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authorVladimir Zapolskiy <vladimir_zapolskiy@mentor.com>2016-10-07 15:39:57 +0300
committerWim Van Sebroeck <wim@iguana.be>2016-10-08 11:27:24 +0300
commit89873a711dd20b614abb6e4038fb4b5462f4c701 (patch)
tree88fadc0684b9936a9c60eae9cf91ccacd409003e /drivers/watchdog/watchdog_pretimeout.c
parent53f96cee1aff74c8ee3c5f7a25df0c01d7117eeb (diff)
downloadlinux-89873a711dd20b614abb6e4038fb4b5462f4c701.tar.xz
watchdog: pretimeout: add pretimeout_available_governors attribute
The change adds an option to a user with CONFIG_WATCHDOG_SYSFS and CONFIG_WATCHDOG_PRETIMEOUT_GOV enabled to get information about all registered watchdog pretimeout governors by reading watchdog device attribute named "pretimeout_available_governors". Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog/watchdog_pretimeout.c')
-rw-r--r--drivers/watchdog/watchdog_pretimeout.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/watchdog/watchdog_pretimeout.c b/drivers/watchdog/watchdog_pretimeout.c
index c9e4a0326938..9db07bfb4334 100644
--- a/drivers/watchdog/watchdog_pretimeout.c
+++ b/drivers/watchdog/watchdog_pretimeout.c
@@ -52,6 +52,21 @@ static struct governor_priv *find_governor_by_name(const char *gov_name)
return NULL;
}
+int watchdog_pretimeout_available_governors_get(char *buf)
+{
+ struct governor_priv *priv;
+ int count = 0;
+
+ mutex_lock(&governor_lock);
+
+ list_for_each_entry(priv, &governor_list, entry)
+ count += sprintf(buf + count, "%s\n", priv->gov->name);
+
+ mutex_unlock(&governor_lock);
+
+ return count;
+}
+
int watchdog_pretimeout_governor_get(struct watchdog_device *wdd, char *buf)
{
int count = 0;