Commit 85bce38a authored by Christophe JAILLET's avatar Christophe JAILLET Committed by Greg Kroah-Hartman
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serial: 8250: Reorder fields in 'struct plat_serial8250_port' 



Group some variables based on their sizes to reduce hole and avoid padding.
On x86_64, this shrinks the size of 'struct plat_serial8250_port'
from 144 to 128 bytes.

It saves a few bytes of memory.

Signed-off-by: default avatarChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/f3cb1efe1454e0615840fd331ee335bc441589a9.1676665358.git.christophe.jaillet@wanadoo.fr


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent c47527cb

include/linux/serial_8250.h

+2 −2
Original line number Diff line number Diff line
@@ -18,16 +18,16 @@ struct plat_serial8250_port { 
	unsigned long	iobase;		/* io base address */

	void __iomem	*membase;	/* ioremap cookie or NULL */

	resource_size_t	mapbase;	/* resource base */

	unsigned int	uartclk;	/* UART clock rate */

	unsigned int	irq;		/* interrupt number */

	unsigned long	irqflags;	/* request_irq flags */

	unsigned int	uartclk;	/* UART clock rate */

	void            *private_data;

	unsigned char	regshift;	/* register shift */

	unsigned char	iotype;		/* UPIO_* */

	unsigned char	hub6;

	unsigned char	has_sysrq;	/* supports magic SysRq */

	upf_t		flags;		/* UPF_* flags */

	unsigned int	type;		/* If UPF_FIXED_TYPE */

	upf_t		flags;		/* UPF_* flags */

	unsigned int	(*serial_in)(struct uart_port *, int);

	void		(*serial_out)(struct uart_port *, int, int);

	void		(*set_termios)(struct uart_port *,