1. 16 Jan, 2013 2 commits
    • Jiri Slaby's avatar
      TTY: switch tty_flip_buffer_push · 2e124b4a
      Jiri Slaby authored
      Now, we start converting tty buffer functions to actually use
      tty_port. This will allow us to get rid of the need of tty in many
      call sites. Only tty_port will needed and hence no more
      tty_port_tty_get in those paths.
      
      Now, the one where most of tty_port_tty_get gets removed:
      tty_flip_buffer_push.
      
      IOW we also closed all the races in drivers not using tty_port_tty_get
      at all yet.
      
      Also we move tty_flip_buffer_push declaration from include/linux/tty.h
      to include/linux/tty_flip.h to all others while we are changing it
      anyway.
      Signed-off-by: 's avatarJiri Slaby <jslaby@suse.cz>
      Signed-off-by: 's avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      2e124b4a
    • Jiri Slaby's avatar
      TTY: switch tty_insert_flip_string · 05c7cd39
      Jiri Slaby authored
      Now, we start converting tty buffer functions to actually use
      tty_port. This will allow us to get rid of the need of tty in many
      call sites. Only tty_port will needed and hence no more
      tty_port_tty_get in those paths.
      
      tty_insert_flip_string this time.
      Signed-off-by: 's avatarJiri Slaby <jslaby@suse.cz>
      Signed-off-by: 's avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      05c7cd39
  2. 18 Sep, 2012 1 commit
  3. 14 Sep, 2012 1 commit
  4. 08 May, 2012 1 commit
    • Greg Kroah-Hartman's avatar
      USB: serial: rework usb_serial_register/deregister_drivers() · 68e24113
      Greg Kroah-Hartman authored
      This reworks the usb_serial_register_drivers() and
      usb_serial_deregister_drivers() to not need a pointer to a struct
      usb_driver anymore.  The usb_driver structure is now created dynamically
      and registered and unregistered as needed.
      
      This saves lines of code in each usb-serial driver.  All in-kernel users
      of these functions were also fixed up at this time.  The pl2303 driver
      was tested that everything worked properly.
      
      Thanks for the idea to do this from Alan Stern.
      
      Cc: Adhir Ramjiawan <adhirramjiawan0@gmail.com>
      Cc: Alan Stern <stern@rowland.harvard.edu>
      Cc: Al Borchers <alborchers@steinerpoint.com>
      Cc: Aleksey Babahin <tamerlan311@gmail.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andrew Worsley <amworsley@gmail.com>
      Cc: Bart Hartgers <bart.hartgers@gmail.com>
      Cc: Bill Pemberton <wfp5p@virginia.edu>
      Cc: Dan Carpenter <error27@gmail.com>
      Cc: Dan Williams <dcbw@redhat.com>
      Cc: Donald Lee <donald@asix.com.tw>
      Cc: Eric Dumazet <eric.dumazet@gmail.com>
      Cc: "Eric W. Biederman" <ebiederm@xmission.com>
      Cc: Felipe Balbi <balbi@ti.com>
      Cc: Gary Brubaker <xavyer@ix.netcom.com>
      Cc: Jesper Juhl <jj@chaosbits.net>
      Cc: Jiri Kosina <jkosina@suse.cz>
      Cc: Johan Hovold <jhovold@gmail.com>
      Cc: Julia Lawall <julia@diku.dk>
      Cc: Kautuk Consul <consul.kautuk@gmail.com>
      Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
      Cc: Lonnie Mendez <dignome@gmail.com>
      Cc: Matthias Bruestle and Harald Welte <support@reiner-sct.com>
      Cc: Matthias Urlichs <smurf@smurf.noris.de>
      Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
      Cc: Michal Sroczynski <msroczyn@gmail.com>
      Cc: "Michał Wróbel" <michal.wrobel@flytronic.pl>
      Cc: Oliver Neukum <oliver@neukum.name>
      Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
      Cc: Peter Berger <pberger@brimson.com>
      Cc: Preston Fick <preston.fick@silabs.com>
      Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
      Cc: Rigbert Hamisch <rigbert@gmx.de>
      Cc: Rusty Russell <rusty@rustcorp.com.au>
      Cc: Simon Arlott <simon@fire.lp0.eu>
      Cc: Support Department <support@connecttech.com>
      Cc: Thomas Tuttle <ttuttle@chromium.org>
      Cc: Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de>
      Cc: Wang YanQing <Udknight@gmail.com>
      Cc: William Greathouse <wgreathouse@smva.com>
      Signed-off-by: 's avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      68e24113
  5. 07 May, 2012 2 commits
    • Greg Kroah-Hartman's avatar
      USB: serial: remove usb_serial_disconnect call in all drivers · 32078f91
      Greg Kroah-Hartman authored
      This is now set by the usb-serial core, no need for the driver to
      individually set it.
      
      Thanks to Alan Stern for the idea to get rid of it.
      
      Cc: William Greathouse <wgreathouse@smva.com>
      Cc: Matthias Bruestle and Harald Welte <support@reiner-sct.com>
      Cc: Lonnie Mendez <dignome@gmail.com>
      Cc: Peter Berger <pberger@brimson.com>
      Cc: Al Borchers <alborchers@steinerpoint.com>
      Cc: Gary Brubaker <xavyer@ix.netcom.com>
      Cc: Oliver Neukum <oliver@neukum.name>
      Cc: Matthias Urlichs <smurf@smurf.noris.de>
      Cc: Support Department <support@connecttech.com>
      Cc: Rusty Russell <rusty@rustcorp.com.au>
      Cc: Alan Stern <stern@rowland.harvard.edu>
      Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
      Cc: Kautuk Consul <consul.kautuk@gmail.com>
      Cc: Bill Pemberton <wfp5p@virginia.edu>
      Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
      Cc: Bart Hartgers <bart.hartgers@gmail.com>
      Cc: Johan Hovold <jhovold@gmail.com>
      Cc: Preston Fick <preston.fick@silabs.com>
      Cc: Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de>
      Cc: Simon Arlott <simon@fire.lp0.eu>
      Cc: Andrew Worsley <amworsley@gmail.com>
      Cc: "Michał Wróbel" <michal.wrobel@flytronic.pl>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Eric Dumazet <eric.dumazet@gmail.com>
      Cc: "Eric W. Biederman" <ebiederm@xmission.com>
      Cc: Felipe Balbi <balbi@ti.com>
      Cc: Aleksey Babahin <tamerlan311@gmail.com>
      Cc: Dan Carpenter <error27@gmail.com>
      Cc: Jiri Kosina <jkosina@suse.cz>
      Cc: Donald Lee <donald@asix.com.tw>
      Cc: Julia Lawall <julia@diku.dk>
      Cc: Michal Sroczynski <msroczyn@gmail.com>
      Cc: Wang YanQing <Udknight@gmail.com>
      Cc: Dan Williams <dcbw@redhat.com>
      Cc: Thomas Tuttle <ttuttle@chromium.org>
      Cc: Rigbert Hamisch <rigbert@gmx.de>
      Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
      Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
      Cc: Jesper Juhl <jj@chaosbits.net>
      Cc: Adhir Ramjiawan <adhirramjiawan0@gmail.com>
      Signed-off-by: 's avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      32078f91
    • Greg Kroah-Hartman's avatar
      USB: serial: remove usb_serial_probe call in all drivers · 5026bb07
      Greg Kroah-Hartman authored
      This is now set by the usb-serial core, no need for the driver to
      individually set it.
      
      Thanks to Alan Stern for the idea to get rid of it.
      
      Cc: William Greathouse <wgreathouse@smva.com>
      Cc: Matthias Bruestle and Harald Welte <support@reiner-sct.com>
      Cc: Lonnie Mendez <dignome@gmail.com>
      Cc: Peter Berger <pberger@brimson.com>
      Cc: Al Borchers <alborchers@steinerpoint.com>
      Cc: Gary Brubaker <xavyer@ix.netcom.com>
      Cc: Oliver Neukum <oliver@neukum.name>
      Cc: Matthias Urlichs <smurf@smurf.noris.de>
      Cc: Support Department <support@connecttech.com>
      Cc: Rusty Russell <rusty@rustcorp.com.au>
      Cc: Alan Stern <stern@rowland.harvard.edu>
      Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
      Cc: Kautuk Consul <consul.kautuk@gmail.com>
      Cc: Bill Pemberton <wfp5p@virginia.edu>
      Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
      Cc: Bart Hartgers <bart.hartgers@gmail.com>
      Cc: Johan Hovold <jhovold@gmail.com>
      Cc: Preston Fick <preston.fick@silabs.com>
      Cc: Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de>
      Cc: Simon Arlott <simon@fire.lp0.eu>
      Cc: Andrew Worsley <amworsley@gmail.com>
      Cc: "Michał Wróbel" <michal.wrobel@flytronic.pl>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Eric Dumazet <eric.dumazet@gmail.com>
      Cc: "Eric W. Biederman" <ebiederm@xmission.com>
      Cc: Felipe Balbi <balbi@ti.com>
      Cc: Aleksey Babahin <tamerlan311@gmail.com>
      Cc: Dan Carpenter <error27@gmail.com>
      Cc: Jiri Kosina <jkosina@suse.cz>
      Cc: Donald Lee <donald@asix.com.tw>
      Cc: Julia Lawall <julia@diku.dk>
      Cc: Michal Sroczynski <msroczyn@gmail.com>
      Cc: Wang YanQing <Udknight@gmail.com>
      Cc: Dan Williams <dcbw@redhat.com>
      Cc: Thomas Tuttle <ttuttle@chromium.org>
      Cc: Rigbert Hamisch <rigbert@gmx.de>
      Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
      Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
      Cc: Jesper Juhl <jj@chaosbits.net>
      Cc: Adhir Ramjiawan <adhirramjiawan0@gmail.com>
      Signed-off-by: 's avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      5026bb07
  6. 24 Feb, 2012 1 commit
  7. 12 Jan, 2012 1 commit
  8. 20 May, 2010 3 commits
  9. 30 Mar, 2010 1 commit
    • Tejun Heo's avatar
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo authored
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
      
      percpu.h is included by sched.h and module.h and thus ends up being
      included when building most .c files.  percpu.h includes slab.h which
      in turn includes gfp.h making everything defined by the two files
      universally available and complicating inclusion dependencies.
      
      percpu.h -> slab.h dependency is about to be removed.  Prepare for
      this change by updating users of gfp and slab facilities include those
      headers directly instead of assuming availability.  As this conversion
      needs to touch large number of source files, the following script is
      used as the basis of conversion.
      
        http://userweb.kernel.org/~tj/misc/slabh-sweep.py
      
      The script does the followings.
      
      * Scan files for gfp and slab usages and update includes such that
        only the necessary includes are there.  ie. if only gfp is used,
        gfp.h, if slab is used, slab.h.
      
      * When the script inserts a new include, it looks at the include
        blocks and try to put the new include such that its order conforms
        to its surrounding.  It's put in the include block which contains
        core kernel includes, in the same order that the rest are ordered -
        alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
        doesn't seem to be any matching order.
      
      * If the script can't find a place to put a new include (mostly
        because the file doesn't have fitting include block), it prints out
        an error message indicating which .h file needs to be added to the
        file.
      
      The conversion was done in the following steps.
      
      1. The initial automatic conversion of all .c files updated slightly
         over 4000 files, deleting around 700 includes and adding ~480 gfp.h
         and ~3000 slab.h inclusions.  The script emitted errors for ~400
         files.
      
      2. Each error was manually checked.  Some didn't need the inclusion,
         some needed manual addition while adding it to implementation .h or
         embedding .c file was more appropriate for others.  This step added
         inclusions to around 150 files.
      
      3. The script was run again and the output was compared to the edits
         from #2 to make sure no file was left behind.
      
      4. Several build tests were done and a couple of problems were fixed.
         e.g. lib/decompress_*.c used malloc/free() wrappers around slab
         APIs requiring slab.h to be added manually.
      
      5. The script was run on all .h files but without automatically
         editing them as sprinkling gfp.h and slab.h inclusions around .h
         files could easily lead to inclusion dependency hell.  Most gfp.h
         inclusion directives were ignored as stuff from gfp.h was usually
         wildly available and often used in preprocessor macros.  Each
         slab.h inclusion directive was examined and added manually as
         necessary.
      
      6. percpu.h was updated not to include slab.h.
      
      7. Build test were done on the following configurations and failures
         were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
         distributed build env didn't work with gcov compiles) and a few
         more options had to be turned off depending on archs to make things
         build (like ipr on powerpc/64 which failed due to missing writeq).
      
         * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
         * powerpc and powerpc64 SMP allmodconfig
         * sparc and sparc64 SMP allmodconfig
         * ia64 SMP allmodconfig
         * s390 SMP allmodconfig
         * alpha SMP allmodconfig
         * um on x86_64 SMP allmodconfig
      
      8. percpu.h modifications were reverted so that it could be applied as
         a separate patch and serve as bisection point.
      
      Given the fact that I had only a couple of failures from tests on step
      6, I'm fairly confident about the coverage of this conversion patch.
      If there is a breakage, it's likely to be something in one of the arch
      headers which should be easily discoverable easily on most builds of
      the specific arch.
      Signed-off-by: 's avatarTejun Heo <tj@kernel.org>
      Guess-its-ok-by: 's avatarChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  10. 17 Oct, 2008 2 commits
  11. 13 Oct, 2008 1 commit
    • Alan Cox's avatar
      tty: usb-serial krefs · 4a90f09b
      Alan Cox authored
      Use kref in the USB serial drivers so that we don't free tty structures
      from under the URB receive handlers as has historically been the case if
      you were unlucky. This also gives us a framework for general tty drivers to
      use tty_port objects and refcount.
      
      Contains two err->dev_err changes merged together to fix clashes in the
      -next tree.
      Signed-off-by: 's avatarAlan Cox <alan@redhat.com>
      Signed-off-by: 's avatarLinus Torvalds <torvalds@linux-foundation.org>
      4a90f09b
  12. 22 Jul, 2008 2 commits
  13. 25 Apr, 2008 4 commits
  14. 12 Oct, 2007 1 commit
  15. 22 Aug, 2007 1 commit
  16. 12 Jul, 2007 1 commit
  17. 07 Feb, 2007 1 commit
  18. 05 Oct, 2006 1 commit
    • David Howells's avatar
      IRQ: Maintain regs pointer globally rather than passing to IRQ handlers · 7d12e780
      David Howells authored
      Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
      of passing regs around manually through all ~1800 interrupt handlers in the
      Linux kernel.
      
      The regs pointer is used in few places, but it potentially costs both stack
      space and code to pass it around.  On the FRV arch, removing the regs parameter
      from all the genirq function results in a 20% speed up of the IRQ exit path
      (ie: from leaving timer_interrupt() to leaving do_IRQ()).
      
      Where appropriate, an arch may override the generic storage facility and do
      something different with the variable.  On FRV, for instance, the address is
      maintained in GR28 at all times inside the kernel as part of general exception
      handling.
      
      Having looked over the code, it appears that the parameter may be handed down
      through up to twenty or so layers of functions.  Consider a USB character
      device attached to a USB hub, attached to a USB controller that posts its
      interrupts through a cascaded auxiliary interrupt controller.  A character
      device driver may want to pass regs to the sysrq handler through the input
      layer which adds another few layers of parameter passing.
      
      I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
      main part of the code on FRV and i386, though I can't test most of the drivers.
      I've also done partial conversion for powerpc and MIPS - these at least compile
      with minimal configurations.
      
      This will affect all archs.  Mostly the changes should be relatively easy.
      Take do_IRQ(), store the regs pointer at the beginning, saving the old one:
      
      	struct pt_regs *old_regs = set_irq_regs(regs);
      
      And put the old one back at the end:
      
      	set_irq_regs(old_regs);
      
      Don't pass regs through to generic_handle_irq() or __do_IRQ().
      
      In timer_interrupt(), this sort of change will be necessary:
      
      	-	update_process_times(user_mode(regs));
      	-	profile_tick(CPU_PROFILING, regs);
      	+	update_process_times(user_mode(get_irq_regs()));
      	+	profile_tick(CPU_PROFILING);
      
      I'd like to move update_process_times()'s use of get_irq_regs() into itself,
      except that i386, alone of the archs, uses something other than user_mode().
      
      Some notes on the interrupt handling in the drivers:
      
       (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
           the input_dev struct.
      
       (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
           something different depending on whether it's been supplied with a regs
           pointer or not.
      
       (*) Various IRQ handler function pointers have been moved to type
           irq_handler_t.
      Signed-Off-By: 's avatarDavid Howells <dhowells@redhat.com>
      (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
      7d12e780
  19. 28 Sep, 2006 1 commit
  20. 12 Jul, 2006 1 commit
  21. 30 Jun, 2006 1 commit
  22. 04 Jan, 2006 4 commits
  23. 28 Oct, 2005 4 commits
  24. 27 Jun, 2005 1 commit
  25. 16 Apr, 2005 1 commit
    • Linus Torvalds's avatar
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds authored
      Initial git repository build. I'm not bothering with the full history,
      even though we have it. We can create a separate "historical" git
      archive of that later if we want to, and in the meantime it's about
      3.2GB when imported into git - space that would just make the early
      git days unnecessarily complicated, when we don't have a lot of good
      infrastructure for it.
      
      Let it rip!
      1da177e4