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* MIPS: MIPS16e: Add unaligned access support.Steven J. Hill2013-05-091-0/+255
| | | | | | | Add logic needed to handle unaligned accesses in MIPS16e mode. Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com> Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
* MIPS: microMIPS: Add unaligned access support.Leonid Yegoshin2013-05-091-201/+1011
| | | | | | | Add logic needed to handle unaligned accesses in microMIPS mode. Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com> Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
* MIPS: microMIPS: Floating point support.Leonid Yegoshin2013-05-091-4/+18
| | | | | | | Add logic needed to do floating point emulation in microMIPS mode. Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com> Signed-off-by: Steven J. Hill <Steven. Hill@imgtec.com>
* MIPS: Whitespace cleanup.Ralf Baechle2013-02-011-17/+17
| | | | | | | | Having received another series of whitespace patches I decided to do this once and for all rather than dealing with this kind of patches trickling in forever. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Disintegrate asm/system.h for MIPSDavid Howells2012-03-281-1/+0
| | | | | | | | Disintegrate asm/system.h for MIPS. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> cc: linux-mips@linux-mips.org
* mips: remove needless include of module.h from core kernel files.Paul Gortmaker2011-10-311-1/+0
| | | | | | | | None of these files are using modular infrastructure, and build tests reveal that none of these files are really relying on any implicit inclusions via. module.h either. So delete them. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* perf: Remove the nmi parameter from the swevent and overflow interfacePeter Zijlstra2011-07-011-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The nmi parameter indicated if we could do wakeups from the current context, if not, we would set some state and self-IPI and let the resulting interrupt do the wakeup. For the various event classes: - hardware: nmi=0; PMI is in fact an NMI or we run irq_work_run from the PMI-tail (ARM etc.) - tracepoint: nmi=0; since tracepoint could be from NMI context. - software: nmi=[0,1]; some, like the schedule thing cannot perform wakeups, and hence need 0. As one can see, there is very little nmi=1 usage, and the down-side of not using it is that on some platforms some software events can have a jiffy delay in wakeup (when arch_irq_work_raise isn't implemented). The up-side however is that we can remove the nmi parameter and save a bunch of conditionals in fast paths. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Michael Cree <mcree@orcon.net.nz> Cc: Will Deacon <will.deacon@arm.com> Cc: Deng-Cheng Zhu <dengcheng.zhu@gmail.com> Cc: Anton Blanchard <anton@samba.org> Cc: Eric B Munson <emunson@mgebm.net> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: David S. Miller <davem@davemloft.net> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Don Zickus <dzickus@redhat.com> Link: http://lkml.kernel.org/n/tip-agjev8eu666tvknpb3iaj0fg@git.kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
* MIPS: add support for software performance eventsDeng-Cheng Zhu2010-10-291-0/+7
| | | | | | | | | | | | | | | | | | | | | | | Software events are required as part of the measurable stuff by the Linux performance counter subsystem. Here is the list of events added by this patch: PERF_COUNT_SW_PAGE_FAULTS PERF_COUNT_SW_PAGE_FAULTS_MIN PERF_COUNT_SW_PAGE_FAULTS_MAJ PERF_COUNT_SW_ALIGNMENT_FAULTS PERF_COUNT_SW_EMULATION_FAULTS Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@gmail.com> To: linux-mips@linux-mips.org Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org Cc: mingo@elte.hu Cc: acme@redhat.com Cc: jamie.iles@picochip.com Acked-by: David Daney <ddaney@caviumnetworks.com> Reviewed-by: Matt Fleming <matt@console-pimps.org> Patchwork: https://patchwork.linux-mips.org/patch/1686/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Sanitize restart logicsAl Viro2010-10-181-2/+0
| | | | | | | | | | | | | | | Put the original syscall number into ->regs[0] when we leave syscall with error. Use it in restart logics. Everything else will have it 0 since we pass through SAVE_SOME on all the ways in. Note that in places like bad_stack and inllegal_syscall we leave it 0 - it's not restartable. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1698/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Modularize COP2 handlingRalf Baechle2009-12-171-7/+18
| | | | | | | Away with the daemons of ifdef; get ready for future COP2 users. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Patchwork: http://patchwork.linux-mips.org/patch/708/
* MIPS: Use force_sig when handling address errors.David Daney2009-05-141-3/+3
| | | | | | | | | | | | | | When init is started it is SIGNAL_UNKILLABLE. If it were to get an address error, we would try to send it SIGBUS, but it would be ignored and the faulting instruction restarted. This results in an endless loop. We need to use force_sig() instead so it will actually die and give us some useful information. Reported-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Switch FPU emulator trap to BREAK instruction.Ralf Baechle2008-10-301-12/+0
| | | | | | | | | | | | Arguably using the address error handler has always been ugly. But with processors that handle unaligned loads and stores in hardware the current mechanism ceases to work so switch it to a BREAK instruction and allocate break code 514 to the FPU emulator. Yoichi Yuasa provided a build fix for CONFIG_BUG=n. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
* MIPS: Fix debugfs_create_*'s error checking method for mips/kernel/Zhaolei2008-10-271-4/+4
| | | | | | | | | debugfs_create_*() returns NULL on error. Make its callers return -ENODEV on error. Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com> Acked-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Fix "no space between function name and open parenthesis" warnings.Ralf Baechle2007-10-111-1/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Fix build warning in unaligned load/store emulator.Ralf Baechle2007-07-311-31/+20
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Fixup secure computing stuff.Ralf Baechle2007-07-311-1/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Add some debugfs files to debug unaligned accessesAtsushi Nemoto2007-07-101-3/+38
| | | | | | | | | | | | | | | Currently a number of unaligned instructions is counted but not used. Add /debug/mips/unaligned_instructions file to show the value. And add /debug/mips/unaligned_action to control behavior upon an unaligned access. Possible actions are: 0: silently fixup the unaligned access. 1: send SIGBUS. 2: dump registers, process name, etc. and fixup. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Detach sched.h from mm.hAlexey Dobriyan2007-05-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | First thing mm.h does is including sched.h solely for can_do_mlock() inline function which has "current" dereference inside. By dealing with can_do_mlock() mm.h can be detached from sched.h which is good. See below, why. This patch a) removes unconditional inclusion of sched.h from mm.h b) makes can_do_mlock() normal function in mm/mlock.c c) exports can_do_mlock() to not break compilation d) adds sched.h inclusions back to files that were getting it indirectly. e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were getting them indirectly Net result is: a) mm.h users would get less code to open, read, preprocess, parse, ... if they don't need sched.h b) sched.h stops being dependency for significant number of files: on x86_64 allmodconfig touching sched.h results in recompile of 4083 files, after patch it's only 3744 (-8.3%). Cross-compile tested on all arm defconfigs, all mips defconfigs, all powerpc defconfigs, alpha alpha-up arm i386 i386-up i386-defconfig i386-allnoconfig ia64 ia64-up m68k mips parisc parisc-up powerpc powerpc-up s390 s390-up sparc sparc-up sparc64 sparc64-up um-x86_64 x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig as well as my two usual configs. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* header cleaning: don't include smp_lock.h when not usedRandy Dunlap2007-05-081-1/+0
| | | | | | | | | | | | Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [MIPS] Always fixup unaligned accesses in kernel mode.Ralf Baechle2007-02-261-1/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-301-1/+0
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* Sparseify MIPS.Ralf Baechle2005-10-291-5/+5
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [PATCH] mips: clean up 32/64-bit configurationRalf Baechle2005-09-051-6/+6
| | | | | | | | 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>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-161-0/+550
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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