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pstore/platform: Make automatic updates interval configurable

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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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Anton Vorontsov 2012-05-26 06:20:28 -07:00 committed by Greg Kroah-Hartman
parent b8587daa75
commit a3f5f075c2
1 changed files with 11 additions and 4 deletions
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15
fs/pstore/platform.c
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@ -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);