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2006-01-10Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds
2006-01-10[PATCH] sanitize building of fs/compat_ioctl.cChristoph Hellwig
Now that all these entries in the arch ioctl32.c files are gone [1], we can build fs/compat_ioctl.c as a normal object and kill tons of cruft. We need a special do_ioctl32_pointer handler for s390 so the compat_ptr call is done. This is not needed but harmless on all other architectures. Also remove some superflous includes in fs/compat_ioctl.c Tested on ppc64. [1] parisc still had it's PPP handler left, which is not fully correct for ppp and besides that ppp uses the generic SIOCPRIV ioctl so it'd kick in for all netdevice users. We can introduce a proper handler in one of the next patch series by adding a compat_ioctl method to struct net_device but for now let's just kill it - parisc doesn't compile in mainline anyway and I don't want this to block this patchset. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Matthew Wilcox <willy@debian.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-10MIPS: Namespace pollution: dump_regs() -> elf_dump_regs()Al Viro
dump_regs() is used by a bunch of drivers for their internal stuff; renamed mips instance (one that is seen in system-wide headers) to elf_dump_regs() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-01-10MIPS: Oprofile: Fixup the loose ends in the plumbing.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-01-10MIPS: Introduce machinery for testing for MIPSxxR1/2.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-01-10MIPS: Rename MIPS_CPU_ISA_M{32,64} -> MIPS_CPU_ISA_M{32,64}R1.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-01-10MIPS: MT: Fix 32-bit dependencies.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-01-10MIPS: DSP: Put DSPcontrol register into the right place in the signal frame.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-01-10MIPS: DSP: eleminate used_dsp.Ralf Baechle
used_dsp was meant to be used like used_math - but since the FPU context is small and lazy context switching is a stupid idea on multiprocessors this idea only got halfway implemented and those bits are were now breaking ptrace. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-01-09[PATCH] Fix more "if ((err = foo() < 0))" typosAlexey Dobriyan
Another reason to use: ret = foo(); if (ret < 0) goto out; Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08[PATCH] use ptrace_get_task_struct in various placesChristoph Hellwig
The ptrace_get_task_struct() helper that I added as part of the ptrace consolidation is useful in variety of places that currently opencode it. Switch them to the common helpers. Add a ptrace_traceme() helper that needs to be explicitly called, and simplify the ptrace_get_task_struct() interface. We don't need the request argument now, and we return the task_struct directly, using ERR_PTR() for error returns. It's a bit more code in the callers, but we have two sane routines that do one thing well now. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-04Relax the rw_verify_area() error checking.Linus Torvalds
In particular, allow over-large read- or write-requests to be downgraded to a more reasonable range, rather than considering them outright errors. We want to protect lower layers from (the sadly all too common) overflow conditions, but prefer to do so by chopping the requests up, rather than just refusing them outright. Cc: Peter Anvin <hpa@zytor.com> Cc: Ulrich Drepper <drepper@redhat.com> Cc: Andi Kleen <ak@suse.de> Cc: Al Viro <viro@ftp.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-01[MIPS] Avoid duplicate do_syscall_trace calls on return from sigreturn.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-12-01[MIPS] Fix register handling in syscalls when debugging.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-12-01[MIPS] Fix return path of sysmips(MIPS_ATOMIC_SET, ...)Ralf Baechle
The way we were doing things does no longer work on 2.6. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-12-01[MIPS] Generate SIGILL againDaniel Jacobowitz
The rdhwr emulation accidentally swallowed the SIGILL from most other illegal instructions. Make sure to return -EFAULT by default. Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-12-01[MIPS] R10000 and R12000 need to set MIPS_CPU_4K_CACHE ...Ralf Baechle
... because they have R4000-style caches. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-09[PATCH] sched: disable preempt in idle tasksNick Piggin
Run idle threads with preempt disabled. Also corrected a bugs in arm26's cpu_idle (make it actually call schedule()). How did it ever work before? Might fix the CPU hotplugging hang which Nigel Cunningham noted. We think the bug hits if the idle thread is preempted after checking need_resched() and before going to sleep, then the CPU offlined. After calling stop_machine_run, the CPU eventually returns from preemption and into the idle thread and goes to sleep. The CPU will continue executing previous idle and have no chance to call play_dead. By disabling preemption until we are ready to explicitly schedule, this bug is fixed and the idle threads generally become more robust. From: alexs <ashepard@u.washington.edu> PPC build fix From: Yoichi Yuasa <yuasa@hh.iij4u.or.jp> MIPS build fix Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09[PATCH] remove ioctl32_handler_tChristoph Hellwig
Some architectures define and use this type in their compat_ioctl code, but all of them can easily use the identical ioctl_trans_handler_t type that is defined in common code. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds
2005-11-07Fix return type of setup_frame variantsAtsushi Nemoto
Since 2.6.13-rc1 setup_frame and its variants return int. But some bits were missed in the conversion. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-07IRIX: Use schedule_timeout_interruptible.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-07VPE loader janitoringRalf Baechle
o Switch to dynamic major o Remove duplicate SHN_MIPS_SCOMMON definition o Coding style: remove typedefs. o Coding style: reorder to avoid the need for forward declarations o Use kzalloc. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-07Turn rtlx upside down.Ralf Baechle
o Coding style o Race condition on open o Switch to dynamic major o Header file cleanup Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-07[PATCH] consolidate sys_ptrace()Christoph Hellwig
The sys_ptrace boilerplate code (everything outside the big switch statement for the arch-specific requests) is shared by most architectures. This patch moves it to kernel/ptrace.c and leaves the arch-specific code as arch_ptrace. Some architectures have a too different ptrace so we have to exclude them. They continue to keep their implementations. For sh64 I had to add a sh64_ptrace wrapper because it does some initialization on the first call. For um I removed an ifdefed SUBARCH_PTRACE_SPECIAL block, but SUBARCH_PTRACE_SPECIAL isn't defined anywhere in the tree. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Paul Mackerras <paulus@samba.org> Acked-by: Ralf Baechle <ralf@linux-mips.org> Acked-By: David Howells <dhowells@redhat.com> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30[PATCH] jiffies_64 cleanupThomas Gleixner
Define jiffies_64 in kernel/timer.c rather than having 24 duplicated defines in each architecture. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30[PATCH] unify sys_ptrace prototypeChristoph Hellwig
Make sure we always return, as all syscalls should. Also move the common prototype to <linux/syscalls.h> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30[PATCH] Don't uselessly export task_struct to userspace in core dumpsEric W. Biederman
task_struct is an internal structure to the kernel with a lot of good information, that is probably interesting in core dumps. However there is no way for user space to know what format that information is in making it useless. I grepped the GDB 6.3 source code and NT_TASKSTRUCT while defined is not used anywhere else. So I would be surprised if anyone notices it is missing. In addition exporting kernel pointers to all the interesting kernel data structures sounds like the very definition of an information leak. I haven't a clue what someone with evil intentions could do with that information, but in any attack against the kernel it looks like this is the perfect tool for aiming that attack. So since NT_TASKSTRUCT is useless as currently defined and is potentially dangerous, let's just not export it. (akpm: Daniel Jacobowitz <dan@debian.org> "would be amazed" if anything was using NT_TASKSTRUCT). Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29[PATCH] mm: mm_init set_mm_countersHugh Dickins
How is anon_rss initialized? In dup_mmap, and by mm_alloc's memset; but that's not so good if an mm_counter_t is a special type. And how is rss initialized? By set_mm_counter, all over the place. Come on, we just need to initialize them both at once by set_mm_counter in mm_init (which follows the memcpy when forking). Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29Remove useless casts of kmalloc return values.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Add support for SB1A CPU.Andrew Isaacson
Signed-Off-By: Andy Isaacson <adi@broadcom.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Sibyte fixesAndrew Isaacson
Fix typo in cpu_probe_sibyte. Signed-Off-By: Andy Isaacson <adi@broadcom.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Get 64-bit right in the kgdb stub.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Sys_lookup_dcookie arguments occupy 4 argument slots.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29FPU emulator garbage collection.Ralf Baechle
First argument of fpu_emulator_cop1Handler() was unused. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Don't print file name and line in die and die_if_kernel.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Date: Fri Jan 14 03:03:23 2005 +0000Ralf Baechle
Locking cleanups. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Fixup a few lose ends in explicit support for MIPS R1/R2.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Protect manipulation of c0_status against preemption and multithreading.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Detect 4KSD and treat it like 4KSc.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Define and initialize kdb_lock using DEFINE_SPINLOCK.Ralf Baechle
Convert kgdb_cpulock into a raw_spinlock_t. SPIN_LOCK_UNLOCKED is deprecated and it's replacement DEFINE_SPINLOCK is not suitable for arrays of spinlocks. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Make kgdb_wait static.Ralf Baechle
Nothing outside gdb-stub.c uses kgdb_wait, so change it's definition to static. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Cleanup the mess in cpu_cache_init.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Support for MIPSsim, the cycle accurate MIPS simulator.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Switch Sibyte profiling driver to ->compat_ioctlRalf Baechle
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Revise MIPS 64-bit ptrace interfaceDaniel Jacobowitz
Change the N32 debugging ABI to something more sane, and add support for o32 and n32 debuggers to trace n64 programs. Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Fix excessive signal latencies.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Move genrtc.c's functions into <asm/rtc.h>Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Virtual SMP support for the 34K.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29MT bulletproofing.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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