History log of /arch/m68k/kernel/traps.c
Revision Date Author Comments
245b815c3faf4a0509948618c35f993160e193a9 10-Dec-2013 Geert Uytterhoeven <geert@linux-m68k.org> m68k: Convert arch/m68k/kernel/traps.c to pr_*()

Also fix a few printf-style formats, to get rid of the following compiler
warnings when DEBUG is enabled:

arch/m68k/kernel/traps.c: In function ‘access_error060’:
arch/m68k/kernel/traps.c:166: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long unsigned int’
arch/m68k/kernel/traps.c: In function ‘bus_error030’:
arch/m68k/kernel/traps.c:568: warning: format ‘%#lx’ expects type ‘long unsigned int’, but argument 2 has type ‘void *’
arch/m68k/kernel/traps.c:682: warning: format ‘%#lx’ expects type ‘long unsigned int’, but argument 2 has type ‘void *’

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
196779b9b4ce1922afabdc20d0270720603bd46c 01-May-2013 Tejun Heo <tj@kernel.org> dump_stack: consolidate dump_stack() implementations and unify their behaviors

Both dump_stack() and show_stack() are currently implemented by each
architecture. show_stack(NULL, NULL) dumps the backtrace for the
current task as does dump_stack(). On some archs, dump_stack() prints
extra information - pid, utsname and so on - in addition to the
backtrace while the two are identical on other archs.

The usages in arch-independent code of the two functions indicate
show_stack(NULL, NULL) should print out bare backtrace while
dump_stack() is used for debugging purposes when something went wrong,
so it does make sense to print additional information on the task which
triggered dump_stack().

There's no reason to require archs to implement two separate but mostly
identical functions. It leads to unnecessary subtle information.

This patch expands the dummy fallback dump_stack() implementation in
lib/dump_stack.c such that it prints out debug information (taken from
x86) and invokes show_stack(NULL, NULL) and drops arch-specific
dump_stack() implementations in all archs except blackfin. Blackfin's
dump_stack() does something wonky that I don't understand.

Debug information can be printed separately by calling
dump_stack_print_info() so that arch-specific dump_stack()
implementation can still emit the same debug information. This is used
in blackfin.

This patch brings the following behavior changes.

* On some archs, an extra level in backtrace for show_stack() could be
printed. This is because the top frame was determined in
dump_stack() on those archs while generic dump_stack() can't do that
reliably. It can be compensated by inlining dump_stack() but not
sure whether that'd be necessary.

* Most archs didn't use to print debug info on dump_stack(). They do
now.

An example WARN dump follows.

WARNING: at kernel/workqueue.c:4841 init_workqueues+0x35/0x505()
Hardware name: empty
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.9.0-rc1-work+ #9
0000000000000009 ffff88007c861e08 ffffffff81c614dc ffff88007c861e48
ffffffff8108f50f ffffffff82228240 0000000000000040 ffffffff8234a03c
0000000000000000 0000000000000000 0000000000000000 ffff88007c861e58
Call Trace:
[<ffffffff81c614dc>] dump_stack+0x19/0x1b
[<ffffffff8108f50f>] warn_slowpath_common+0x7f/0xc0
[<ffffffff8108f56a>] warn_slowpath_null+0x1a/0x20
[<ffffffff8234a071>] init_workqueues+0x35/0x505
...

v2: CPU number added to the generic debug info as requested by s390
folks and dropped the s390 specific dump_stack(). This loses %ksp
from the debug message which the maintainers think isn't important
enough to keep the s390-specific dump_stack() implementation.

dump_stack_print_info() is moved to kernel/printk.c from
lib/dump_stack.c. Because linkage is per objecct file,
dump_stack_print_info() living in the same lib file as generic
dump_stack() means that archs which implement custom dump_stack()
- at this point, only blackfin - can't use dump_stack_print_info()
as that will bring in the generic version of dump_stack() too. v1
The v1 patch broke build on blackfin due to this issue. The build
breakage was reported by Fengguang Wu.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [s390 bits]
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Richard Kuo <rkuo@codeaurora.org> [hexagon bits]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
373d4d099761cb1f637bed488ab3871945882273 21-Jan-2013 Rusty Russell <rusty@rustcorp.com.au> taint: add explicit flag to show whether lock dep is still OK.

Fix up all callers as they were before, with make one change: an
unsigned module taints the kernel, but doesn't turn off lockdep.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
5fec45a20db3656ce36fac24639aac76c6641215 11-Nov-2012 Thomas Bogendoerfer <tsbogend@alpha.franken.de> m68k/sun3: Fix instruction faults

We need to bring in the page where the instruction fault happened.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
803f69144f0d48863c68f9d111b56849c7cef5bb 28-Mar-2012 David Howells <dhowells@redhat.com> Disintegrate asm/system.h for M68K

Disintegrate asm/system.h for M68K.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Greg Ungerer <gerg@uclinux.org>
cc: linux-m68k@lists.linux-m68k.org
2a3535069e33d8b416f406c159ce924427315303 09-Jan-2012 Andreas Schwab <schwab@linux-m68k.org> m68k: Fix assembler constraint to prevent overeager gcc optimisation

Passing the address of a variable as an operand to an asm statement
doesn't mark the value of this variable as used, so gcc may optimize its
initialisation away. Fix this by using the "m" constraint instead.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: stable@vger.kernel.org
78d705e3be4bfbd2e75157d284096d600ea6eda5 14-Oct-2011 Greg Ungerer <gerg@uclinux.org> m68k: add ColdFire paging exception handling code

Add code to traps.c to handle MMU exceptions for the ColdFire.
Most of this code is from the 2.6.25 kernel BSP code released by
Freescale.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
144077ead4428732d27553d3fa74f06f71c6438d 24-Jun-2011 Greg Ungerer <gerg@uclinux.org> m68k: merge the mmu and non-mmu traps.c files

The code for handling traps in the non-mmu case is a subset of the mmu
enabled case. Merge the non-mmu traps_no.c code back to a single traps.c.
There is actually no code mmu specific here at all, and the processor
specific code (for the more complex 68020/68030/68040/68060) is already
proplerly conditionaly used.

The format of console exception dump is a little different, but I don't
think will cause any one problems, it is purely for debug purposes.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
66d857b08b8c3ed5c72c361f863cce77d2a978d7 22-Mar-2011 Greg Ungerer <gerg@uclinux.org> m68k: merge m68k and m68knommu arch directories

There is a lot of common code that could be shared between the m68k
and m68knommu arch branches. It makes sense to merge the two branches
into a single directory structure so that we can more easily share
that common code.

This is a brute force merge, based on a script from Stephen King
<sfking@fdwdc.com>, which was originally written by Arnd Bergmann
<arnd@arndb.de>.

> The script was inspired by the script Sam Ravnborg used to merge the
> includes from m68knommu. For those files common to both arches but
> differing in content, the m68k version of the file is renamed to
> <file>_mm.<ext> and the m68knommu version of the file is moved into the
> corresponding m68k directory and renamed <file>_no.<ext> and a small
> wrapper file <file>.<ext> is used to select between the two version. Files
> that are common to both but don't differ are removed from the m68knommu
> tree and files and directories that are unique to the m68knommu tree are
> moved to the m68k tree. Finally, the arch/m68knommu tree is removed.
>
> To select between the the versions of the files, the wrapper uses
>
> #ifdef CONFIG_MMU
> #include <file>_mm.<ext>
> #else
> #include <file>_no.<ext>
> #endif

On top of this file merge I have done a simplistic merge of m68k and
m68knommu Kconfig, which primarily attempts to keep existing options and
menus in place. Other than a handful of options being moved it produces
identical .config outputs on m68k and m68knommu targets I tested it on.

With this in place there is now quite a bit of scope for merge cleanups
in future patches.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
cf6da575ad8d86afa591dd78114067bbff448c36 18-Nov-2008 Andreas Schwab <schwab@linux-m68k.org> m68k: Allow all kernel traps to be handled via exception fixups

This will be needed by the ARAnyM Native Feature initialization code.
Also document that the VEC_TRACE check is needed for 68020/30.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
f67080884a81f58cf95e25c284e30cbed21122a3 18-Nov-2008 Roman Zippel <zippel@linux-m68k.org> m68k: Use base_trap_init() to initialize vectors

So basic initialization is all in one place.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
b9b0d8b430ebd61d32e2a9544e75a3c4b10cddcd 06-Feb-2010 Frans Pop <elendil@planet.nl> m68k: Remove trailing spaces in messages

Signed-off-by: Frans Pop <elendil@planet.nl>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
9d35f8464dd51466e60447625784cf1740f03ff4 18-Jun-2009 Oleg Nesterov <oleg@redhat.com> ptrace: remove PT_DTRACE from m68k, m68knommu

m68k sets PT_DTRACE in trap_c() but never uses it.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Greg Ungerer <gerg@snapgear.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
0211a9c8508b2183e0e539509aad60414f1c3813 29-Dec-2008 Frederik Schwarzer <schwarzerf@gmail.com> trivial: fix an -> a typos in documentation and comments

It is always "an" if there is a vowel _spoken_ (not written).
So it is:
"an hour" (spoken vowel)
but
"a uniform" (spoken 'j')

Signed-off-by: Frederik Schwarzer <schwarzerf@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
8fbbae657305f83ed009143c4c7a8737d75621b2 13-Oct-2008 Geert Uytterhoeven <geert@linux-m68k.org> m68k: Use new printk() extension %pS to print symbols

This changes the oops and backtrace code to use the new `%pS' printk()
extension to print out symbols rather than manually calling print_symbol.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3b17f136bf32984eb0faeb116bcd44ffe3503782 05-May-2008 Roman Zippel <zippel@linux-m68k.org> m68k: Handle 68040 bus faults

Fix 68040 bus fault handling, so the standard kernel exception handling
can be used for i/o probing.

Contrary to normal access faults there is nothing to fix, but at least
we have to disable writebacks to avoid recursive faults.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1eb114112381eb66ebacdace1b6e70d30d603f9c 08-Feb-2008 David Howells <dhowells@redhat.com> aout: remove unnecessary inclusions of {asm, linux}/a.out.h

Remove now unnecessary inclusions of {asm,linux}/a.out.h.

[akpm@linux-foundation.org: fix alpha build]
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
19c5870c0eefd27c6d09d867465e0571262e05d0 19-Oct-2007 Alexey Dobriyan <adobriyan@openvz.org> Use helpers to obtain task pid in printks (arch code)

One of the easiest things to isolate is the pid printed in kernel log.
There was a patch, that made this for arch-independent code, this one makes
so for arch/xxx files.

It took some time to cross-compile it, but hopefully these are all the
printks in arch code.

Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
bcdcd8e725b923ad7c0de809680d5d5658a7bf8c 17-Jul-2007 Pavel Emelianov <xemul@openvz.org> Report that kernel is tainted if there was an OOPS

If the kernel OOPSed or BUGed then it probably should be considered as
tainted. Thus, all subsequent OOPSes and SysRq dumps will report the
tainted kernel. This saves a lot of time explaining oddities in the
calltraces.

Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Added parisc patch from Matthew Wilson -Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
ea5e1a827abe1e9ba1c8d214b7408b6c363d764a 10-Feb-2007 Ahmed S. Darwish <darwish.07@gmail.com> [PATCH] M68K: user ARRAY_SIZE macro when appropriate

Use ARRAY_SIZE macro already defined in linux/kernel.h

Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1e5c374d3833f816b4840227c6949f689af0cb44 11-Oct-2006 Al Viro <viro@ftp.linux.org.uk> [PATCH] misc m68k __user annotations

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
6ab3d5624e172c553004ecc862bfeac16d9d68b7 30-Jun-2006 Jörn Engel <joern@wohnheim.fh-wedel.de> Remove obsolete #include <linux/config.h>

Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
68387c448b7f2b3e2bfa0f606391cd3b602b1997 25-Jun-2006 Roman Zippel <zippel@linux-m68k.org> [PATCH] m68k: convert generic irq code to irq controller

Convert the generic irq code to use irq controller, this gets rid of the
machine specific callbacks and gives better control over irq handling without
duplicating lots of code.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
92445eaaadc1f03f5a177ecc957bda76bf2ba8d5 25-Jun-2006 Roman Zippel <zippel@linux-m68k.org> [PATCH] m68k: separate handler for auto and user vector interrupt

Use separate entry points for auto and user vector interrupts and cleanup
naming a little.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
f2325ecebc5b7988fd49968bd3a660fd1594dc84 25-Jun-2006 Roman Zippel <zippel@linux-m68k.org> [PATCH] m68k: fix show_registers()

Move some of the prints in die_if_kernel() to show_registers() and call that
instead of show_stack(), so show_registers() prints now similiar info as other
archs. Clean up the function a little.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
f1b5e520bb65e98d27632cd270d931838bd2a5da 23-Jun-2006 Al Viro <viro@ftp.linux.org.uk> [PATCH] m68k traps.c constraints

Cast is not an lvalue; =r constraint wants an lvalue and really couldn't
care whether it's void * or other pointer type.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
cb7d390df391402c9630940d5a2ea1571fc5cde2 23-Jun-2006 Roman Zippel <zippel@linux-m68k.org> [PATCH] m68k: print correct stack trace

Pass unmodified stack argument to show_trace().

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
a763be5c1aace94cf4adfc5ea164f5b0d2d255cd 12-Jan-2006 Al Viro <viro@ftp.linux.org.uk> [PATCH] m68k: fix use of void foo(void) asm("bar") in traps.c

with gcc4 these have file scope, so having them different in different
blocks doesn't work anymore

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 17-Apr-2005 Linus Torvalds <torvalds@ppc970.osdl.org> Linux-2.6.12-rc2

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!