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2005-07-26[PATCH] Add emergency_restart()Eric W. Biederman
When the kernel is working well and we want to restart cleanly kernel_restart is the function to use. But in many instances the kernel wants to reboot when thing are expected to be working very badly such as from panic or a software watchdog handler. This patch adds the function emergency_restart() so that callers can be clear what semantics they expect when calling restart. emergency_restart() is expected to be callable from interrupt context and possibly reliable in even more trying circumstances. This is an initial generic implementation for all architectures. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-12[ACPI] merge acpi-2.6.12 branch into latest Linux 2.6.13-rc...Len Brown
Signed-off-by: Len Brown <len.brown@intel.com>
2005-07-12[ACPI] PNPACPI vs sound IRQDavid Shaohua Li
http://bugme.osdl.org/show_bug.cgi?id=4016 Written-by: David Shaohua Li <shaohua.li@intel.com> Acked-by: Adam Belay <abelay@novell.com> Signed-off-by: Len Brown <len.brown@intel.com>
2005-06-29[PATCH] Serial: Split 8250 port table (part 2)Russell King
Remove legacy ISA serial ports for Accent, Boca, Fourport, Hub6 and MCA from the architecture specific serial.h include. The only ports which remain in asm-*/serial.h are the platform specific entries. These should really be converted by platform maintainers to use a platform device, such as can be found in arch/arm/mach-footbridge/isa.c Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-27[PATCH] PCI: fix up errors after dma bursting patch and CONFIG_PCI=nAndrew Morton
With CONFIG_PCI=n: In file included from include/linux/pci.h:917, from lib/iomap.c:6: include/asm/pci.h:104: warning: `enum pci_dma_burst_strategy' declared inside parameter list include/asm/pci.h:104: warning: its scope is only this definition or declaration, which is probably not what you want. include/asm/pci.h: In function `pci_dma_burst_advice': include/asm/pci.h:106: dereferencing pointer to incomplete type include/asm/pci.h:106: `PCI_DMA_BURST_INFINITY' undeclared (first use in this function) include/asm/pci.h:106: (Each undeclared identifier is reported only once include/asm/pci.h:106: for each function it appears in.) make[1]: *** [lib/iomap.o] Error 1 Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-27[PATCH] PCI: DMA bursting adviceDavid S. Miller
After seeing, at best, "guesses" as to the following kind of information in several drivers, I decided that we really need a way for platforms to specifically give advice in this area for what works best with their PCI controller implementation. Basically, this new interface gives DMA bursting advice on PCI. There are three forms of the advice: 1) Burst as much as possible, it is not necessary to end bursts on some particular boundary for best performance. 2) Burst on some byte count multiple. A DMA burst to some multiple of number of bytes may be done, but it is important to end the burst on an exact multiple for best performance. The best example of this I am aware of are the PPC64 PCI controllers, where if you end a burst mid-cacheline then chip has to refetch the data and the IOMMU translations which hurts performance a lot. 3) Burst on a single byte count multiple. Bursts shall end exactly on the next multiple boundary for best performance. Sparc64 and Alpha's PCI controllers operate this way. They disconnect any device which tries to burst across a cacheline boundary. Actually, newer sparc64 PCI controllers do not have this behavior. That is why the "pdev" is passed into the interface, so I can add code later to check which PCI controller the system is using and give advice accordingly. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-25[PATCH] sched: cleanup context switch lockingNick Piggin
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>
2005-06-25[PATCH] mips: add MIPS-specific support for flatmem/discontigmemYoichi Yuasa
2.6.12-git6 doesn't boot on some MIPS machines. They need the support of flat memory and discontig memory. 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>
2005-06-23[PATCH] compat: introduce compat_time_tStephen Rothwell
This patch is based on work by Carlos O'Donell and Matthew Wilcox. It introduces/updates the compat_time_t type and uses it for compat siginfo structures. I have built this on ppc64 and x86_64. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-23[PATCH] streamline preempt_count type across archsJesper Juhl
The preempt_count member of struct thread_info is currently either defined as int, unsigned int or __s32 depending on arch. This patch makes the type of preempt_count an int on all archs. Having preempt_count be an unsigned type prevents the catching of preempt_count < 0 bugs, and using int on some archs and __s32 on others is not exactely "neat" - much nicer when it's just int all over. A previous version of this patch was already ACK'ed by Robert Love, and the only change in this version of the patch compared to the one he ACK'ed is that this one also makes sure the preempt_count member is consistently commented. Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21[PATCH] mips: add vr41xx gpio supportYoichi Yuasa
Add vr41xx gpio support. Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21[PATCH] smp_processor_id() cleanupIngo Molnar
This patch implements a number of smp_processor_id() cleanup ideas that Arjan van de Ven and I came up with. The previous __smp_processor_id/_smp_processor_id/smp_processor_id API spaghetti was hard to follow both on the implementational and on the usage side. Some of the complexity arose from picking wrong names, some of the complexity comes from the fact that not all architectures defined __smp_processor_id. In the new code, there are two externally visible symbols: - smp_processor_id(): debug variant. - raw_smp_processor_id(): nondebug variant. Replaces all existing uses of _smp_processor_id() and __smp_processor_id(). Defined by every SMP architecture in include/asm-*/smp.h. There is one new internal symbol, dependent on DEBUG_PREEMPT: - debug_smp_processor_id(): internal debug variant, mapped to smp_processor_id(). Also, i moved debug_smp_processor_id() from lib/kernel_lock.c into a new lib/smp_processor_id.c file. All related comments got updated and/or clarified. I have build/boot tested the following 8 .config combinations on x86: {SMP,UP} x {PREEMPT,!PREEMPT} x {DEBUG_PREEMPT,!DEBUG_PREEMPT} I have also build/boot tested x64 on UP/PREEMPT/DEBUG_PREEMPT. (Other architectures are untested, but should work just fine.) Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-04[PATCH] asm/signal.h unificationAl Viro
New file - asm-generic/signal.h. Contains declarations of __sighandler_t, __sigrestore_t, SIG_DFL, SIG_IGN, SIG_ERR and default definitions of SIG_BLOCK, SIG_UNBLOCK and SIG_SETMASK. asm-*/signal.h switched to including it. The only exception is asm-parisc/signal.h that wants its own declaration of __sighandler_t; that one is left as-is. asm-ppc64/signal.h required one more thing - unlike everybody else it used __sigrestorer_t instead of usual __sigrestore_t. PPC64 switched to common spelling. Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01[PATCH] consolidate SIGEV_PAD_SIZEStephen Rothwell
Discussing with Matthew Wilcox some of his outstanding patches lead me to this patch (among others). The preamble in struct sigevent can be expressed independently of the architecture. Also use __ARCH_SI_PREAMBLE_SIZE on ia64. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01[PATCH] add EOWNERDEAD and ENOTRECOVERABLE version 2Joe Korty
Add EOWNERDEAD and ENOTRECOVERABLE to all architectures. This is to support the upcoming patches for robust mutexes. We normally don't reserve parts of the name/number space for external patches, but robust mutexes are sufficiently popular and important to justify it in this case. Signed-off-by: Joe Korty <joe.korty@ccur.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01[PATCH] move SA_xxx defines to linux/signal.hStas Sergeev
The attached patch moves the IRQ-related SA_xxx flags (namely, SA_PROBE, SA_SAMPLE_RANDOM and SA_SHIRQ) from all the arch-specific headers to linux/signal.h. This looks like a left-over after the irq-handling code was consolidated. The code was moved to kernel/irq/*, but the flags are still left per-arch. Right now, adding a new IRQ flag to the arch-specific header, like this patch does: http://cvs.sourceforge.net/viewcvs.py/*checkout*/alsa/alsa-driver/utils/patches/pcsp-kernel-2.6.10-03.diff?rev=1.1 no longer works, it breaks the compilation for all other arches, unless you add that flag to all the other arch-specific headers too. So I think such a clean-up makes sense. Signed-off-by: Stas Sergeev <stsp@aknet.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01[PATCH] remove all kernel BUGsMatt Mackall
This patch eliminates all kernel BUGs, trims about 35k off the typical kernel, and makes the system slightly faster. Signed-off-by: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-19[PATCH] freepgt: arch FIRST_USER_ADDRESS 0Hugh Dickins
Replace misleading definition of FIRST_USER_PGD_NR 0 by definition of FIRST_USER_ADDRESS 0 in all the MMU architectures beyond arm and arm26. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16[PATCH] mips: update VR41xx CPU-PCI bridge supportYoichi Yuasa
This patch updates NEC VR4100 series CPU-PCI bridge support. Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16[PATCH] mips: remove obsolete VR41xx RTC function from vr41xx.hYoichi Yuasa
This patch had removed obsolete VR41xx RTC function from vr41xx.h . I forgot to put this change in "update VR41xx RTC support". Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
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!