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* IP22ZILOG: fix lockup and sysrqThomas Bogendoerfer2007-11-291-2/+0
| | | | | | | | | | | | - fix lockup when switching from early console to real console - make sysrq reliable - fix panic, if sysrq is issued before console is opened Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Acked-by: Ralf Baechle <ralf@linux-mips.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [MIPS] Fix context DSP context / TLS pointer switching bug for new threads.Ralf Baechle2007-11-261-2/+6
| | | | | | | | | | | | | | | | | | | | | | | A new born thread starts execution not in schedule but rather in ret_from_fork which results in it bypassing the part of the code to load a new context written in C which are the DSP context and the userlocal register which Linux uses for the TLS pointer. Frequently we were just getting away with this bug for a number of reasons: o Real world application scenarios are very unlikely to use clone or fork in blocks of DSP code. o Linux by default runs the child process right after the fork, so the child by luck will find all the right context in the DSP and userlocal registers. o So far the rdhwr instruction was emulated on all hardware so userlocal wasn't getting referenced at all and the emulation wasn't suffering from the issue since it gets it's value straight from the thread's thread_info. Fixed by moving the code to load the context from switch_to() to finish_arch_switch which will be called by newborn and old threads. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] checkfiles: Fix "need space after that ','" errors.Ralf Baechle2007-10-111-2/+2
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Fix "no space between function name and open parenthesis" warnings.Ralf Baechle2007-10-111-3/+3
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Type proof reimplementation of cmpxchg.Ralf Baechle2007-10-031-260/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Fixup secure computing stuff.Ralf Baechle2007-07-311-3/+5
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] User stack pointer randomisationFranck Bui-Huu2007-07-201-1/+1
| | | | | Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Make support for weakly ordered LL/SC a config option.Ralf Baechle2007-07-201-4/+4
| | | | | | | None of weakly ordered processor supported in tree need this but it seems like this could change ... Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [PATCH] sched: sched_cacheflush is now unusedRalf Baechle2007-07-191-10/+0
| | | | | | | | Since Ingo's recent scheduler rewrite which was merged as commit 0437e109e1841607f2988891eaa36c531c6aa6ac sched_cacheflush is unused. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* [MIPS] Non-FPAFF: Fix warning.Ralf Baechle2007-07-101-1/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Enable support for the userlocal hardware registerRalf Baechle2007-07-101-0/+2
| | | | | | | | Which will cut down the cost of RDHWR $29 which is used to obtain the TLS pointer and so far being emulated in software down to a single cycle operation. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] FP affinity: Coding style cleanups Ralf Baechle2007-07-101-7/+5
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Define and use vi_handler_t for vectored interrupt handlers.Ralf Baechle2007-05-111-1/+4
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* wrap access to thread_infoRoman Zippel2007-05-091-1/+1
| | | | | | | | | Recently a few direct accesses to the thread_info in the task structure snuck back, so this wraps them with the appropriate wrapper. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Remove tas()Jeff Dike2007-05-081-1/+0
| | | | | | | | | | tas() has no users, so get rid of it. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: <linux-arch@vger.kernel.org> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* local_t: mips extensionMathieu Desnoyers2007-05-081-1/+124
| | | | | | | Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [MIPS] Lockdep: Fix recursion bug.Ralf Baechle2007-03-171-8/+8
| | | | | | trace_hardirqs_off -> atomic_inc -> local_irq_restore -> trace_hardirqs_off Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Improve branch prediction in ll/sc atomic operations.Ralf Baechle2007-02-131-4/+16
| | | | | | | | | | | | Now that finally all supported versions of binutils have functioning support for .subsection use .subsection to tweak the branch prediction I did not modify the R10000 errata variants because it seems unclear if this will invalidate the workaround which actually relies on the cheesy prediction of branch likely to cause a misspredict if the sc was successful. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Move die and die_if_kernel() from system.h to ptrace.hRalf Baechle2006-12-101-9/+0
| | | | | | | This eleminates the need to include ptrace.h into system.h and fixes a harmless namespace conflict on the PC symbol in bpck.c. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Cleanup memory barriers for weakly ordered systems.Ralf Baechle2006-12-041-146/+10
| | | | | | | Also the R4000 / R4600 LL/SC instructions imply a sync so no explicit sync needed. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Don't use R10000 llsc workaround version for all llsc-full processors.Ralf Baechle2006-11-021-1/+1
| | | | | | Found and original patch by bile@landofbile.com. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [PATCH] remove set_wmb - arch removalSteven Rostedt2006-07-141-3/+0
| | | | | | | | | | | | | | | | set_wmb should not be used in the kernel because it just confuses the code more and has no benefit. Since it is not currently used in the kernel this patch removes it so that new code does not include it. All archs define set_wmb(var, value) to do { var = value; wmb(); } while(0) except ia64 and sparc which use a mb() instead. But this is still moot since it is not used anyway. Hasn't been tested on any archs but x86 and x86_64 (and only compiled tested) Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [MIPS] TRACE_IRQFLAGS_SUPPORT support.Ralf Baechle2006-07-131-1/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Don't include linux/config.h from anywhere else in include/David Woodhouse2006-04-261-1/+0
| | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [MIPS] FPU affinity for MT ASE.Ralf Baechle2006-04-191-0/+32
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Fix vectored interrupt support in TLB exception handler generator.Ralf Baechle2006-04-191-0/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Make set_vi_srs_handler static.Ralf Baechle2006-04-191-1/+0
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Reformat __xchg().Ralf Baechle2006-03-211-4/+4
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Use "=R" constraint to avoid compiler errors in cmpxchg().Ralf Baechle2006-02-271-4/+4
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [PATCH] mips: task_pt_regs()Al Viro2006-01-121-1/+1
| | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sched: add cacheflush() asmIngo Molnar2006-01-121-0/+10
| | | | | | | | | | Add per-arch sched_cacheflush() which is a write-back cacheflush used by the migration-cost calibration code at bootup time. Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Don't print file name and line in die and die_if_kernel.Ralf Baechle2005-10-291-9/+7
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Sprinkle a few more .set mipsX over xchg to make sure we dont' end up withRalf Baechle2005-10-291-0/+4
| | | | | | | 64-bit instructions on 32-bit processors, they tend to be unhappy about that kind of food ;-) Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Remove workaround for binutils 2.15 assembler bug; this version is notRalf Baechle2005-10-291-8/+0
| | | | | | | suitable to reliably build kernels anymore anyway and 2.16 has this fixed. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Add missing space.Ralf Baechle2005-10-291-1/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* More AP / SP bits for the 34K, the Malta bits and things. Still wantsRalf Baechle2005-10-291-0/+4
| | | | | | a little polishing. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* More .set to keep 32-bit processors happy.Ralf Baechle2005-10-291-0/+4
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Always use ".set mips3" rather than select between "mips2" or "mips3"Maciej W. Rozycki2005-10-291-5/+5
| | | | | | | for assembling ll/sc sequences to avoid problems with 64-bit configurations. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Mark __die() "noreturn" for real.Maciej W. Rozycki2005-10-291-1/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Enable a suitable ISA for the assembler around ll/sc so that codeMaciej W. Rozycki2005-10-291-4/+20
| | | | | | | builds even for processors that don't support the instructions. Plus minor formatting fixes. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Support the MIPS32 / MIPS64 DSP ASE.Ralf Baechle2005-10-291-3/+8
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [PATCH] mips: clean up 32/64-bit configurationRalf Baechle2005-09-051-2/+2
| | | | | | | | Start cleaning 32-bit vs. 64-bit configuration. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sched: cleanup context switch lockingNick Piggin2005-06-251-8/+2
| | | | | | | | | | | | | | | | Instead of requiring architecture code to interact with the scheduler's locking implementation, provide a couple of defines that can be used by the architecture to request runqueue unlocked context switches, and ask for interrupts to be enabled over the context switch. Also replaces the "switch_lock" used by these architectures with an oncpu flag (note, not a potentially slow bitflag). This eliminates one bus locked memory operation when context switching, and simplifies the task_running function. Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Linux-2.6.12-rc2Linus Torvalds2005-04-161-0/+438
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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