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* taint: add explicit flag to show whether lock dep is still OK.Rusty Russell2013-01-21
| | | | | | | 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>
* sh: Consolidate die definitions for trap handlers.Paul Mundt2012-06-14
| | | | | | | This kills off the _64 versions and consolidates on the more robust _32 versions instead. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Disintegrate asm/system.h for SHDavid Howells2012-03-28
| | | | | | | Disintegrate asm/system.h for SH. Signed-off-by: David Howells <dhowells@redhat.com> cc: linux-sh@vger.kernel.org
* sh: Mass ctrl_in/outX to __raw_read/writeX conversion.Paul Mundt2010-01-25
| | | | | | | | | | | The old ctrl in/out routines are non-portable and unsuitable for cross-platform use. While drivers/sh has already been sanitized, there is still quite a lot of code that is not. This converts the arch/sh/ bits over, which permits us to flag the routines as deprecated whilst still building with -Werror for the architecture code, and to ensure that future users are not added. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh64: Fix up the CONFIG_GENERIC_BUG=n build.Paul Mundt2009-11-12
| | | | | | | sh64 doesn't use GENERIC_BUG, which presently causes the handle_BUG() code to blow up. Fix up the dependencies and get it all building again. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Count NMIs in irq_cpustat_t.Paul Mundt2009-10-14
| | | | | | | This plugs in support for NMI counting per-CPU via irq_cpustat_t. Modelled after the x86 implementation. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: nmi_debug support.Paul Mundt2009-09-01
| | | | | | | | | | | | | This implements support for NMI debugging that was shamelessly copied from the avr32 port. A bit of special magic is needed in the interrupt exception path given that the NMI exception handler is stubbed in to the regular exception handling table despite being reported in INTEVT. So we mangle the lookup and kick off an EXPEVT-style exception dispatch from the INTEVT path for exceptions that do_IRQ() has no chance of handling. As a result, we also drop the evt2irq() conversion from the do_IRQ() path and just do it in assembly. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: unwinder: Use a special bug flag for unwinder traps.Paul Mundt2009-08-21
| | | | | | | | | This simplifies the unwinder trap handling, dropping the use of the special trapa vector and simply piggybacking on top of the BUG support. A new BUGFLAG_UNWINDER is added for flagging the unwinder fault, before continuing on with regular BUG dispatch. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: unwinder: Introduce UNWINDER_BUG() and UNWINDER_BUG_ON()Matt Fleming2009-08-21
| | | | | | | | | | | | | | We can't assume that if we execute the unwinder code and the unwinder was already running that it has faulted. Clearly two kernel threads can invoke the unwinder at the same time and may be running simultaneously. The previous approach used BUG() and BUG_ON() in the unwinder code to detect whether the unwinder was incapable of unwinding the stack, and that the next available unwinder should be used instead. A better approach is to explicitly invoke a trap handler to switch unwinders when the current unwinder cannot continue. Signed-off-by: Matt Fleming <matt@console-pimps.org>
* sh: unbreak WARN_ON()Magnus Damm2009-06-17
| | | | | | | | Fix WARN_ON() by modifying the bug trap handling code to always return in the in-kernel instruction pointer case. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Rename opcode_t to insn_size_t.Paul Mundt2009-05-09
| | | | | | This is now clashing with a driver, so just rename it. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Make is_valid_bugaddr() more intelligent on nommu.Paul Mundt2008-05-19
| | | | | | | | | Currently is_valid_bugaddr() is true for anything >= PAGE_OFFSET, which happens to be 0 on nommu configurations. Make this a bit smarter by just reading in the opcode and comparing it against the trap type that we already know. Follows the logic from avr32. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fix the arch/sh/kernel/traps.c build for sh32.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Share bug/debug traps across _32 and _64.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Move in the SH-5 traps.c impl.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Use helpers to obtain task pid in printks (arch code)Alexey Dobriyan2007-10-19
| | | | | | | | | | | | | | | 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>
* sh: Bring SMP support back from the dead.Paul Mundt2007-09-21
| | | | | | | | | | | There was a very preliminary bunch of SMP code scattered around for the SH7604 microcontrollers from way back when, and it has mostly suffered bitrot since then. With the tree already having been slowly getting prepped for SMP, this plugs in most of the remaining platform-independent bits. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fix SH-X3 FPU exception handling.Paul Mundt2007-08-01
| | | | | | | | | SH-X3 has the FPU exceptions on different vectors completely, patch in do_fpu_state_restore() to the proper vectors. Results in a much happier userspace. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Report that kernel is tainted if there was an OOPSPavel Emelianov2007-07-17
| | | | | | | | | | | | | | 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>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds2007-07-16
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: (68 commits) sh: sh-rtc support for SH7709. sh: Revert __xdiv64_32 size change. sh: Update r7785rp defconfig. sh: Export div symbols for GCC 4.2 and ST GCC. sh: fix race in parallel out-of-tree build sh: Kill off dead mach.c for hp6xx. sh: hd64461.h cleanup and added comments. sh: Update the alignment when 4K stacks are used. sh: Add a .bss.page_aligned section for 4K stacks. sh: Don't let SH-4A clobber SH-4 CFLAGS. sh: Add parport stub for SuperIO ports. sh: Drop -Wa,-dsp for DSP tuning. sh: Update dreamcast defconfig. fb: pvr2fb: A few more __devinit annotations for PCI. fb: pvr2fb: Fix up section mismatch warnings. sh: Select IPR-IRQ for SH7091. sh: Correct __xdiv64_32/div64_32 return value size. sh: Fix timer-tmu build for SH-3. sh: Add cpu and mach links to CLEAN_FILES. sh: Preliminary support for the SH-X3 CPU. ...
| * sh: Tidy compiler warnings for SH-2A build.Paul Mundt2007-06-07
| | | | | | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Shut up SH2-DSP compile warnings.Paul Mundt2007-06-07
| | | | | | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: __user annotations for __get/__put_user().Paul Mundt2007-06-07
| | | | | | | | | | | | | | | | This adds in some more __user annotations. These weren't being handled properly in some of the __get_user and __put_user paths, so tidy those up. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | generic bug: use show_regs() instead of dump_stack()Heiko Carstens2007-07-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current generic bug implementation has a call to dump_stack() in case a WARN_ON(whatever) gets hit. Since report_bug(), which calls dump_stack(), gets called from an exception handler we can do better: just pass the pt_regs structure to report_bug() and pass it to show_regs() in case of a warning. This will give more debug informations like register contents, etc... In addition this avoids some pointless lines that dump_stack() emits, since it includes a stack backtrace of the exception handler which is of no interest in case of a warning. E.g. on s390 the following lines are currently always present in a stack backtrace if dump_stack() gets called from report_bug(): [<000000000001517a>] show_trace+0x92/0xe8) [<0000000000015270>] show_stack+0xa0/0xd0 [<00000000000152ce>] dump_stack+0x2e/0x3c [<0000000000195450>] report_bug+0x98/0xf8 [<0000000000016cc8>] illegal_op+0x1fc/0x21c [<00000000000227d6>] sysc_return+0x0/0x10 Acked-by: Jeremy Fitzhardinge <jeremy@goop.org> Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Andi Kleen <ak@suse.de> Cc: Kyle McMartin <kyle@parisc-linux.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | sh: oops_enter()/oops_exit() in die().Paul Mundt2007-06-18
|/ | | | | | | | | | | | As Russell helpfully pointed out on linux-arch: http://marc.info/?l=linux-arch&m=118208089204630&w=2 We were missing the oops_enter/exit() in the sh die() implementation. As we do support lockdep, it's beneficial to add these calls so lockdep properly disables itself in the die() case. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Wire up kdump crash kernel exec in die().Paul Mundt2007-05-21
| | | | | | | Now that we have the basic kdump support in place, add it in to die() so we can enter the crash kernel automatically. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* spelling fixes: arch/sh/Simon Arlott2007-05-21
| | | | | | | Spelling fixes in arch/sh/. Signed-off-by: Simon Arlott <simon@fire.lp0.eu> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Convert to common die chain.Paul Mundt2007-05-08
| | | | | | | This went in immediately after SH added the die chain notifiers, so move over to that instead.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fix PC adjustments for varying opcode length.Paul Mundt2007-05-08
| | | | | | | | | | | | | | | | | | | | There are a few different cases for figuring out how to size the instruction. We read in the instruction located at regs->pc - 4 when rewinding the opcode to figure out if there's a 32-bit opcode before the faulting instruction, with a default of a - 2 adjustment on a mismatch. In practice this works for the cases where pc - 4 is just another 16-bit opcode, or we happen to have a 32-bit and a 16-bit immediately preceeding the pc value. In the cases where we aren't rewinding, this is much less ugly.. We also don't bother fixing up the places where we're explicitly dealing with 16-bit instructions, since this might lead to confusion regarding the encoding size possibilities on other CPU variants. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Add die chain notifiers.Paul Mundt2007-05-06
| | | | | | Add the atomic die chains in, kprobes needs these. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: generic BUG() support.Paul Mundt2007-05-06
| | | | | | | | | Wire up GENERIC_BUG for SH. This moves off of the special bug frame and on to the generic struct bug_entry. Roughly the same semantics are retained, and we can kill off some of the verbose BUG() reporting code. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fixup cpu_data references for the non-boot CPUs.Paul Mundt2007-02-12
| | | | | | | There are a lot of bogus cpu_data-> references that only end up working for the boot CPU, convert these to current_cpu_data to fixup SMP. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fix handle_BUG() compile error.Nobuhiro Iwamatsu2007-02-12
| | | | | | | | handle_BUG() uses TRAPA_BUG_OPCODE which is only defined for CONFIG_BUG, make sure it's not built when CONFIG_BUG=n. Signed-off-by: Nobuhiro Iwamatsu <hemamu@t-base.ne.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: BUG() handling through trapa vector.Paul Mundt2006-12-11
| | | | | | | | | | | | | Previously we haven't been doing anything with verbose BUG() reporting, and we've been relying on the oops path for handling BUG()'s, which is rather sub-optimal. This switches BUG handling to use a fixed trapa vector (#0x3e) where we construct a small bug frame post trapa instruction to get the context right. This also makes it trivial to wire up a DIE_BUG for the atomic die chain, which we couldn't really do before. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: show held locks in stack trace with lockdep.Paul Mundt2006-12-05
| | | | | | Follows the same change as other architectures.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Set up correct siginfo structures for page faults.Stuart Menefy2006-12-05
| | | | | | | | Remove the previous saving of fault codes into the thread_struct as they are never used, and appeared to be inherited from x86. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: gcc4 support.Stuart Menefy2006-12-05
| | | | | | | | | | | | This fixes up the kernel for gcc4. The existing exception handlers needed some wrapping for pt_regs access, acessing the registers via a RELOC_HIDE() pointer. The strcpy() issues popped up here too, so add -ffreestanding and kill off the symbol export. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: SE7206 build fixes.Paul Mundt2006-12-05
| | | | | | | A number of API changes happened underneath the 7206 patches, update for everything that broke. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Wire up division and address error exceptions on SH-2A.Yoshinori Sato2006-12-05
| | | | | | | | SH-2A has special division hardware as opposed to a full-fledged FPU, wire up the exception handlers for this. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fix exception_handling_table alignment.Paul Mundt2006-10-19
| | | | | | | | | | | With the recent change ripping out interrupt_table, explicit padding of the table was missing, causing bad things to happen when manually inserting handlers in to the table. This problem particularly showed up in relation to do_fpu_state_restore() which was inserted quite deeply in to the table and ended up scribbling over a slab object. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Proper show_stack/show_trace() implementation.Paul Mundt2006-10-19
| | | | | | | | | | This splits out some of the previous show_stack() implementation which was mostly doing the show_trace() work without actually dumping any of the stack contents. This now gets split in to two sections, where we do the fetching of the stack pointer and subsequent stack dumping in show_stack(), while moving the call trace in to show_trace(). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Add support for 4K stacks.Paul Mundt2006-09-27
| | | | | | | | | This enables support for 4K stacks on SH. Currently this depends on DEBUG_KERNEL, but likely all boards will switch to this as the default in the future. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: math-emu supportTakashi YOSHII2006-09-27
| | | | | | | This implements initial math-emu support, aimed primarily at SH-3. Signed-off-by: Takashi YOSHII <takasi-y@ops.dti.ne.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fixup some uninitialized spinlocks.Paul Mundt2006-09-26
| | | | | | Fix use of uninitialized spinlocks, caught with spinlock debugging.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-30
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-16
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!
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