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authorAnton Vorontsov <anton.vorontsov@linaro.org>2012-05-26 06:20:28 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-06-13 16:59:37 -0700
commita3f5f075c2e2c52c9c656c54ea77ceff5b2e1e25 (patch)
treef7d838b53b635b3f19100db6a45f23c101addbc4 /fs/pstore
parentb8587daa756141da776e3d4c3a5a315f5af78708 (diff)
downloadop-kernel-dev-a3f5f075c2e2c52c9c656c54ea77ceff5b2e1e25.zip
op-kernel-dev-a3f5f075c2e2c52c9c656c54ea77ceff5b2e1e25.tar.gz
pstore/platform: Make automatic updates interval configurable
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>
Diffstat (limited to 'fs/pstore')
-rw-r--r--fs/pstore/platform.c15
1 files 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);
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