0644,
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.proc_handler = &proc_dointvec_minmax,
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.proc_handler = &proc_doulongvec_minmax,
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.strategy = &sysctl_intvec,
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.strategy = &sysctl_intvec,
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},
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},
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{
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{
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.ctl_name = CTL_UNNUMBERED,
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.ctl_name = CTL_UNNUMBERED,
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.procname = "hung_task_warnings",
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.procname = "hung_task_warnings",
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.data = &sysctl_hung_task_warnings,
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.data = &sysctl_hung_task_warnings,
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.maxlen = sizeof(int),
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.maxlen = sizeof(unsigned long),
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.mode = 0644,
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.mode = 0644,
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.proc_handler = &proc_dointvec_minmax,
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.proc_handler = &proc_doulongvec_minmax,
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.strategy = &sysctl_intvec,
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.strategy = &sysctl_intvec,
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},
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},
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#endif
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#endif
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