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Date: Thu, 2 Jan 2014 13:07:24 +0100 From: Arnd Bergmann <arnd@...db.de> To: linux-kernel@...r.kernel.org Cc: Arnd Bergmann <arnd@...db.de>, akpm@...l.org, chas@....nrl.navy.mil, davem@...emloft.net, geert@...ux-m68k.org, gregkh@...uxfoundation.org, hverkuil@...all.nl, mingo@...nel.org, JBottomley@...allels.com, perex@...ex.cz, axboe@...nel.dk, jslaby@...e.cz, isdn@...ux-pingi.de, m.chehab@...sung.com, peterz@...radead.org, robinmholt@...il.com, tiwai@...e.de, alsa-devel@...a-project.org, devel@...verdev.osuosl.org, linux-atm-general@...ts.sourceforge.net, linux-cris-kernel@...s.com, linux-media@...r.kernel.org, linux-scsi@...r.kernel.org, linux-usb@...r.kernel.org, netdev@...r.kernel.org Subject: [PATCH, RFC 00/30] sleep_on removal The functions sleep_on, sleep_on_timeout, interruptible_sleep_on and interruptible_sleep_on_timeout have been deprecated for as long as I can remember, and a number of people have contributed patches in the past to remove them from various drivers. This has recently popped up again and I decided to spend some of my time on tracking down the last users and kill it for good. The work is somewhat related to the BKL removal I did a couple of years ago, since most of these drivers were using the BKL in a way that actually made the sleep_on function safe to call. As the BKL was converted into mutexes, the semantics changed slightly and typically opened up a race between checking a condition and going to sleep. I don't have any of the hardware that I'm sending the patches for, so it would be great if someone could test them before they get applied. Otherwise please review very carefully. I'm definitely happy for any patches to go into maintainer trees right away. Obviously the final patch cannot go in until everything else gets merged first and I suspect there will be a series of patches for maintainerless drivers that will go along with it. Arnd Arnd Bergmann (30): ataflop: fix sleep_on races scsi: atari_scsi: fix sleep_on race DAC960: remove sleep_on usage swim3: fix interruptible_sleep_on race [media] omap_vout: avoid sleep_on race [media] usbvision: remove bogus sleep_on_timeout [media] radio-cadet: avoid interruptible_sleep_on race [media] arv: fix sleep_on race staging: serqt_usb2: don't use sleep_on staging: gdm72xx: fix interruptible_sleep_on race staging: panel: fix interruptible_sleep_on race parport: fix interruptible_sleep_on race cris: sync_serial: remove interruptible_sleep_on tty/amiserial: avoid interruptible_sleep_on usbserial: stop using interruptible_sleep_on tty: synclink: avoid sleep_on race atm: nicstar: remove interruptible_sleep_on_timeout atm: firestream: fix interruptible_sleep_on race isdn: pcbit: fix interruptible_sleep_on race isdn: hisax/elsa: fix sleep_on race in elsa FSM isdn: divert, hysdn: fix interruptible_sleep_on race isdn: fix multiple sleep_on races oss: msnd_pinnacle: avoid interruptible_sleep_on_timeout oss: midibuf: fix sleep_on races oss: vwsnd: avoid interruptible_sleep_on oss: dmasound: kill SLEEP() macro to avoid race oss: remove last sleep_on users sgi-xp: open-code interruptible_sleep_on_timeout char: nwbutton: open-code interruptible_sleep_on sched: remove sleep_on() and friends Documentation/DocBook/kernel-hacking.tmpl | 10 ------ arch/cris/arch-v10/drivers/sync_serial.c | 4 ++- arch/cris/arch-v32/drivers/sync_serial.c | 4 ++- drivers/atm/firestream.c | 4 +-- drivers/atm/nicstar.c | 13 ++++---- drivers/block/DAC960.c | 34 +++++++++---------- drivers/block/ataflop.c | 16 ++++----- drivers/block/swim3.c | 18 ++++++---- drivers/char/nwbutton.c | 5 ++- drivers/char/pcmcia/synclink_cs.c | 4 +-- drivers/isdn/divert/divert_procfs.c | 7 ++-- drivers/isdn/hisax/elsa.c | 9 +++-- drivers/isdn/hisax/elsa_ser.c | 3 +- drivers/isdn/hysdn/hysdn_proclog.c | 7 ++-- drivers/isdn/i4l/isdn_common.c | 13 +++++--- drivers/isdn/pcbit/drv.c | 6 ++-- drivers/media/platform/arv.c | 4 +-- drivers/media/platform/omap/omap_vout_vrfb.c | 3 +- drivers/media/radio/radio-cadet.c | 12 +++++-- drivers/media/usb/usbvision/usbvision.h | 4 +-- drivers/misc/sgi-xp/xpc_channel.c | 5 ++- drivers/parport/share.c | 3 +- drivers/scsi/atari_scsi.c | 12 +++++-- drivers/staging/gdm72xx/gdm_usb.c | 5 +-- drivers/staging/panel/panel.c | 4 +-- drivers/staging/serqt_usb2/serqt_usb2.c | 17 ++++------ drivers/tty/amiserial.c | 26 ++++++++++----- drivers/tty/synclink.c | 4 +-- drivers/tty/synclink_gt.c | 4 +-- drivers/tty/synclinkmp.c | 4 +-- drivers/usb/serial/ch341.c | 29 +++++++++++----- drivers/usb/serial/cypress_m8.c | 49 ++++++++++++++++++---------- drivers/usb/serial/f81232.c | 29 +++++++++++----- drivers/usb/serial/pl2303.c | 29 +++++++++++----- include/linux/wait.h | 11 ------- kernel/sched/core.c | 46 -------------------------- sound/oss/dmabuf.c | 14 ++++---- sound/oss/dmasound/dmasound.h | 1 - sound/oss/dmasound/dmasound_core.c | 28 +++++++++++----- sound/oss/midibuf.c | 18 +++++----- sound/oss/msnd_pinnacle.c | 31 ++++++++++-------- sound/oss/sequencer.c | 16 ++++----- sound/oss/sleep.h | 18 ++++++++++ sound/oss/swarm_cs4297a.c | 14 ++++---- sound/oss/vwsnd.c | 14 +++++--- 45 files changed, 334 insertions(+), 277 deletions(-) create mode 100644 sound/oss/sleep.h -- 1.8.3.2 Cc: akpm@...l.org Cc: chas@....nrl.navy.mil Cc: davem@...emloft.net Cc: geert@...ux-m68k.org Cc: gregkh@...uxfoundation.org Cc: hverkuil@...all.nl Cc: mingo@...nel.org Cc: JBottomley@...allels.com Cc: perex@...ex.cz Cc: axboe@...nel.dk Cc: jslaby@...e.cz Cc: isdn@...ux-pingi.de Cc: m.chehab@...sung.com Cc: peterz@...radead.org Cc: robinmholt@...il.com Cc: tiwai@...e.de Cc: alsa-devel@...a-project.org Cc: devel@...verdev.osuosl.org Cc: linux-atm-general@...ts.sourceforge.net Cc: linux-cris-kernel@...s.com Cc: linux-media@...r.kernel.org Cc: linux-scsi@...r.kernel.org Cc: linux-usb@...r.kernel.org Cc: netdev@...r.kernel.org -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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