The patch titled
Subject: watchdog: introduce separate handlers for parameters in /proc/sys/kernel
has been added to the -mm tree. Its filename is
watchdog-introduce-separate-handlers-for-parameters-in-proc-sys-kernel.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/watchdog-introduce-separate-handlers-for-parameters-in-proc-sys-kernel.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/watchdog-introduce-separate-handlers-for-parameters-in-proc-sys-kernel.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Ulrich Obergfell <uobergfe@xxxxxxxxxx>
Subject: watchdog: introduce separate handlers for parameters in /proc/sys/kernel
Separate handlers for each watchdog parameter in /proc/sys/kernel replace
the proc_dowatchdog() function. Three of those handlers merely call
proc_watchdog_common() with one different argument.
Signed-off-by: Ulrich Obergfell <uobergfe@xxxxxxxxxx>
Signed-off-by: Don Zickus <dzickus@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/nmi.h | 8 +++++
kernel/watchdog.c | 59 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 67 insertions(+)
diff -puN include/linux/nmi.h~watchdog-introduce-separate-handlers-for-parameters-in-proc-sys-kernel include/linux/nmi.h
--- a/include/linux/nmi.h~watchdog-introduce-separate-handlers-for-parameters-in-proc-sys-kernel
+++ a/include/linux/nmi.h
@@ -74,6 +74,14 @@ extern int watchdog_user_enabled;
extern int watchdog_thresh;
extern int sysctl_softlockup_all_cpu_backtrace;
struct ctl_table;
+extern int proc_watchdog(struct ctl_table *, int ,
+ void __user *, size_t *, loff_t *);
+extern int proc_nmi_watchdog(struct ctl_table *, int ,
+ void __user *, size_t *, loff_t *);
+extern int proc_soft_watchdog(struct ctl_table *, int ,
+ void __user *, size_t *, loff_t *);
+extern int proc_watchdog_thresh(struct ctl_table *, int ,
+ void __user *, size_t *, loff_t *);
extern int proc_dowatchdog(struct ctl_table *, int ,
void __user *, size_t *, loff_t *);
#endif
diff -puN kernel/watchdog.c~watchdog-introduce-separate-handlers-for-parameters-in-proc-sys-kernel kernel/watchdog.c
--- a/kernel/watchdog.c~watchdog-introduce-separate-handlers-for-parameters-in-proc-sys-kernel
+++ a/kernel/watchdog.c
@@ -769,6 +769,65 @@ out:
}
/*
+ * /proc/sys/kernel/watchdog
+ */
+int proc_watchdog(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ return proc_watchdog_common(NMI_WATCHDOG_ENABLED|SOFT_WATCHDOG_ENABLED,
+ table, write, buffer, lenp, ppos);
+}
+
+/*
+ * /proc/sys/kernel/nmi_watchdog
+ */
+int proc_nmi_watchdog(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ return proc_watchdog_common(NMI_WATCHDOG_ENABLED,
+ table, write, buffer, lenp, ppos);
+}
+
+/*
+ * /proc/sys/kernel/soft_watchdog
+ */
+int proc_soft_watchdog(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ return proc_watchdog_common(SOFT_WATCHDOG_ENABLED,
+ table, write, buffer, lenp, ppos);
+}
+
+/*
+ * /proc/sys/kernel/watchdog_thresh
+ */
+int proc_watchdog_thresh(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ int err, old;
+
+ mutex_lock(&watchdog_proc_mutex);
+
+ old = ACCESS_ONCE(watchdog_thresh);
+ err = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
+
+ if (err || !write)
+ goto out;
+
+ /*
+ * Update the sample period.
+ * Restore 'watchdog_thresh' on failure.
+ */
+ set_sample_period();
+ err = proc_watchdog_update();
+ if (err)
+ watchdog_thresh = old;
+out:
+ mutex_unlock(&watchdog_proc_mutex);
+ return err;
+}
+
+/*
* proc handler for /proc/sys/kernel/nmi_watchdog,watchdog_thresh
*/
_
Patches currently in -mm which might be from uobergfe@xxxxxxxxxx are
watchdog-new-definitions-and-variables-initialization.patch
watchdog-introduce-the-proc_watchdog_update-function.patch
watchdog-move-definition-of-watchdog_proc_mutex-outside-of-proc_dowatchdog.patch
watchdog-introduce-the-proc_watchdog_common-function.patch
watchdog-introduce-separate-handlers-for-parameters-in-proc-sys-kernel.patch
watchdog-implement-error-handling-for-failure-to-set-up-hardware-perf-events.patch
watchdog-enable-the-new-user-interface-of-the-watchdog-mechanism.patch
watchdog-clean-up-some-function-names-and-arguments.patch
watchdog-introduce-the-hardlockup_detector_disable-function.patch
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