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2006-10-21[MIPS] Fix aliasing bug in copy_to_user_page / copy_from_user_pageRalf Baechle3-10/+175
The current implementation uses a sequence of a cacheflush and a copy. This is racy in case of a multithreaded debuggee and renders GDB virtually unusable. Aside this fixes a performance hog rendering access to /proc/cmdline very slow and resulting in a enough cache stalls for the 34K AP/SP programming model to make the bare metal code on the non-Linux VPE miss RT deadlines. The main part of this patch was originally written by Ralf Baechle; Atushi Nemoto did the the debugging. Signed-off-by: Atsushi Nemoto <[email protected]> Signed-off-by: Ralf Baechle <[email protected]>
2006-10-21[MIPS] Cleanup remaining references to mips_counter_frequency.Ralf Baechle2-2/+2
Noticed by Samium Gromoff but his patch got stale in flight ... Signed-off-by: Ralf Baechle <[email protected]>
2006-10-19[MIPS] Fix iounmap argument to const volatile.Ralf Baechle1-1/+1
With the existing prototype the following code: const void __iomem *io = ioremap(); x = readb(io); iounmap(io); did result in a warning. Signed-off-by: Ralf Baechle <[email protected]>
2006-10-19[MIPS] Reserve syscall numbers for kexec_load.Ralf Baechle4-1/+5
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-19[MIPS] Update tb0287_defconfigYoichi Yuasa1-83/+99
Signed-off-by: Yoichi Yuasa <[email protected]> Signed-off-by: Ralf Baechle <[email protected]>
2006-10-19[MIPS] Update pnx8550-v2pci_defconfigYoichi Yuasa1-59/+382
In the current pnx8550-v2pci_defconfig CONFIG_SGI_IP22 has been selected. Signed-off-by: Yoichi Yuasa <[email protected]> Signed-off-by: Ralf Baechle <[email protected]>
2006-10-19[MIPS] Update pnx8500-jbs_defconfigYoichi Yuasa1-54/+330
In the current pnx8550-jbs_defconfig CONFIG_SGI_IP22 has been selected. Signed-off-by: Yoichi Yuasa <[email protected]> Signed-off-by: Ralf Baechle <[email protected]>
2006-10-19[MIPS] save_context_stack fixAtsushi Nemoto1-1/+1
CONFIG_KALLSYMS=n case is obviously wrong, though it is harmless since CONFIG_KALLSYMS is always enabled with CONFIG_STACKTRACE for now. Signed-off-by: Atsushi Nemoto <[email protected]> Signed-off-by: Ralf Baechle <[email protected]>
2006-10-19[MIPS] Use compat_sys_mount.Ralf Baechle2-2/+2
This fixes mount problems with smbfs, ncpfs and NFSv4. Signed-off-by: Ralf Baechle <[email protected]>
2006-10-19[MIPS] Fix O32 personality(2) call with 0xffffffff argument.Thiemo Seufer1-1/+3
A sign extension bug did result in sys_personality being invoked with a 0xffffffffffffffffUL argument, so querying the current personality didn't work. Signed-off-by: Thiemo Seufer <[email protected]> Signed-off-by: Ralf Baechle <[email protected]>
2006-10-19[MIPS] A few more pt_regs fixups.Ralf Baechle5-7/+6
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-19[MIPS] Malta: Fix uninitialized regs pointer.Ralf Baechle1-1/+2
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-19[MIPS] Delete unneeded pt_regs forward declaration.Ralf Baechle1-2/+0
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-19[MIPS] Use kallsyms_lookup_size_offset() instead of kallsyms_lookup()Franck Bui-Huu1-6/+2
This new routine doesn't lookup for symbol names. So we needn't to pass any char buffers or pointer since we don't care about names. Signed-off-by: Franck Bui-Huu <[email protected]> Signed-off-by: Ralf Baechle <[email protected]>
2006-10-11[MIPS] Pass NULL not 0 for pointer value.Ralf Baechle1-1/+1
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-11[MIPS] IP27: Make declaration of setup_replication_mask a proper prototype.Ralf Baechle1-1/+1
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-11[MIPS] BigSur: More useful defconfig.Ralf Baechle1-21/+81
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-11[MIPS] Fix compilation warnings in arch/mips/sibyte/bcm1480/smp.cMark Mason1-3/+3
Signed-off-by: Mark Mason <[email protected]> Signed-off-by: Ralf Baechle <[email protected]>
2006-10-11[MIPS] Workaround for bug in gcc -EB / -EL options.Ralf Baechle1-2/+11
Certain gcc versions upto gcc 4.1.1 (probably 4.2-subversion as of 2006-10-10 don't properly change the the predefined symbols if -EB / -EL are used, so we kludge that here. A bug has been filed at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413. Signed-off-by: Ralf Baechle <[email protected]>
2006-10-11[MIPS] Fix timer setup for JazzYoichi Yuasa1-1/+1
Signed-off-by: Yoichi Yuasa <[email protected]> Signed-off-by: Ralf Baechle <[email protected]>
2006-10-09[MIPS] Make sure cpu_has_fpu is used only in atomic contextAtsushi Nemoto6-22/+26
Make sure cpu_has_fpu (which uses smp_processor_id()) is used only in atomic context. Signed-off-by: Atsushi Nemoto <[email protected]> Signed-off-by: Ralf Baechle <[email protected]>
2006-10-09[MIPS] Fix build errors related to wbflush.h on tx4927/tx4938.Atsushi Nemoto5-29/+3
TX49 CPUs have a SYNC instruction so that CONFIG_CPU_HAS_WB is no longer needed. Signed-off-by: Atsushi Nemoto <[email protected]> Signed-off-by: Ralf Baechle <[email protected]>
2006-10-09[MIPS] Alchemy: nuke usbdev; it's useless as is ...Ralf Baechle10-1589/+9
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-09[MIPS] Malta: Fix build for non-MIPS32/64 configuration.Ralf Baechle1-6/+6
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-09[MIPS] NUMA: Register all nodes before cpus or sysfs will barf.Ralf Baechle1-5/+9
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-09[MIPS] ret_from_irq adjustmentAtsushi Nemoto4-23/+19
Make sure that RA on top of interrupt stack is an address of ret_from_irq, so that dump_stack etc. can trace info interrupted context. Also this patch fixes except_vec_vi_handler and __smtc_ipi_vector which seems broken. Signed-off-by: Atsushi Nemoto <[email protected]> Signed-off-by: Ralf Baechle <[email protected]>
2006-10-09[MIPS] Fix RM9000 wait instruction detection.Ralf Baechle1-1/+8
Only revisions < 4.0 don't have a functional wait instruction. From Thomas Koeller ([email protected]). Signed-off-by: Ralf Baechle <[email protected]>
2006-10-09IRQ: Use the new typedef for interrupt handler function pointersDavid Howells3-3/+3
Use the new typedef for interrupt handler function pointers rather than actually spelling out the full thing each time. This was scripted with the following small shell script: #!/bin/sh egrep -nHrl -e 'irqreturn_t[ ]*[(][*]' $* | while read i do echo $i perl -pi -e 's/irqreturn_t\s*[(]\s*[*]\s*([_a-zA-Z0-9]*)\s*[)]\s*[(]\s*int\s*,\s*void\s*[*]\s*[)]/irq_handler_t \1/g' $i || exit $? done Signed-Off-By: David Howells <[email protected]>
2006-10-09[MIPS] Cleanup unnecessary <asm/ptrace.h> inclusions.Ralf Baechle29-33/+6
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-09[MIPS] DEC: pt_regs fixes for buserror handlersRalf Baechle3-5/+10
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-09[MIPS] Fix return type of gt64120_irq.Ralf Baechle1-1/+3
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-09[MIPS] Ocelot C: Build fix - ll_mv64340_irq takes no more regs argument.Ralf Baechle1-1/+1
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-09[MIPS] Jazz defconfig file.Ralf Baechle1-0/+1404
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-09[MIPS] Jazz: build fix - include <linux/screen_info.h>Ralf Baechle1-0/+1
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-09[MIPS] Jazz: Remove warning. After 7 years probably somebody test this ;)Ralf Baechle1-2/+0
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-09[MIPS] Jazz: Fix I/O port resources.Ralf Baechle1-4/+21
struct resource members were shuffeled a while ago. Signed-off-by: Ralf Baechle <[email protected]>
2006-10-09[MIPS] DEC: pt_regs fixes for dec_intr_halt.Ralf Baechle2-2/+2
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-08[MIPS] Complete fixes after removal of pt_regs argument to int handlers.Ralf Baechle71-610/+529
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-08[MIPS] Show actual CPU information in /proc/cpuinfoKarl-Johan Karlsson1-5/+5
Currently, /proc/cpuinfo contains several copies of the information for whatever processor we happen to be scheduled on. This patch makes it contain the proper information for each CPU, which is particularly useful on mixed R12k/R10k IP27 machines. Signed-off-by: Karl-Johan Karlsson <[email protected]> Signed-off-by: Ralf Baechle <[email protected]>
2006-10-08[MIPS] Cobalt: Time runs too quicklyScott Ashcroft1-2/+2
A kernel built with HZ==250 runs about 4 four times too quickly on a Cobalt RaQ2. Signed-off-by: Scott Ashcroft <[email protected]> Signed-off-by: Ralf Baechle <[email protected]>
2006-10-08[MIPS] Update Malta config.Ralf Baechle2-33/+85
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-05IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells4-13/+21
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <[email protected]> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-04[MIPS] PNX8550 fixupsVitaly Wool5-18/+12
This patch fixes the compilation errors on PNX8550 and hard-to-track bug in interrupt handling. It also corresponds to the latest changes in PNX8550 serial driver. Signed-off-by: Vitaly Wool <[email protected]> Signed-off-by: Ralf Baechle <[email protected]>
2006-10-03Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivialLinus Torvalds4-4/+4
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (39 commits) Add missing maintainer countries in CREDITS Fix bytes <-> kilobytes typo in Kconfig for ramdisk fix a typo in Documentation/pi-futex.txt BUG_ON conversion for fs/xfs/ BUG_ON() conversion in fs/nfsd/ BUG_ON conversion for fs/reiserfs BUG_ON cleanups in arch/i386 BUG_ON cleanup in drivers/net/tokenring/ BUG_ON cleanup for drivers/md/ kerneldoc-typo in led-class.c debugfs: spelling fix rcutorture: Fix incorrect description of default for nreaders parameter parport: Remove space in function calls Michal Wronski: update contact info Spelling fix: "control" instead of "cotrol" reboot parameter in Documentation/kernel-parameters.txt Fix copy&waste bug in comment in scripts/kernel-doc remove duplicate "until" from kernel/workqueue.c ite_gpio fix tabbage fix file specification in comments ... Fixed trivial path conflicts due to removed files: arch/mips/dec/boot/decstation.c, drivers/char/ite_gpio.c
2006-10-03fix file specification in commentsUwe Zeisberger4-4/+4
Many files include the filename at the beginning, serveral used a wrong one. Signed-off-by: Uwe Zeisberger <[email protected]> Signed-off-by: Adrian Bunk <[email protected]>
2006-10-03Attack of "the the"s in archMatt LaPlante1-1/+1
The patch below corrects multiple occurances of "the the" typos across several files, both in source comments and KConfig files. There is no actual code changed, only text. Note this only affects the /arch directory, and I believe I could find many more elsewhere. :) Signed-off-by: Adrian Bunk <[email protected]>
2006-10-03[MIPS] Fix wreckage after removal of tickadj; convert to GENERIC_TIME.Ralf Baechle3-76/+4
Signed-off-by: Ralf Baechle <[email protected]>
2006-10-03[MIPS] DECstation defconfig updateMaciej W. Rozycki1-73/+73
Sanitise a number of settings for the DECstation. Signed-off-by: Maciej W. Rozycki <[email protected]> Signed-off-by: Ralf Baechle <[email protected]>
2006-10-03[MIPS] Fix size of zones_size and zholes_size arrayAtsushi Nemoto1-2/+2
Commit f06a96844a577c43249fce25809a4fae07407f46 broke MIPS. Signed-off-by: Atsushi Nemoto <[email protected]> Signed-off-by: Ralf Baechle <[email protected]>
2006-10-03[MIPS] BCM1480: Mask pending interrupts against c0_status.im.Ralf Baechle1-1/+1
Signed-off-by: Ralf Baechle <[email protected]>
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