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From: Dmitry Safonov <dima@arista.com>
To: linux-kernel@vger.kernel.org
Cc: Dmitry Safonov <0x7f454c46@gmail.com>,
	Dmitry Safonov <dima@arista.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jiri Slaby <jslaby@suse.com>,
	Vasiliy Khoruzhick <vasilykh@arista.com>,
	linux-serial@vger.kernel.org
Subject: [PATCH-next 1/3] serial_core: Move sysrq functions from header file
Date: Thu,  9 Jan 2020 21:54:42 +0000	[thread overview]
Message-ID: <20200109215444.95995-2-dima@arista.com> (raw)
In-Reply-To: <20200109215444.95995-1-dima@arista.com>

It's not worth to have them in every serial driver and I'm about to add
another helper function.

Signed-off-by: Dmitry Safonov <dima@arista.com>
---
 drivers/tty/serial/serial_core.c | 83 +++++++++++++++++++++++++++++++
 include/linux/serial_core.h      | 84 ++------------------------------
 2 files changed, 88 insertions(+), 79 deletions(-)

diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 7c2782785736..6ac9dfed3423 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -3081,6 +3081,89 @@ void uart_insert_char(struct uart_port *port, unsigned int status,
 }
 EXPORT_SYMBOL_GPL(uart_insert_char);
 
+int uart_handle_sysrq_char(struct uart_port *port, unsigned int ch)
+{
+	if (!IS_ENABLED(CONFIG_MAGIC_SYSRQ_SERIAL))
+		return 0;
+
+	if (!port->has_sysrq || !port->sysrq)
+		return 0;
+
+	if (ch && time_before(jiffies, port->sysrq)) {
+		handle_sysrq(ch);
+		port->sysrq = 0;
+		return 1;
+	}
+	port->sysrq = 0;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(uart_handle_sysrq_char);
+
+int uart_prepare_sysrq_char(struct uart_port *port, unsigned int ch)
+{
+	if (!IS_ENABLED(CONFIG_MAGIC_SYSRQ_SERIAL))
+		return 0;
+
+	if (!port->has_sysrq || !port->sysrq)
+		return 0;
+
+	if (ch && time_before(jiffies, port->sysrq)) {
+		port->sysrq_ch = ch;
+		port->sysrq = 0;
+		return 1;
+	}
+	port->sysrq = 0;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(uart_prepare_sysrq_char);
+
+void uart_unlock_and_check_sysrq(struct uart_port *port, unsigned long irqflags)
+{
+	int sysrq_ch;
+
+	if (!port->has_sysrq) {
+		spin_unlock_irqrestore(&port->lock, irqflags);
+		return;
+	}
+
+	sysrq_ch = port->sysrq_ch;
+	port->sysrq_ch = 0;
+
+	spin_unlock_irqrestore(&port->lock, irqflags);
+
+	if (sysrq_ch)
+		handle_sysrq(sysrq_ch);
+}
+EXPORT_SYMBOL_GPL(uart_unlock_and_check_sysrq);
+
+/*
+ * We do the SysRQ and SAK checking like this...
+ */
+int uart_handle_break(struct uart_port *port)
+{
+	struct uart_state *state = port->state;
+
+	if (port->handle_break)
+		port->handle_break(port);
+
+	if (port->has_sysrq) {
+		if (port->cons && port->cons->index == port->line) {
+			if (!port->sysrq) {
+				port->sysrq = jiffies + HZ*5;
+				return 1;
+			}
+			port->sysrq = 0;
+		}
+	}
+
+	if (port->flags & UPF_SAK)
+		do_SAK(state->port.tty);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(uart_handle_break);
+
 EXPORT_SYMBOL(uart_write_wakeup);
 EXPORT_SYMBOL(uart_register_driver);
 EXPORT_SYMBOL(uart_unregister_driver);
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 9cf1682dc580..255e86a474e9 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -460,85 +460,11 @@ extern void uart_handle_cts_change(struct uart_port *uport,
 extern void uart_insert_char(struct uart_port *port, unsigned int status,
 		 unsigned int overrun, unsigned int ch, unsigned int flag);
 
-static inline int
-uart_handle_sysrq_char(struct uart_port *port, unsigned int ch)
-{
-	if (!IS_ENABLED(CONFIG_MAGIC_SYSRQ_SERIAL))
-		return 0;
-
-	if (!port->has_sysrq || !port->sysrq)
-		return 0;
-
-	if (ch && time_before(jiffies, port->sysrq)) {
-		handle_sysrq(ch);
-		port->sysrq = 0;
-		return 1;
-	}
-	port->sysrq = 0;
-
-	return 0;
-}
-static inline int
-uart_prepare_sysrq_char(struct uart_port *port, unsigned int ch)
-{
-	if (!IS_ENABLED(CONFIG_MAGIC_SYSRQ_SERIAL))
-		return 0;
-
-	if (!port->has_sysrq || !port->sysrq)
-		return 0;
-
-	if (ch && time_before(jiffies, port->sysrq)) {
-		port->sysrq_ch = ch;
-		port->sysrq = 0;
-		return 1;
-	}
-	port->sysrq = 0;
-
-	return 0;
-}
-static inline void
-uart_unlock_and_check_sysrq(struct uart_port *port, unsigned long irqflags)
-{
-	int sysrq_ch;
-
-	if (!port->has_sysrq) {
-		spin_unlock_irqrestore(&port->lock, irqflags);
-		return;
-	}
-
-	sysrq_ch = port->sysrq_ch;
-	port->sysrq_ch = 0;
-
-	spin_unlock_irqrestore(&port->lock, irqflags);
-
-	if (sysrq_ch)
-		handle_sysrq(sysrq_ch);
-}
-
-/*
- * We do the SysRQ and SAK checking like this...
- */
-static inline int uart_handle_break(struct uart_port *port)
-{
-	struct uart_state *state = port->state;
-
-	if (port->handle_break)
-		port->handle_break(port);
-
-	if (port->has_sysrq) {
-		if (port->cons && port->cons->index == port->line) {
-			if (!port->sysrq) {
-				port->sysrq = jiffies + HZ*5;
-				return 1;
-			}
-			port->sysrq = 0;
-		}
-	}
-
-	if (port->flags & UPF_SAK)
-		do_SAK(state->port.tty);
-	return 0;
-}
+extern int uart_handle_sysrq_char(struct uart_port *port, unsigned int ch);
+extern int uart_prepare_sysrq_char(struct uart_port *port, unsigned int ch);
+extern void uart_unlock_and_check_sysrq(struct uart_port *port,
+					unsigned long irqflags);
+extern int uart_handle_break(struct uart_port *port);
 
 /*
  *	UART_ENABLE_MS - determine if port should enable modem status irqs
-- 
2.24.1


  reply	other threads:[~2020-01-09 21:55 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-09 21:54 [PATCH-next 0/3] serial/sysrq: Add MAGIC_SYSRQ_SERIAL_SEQUENCE Dmitry Safonov
2020-01-09 21:54 ` Dmitry Safonov [this message]
2020-01-10 16:50   ` [PATCH-next 1/3] serial_core: Move sysrq functions from header file Greg Kroah-Hartman
2020-01-09 21:54 ` [PATCH-next 2/3] sysctl/sysrq: Remove __sysrq_enabled copy Dmitry Safonov
2020-01-10  3:19   ` Iurii Zaikin
2020-01-10 21:48     ` Dmitry Safonov
2020-01-10 16:40   ` Greg Kroah-Hartman
2020-01-10 21:45     ` Dmitry Safonov
2020-01-10 22:01       ` Greg Kroah-Hartman
2020-01-09 21:54 ` [PATCH-next 3/3] serial/sysrq: Add MAGIC_SYSRQ_SERIAL_SEQUENCE Dmitry Safonov
2020-01-09 23:53   ` Randy Dunlap
2020-01-10 22:02     ` Dmitry Safonov
2020-01-10 16:46   ` Greg Kroah-Hartman
2020-01-10 22:32     ` Dmitry Safonov
2020-01-14 19:10       ` Dmitry Safonov
2020-01-15 12:42         ` Greg Kroah-Hartman
2020-01-10 16:50   ` Joe Perches
2020-01-10 22:10     ` Dmitry Safonov
2020-01-11 14:08       ` Joe Perches
2020-01-10 19:01   ` kbuild test robot
2020-01-10 19:20   ` kbuild test robot
2020-01-11 10:52   ` kbuild test robot

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