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Subject[PATCH 00/68] TTY buffer in tty_port -- prep no. 1
Date
Hi,

this is the first series of patches which allow tty buffers to be
moved from tty_struct (present from open to close/hangup) to tty_port
(present as long as the device). This will allow us to get rid of the
tty refcounting in the interrupt service routines and other hot paths
after we are done. This is because we won't need to handle races among
ISRs, timers, hangups and others, because tty_port lives as long as an
interrupt/timer tick may occur. Unlike tty_struct.

In this series, only first few drivers are converted to use
tty_port. The rest is to come later.

The first few patches are simple fixes/cleanups which emerged during
the code investigation here and there. Further serialP header removal
happens there. Finally, some drivers are forced to use tty_port, which
will become a necessity in the future.

Simserial (ia64) and standard x86 stuff were runtime-tested. The rest
is only checked to be compilation-errors free.

Final remark: simserial stuff depends on 4 patches sent to Tony Luck
last week. They are in hist tree and -next already.

Jiri Slaby (68):
USB: cdc-acm, use tty_standard_install
TTY: tty_io, remove buffer re-assignments
TTY: let alloc_tty_driver deduce the owner automatically
TTY: remove minor_num from tty_driver
TTY: remove re-assignments to tty_driver members
TTY: simplify tty_driver_lookup_tty a bit
TTY: remove tty driver re-set from tty_reopen
TTY: serial, simplify ASYNC_USR_MASK
TTY: tty_driver, document tty->ops->shutdown limitation
ALPHA: srmcons, use timer functions
ALPHA: srmcons, fix racy singleton structure
TTY: srmcons, convert to use tty_port
TTY: serialP, remove DECLARE_WAITQUEUE check
TTY: remove unneeded tty->index checks
TTY: ipwireless, fix tty->index handling
NET: pc300, do not zero global variables
NET: pc300, show version info from module init
XTENSA: iss/console, use setup_timer
XTENSA: iss/console, fix potential deadlock
TTY: iss/console, use tty_port
TTY: serial, use atomic_inc_return in ioc4_serial
TTY: serial, include pci.h in m32r_sio
TTY: remove serialP.h inclusion from some files
TTY: speakup, do not use serialP
TTY: serialP, remove unused material
TTY: amiserial, remove tasklet for tty_wakeup
TTY: amiserial, use only one copy of async flags
TTY: simserial, use only one copy of async flags
TTY: simserial/amiserial, use one instance of other members
TTY: simserial, remove support of shared interrupts
TTY: simserial, remove IRQ_T
TTY: amiserial, remove IRQ_ports
TTY: serialP, merge serial_state and async_struct
TTY: amiserial, simplify set_serial_info
TTY: amiserial, pass tty down to functions
TTY: simserial, pass tty down to functions
TTY: amiserial/simserial, use tty_port
TTY: amiserial/simserial, use close delays from tty_port
TTY: amiserial/simserial, use count from tty_port
TTY: amiserial/simserial, use flags from tty_port
TTY: simserial, remove static initialization
TTY: simserial, remove tmp_buf
TTY: simserial, stop using serial_state->{line,icount}
TTY: simserial no longer needs serialP
TTY: simserial, define local tty_port pointer
TTY: simserial, remove some tty ops
TTY: simserial, use tty_port_close_end
TTY: simserial, use tty_port_close_start
TTY: simserial, properly refcount tty_port->tty
TTY: simserial, use tty_port_open
TTY: simserial, use tty_port_hangup
TTY: simserial, remove useless comments
TTY: simserial, fix includes
TTY: simserial, reindent some code
TTY: simserial, final cleanup
TTY: amiserial, define local tty_port pointer
TTY: amiserial, stop using serial_state->{irq,type,line}
TTY: amiserial no longer needs serialP
TTY: amiserial, provide carrier helpers
TTY: amiserial, use tty_port_block_til_ready
TTY: amiserial, use tty_port_close_end
TTY: amiserial, use tty_port_close_start
TTY: pdc_cons, fix racy tty test
TTY: pdc_cons, fix open vs timer race
TTY: pdc_cons, fix open vs pdc_console_tty_driver race
TTY: pdc_cons, use tty_port
TTY: isdn/gigaset, do not set tty->driver_data to NULL
TTY: isdn/gigaset, use tty_port
arch/alpha/kernel/srmcons.c | 78 ++--
arch/ia64/hp/sim/simserial.c | 687 +++++++-------------------------
arch/m68k/emu/nfcon.c | 1 -
arch/parisc/kernel/pdc_cons.c | 59 ++-
arch/xtensa/platforms/iss/console.c | 22 +-
drivers/char/pcmcia/synclink_cs.c | 3 +-
drivers/char/ttyprintk.c | 2 -
drivers/isdn/capi/capi.c | 4 +-
drivers/isdn/gigaset/common.c | 5 +-
drivers/isdn/gigaset/gigaset.h | 3 +-
drivers/isdn/gigaset/interface.c | 158 ++------
drivers/isdn/i4l/isdn_tty.c | 7 +-
drivers/misc/pti.c | 6 +-
drivers/mmc/card/sdio_uart.c | 1 -
drivers/net/usb/hso.c | 2 -
drivers/net/wan/pc300_drv.c | 13 +-
drivers/net/wan/pc300_tty.c | 18 -
drivers/s390/char/con3215.c | 9 +-
drivers/s390/char/sclp_tty.c | 1 -
drivers/s390/char/sclp_vt220.c | 1 -
drivers/s390/char/tty3270.c | 1 -
drivers/staging/speakup/serialio.c | 11 +-
drivers/staging/speakup/serialio.h | 13 +-
drivers/staging/speakup/spk_priv.h | 2 +-
drivers/staging/speakup/synth.c | 2 +-
drivers/tty/amiserial.c | 730 +++++++++++------------------------
drivers/tty/bfin_jtag_comm.c | 1 -
drivers/tty/cyclades.c | 7 +-
drivers/tty/ehv_bytechan.c | 1 -
drivers/tty/hvc/hvc_console.c | 1 -
drivers/tty/hvc/hvcs.c | 26 +-
drivers/tty/hvc/hvsi.c | 6 +-
drivers/tty/ipwireless/tty.c | 37 +-
drivers/tty/isicom.c | 3 -
drivers/tty/moxa.c | 1 -
drivers/tty/mxser.c | 5 -
drivers/tty/n_gsm.c | 1 -
drivers/tty/nozomi.c | 1 -
drivers/tty/pty.c | 4 -
drivers/tty/rocket.c | 7 +-
drivers/tty/serial/68328serial.c | 9 +-
drivers/tty/serial/crisv10.c | 15 +-
drivers/tty/serial/ifx6x60.c | 3 -
drivers/tty/serial/ioc4_serial.c | 3 +-
drivers/tty/serial/m32r_sio.c | 1 -
drivers/tty/serial/m32r_sio.h | 1 +
drivers/tty/serial/msm_smd_tty.c | 1 -
drivers/tty/serial/serial_core.c | 1 -
drivers/tty/synclink.c | 3 +-
drivers/tty/synclink_gt.c | 3 +-
drivers/tty/synclinkmp.c | 3 +-
drivers/tty/tty_io.c | 12 +-
drivers/tty/vt/vt.c | 2 +-
drivers/usb/class/cdc-acm.c | 8 +-
drivers/usb/gadget/u_serial.c | 4 -
drivers/usb/serial/usb-serial.c | 1 -
include/linux/serial.h | 4 +-
include/linux/serialP.h | 142 -------
include/linux/tty_driver.h | 8 +-
net/bluetooth/rfcomm/tty.c | 1 -
net/irda/ircomm/ircomm_tty.c | 7 +-
61 files changed, 542 insertions(+), 1630 deletions(-)
delete mode 100644 include/linux/serialP.h
--
1.7.9.2




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