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* all-archs: consolidate .data section definition in asm-genericSam Ravnborg2007-05-19
| | | | | | | With this consolidation we can now modify the .data section definition in one spot for all archs. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* all-archs: consolidate .text section definition in asm-genericSam Ravnborg2007-05-19
| | | | | | Move definition of .text section to asm-generic. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* [MIPS] Drop __devinit tag from allocate_irqno() and free_irqno()Atsushi Nemoto2007-05-11
| | | | | | | | | | This fix these warnings: WARNING: arch/mips/kernel/built-in.o - Section mismatch: reference to .init.text:free_irqno from __ksymtab_gpl between '__ksymtab_free_irqno' (at offset 0x0) and '__ksymtab_allocate_irqno' WARNING: arch/mips/kernel/built-in.o - Section mismatch: reference to .init.text:allocate_irqno from __ksymtab_gpl after '__ksymtab_allocate_irqno' (at offset 0x8) Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] clocksource: use CLOCKSOURCE_MASK() macroFranck Bui-Huu2007-05-11
| | | | | Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] MT: Reenable EIC support and add support for SOCit SC.Chris Dearman2007-05-11
| | | | | Signed-off-by: Chris Dearman <chris@mips.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Define and use vi_handler_t for vectored interrupt handlers.Ralf Baechle2007-05-11
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Fix do_default_vi to use get_irq_regs to get the irq register ptr.Ralf Baechle2007-05-11
| | | | | | | Harmless bug because this function is only called in case of another kernel bug anyway which is also why this was missed for so long. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Make do_default_vi staticRalf Baechle2007-05-11
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] early_printk: allow the early console to run earlierFranck Bui-Huu2007-05-11
| | | | | Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] early_printk: use init sectionFranck Bui-Huu2007-05-11
| | | | | Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* rename thread_info to stackRoman Zippel2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This finally renames the thread_info field in task structure to stack, so that the assumptions about this field are gone and archs have more freedom about placing the thread_info structure. Nonbroken archs which have a proper thread pointer can do the access to both current thread and task structure via a single pointer. It'll allow for a few more cleanups of the fork code, from which e.g. ia64 could benefit. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> [akpm@linux-foundation.org: build fix] Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ian Molton <spyro@f2s.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Mikael Starvik <starvik@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Richard Curnow <rc@rc0.org.uk> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp> Cc: Andi Kleen <ak@muc.de> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* wrap access to thread_infoRoman Zippel2007-05-09
| | | | | | | | | 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>
* header cleaning: don't include smp_lock.h when not usedRandy Dunlap2007-05-08
| | | | | | | | | | | | 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>
* Fixes and cleanups for earlyprintk aka boot consoleGerd Hoffmann2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The console subsystem already has an idea of a boot console, using the CON_BOOT flag. The implementation has some flaws though. The major problem is that presence of a boot console makes register_console() ignore any other console devices (unless explicitly specified on the kernel command line). This patch fixes the console selection code to *not* consider a boot console a full-featured one, so the first non-boot console registering will become the default console instead. This way the unregister call for the boot console in the register_console() function actually triggers and the handover from the boot console to the real console device works smoothly. Added a printk for the handover, so you know which console device the output goes to when the boot console stops printing messages. The disable_early_printk() call is obsolete with that patch, explicitly disabling the early console isn't needed any more as it works automagically with that patch. I've walked through the tree, dropped all disable_early_printk() instances found below arch/ and tagged the consoles with CON_BOOT if needed. The code is tested on x86, sh (thanks to Paul) and mips (thanks to Ralf). Changes to last version: Rediffed against -rc3, adapted to mips cleanups by Ralf, fixed "udbg-immortal" cmd line arg on powerpc. Signed-off-by: Gerd Hoffmann <kraxel@exsuse.de> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Ralf Baechle <ralf@linux-mips.org> Cc: Andi Kleen <ak@suse.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* simplify the stacktrace codeChristoph Hellwig2007-05-08
| | | | | | | | | | | | | | | | | | | Simplify the stacktrace code: - remove the unused task argument to save_stack_trace, it's always current - remove the all_contexts flag, it's alwasy 0 Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Andi Kleen <ak@suse.de> Cc: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] x86: Allow percpu variables to be page-alignedJeremy Fitzhardinge2007-05-02
| | | | | | | | | | | | | | | Let's allow page-alignment in general for per-cpu data (wanted by Xen, and Ingo suggested KVM as well). Because larger alignments can use more room, we increase the max per-cpu memory to 64k rather than 32k: it's getting a little tight. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Andi Kleen <ak@suse.de> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
* [MIPS] Remove unused _THREAD_SIZE_ORDER from asm-offset.c.Ralf Baechle2007-04-27
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Register PCI host bridge resource earlierThomas Bogendoerfer2007-04-27
| | | | | | | | | | | | | | | PCI based SNI RM machines have their EISA bus behind an Intel PCI/EISA bridge. So the PCI IO range must start at 0x0000. Changing that will break the PCI bus, because i8259.c already has registered it's IO addresses before the PCI bus gets initialized. Below is a patch, which will register the PCI host bridge resources inside register_pci_controller(). It also changes i8259.c to use insert_region(), because request_resource() will fail, if the IO space of the PIT hanging of the PCI host bridge (maybe passing the resource parent to init_i8259_irqs() is a cleaner fix for that). Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Fix AP/SP to work in the reality of modern kernels.Ralf Baechle2007-04-27
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Fix BUG(), BUG_ON() handlingAtsushi Nemoto2007-04-20
| | | | | | | | | | With commit 63dc68a8cf60cb110b147dab1704d990808b39e2, kernel can not handle BUG() and BUG_ON() properly since get_user() returns false for kernel code. Use __get_user() to skip unnecessary access_ok(). This patch also make BRK_BUG code encoded in the TNE instruction. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Retry {save,restore}_fp_context if failed in atomic context.Atsushi Nemoto2007-04-20
| | | | | | | | | | | | | | | The save_fp_context()/restore_fp_context() might sleep on accessing user stack and therefore might lose FPU ownership in middle of them. If these function failed due to "in_atomic" test in do_page_fault, touch the sigcontext area in non-atomic context and retry these save/restore operation. This is a replacement of a (broken) fix which was titled "Allow CpU exception in kernel partially". Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Disallow CpU exception in kernel again.Atsushi Nemoto2007-04-20
| | | | | | | | | The commit 4d40bff7110e9e1a97ff8c01bdd6350e9867cc10 ("Allow CpU exception in kernel partially") was broken. The commit was to fix theoretical problem but broke usual case. Revert it for now. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] SMTC: Fix recursion in instant IPI replay code.Ralf Baechle2007-03-29
| | | | | | | | | | | | local_irq_restore -> raw_local_irq_restore -> irq_restore_epilog -> smtc_ipi_replay -> smtc_ipi_dq -> spin_unlock_irqrestore -> _spin_unlock_irqrestore -> local_irq_restore The recursion does abort when there is no more IPI queued for a CPU, so this isn't usually fatal which is why we got away with this for so long until this was discovered by code inspection. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] SMTC: Fix false trigger of debug code on single VPE.Ralf Baechle2007-03-29
| | | | | | | | Make smtc_setup_irq() update the list of interrupts which need to be watched by the debug code itself. Also there is no need to initialize the IPI swint when running with a single VPE, so don't initialize it. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] SMTC: irq_{enter,leave} and kstats keeping for relayed timer ints.Ralf Baechle2007-03-29
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] lockdep: Deal with interrupt disable hazard in TRACE_IRQFLAGSChris Dearman2007-03-29
| | | | | | | | | | | Between the mtc0 or di instruction that disables interrupts and the following hazard barrier a processor may still take interrupts. If an interrupt is taken after interrupts are disabled but before the state is updated it will appear to restore_all that it is incorrectly returning with interrupts disabled. Signed-off-by: Chris Dearman <chris@mips.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] lockdep: Handle interrupts in R3000 style c0_status register.Chris Dearman2007-03-29
| | | | | | | | Check the IEP bit for R3000 style processors when checking to see if interrupts will be reenabled in restore_all. Signed-off-by: Chris Dearman <chris@mips.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Export except_vec_vi_{mori,lui,ori} as text symbols.Ralf Baechle2007-03-19
| | | | | | Otherwise objdump will screw up disassembly. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] VI: TRACE_IRQS_OFF clobbers $v0, so save & restore around call.Ralf Baechle2007-03-19
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] RTLX: Handle copy_*_user return values.Ralf Baechle2007-03-16
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] RTLX: Protect rtlx_{read,write} with mutex.Ralf Baechle2007-03-16
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] RTLX: Harden against compiler reordering and optimization.Ralf Baechle2007-03-16
| | | | | | | | | | | RTLX communication is based on lock-free shared memory buffers. It happened to be working by luck so far but relies on the optimizer doing certain optimizations but no reordering. Fixed by inserting proper barriers in rtlx_read and rtlx_write, and careful pointer dereferencing. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] RTLX: Don't use volatile; it's fragile.Ralf Baechle2007-03-16
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Compat: Fix build if CONFIG_SYSVIPC is disabled.Ralf Baechle2007-03-16
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] FPU ownership management & preemption fixesAtsushi Nemoto2007-03-16
| | | | | Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Check FCSR for pending interrupts, alternative versionAtsushi Nemoto2007-03-16
| | | | | | | | | | | Commit 6d6671066a311703bca1b91645bb1e04cc983387 is incomplete and misses non-r4k CPUs. This patch reverts the commit and fixes in other way. o Do FCSR checking in caller of restore_fp_context. o Send SIGFPE if the signal handler set any FPU exception bits. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] kspd: ioctl needs a translation entry.Ralf Baechle2007-03-13
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [PATCH] Add epoll compat_ code to fs/compat.cDavide Libenzi2007-03-08
| | | | | | | | | | | | | | | | | | | | | | | | IA64 and ARM-OABI are currently using their own version of epoll compat_ code. An architecture needs epoll_event translation if alignof(u64) in 32 bit mode is different from alignof(u64) in 64 bit mode. If an architecture needs epoll_event translation, it must define struct compat_epoll_event in asm/compat.h and set CONFIG_HAVE_COMPAT_EPOLL_EVENT and use compat_sys_epoll_ctl and compat_sys_epoll_wait. All 64 bit architecture should use compat_sys_epoll_pwait. [sfr: restructure and move to fs/compat.c, remove MIPS version of compat_sys_epoll_pwait, use __put_user_unaligned] Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Russell King <rmk@arm.linux.org.uk> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [MIPS] Wire up ioprio_set and ioprio_get.Ralf Baechle2007-03-06
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Export __copy_user_inatomic.Ralf Baechle2007-03-06
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Fix and cleanup the mess that a dozen prom_printf variants are.Ralf Baechle2007-03-04
| | | | | | early_printk is a so much saner thing. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Replace sys32_timer_create with the generic compat_sys_timer_create.Ralf Baechle2007-03-04
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Replace sys32_socketcall with the generic compat_sys_socketcall.Ralf Baechle2007-03-04
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] N32 waitid is the same as o32.Ralf Baechle2007-03-04
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Make SMTC_IDLE_HOOK_DEBUG a proper option in Kconfig.debug.Ralf Baechle2007-02-26
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Fix foobar in wiring up compat_sys_epoll_pwait syscall.Ralf Baechle2007-02-26
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Always fixup unaligned accesses in kernel mode.Ralf Baechle2007-02-26
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] RTLX: Delete multiple definition of ret shaddowing each other.Ralf Baechle2007-02-26
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] RTLX, VPE: Make open actually atomic.Ralf Baechle2007-02-26
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Kill redundant EXTRA_AFLAGSAtsushi Nemoto2007-02-26
| | | | | | | | | | Many Makefiles in arch/mips have EXTRA_AFLAGS := $(CFLAGS) line. This is redundant while AFLAGS contains $(cflags-y) and any options only listed in CFLAGS (not in cflags-y) should be unnecessary for asm sources. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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