[PATCH 0/3] minitty: a minimal TTY layer alternative for embedded systems
Nicolas Pitre
nicolas.pitre at linaro.org
Fri Mar 24 05:18:39 PDT 2017
On Fri, 24 Mar 2017, Baruch Siach wrote:
> Hi Nicolas,
>
> On Thu, Mar 23, 2017 at 05:03:01PM -0400, Nicolas Pitre wrote:
> > Here's some numbers using a minimal ARM config.
> >
> > When CONFIG_TTY=y, the following files are linked into the kernel:
> >
> > text data bss dec hex filename
> > 8796 128 0 8924 22dc drivers/tty/n_tty.o
> > 12846 276 44 13166 336e drivers/tty/serial/serial_core.o
> > 4852 489 49 5390 150e drivers/tty/sysrq.o
> > 1376 0 0 1376 560 drivers/tty/tty_buffer.o
> > 13571 172 132 13875 3633 drivers/tty/tty_io.o
> > 3072 0 0 3072 c00 drivers/tty/tty_ioctl.o
> > 2457 2 120 2579 a13 drivers/tty/tty_ldisc.o
> > 1328 0 0 1328 530 drivers/tty/tty_ldsem.o
> > 316 0 0 316 13c drivers/tty/tty_mutex.o
> > 2516 0 0 2516 9d4 drivers/tty/tty_port.o
> > 51130 1067 345 52542 cd3e (TOTALS)
> >
> > With CONFIG_TTY=n and CONFIG_MINITTY_SERIAL=y, the above is replaced by:
> >
> > text data bss dec hex filename
> > 8776 8 108 8892 22bc drivers/tty/serial/minitty_serial.o
>
> tty_baudrate.o is missing here. It is included in serial_core.o when
> CONFIG_TTY=y.
It is also included when CONFIG_MINITTY_SERIAL=y, so for comparison
purpose I didn't list common files here.
Nicolas
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