diff mbox

[v5,3/3] watchdog: Allow setting action on the fly

Message ID 35d6ce6fe3d357122d73b8272bc8198134c74104.1504771369.git.mprivozn@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Michal Prívozník Sept. 7, 2017, 8:05 a.m. UTC
Currently, the only time that users can set watchdog action is at
the start as all we expose is this -watchdog-action command line
argument. This is suboptimal when users want to plug the device
later via monitor. Alternatively, they might want to change the
action for already existing device on the fly.

Inspired by: https://bugzilla.redhat.com/show_bug.cgi?id=1447169

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
---
 hw/watchdog/watchdog.c | 8 +++++++-
 qapi-schema.json       | 9 +++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

Comments

Daniel P. Berrangé Sept. 12, 2017, 1:04 p.m. UTC | #1
On Thu, Sep 07, 2017 at 10:05:26AM +0200, Michal Privoznik wrote:
> Currently, the only time that users can set watchdog action is at
> the start as all we expose is this -watchdog-action command line
> argument. This is suboptimal when users want to plug the device
> later via monitor. Alternatively, they might want to change the
> action for already existing device on the fly.
> 
> Inspired by: https://bugzilla.redhat.com/show_bug.cgi?id=1447169
> 
> Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
> ---
>  hw/watchdog/watchdog.c | 8 +++++++-
>  qapi-schema.json       | 9 +++++++++
>  2 files changed, 16 insertions(+), 1 deletion(-)
> 
> diff --git a/hw/watchdog/watchdog.c b/hw/watchdog/watchdog.c
> index 0d3eeed187..670114ecfe 100644
> --- a/hw/watchdog/watchdog.c
> +++ b/hw/watchdog/watchdog.c
> @@ -29,6 +29,7 @@
>  #include "qapi-event.h"
>  #include "hw/nmi.h"
>  #include "qemu/help_option.h"
> +#include "qmp-commands.h"
>  
>  static WatchdogAction watchdog_action = WATCHDOG_ACTION_RESET;
>  static QLIST_HEAD(watchdog_list, WatchdogTimerModel) watchdog_list;
> @@ -85,7 +86,7 @@ int select_watchdog_action(const char *p)
>      g_free(qapi_value);
>      if (action < 0)
>          return -1;
> -    watchdog_action = action;
> +    qmp_watchdog_set_action(action, &error_abort);
>      return 0;
>  }
>  
> @@ -142,3 +143,8 @@ void watchdog_perform_action(void)
>          assert(0);
>      }
>  }
> +
> +void qmp_watchdog_set_action(WatchdogAction action, Error **errp)
> +{
> +    watchdog_action = action;
> +}
> diff --git a/qapi-schema.json b/qapi-schema.json
> index f3af2cb851..f5db401838 100644
> --- a/qapi-schema.json
> +++ b/qapi-schema.json
> @@ -3143,3 +3143,12 @@
>  # Since 2.9
>  ##
>  { 'command': 'query-vm-generation-id', 'returns': 'GuidInfo' }
> +
> +##
> +# @watchdog-set-action:
> +#
> +# Set watchdog action
> +#
> +# Since 2.11

Not sure how much it matters, but the standard syntax has a ':' following
the 'Since' word

I do notice that query-vm-generation-id violates this rule though, which
I what I guess you copied ?

> +##
> +{ 'command': 'watchdog-set-action', 'data' : {'action': 'WatchdogAction'} }
> --

Assuming the ':' is added in next posting (or by the committer), then

Reviewed-by: Daniel P. Berrange <berrange@redhat.com>

Regards,
Daniel
diff mbox

Patch

diff --git a/hw/watchdog/watchdog.c b/hw/watchdog/watchdog.c
index 0d3eeed187..670114ecfe 100644
--- a/hw/watchdog/watchdog.c
+++ b/hw/watchdog/watchdog.c
@@ -29,6 +29,7 @@ 
 #include "qapi-event.h"
 #include "hw/nmi.h"
 #include "qemu/help_option.h"
+#include "qmp-commands.h"
 
 static WatchdogAction watchdog_action = WATCHDOG_ACTION_RESET;
 static QLIST_HEAD(watchdog_list, WatchdogTimerModel) watchdog_list;
@@ -85,7 +86,7 @@  int select_watchdog_action(const char *p)
     g_free(qapi_value);
     if (action < 0)
         return -1;
-    watchdog_action = action;
+    qmp_watchdog_set_action(action, &error_abort);
     return 0;
 }
 
@@ -142,3 +143,8 @@  void watchdog_perform_action(void)
         assert(0);
     }
 }
+
+void qmp_watchdog_set_action(WatchdogAction action, Error **errp)
+{
+    watchdog_action = action;
+}
diff --git a/qapi-schema.json b/qapi-schema.json
index f3af2cb851..f5db401838 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -3143,3 +3143,12 @@ 
 # Since 2.9
 ##
 { 'command': 'query-vm-generation-id', 'returns': 'GuidInfo' }
+
+##
+# @watchdog-set-action:
+#
+# Set watchdog action
+#
+# Since 2.11
+##
+{ 'command': 'watchdog-set-action', 'data' : {'action': 'WatchdogAction'} }