There is no behavioural change, the default value is still 60 seconds.
Signed-off-by: Anton Vorontsov anton.vorontsov@linaro.org Acked-by: Kees Cook keescook@chromium.org --- fs/pstore/platform.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index 61461ed..34ca314 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -31,6 +31,7 @@ #include <linux/slab.h> #include <linux/uaccess.h> #include <linux/hardirq.h> +#include <linux/jiffies.h> #include <linux/workqueue.h>
#include "internal.h" @@ -40,7 +41,10 @@ * whether the system is actually still running well enough * to let someone see the entry */ -#define PSTORE_INTERVAL (60 * HZ) +static int pstore_update_ms = 60000; +module_param_named(update_ms, pstore_update_ms, int, 0600); +MODULE_PARM_DESC(update_ms, "milliseconds before pstore updates its content " + "(default is 60000; -1 means runtime updates are disabled)");
static int pstore_new_entry;
@@ -231,8 +235,11 @@ int pstore_register(struct pstore_info *psi) kmsg_dump_register(&pstore_dumper); pstore_register_console();
- pstore_timer.expires = jiffies + PSTORE_INTERVAL; - add_timer(&pstore_timer); + if (pstore_update_ms >= 0) { + pstore_timer.expires = jiffies + + msecs_to_jiffies(pstore_update_ms); + add_timer(&pstore_timer); + }
return 0; } @@ -291,7 +298,7 @@ static void pstore_timefunc(unsigned long dummy) schedule_work(&pstore_work); }
- mod_timer(&pstore_timer, jiffies + PSTORE_INTERVAL); + mod_timer(&pstore_timer, jiffies + msecs_to_jiffies(pstore_update_ms)); }
module_param(backend, charp, 0444);