[PATCH v3 1/4] xen/console: use bool as return value from printk_ratelimit()

[dmukhin@xxxxxxxx]

From: Denis Mukhin <dmukhin@xxxxxxxx> 

{__,}printk_ratelimit() are predicates. Make that pronounced by updating the
return value to boolean.

Not a functional change.

Signed-off-by: Denis Mukhin <dmukhin@xxxxxxxx>
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
Changes since v2:
- rebased
---
 xen/drivers/char/console.c | 9 +++++----
 xen/include/xen/lib.h      | 6 +++---
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/xen/drivers/char/console.c b/xen/drivers/char/console.c
index dbda7f259668..5d395f882e08 100644
--- a/xen/drivers/char/console.c
+++ b/xen/drivers/char/console.c
@@ -1270,7 +1270,8 @@ void console_end_sync(void)
  * This enforces a rate limit: not more than one kernel message
  * every printk_ratelimit_ms (millisecs).
  */
-int __printk_ratelimit(unsigned int ratelimit_ms, unsigned int ratelimit_burst)
+bool __printk_ratelimit(unsigned int ratelimit_ms,
+                        unsigned int ratelimit_burst)
 {
     static DEFINE_SPINLOCK(ratelimit_lock);
     static unsigned long toks = 10 * 5 * 1000;
@@ -1309,11 +1310,11 @@ int __printk_ratelimit(unsigned int ratelimit_ms, 
unsigned int ratelimit_burst)
             rspin_unlock(&console_lock);
         }
         local_irq_restore(flags);
-        return 1;
+        return true;
     }
     missed++;
     spin_unlock_irqrestore(&ratelimit_lock, flags);
-    return 0;
+    return false;
 }
 
 /* Minimum time in ms between messages */
@@ -1322,7 +1323,7 @@ static const unsigned int printk_ratelimit_ms = 5 * 1000;
 /* Number of messages we send before ratelimiting */
 static const unsigned int printk_ratelimit_burst = 10;
 
-int printk_ratelimit(void)
+bool printk_ratelimit(void)
 {
     return __printk_ratelimit(printk_ratelimit_ms, printk_ratelimit_burst);
 }
diff --git a/xen/include/xen/lib.h b/xen/include/xen/lib.h
index bb0fd446b484..3c545ff33c61 100644
--- a/xen/include/xen/lib.h
+++ b/xen/include/xen/lib.h
@@ -82,9 +82,9 @@ extern void guest_printk(const struct domain *d, const char 
*fmt, ...)
     __attribute__ ((format (printf, 2, 3)));
 extern void noreturn panic(const char *fmt, ...)
     __attribute__ ((format (printf, 1, 2)));
-extern int __printk_ratelimit(unsigned int ratelimit_ms,
-                              unsigned int ratelimit_burst);
-extern int printk_ratelimit(void);
+extern bool __printk_ratelimit(unsigned int ratelimit_ms,
+                               unsigned int ratelimit_burst);
+extern bool printk_ratelimit(void);
 
 #define gprintk(lvl, fmt, args...) \
     printk(XENLOG_GUEST lvl "%pv " fmt, current, ## args)
-- 
2.54.0