Messages in this thread Patch in this message | | | Date | Tue, 29 Apr 2008 10:33:55 +0900 | From | Hidetoshi Seto <> | Subject | [PATCH 3/3] stop_machine: add stopmachine_timeout sysctl entry |
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There would be some system which cannot accept the arbitrary timeout value(= 5sec).
This patch allow us to change the value via sysctl.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> --- kernel/stop_machine.c | 2 +- kernel/sysctl.c | 10 ++++++++++ 2 files changed, 11 insertions(+), 1 deletions(-)
diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c index cd2ba88..cc6c8ec 100644 --- a/kernel/stop_machine.c +++ b/kernel/stop_machine.c @@ -31,7 +31,7 @@ static unsigned int stopmachine_num_threads; static atomic_t stopmachine_thread_ack; static atomic_t stopmachine_busy_exit; -static unsigned long stopmachine_timeout = 5; /* secs, arbitrary */ +unsigned long stopmachine_timeout = 5; /* secs, arbitrary */ static int stopmachine(void *cpu) { diff --git a/kernel/sysctl.c b/kernel/sysctl.c index fd33648..fe489a7 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -80,6 +80,7 @@ extern int compat_log; extern int maps_protect; extern int sysctl_stat_interval; extern int latencytop_enabled; +extern unsigned long stopmachine_timeout; /* Constants used for minimum and maximum */ #if defined(CONFIG_DETECT_SOFTLOCKUP) || defined(CONFIG_HIGHMEM) @@ -809,6 +810,15 @@ static struct ctl_table kern_table[] = { .proc_handler = &proc_dostring, .strategy = &sysctl_string, }, + { + .ctl_name = CTL_UNNUMBERED, + .procname = "stopmachine_timeout", + .data = &stopmachine_timeout, + .maxlen = sizeof(unsigned long), + .mode = 0644, + .proc_handler = &proc_doulongvec_minmax, + .strategy = &sysctl_intvec, + }, /* * NOTE: do not add new entries to this table unless you have read * Documentation/sysctl/ctl_unnumbered.txt
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