io-wq: provide a way to limit max number of workers

[linux-2.6-microblaze.git] / include / linux / serial_core.h

diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 52d7fb9..c58cc14 100644 (file)
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -518,6 +518,25 @@ static inline void uart_unlock_and_check_sysrq(struct uart_port *port)
        if (sysrq_ch)
                handle_sysrq(sysrq_ch);
 }
+
+static inline void uart_unlock_and_check_sysrq_irqrestore(struct uart_port *port,
+               unsigned long flags)
+{
+       int sysrq_ch;
+
+       if (!port->has_sysrq) {
+               spin_unlock_irqrestore(&port->lock, flags);
+               return;
+       }
+
+       sysrq_ch = port->sysrq_ch;
+       port->sysrq_ch = 0;
+
+       spin_unlock_irqrestore(&port->lock, flags);
+
+       if (sysrq_ch)
+               handle_sysrq(sysrq_ch);
+}
 #else  /* CONFIG_MAGIC_SYSRQ_SERIAL */
 static inline int uart_handle_sysrq_char(struct uart_port *port, unsigned int ch)
 {
@@ -531,6 +550,11 @@ static inline void uart_unlock_and_check_sysrq(struct uart_port *port)
 {
        spin_unlock(&port->lock);
 }
+static inline void uart_unlock_and_check_sysrq_irqrestore(struct uart_port *port,
+               unsigned long flags)
+{
+       spin_unlock_irqrestore(&port->lock, flags);
+}
 #endif /* CONFIG_MAGIC_SYSRQ_SERIAL */
 
 /*