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* [S390] sclp: introduce some new interfaces.Heiko Carstens2007-07-10
| | | | | | | | Introduce some new interfaces so that random subsystems don't have to mess around with sclp internal structures. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Fixed comment typo.Ralph Wuerthner2007-07-10
| | | | | Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* sched: x86, track TSC-unstable eventsIngo Molnar2007-07-09
| | | | | | | | track TSC-unstable events and propagate it to the scheduler code. Also allow sched_clock() to be used when the TSC is unstable, the rq_clock() wrapper creates a reliable clock out of it. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: zap the migration init / cache-hot balancing codeIngo Molnar2007-07-09
| | | | | | | | | | | | | | | | | | | | | | the SMP load-balancer uses the boot-time migration-cost estimation code to attempt to improve the quality of balancing. The reason for this code is that the discrete priority queues do not preserve the order of scheduling accurately, so the load-balancer skips tasks that were running on a CPU 'recently'. this code is fundamental fragile: the boot-time migration cost detector doesnt really work on systems that had large L3 caches, it caused boot delays on large systems and the whole cache-hot concept made the balancing code pretty undeterministic as well. (and hey, i wrote most of it, so i can say it out loud that it sucks ;-) under CFS the same purpose of cache affinity can be achieved without any special cache-hot special-case: tasks are sorted in the 'timeline' tree and the SMP balancer picks tasks from the left side of the tree, thus the most cache-cold task is balanced automatically. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Clean up E7520/7320/7525 quirk printk.Dave Jones2007-07-07
| | | | | | | | | | | | | | | The printk level in this printk is bogus, as the previous printk didn't have a terminating \n resulting in .. Intel E7520/7320/7525 detected.<6>Disabling irq balancing and affinity It also never printed a \n at all in the case where we didn't do the quirk. Change it to only make noise if it actually does something useful. Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* GEODE: reboot fixup for geode machines with CS5536 boardsAndres Salomon2007-07-06
| | | | | | | | | | | | Writing to MSR 0x51400017 forces a hard reset on CS5536-based machines, this has the reboot fixup do just that if such a board is detected. Acked-by: Jordan Crouse <jordan.crouse@amd.com> Signed-off-by: Andres Salomon <dilinger@debian.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds2007-07-06
|\ | | | | | | | | | | | | | | | | | | | | | | * 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] Fix scheduling latency issue on 24K, 34K and 74K cores [MIPS] Add macros to encode processor revisions. [MIPS] RM7000: Enable ICACHE_REFILLS_WORKAROUND_WAR. [MIPS] SMTC: Fix cut'n'paste bug in Kconfig.debug [MIPS] Change libgcc-style functions from lib-y to obj-y [MIPS] Fix timer/performance interrupt detection [MIPS] AP/SP: Avoid triggering the 34K E125 performance issue [MIPS] 64-bit TO_PHYS_MASK macro for RM9000 processors
| * [MIPS] Fix scheduling latency issue on 24K, 34K and 74K coresRalf Baechle2007-07-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The idle loop goes to sleep using the WAIT instruction if !need_resched(). This has is suffering from from a race condition that if if just after need_resched has returned 0 an interrupt might set TIF_NEED_RESCHED but we've just completed the test so go to sleep anyway. This would be trivial to fix by just disabling interrupts during that sequence as in: local_irq_disable(); if (!need_resched()) __asm__("wait"); local_irq_enable(); but the processor architecture leaves it undefined if a processor calling WAIT with interrupts disabled will ever restart its pipeline and indeed some processors have made use of the freedom provided by the architecture definition. This has been resolved and the Config7.WII bit indicates that the use of WAIT is safe on 24K, 24KE and 34K cores. It also is safe on 74K starting revision 2.1.0 so enable the use of WAIT with interrupts disabled for 74K based on a c0_prid of at least that. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * [MIPS] SMTC: Fix cut'n'paste bug in Kconfig.debugRalf Baechle2007-07-06
| | | | | | | | | | | | This effectivly turned the SMTC_IDLE_HOOK_DEBUG debug option into a no-op. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * [MIPS] Change libgcc-style functions from lib-y to obj-yRalf Baechle2007-07-06
| | | | | | | | | | | | | | | | | | Reported by Eugene Surovegin <ebs@ebshome.net>. If only modules were users of these functions they did not get linked into the kernel proper, so later module loads would fail as well. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * [MIPS] Fix timer/performance interrupt detectionChris Dearman2007-07-06
| | | | | | | | | | Signed-off-by: Chris Dearman <chris@mips.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * [MIPS] AP/SP: Avoid triggering the 34K E125 performance issueRalf Baechle2007-07-06
| | | | | | | | | | | | | | C0_status doesn't need to be initialized at this point anyway; the register will be initialized later. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | i386: es7000 build breakage fixVivek Goyal2007-07-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | o Commit 1833d6bc72893265f22addd79cf52e6987496e0f broke the build if compiled with CONFIG_ES7000=y and CONFIG_X86_GENERICARCH=n arch/i386/kernel/built-in.o(.init.text+0x4fa9): In function `acpi_parse_madt': : undefined reference to `acpi_madt_oem_check' arch/i386/kernel/built-in.o(.init.text+0x7406): In function `smp_read_mpc': : undefined reference to `mps_oem_check' arch/i386/kernel/built-in.o(.init.text+0x8990): In function `connect_bsp_APIC': : undefined reference to `enable_apic_mode' make: *** [.tmp_vmlinux1] Error 1 o Fix the build issue. Provided the definitions of missing functions. o Don't have ES7000 machine. Only compile tested. Cc: Len Brown <lenb@kernel.org> Cc: Natalie Protasevich <protasnb@gmail.com> Cc: Roland Dreier <rolandd@cisco.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | MTRR: Fix race causing set_mtrr to go into infinite loopLoic Prylli2007-07-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Processors synchronization in set_mtrr requires the .gate field to be set after .count field is properly initialized. Without an explicit barrier, the compiler was reordering those memory stores. That was sometimes causing a processor (in ipi_handler) to see the .gate change and decrement .count before the latter is set by set_mtrr() (which then hangs in a infinite loop with irqs disabled). Signed-off-by: Loic Prylli <loic@myri.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | i386: fix regression, endless loop in ptrace singlestep over an int80Jason Wessel2007-07-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The commit 635cf99a80f4ebee59d70eb64bb85ce829e4591f introduced a regression. Executing a ptrace single step after certain int80 accesses will infinitely loop and never advance the PC. The TIF_SINGLESTEP check should be done on the return from the syscall and not before it. I loops on each single step on the pop right after the int80 which writes out to the console. At that point you can issue as many single steps as you want and it will not advance any further. The test case is below: /* Test whether singlestep through an int80 syscall works. */ #define _GNU_SOURCE #include <stdio.h> #include <unistd.h> #include <fcntl.h> #include <sys/ptrace.h> #include <sys/wait.h> #include <sys/mman.h> #include <asm/user.h> #include <string.h> static int child, status; static struct user_regs_struct regs; static void do_child() { char str[80] = "child: int80 test\n"; ptrace(PTRACE_TRACEME, 0, 0, 0); kill(getpid(), SIGUSR1); write(fileno(stdout),str,strlen(str)); asm ("int $0x80" : : "a" (20)); /* getpid */ } static void do_parent() { unsigned long eip, expected = 0; again: waitpid(child, &status, 0); if (WIFEXITED(status) || WIFSIGNALED(status)) return; if (WIFSTOPPED(status)) { ptrace(PTRACE_GETREGS, child, 0, &regs); eip = regs.eip; if (expected) fprintf(stderr, "child stop @ %08lx, expected %08lx %s\n", eip, expected, eip == expected ? "" : " <== ERROR"); if (*(unsigned short *)eip == 0x80cd) { fprintf(stderr, "int 0x80 at %08x\n", (unsigned int)eip); expected = eip + 2; } else expected = 0; ptrace(PTRACE_SINGLESTEP, child, NULL, NULL); } goto again; } int main(int argc, char * const argv[]) { child = fork(); if (child) do_parent(); else do_child(); return 0; } Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: <stable@kernel.org> Cc: Chuck Ebbert <76306.1226@compuserve.com> Acked-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2007-07-05
|\ \ | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] always allow dump_stack() to produce a backtrace [ARM] Fix non-page aligned boot time mappings [ARM] 4458/1: pxa: Fix CKEN usage and hence fix pxa suspend/resume [ARM] 4454/1: Use word accesses in Versatile PCI config reads
| * | [ARM] always allow dump_stack() to produce a backtraceRussell King2007-07-05
| | | | | | | | | | | | | | | | | | | | | Don't make this dependent on CONFIG_DEBUG_KERNEL - if we hit a WARN_ON we need the stack trace to work out how we got to that point. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] Fix non-page aligned boot time mappingsRussell King2007-07-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | AT91SAM9260 stopped booting with the recent changes to MM initialisation - it was asking for a non-aligned virtual address which caused loops to be non-terminal. Fix this by rounding virtual addresses down, but remember to include the offset in the length, and round the length up to the following page. This means that asking for a mapping of 4K starting at 2K into a page maps two pages as one would expect. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 4458/1: pxa: Fix CKEN usage and hence fix pxa suspend/resumeRichard Purdie2007-07-02
| | | | | | | | | | | | | | | | | | | | | | | | The PXA CKEN changes broken syspend/resume on the pxa27x. This patch corrects the problem and fixes another couple of bad references. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 4454/1: Use word accesses in Versatile PCI config readsAndrzej Zaborowski2007-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ARM Versatile PCI config reads of one byte width have the lowest two bits of the address cleared and result in reading from a wrong place in the config space. This change is to use word size accesses like it is done for halfword reads. Byte reads are used for retrieving the IRQ number of a PCI device and the problem was not exposed until 2.6.20 because the value read was discarded in drivers/pci/setup-irq.c (recently fixed). Signed-off-by: Andrzej Zaborowski <andrew@openedhand.com> Acked-by: Paul Brook <paul@codesourcery.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | Merge branch 'merge' of ↵Linus Torvalds2007-07-05
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [POWERPC] Update defconfigs [POWERPC] Uninline and export virq_to_hw() for the pasemi_mac driver [POWERPC] Fix PMI breakage in cbe_cbufreq driver [POWERPC] Disable old EMAC driver in arch/powerpc
| * | [POWERPC] Update defconfigsKumar Gala2007-07-02
| | | | | | | | | | | | Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | [POWERPC] Uninline and export virq_to_hw() for the pasemi_mac driverOlof Johansson2007-07-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Uninline virq_to_hw and export it so modules can use it. The alternative would be to export the irq_map array instead, but it's an infrequently called function, and keeping the array unexported seems considerably cleaner. This is needed so that the pasemi_mac driver can be compiled as a module. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Fix PMI breakage in cbe_cbufreq driverChristian Krafft2007-07-01
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | The recent change to cell_defconfig to enable cpufreq on Cell exposed the fact that the cbe_cpufreq driver currently needs the PMI interface code to compile, but Kconfig doesn't make sure that the PMI interface code gets built if cbe_cpufreq is enabled. In fact cbe_cpufreq can work without PMI, so this ifdefs out the code that deals with PMI. This is a minimal solution for 2.6.22; a more comprehensive solution will be merged for 2.6.23. Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [MIPS] VSMP: Fix initialization ordering bug.Ralf Baechle2007-07-04
| | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | Remove some unused variablesLinus Torvalds2007-07-03
| | | | | | | | | | | | | | | | When Andi reverted the HPET resource reservation (in commit 0f8dc2f06560e2ca126d1670a24126ba08357d38), he didn't remove the now unused variables, which just causes gcc to be noisy. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Revert perfctr reservation to 2.6.21 stateAndi Kleen2007-07-03
| | | | | | | | | | | | | | | | | | | | With this change it works again when the nmi watchdog is disabled. Signed-off-by: Andi Kleen <ak@suse.de> Cc: Björn Steinbrink <B.Steinbrink@gmx.de> Cc: Stephane Eranian <eranian@hpl.hp.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Revert HPET resource reservationAndi Kleen2007-07-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Matthias Lenk reports that the PCI subsystem would move the HPET on SB400/SB600-based systems, where the HPET is in BAR1 of the SMbus controller. The reason? The ACPI layer registered the PCI MMIO range as being busy too early, before PCI enumeration had happened, causing the PCI layer to decide that it should relocate the resources somewhere else. Firmware resources should be marked busy _after_ the PCI enumeration and probing has happened, not before. Remove the too-early reservation, we'll fix it up to do it properly later. In the meantime, this solves the regression. Tested-by: Matthias Lenk <matthias.lenk@amd.com> Cc: Aaron Durbin <adurbin@google.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Blackfin arch: update board defconfig filesMike Frysinger2007-07-02
| | | | | | | | | | | | Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* | Blackfin arch: Fix up remaining printks with proper log levelsRobin Getz2007-06-25
| | | | | | | | | | | | Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* | Blackfin arch: Add proper -mcpu option according to the cpu and silicon ↵Jie Zhang2007-06-25
|/ | | | | | | | | | | | | | revision configuration Add silicon revision "any" and "none". Add proper -mcpu option according to the cpu and silicon revision configuration. Need update to use latest Blackfin cross compile toolchain. Signed-off-by: Jie Zhang <jie.zhang@analog.com> Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* PM: introduce set_target method in pm_opsRafael J. Wysocki2007-07-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 52ade9b3b97fd3bea42842a056fe0786c28d0555 changed the suspend code ordering to execute pm_ops->prepare() after the device model per-device .suspend() calls in order to fix some ACPI-related issues. Unfortunately, it broke the at91 platform which assumed that pm_ops->prepare() would be called before suspending devices. at91 used pm_ops->prepare() to get notified of the target system sleep state, so that it could use this information while suspending devices. However, with the current suspend code ordering pm_ops->prepare() is called too late for this purpose. Thus, at91 needs an additional method in 'struct pm_ops' that will be used for notifying the platform of the target system sleep state. Moreover, in the future such a method will also be needed by ACPI. This patch adds the .set_target() method to 'struct pm_ops' and makes the suspend code call it, if implemented, before executing the device model per-device .suspend() calls. It also modifies the at91 code to use pm_ops->set_target() instead of pm_ops->prepare(). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Pavel Machek <pavel@ucw.cz> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Len Brown <lenb@kernel.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* i386: mtrr crash fixAndrew Morton2007-07-01
| | | | | | | | | | | | Commit 3ebad5905609476a4ff1151a66b21d9794009961 ("[PATCH] x86: Save and restore the fixed-range MTRRs of the BSP when suspending") added mtrr operations without verifying that the CPU has MTRRs. Crashes transmeta CPUs. Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: <linux@horizon.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* i386: remove bogus mtrr range checkLinus Torvalds2007-07-01
| | | | | | | | | | | | | | | | | | | | | | | | | | Commit 9215da33209b861b01c51382254b178a3fe92a30 "fixed" the MTRR range check to not allow any MTRR's under the 1MB mark (since that's where the fixed MTRR's are active). However, that was totally bogus, since it's normal (and almost required) to have a large variable MTRR that starts at 0, and covers some large percentage of the whole RAM, and then using the fixed MTRR's to override that large MTRR to handle the special ISA hole in the 640k-1M region. The old check was bogus too (checking that no variable MTRR is used that is entirely under the 1MB range), but at least it wasn't actively detrimental, because no sane situation would ever trigger such MTRR usage in the first place. That said, the whole notion of not allowing variable MTRR's in the low 1MB is just stupid, so rather than revert the commit, this just removes the whole sad and unnecessary check entirely. Cc: Jan Beulich <jbeulich@novell.com> Cc: Andi Kleen <ak@suse.de> Cc: Andrew Morton <akpm@linux-foundation.org> Tested-by: Luca Palermo <darkmage@sabayonlinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'master' of ↵Linus Torvalds2007-06-30
|\ | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 * 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64]: Add linux/pagemap.h to asm/tlb.h [SPARC64]: Need to set state to IDLE during sun4v IRQ enable. [SPARC64]: Fix VIRQ enabling. [SPARC64]: Add irqs to mdesc_node.
| * [SPARC64]: Need to set state to IDLE during sun4v IRQ enable.David S. Miller2007-06-26
| | | | | | | | | | | | This fixes hypervisor console interrupts on LDOM guests. Signed-off-by: David S. Miller <davem@davemloft.net>
| * [SPARC64]: Fix VIRQ enabling.David S. Miller2007-06-26
| | | | | | | | | | | | | | We were doing the wrong call to turn them on, and also when enabling we need to forcefully set the state to IDLE. Signed-off-by: David S. Miller <davem@davemloft.net>
* | Fix VDSO gettimeofday() when called with NULL struct timeval.Will Schmidt2007-06-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The vdso64 portion of patch 74609f4536f2b8fd6a48381bbbe3cd37da20a527 for fixing problems with NULL gettimeofday input mistakenly checks for a null tz field twice, when it should be checking for null tz once, and null tv once; by way of a r10/r11 typo. Any application calling gettimeofday(&tv,NULL) will "fail". This corrects that typo, and makes my G5 happy. Tested on G5. Signed-off-by: Will Schmidt <will_schmidt@vnet.ibm.com> Cc: Tony Breeds <tony@bakeyournoodle.com> Forwarded-by: Ben Herrenschmidt <benh@kernel.crashing.org> [ Ben says: "I checked the 32 bits part of the change is correct. You can probably blame me for originally writing the 2 versions with inversed usage of r10 and r11, thus confusing Tony :-)" Ben duly blamed. - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Introduce fixed sys_sync_file_range2() syscall, implement on PowerPC and ARMDavid Woodhouse2007-06-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Not all the world is an i386. Many architectures need 64-bit arguments to be aligned in suitable pairs of registers, and the original sys_sync_file_range(int, loff_t, loff_t, int) was therefore wasting an argument register for padding after the first integer. Since we don't normally have more than 6 arguments for system calls, that left no room for the final argument on some architectures. Fix this by introducing sys_sync_file_range2(int, int, loff_t, loff_t) which all fits nicely. In fact, ARM already had that, but called it sys_arm_sync_file_range. Move it to fs/sync.c and rename it, then implement the needed compatibility routine. And stop the missing syscall check from bitching about the absence of sys_sync_file_range() if we've implemented sys_sync_file_range2() instead. Tested on PPC32 and with 32-bit and 64-bit userspace on PPC64. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | mips-jazz: correct flags for timer io resourceAlexey Dobriyan2007-06-28
| | | | | | | | | | | | | | | | | | arch/mips/jazz/setup.c:55:4: error: Initializer entry defined twice Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | mtrr/cyrix: fix sectionsRandy Dunlap2007-06-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | main.c::mtrr_add() or mtrr_del() [exported] calls main.c::mtrr_add_page() or mtrr_del_page() or mtrr_restore() [resume] calls main.c::set_mtrr() calls main.c::ipi_handler() calls main.c::mtrr_if->set_all() == which can be cyrix_set_all WARNING: arch/i386/kernel/built-in.o(.text+0x8657): Section mismatch: reference to .init.data: (between 'cyrix_set_all' and 'centaur_get_free_region') WARNING: arch/i386/kernel/built-in.o(.text+0x866b): Section mismatch: reference to .init.data: (between 'cyrix_set_all' and 'centaur_get_free_region') WARNING: arch/i386/kernel/built-in.o(.text+0x867e): Section mismatch: reference to .init.data: (between 'cyrix_set_all' and 'centaur_get_free_region') WARNING: arch/i386/kernel/built-in.o(.text+0x8684): Section mismatch: reference to .init.data: (between 'cyrix_set_all' and 'centaur_get_free_region') WARNING: arch/i386/kernel/built-in.o(.text+0x868a): Section mismatch: reference to .init.data: (between 'cyrix_set_all' and 'centaur_get_free_region') Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'release' of ↵Linus Torvalds2007-06-27
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Make SN2 PCI code use ioremap rather than manually mangle the address [IA64] Force error to surface in nofault code [IA64] change sh_change_coherence oemcall to use nolock [IA64] remove duplicate header include line [IA64] Correct unwind validation code [IA64] is_power_of_2-ia64/mm/hugetlbpage.c
| * | [IA64] Make SN2 PCI code use ioremap rather than manually mangle the addressJes Sorensen2007-06-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This one changes the SN2 specific PCI drivers to use ioremap() for obtaining the real address to access for the PCI registers instead of manually calculating them with __IA64_UNCACHED_OFFSET. The patch should have no real change when running on a normal Linux kernel, but when running as a paravirtualized it is needed. Signed-off-by: Jes Sorenson <jes@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] Force error to surface in nofault codeRuss Anderson2007-06-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Montecito behaves slightly differently than previous processors, resulting in the MCA due to a failed PIO read to sometimes surfacing outside the nofault code. Adding an additional or and stop bits ensures the MCA surfaces in the nofault code. Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] remove duplicate header include lineMUNEDA Takahiro2007-06-26
| | | | | | | | | | | | | | | | | | | | | Remove duplicate header include line from arch/ia64/kernel/time.c. Signed-off-by: MUNEDA Takahiro <muneda.takahiro@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] Correct unwind validation codeKeith Owens2007-06-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Both rp_loc and pfs_loc can be in the register stack area _or_ they can be in the memory stack area, the latter occurs when a struct pt_regs is pushed. Correct the validation check on these fields to check for both stack areas. Not allowing for memory stack locations means no backtrace past ia64_leave_kernel, or any other code that uses PT_REGS_UNWIND_INFO. Signed-off-by: Keith Owens <kaos@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] is_power_of_2-ia64/mm/hugetlbpage.cvignesh babu2007-06-26
| |/ | | | | | | | | | | | | | | Replacing (n & (n-1)) in the context of power of 2 checks with is_power_of_2 Signed-off-by: vignesh babu <vignesh.babu@wipro.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | x86_64 irq: use mask/unmask and proper locking in fixup_irqs()Siddha, Suresh B2007-06-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Force irq migration path during cpu offline, is not using proper locks and irq_chip mask/unmask routines. This will result in some races(especially the device generating the interrupt can see some inconsistent state, resulting in issues like stuck irq,..). Appended patch fixes the issue by taking proper lock and encapsulating irq_chip set_affinity() with a mask() before and an unmask() after. This fixes a MSI irq stuck issue reported by Darrick Wong. There are several more general bugs in this area(irq migration in the process context). For example, 1. Possibility of missing edge triggered irq. 2. Reliable method of migrating level triggered irq in the process context. We plan to look and close these in the near future. Eric says: In addition even with the fix from Suresh there is still at least one nasty hardware race in fixup_irqs(). However we exercise that code path rarely enough that we are unlikely to hit it in the real world, and that race seems to have existed since the code was merged. And a fix for that is not coming soon as it is an open investigation area if we can fix irq migration to work outside of irq context or if we have to rework the requirements imposed by the generic cpu hotplug and layer on fixup_irqs(). So this may come up again. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Reported-and-tested-by: Darrick Wong <djwong@us.ibm.com> Cc: Andi Kleen <ak@suse.de> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | x86_64: set the irq_chip name for lapicSuresh Siddha2007-06-26
| | | | | | | | | | | | | | set the irq_chip name for lapic. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2007-06-26
|\ \ | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 4449/1: more entries in arch/arm/boot/.gitignore [ARM] 4452/1: Force the literal pool dump before reloc_end [ARM] Update show_regs/oops register format [ARM] Add support for pause_on_oops and display preempt/smp options
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