* [PATCH 00/18] Make the big kernel lock optional
@ 2010-09-14 19:34 Arnd Bergmann
2010-09-14 19:34 ` [PATCH 05/18] alpha: kill big kernel lock Arnd Bergmann
2010-09-15 9:37 ` [PATCH 00/18] Make the big kernel lock optional Stephen Rothwell
0 siblings, 2 replies; 6+ messages in thread
From: Arnd Bergmann @ 2010-09-14 19:34 UTC (permalink / raw)
To: arnd
Cc: linux-sh, Roman Zippel, linux-pci, Heiko Carstens, Bob Picco,
Jaroslav Kysela, Stephen Rothwell, Jesper Nilsson, Mark Gross,
Helge Deller, James E.J. Bottomley, Geert Uytterhoeven,
Matt Turner, linux-media, user-mode-linux-devel, linux-s390,
Clemens Ladisch, Jeff Dike, Mauro Carvalho Chehab, Mikael Starvik,
Tejun Heo, linux-m68k, Ivan Kokshaysky, Jesse Barnes, Thomas
This is a set of simple patches to remove the big kernel
lock in some remaining areas and introduce a Kconfig
option which I'd like to have included in linux-next
and get included in the 2.6.37 merge window.
I have a total of five topic branches, which together
remove the BKL from all code except those modules
which get marked as 'depends on BKL' in the final
patch of this series.
It's fine if maintainers want to add some of these
patches to their own queue, as long as they all make
it into linux-next.
Stephen, please add
git+ssh://master.kernel.org/pub/scm/linux/kernel/git/arnd/bkl.git config
Arnd Bergmann (17):
hpet: kill BKL, add compat_ioctl
proc/pci: kill BKL
s390/block: kill the big kernel lock
isapnp: BKL removal
alpha: kill big kernel lock
cris: autoconvert trivial BKL users
m68k: remove big kernel lock
parisc: remove big kernel lock
sh: kill big kernel lock
uml: kill big kernel lock
tlclk: remove big kernel lock
i4l: kill big kernel lock
misdn: kill big kernel lock
dvb/bt8xx: kill the big kernel lock
dvb-core: kill the big kernel lock
rtmutex-tester: make it build without BKL
BKL: introduce CONFIG_BKL.
Al Viro (1):
fix rawctl compat ioctls breakage on amd64 and itanic
arch/alpha/kernel/osf_sys.c | 5 -
arch/alpha/kernel/traps.c | 3 -
arch/cris/arch-v10/drivers/ds1302.c | 7 +-
arch/cris/arch-v10/drivers/pcf8563.c | 6 +-
arch/cris/arch-v10/drivers/sync_serial.c | 11 +-
arch/cris/arch-v32/drivers/cryptocop.c | 4 +-
arch/cris/arch-v32/drivers/mach-a3/gpio.c | 11 +-
arch/cris/arch-v32/drivers/mach-fs/gpio.c | 11 +-
arch/cris/arch-v32/drivers/pcf8563.c | 6 +-
arch/cris/arch-v32/drivers/sync_serial.c | 11 +-
arch/m68k/kernel/sys_m68k.c | 7 +-
arch/parisc/kernel/perf.c | 4 -
arch/sh/kernel/ptrace_64.c | 9 +-
arch/um/drivers/harddog_kern.c | 13 +-
arch/um/drivers/hostaudio_kern.c | 8 +-
arch/um/drivers/ubd_kern.c | 8 +-
arch/um/kernel/exec.c | 2 -
drivers/char/hpet.c | 98 +++++++----
drivers/char/raw.c | 243 +++++++++++++++-----------
drivers/char/tlclk.c | 6 +-
drivers/gpu/drm/Kconfig | 5 +-
drivers/isdn/capi/Kconfig | 2 +-
drivers/isdn/i4l/isdn_tty.c | 11 +-
drivers/isdn/mISDN/stack.c | 7 -
drivers/media/Kconfig | 1 +
drivers/media/dvb/bt8xx/dst_ca.c | 7 +-
drivers/media/dvb/dvb-core/dmxdev.c | 17 +--
drivers/media/dvb/dvb-core/dvb_ca_en50221.c | 8 +-
drivers/media/dvb/dvb-core/dvb_net.c | 9 +-
drivers/media/dvb/dvb-core/dvbdev.c | 17 +-
drivers/net/appletalk/Kconfig | 1 +
drivers/pci/proc.c | 4 +-
drivers/pnp/isapnp/proc.c | 13 +-
drivers/s390/block/dasd.c | 6 -
drivers/s390/block/dasd_ioctl.c | 17 +--
drivers/s390/block/dcssblk.c | 5 -
drivers/staging/cx25821/Kconfig | 1 +
drivers/staging/easycap/Kconfig | 1 +
drivers/staging/go7007/Kconfig | 1 +
drivers/staging/usbip/Kconfig | 2 +-
drivers/usb/gadget/Kconfig | 2 +-
fs/Kconfig | 1 +
fs/adfs/Kconfig | 1 +
fs/afs/Kconfig | 1 +
fs/autofs/Kconfig | 1 +
fs/autofs4/Kconfig | 1 +
fs/ceph/Kconfig | 1 +
fs/coda/Kconfig | 1 +
fs/compat_ioctl.c | 70 --------
fs/ecryptfs/Kconfig | 1 +
fs/freevxfs/Kconfig | 1 +
fs/hpfs/Kconfig | 1 +
fs/jffs2/Kconfig | 1 +
fs/ncpfs/Kconfig | 1 +
fs/nfs/Kconfig | 1 +
fs/nfsd/Kconfig | 1 +
fs/ocfs2/Kconfig | 1 +
fs/qnx4/Kconfig | 1 +
fs/reiserfs/Kconfig | 1 +
fs/smbfs/Kconfig | 1 +
fs/squashfs/Kconfig | 1 +
fs/udf/Kconfig | 1 +
fs/ufs/Kconfig | 1 +
include/linux/smp_lock.h | 7 +-
init/Kconfig | 2 +-
kernel/rtmutex-tester.c | 6 +
kernel/trace/Kconfig | 1 +
lib/Kconfig.debug | 9 +
net/ipx/Kconfig | 1 +
net/irda/Kconfig | 1 +
net/irda/irnet/Kconfig | 1 +
net/x25/Kconfig | 1 +
72 files changed, 355 insertions(+), 375 deletions(-)
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Bob Picco <bob.picco@hp.com>
Cc: Clemens Ladisch <clemens@ladisch.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Gross <mark.gross@intel.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-alpha@vger.kernel.org
Cc: linux-cris-kernel@axis.com
Cc: linux-m68k@lists.linux-m68k.org
Cc: linux-media@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Cc: linux-s390@vger.kernel.org
Cc: linux-sh@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: user-mode-linux-devel@lists.sourceforge.net
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^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 05/18] alpha: kill big kernel lock
2010-09-14 19:34 [PATCH 00/18] Make the big kernel lock optional Arnd Bergmann
@ 2010-09-14 19:34 ` Arnd Bergmann
2010-09-14 19:41 ` Matt Turner
2010-09-15 9:37 ` [PATCH 00/18] Make the big kernel lock optional Stephen Rothwell
1 sibling, 1 reply; 6+ messages in thread
From: Arnd Bergmann @ 2010-09-14 19:34 UTC (permalink / raw)
To: arnd; +Cc: Richard Henderson, Ivan Kokshaysky, Matt Turner, linux-alpha
All uses of the BKL on alpha are totally bogus, nothing
is really protected by this. Remove the remaining users
so we don't have to mark alpha as 'depends on BKL'.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: linux-alpha@vger.kernel.org
---
arch/alpha/kernel/osf_sys.c | 5 -----
arch/alpha/kernel/traps.c | 3 ---
2 files changed, 0 insertions(+), 8 deletions(-)
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 5d1e6d6..49225dd 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -15,7 +15,6 @@
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/stddef.h>
#include <linux/syscalls.h>
#include <linux/unistd.h>
@@ -69,7 +68,6 @@ SYSCALL_DEFINE4(osf_set_program_attributes, unsigned long, text_start,
{
struct mm_struct *mm;
- lock_kernel();
mm = current->mm;
mm->end_code = bss_start + bss_len;
mm->start_brk = bss_start + bss_len;
@@ -78,7 +76,6 @@ SYSCALL_DEFINE4(osf_set_program_attributes, unsigned long, text_start,
printk("set_program_attributes(%lx %lx %lx %lx)\n",
text_start, text_len, bss_start, bss_len);
#endif
- unlock_kernel();
return 0;
}
@@ -517,7 +514,6 @@ SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code,
long error;
int __user *min_buf_size_ptr;
- lock_kernel();
switch (code) {
case PL_SET:
if (get_user(error, &args->set.nbytes))
@@ -547,7 +543,6 @@ SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code,
error = -EOPNOTSUPP;
break;
};
- unlock_kernel();
return error;
}
diff --git a/arch/alpha/kernel/traps.c b/arch/alpha/kernel/traps.c
index b14f015..0414e02 100644
--- a/arch/alpha/kernel/traps.c
+++ b/arch/alpha/kernel/traps.c
@@ -13,7 +13,6 @@
#include <linux/sched.h>
#include <linux/tty.h>
#include <linux/delay.h>
-#include <linux/smp_lock.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kallsyms.h>
@@ -623,7 +622,6 @@ do_entUna(void * va, unsigned long opcode, unsigned long reg,
return;
}
- lock_kernel();
printk("Bad unaligned kernel access at %016lx: %p %lx %lu\n",
pc, va, opcode, reg);
do_exit(SIGSEGV);
@@ -646,7 +644,6 @@ got_exception:
* Yikes! No one to forward the exception to.
* Since the registers are in a weird format, dump them ourselves.
*/
- lock_kernel();
printk("%s(%d): unhandled unaligned exception\n",
current->comm, task_pid_nr(current));
--
1.7.1
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH 05/18] alpha: kill big kernel lock
2010-09-14 19:34 ` [PATCH 05/18] alpha: kill big kernel lock Arnd Bergmann
@ 2010-09-14 19:41 ` Matt Turner
2010-09-14 20:07 ` Arnd Bergmann
0 siblings, 1 reply; 6+ messages in thread
From: Matt Turner @ 2010-09-14 19:41 UTC (permalink / raw)
To: Arnd Bergmann; +Cc: Richard Henderson, Ivan Kokshaysky, linux-alpha
On Tue, Sep 14, 2010 at 3:34 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> All uses of the BKL on alpha are totally bogus, nothing
> is really protected by this. Remove the remaining users
> so we don't have to mark alpha as 'depends on BKL'.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> Cc: Richard Henderson <rth@twiddle.net>
> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
> Cc: Matt Turner <mattst88@gmail.com>
> Cc: linux-alpha@vger.kernel.org
> ---
> arch/alpha/kernel/osf_sys.c | 5 -----
> arch/alpha/kernel/traps.c | 3 ---
> 2 files changed, 0 insertions(+), 8 deletions(-)
>
> diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
> index 5d1e6d6..49225dd 100644
> --- a/arch/alpha/kernel/osf_sys.c
> +++ b/arch/alpha/kernel/osf_sys.c
> @@ -15,7 +15,6 @@
> #include <linux/kernel.h>
> #include <linux/mm.h>
> #include <linux/smp.h>
> -#include <linux/smp_lock.h>
> #include <linux/stddef.h>
> #include <linux/syscalls.h>
> #include <linux/unistd.h>
> @@ -69,7 +68,6 @@ SYSCALL_DEFINE4(osf_set_program_attributes, unsigned long, text_start,
> {
> struct mm_struct *mm;
>
> - lock_kernel();
> mm = current->mm;
> mm->end_code = bss_start + bss_len;
> mm->start_brk = bss_start + bss_len;
> @@ -78,7 +76,6 @@ SYSCALL_DEFINE4(osf_set_program_attributes, unsigned long, text_start,
> printk("set_program_attributes(%lx %lx %lx %lx)\n",
> text_start, text_len, bss_start, bss_len);
> #endif
> - unlock_kernel();
> return 0;
> }
>
> @@ -517,7 +514,6 @@ SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code,
> long error;
> int __user *min_buf_size_ptr;
>
> - lock_kernel();
> switch (code) {
> case PL_SET:
> if (get_user(error, &args->set.nbytes))
> @@ -547,7 +543,6 @@ SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code,
> error = -EOPNOTSUPP;
> break;
> };
> - unlock_kernel();
> return error;
> }
>
> diff --git a/arch/alpha/kernel/traps.c b/arch/alpha/kernel/traps.c
> index b14f015..0414e02 100644
> --- a/arch/alpha/kernel/traps.c
> +++ b/arch/alpha/kernel/traps.c
> @@ -13,7 +13,6 @@
> #include <linux/sched.h>
> #include <linux/tty.h>
> #include <linux/delay.h>
> -#include <linux/smp_lock.h>
> #include <linux/module.h>
> #include <linux/init.h>
> #include <linux/kallsyms.h>
> @@ -623,7 +622,6 @@ do_entUna(void * va, unsigned long opcode, unsigned long reg,
> return;
> }
>
> - lock_kernel();
> printk("Bad unaligned kernel access at %016lx: %p %lx %lu\n",
> pc, va, opcode, reg);
> do_exit(SIGSEGV);
> @@ -646,7 +644,6 @@ got_exception:
> * Yikes! No one to forward the exception to.
> * Since the registers are in a weird format, dump them ourselves.
> */
> - lock_kernel();
>
> printk("%s(%d): unhandled unaligned exception\n",
> current->comm, task_pid_nr(current));
> --
> 1.7.1
I can apply this without any other patches in the series, since the
usage is bogus, right?
Thanks,
Matt
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 05/18] alpha: kill big kernel lock
2010-09-14 19:41 ` Matt Turner
@ 2010-09-14 20:07 ` Arnd Bergmann
2010-09-14 20:12 ` Matt Turner
0 siblings, 1 reply; 6+ messages in thread
From: Arnd Bergmann @ 2010-09-14 20:07 UTC (permalink / raw)
To: Matt Turner; +Cc: Richard Henderson, Ivan Kokshaysky, linux-alpha
On Tuesday 14 September 2010 21:41:01 Matt Turner wrote:
> I can apply this without any other patches in the series, since the
> usage is bogus, right?
Yes, definitely.
Arnd
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 05/18] alpha: kill big kernel lock
2010-09-14 20:07 ` Arnd Bergmann
@ 2010-09-14 20:12 ` Matt Turner
0 siblings, 0 replies; 6+ messages in thread
From: Matt Turner @ 2010-09-14 20:12 UTC (permalink / raw)
To: Arnd Bergmann; +Cc: Richard Henderson, Ivan Kokshaysky, linux-alpha
On Tue, Sep 14, 2010 at 4:07 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> On Tuesday 14 September 2010 21:41:01 Matt Turner wrote:
>> I can apply this without any other patches in the series, since the
>> usage is bogus, right?
>
> Yes, definitely.
>
> Arnd
Will do so then. Thanks for the patch!
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 00/18] Make the big kernel lock optional
2010-09-14 19:34 [PATCH 00/18] Make the big kernel lock optional Arnd Bergmann
2010-09-14 19:34 ` [PATCH 05/18] alpha: kill big kernel lock Arnd Bergmann
@ 2010-09-15 9:37 ` Stephen Rothwell
1 sibling, 0 replies; 6+ messages in thread
From: Stephen Rothwell @ 2010-09-15 9:37 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Matt, linux-sh, Roman Zippel, linux-pci, Heiko Carstens, Picco,
Jaroslav Kysela, netdev, Thomas Gleixner, linux-s390,
Jesper Nilsson, Mark Gross, Helge Deller, James E.J. Bottomley,
Uytterhoeven, Karsten, Geert, Ingo Molnar, linux-media,
user-mode-linux-devel, Clemens Ladisch, Jeff Dike,
Mauro Carvalho Chehab, Mikael Starvik, Tejun Heo, linux-m68k,
Ivan Kokshaysky, Jesse Barnes
[-- Attachment #1.1: Type: text/plain, Size: 1739 bytes --]
On Tue, 14 Sep 2010 21:34:51 +0200 Arnd Bergmann <arnd@arndb.de> wrote:
>
> Stephen, please add
> git+ssh://master.kernel.org/pub/scm/linux/kernel/git/arnd/bkl.git config
Added from today.
Thanks for adding your subsystem tree as a participant of linux-next. As
you may know, this is not a judgment of your code. The purpose of
linux-next is for integration testing and to lower the impact of
conflicts between subsystems in the next merge window.
You will need to ensure that the patches/commits in your tree/series have
been:
* submitted under GPL v2 (or later) and include the Contributor's
Signed-off-by,
* posted to the relevant mailing list,
* reviewed by you (or another maintainer of your subsystem tree),
* successfully unit tested, and
* destined for the current or next Linux merge window.
Basically, this should be just what you would send to Linus (or ask him
to fetch). It is allowed to be rebased if you deem it necessary.
--
Cheers,
Stephen Rothwell
sfr@canb.auug.org.au
Legal Stuff:
By participating in linux-next, your subsystem tree contributions are
public and will be included in the linux-next trees. You may be sent
e-mail messages indicating errors or other issues when the
patches/commits from your subsystem tree are merged and tested in
linux-next. These messages may also be cross-posted to the linux-next
mailing list, the linux-kernel mailing list, etc. The linux-next tree
project and IBM (my employer) make no warranties regarding the linux-next
project, the testing procedures, the results, the e-mails, etc. If you
don't agree to these ground rules, let me know and I'll remove your tree
from participation in linux-next.
[-- Attachment #1.2: Type: application/pgp-signature, Size: 490 bytes --]
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------------------------------------------------------------------------------
Start uncovering the many advantages of virtual appliances
and start using them to simplify application deployment and
accelerate your shift to cloud computing.
http://p.sf.net/sfu/novell-sfdev2dev
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