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2010-04-12MIPS: AR7: Fix phat finger of cpmac fixed_phy_addAlexander Clouter
Seems I trimmed one too many lines in 29ca2d81bd2a62fa86bc9a72ddadcf03d7daf795 (lmo) rsp 7084338eb8eb0cc021ba86c340157bad397f3f0b (kernel.org) which led to no functioning Ethernet on my WAG54Gv2. This patch restores the AWOL line. Signed-off-by: Alexander Clouter <alex@digriz.org.uk> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1065/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-12MIPS: AR7: Fix phat finger of reset bit in vlynq_high_dataAlexander Clouter
Seems in my whitespace cleanup 0f2536082d01448daeced8d9e82c3ba1751fefa3 (lmo) rsp. 8c2961da46abd85a71d20f2b169bf80618e (kernel.org) caused AR7 to no longer get as far as init. Fixed my phat fingering. Signed-off-by: Alexander Clouter <alex@digriz.org.uk> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1064/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-12MIPS: Loongson: Add module info to the loongson2_clock driverWu Zhangjin
This patch fixes a kernel warning when loading the the loongson2_clock driver: "Feb 25 23:42:27 localhost kernel: [ 4.965000] loongson2_clock: module license 'unspecified' taints kernel." Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Reported-by: Liu Shiwei <liushiwei@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1045/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-12MIPS: Lemote 2F: Ensure atomic execution of _rdmsr and _wrmsrWu Zhangjin
On Lemote 2F CS5536 MSRs are accessed through a index / data register pair. The access sequence must be protected by a spinlock to be atomic. Without this rebooting in fs2f_reboot() may fail. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org Cc: David Daney <ddaney@caviumnetworks.com> Patchwork: http://patchwork.linux-mips.org/patch/1058/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-12MIPS: Initialize an atomic_t properly with ATOMIC_INIT(0).Robert P. J. Day
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1008/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-12MIPS: Fix elfcore.c build warningRalf Baechle
kernel/elfcore.c includes <linux/elf.h> which includes the <asm/elf.h>. In <asm/elf.h>, struct pt_regs is declared inside the parameter list of the elf_dump_regs function which causes a kernel build warning. Fixed by adding a forward declaration of struct pt_regs. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-12MIPS: Octeon: Remove redundant declaration of octeon_reserve32_memoryYang Shi
octeon_reserve32_memory is defined In Octeon's setup.c, so remove the redundant extern declaration of this variable. Signed-off-by: Yang Shi <yang.shi@windriver.com> To: f.fainelli@gmail.com Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1022/ Acked-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-12MIPS: Trace: Don't trace irqsoff for the idle processWu Zhangjin
Like x86 did in arch/x86/kernel/{process_32.c,process_64.c}, also don't trace irqsoff for idle. If there's no useful work to be done, we don't care about the irqsoff duration. If we trace the idle process, the max duration of irqsoff will be the idle time and make the irqsoff tracer useless. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Patchwork: http://patchwork.linux-mips.org/patch/1044/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-12MIPS: delay: Fix use of current_cpu_data in preemptable code.Ralf Baechle
This may lead to warnings like: BUG: using smp_processor_id() in preemptible [00000000] code: reboot/1989 caller is __udelay+0x14/0x70 Call Trace: [<ffffffff8110ad28>] dump_stack+0x8/0x34 [<ffffffff812dde04>] debug_smp_processor_id+0xf4/0x110 [<ffffffff812d90bc>] __udelay+0x14/0x70 [<ffffffff81378274>] md_notify_reboot+0x12c/0x148 [<ffffffff81161054>] notifier_call_chain+0x64/0xc8 [<ffffffff811614dc>] __blocking_notifier_call_chain+0x64/0xc0 [<ffffffff8115566c>] kernel_restart_prepare+0x1c/0x38 [<ffffffff811556cc>] kernel_restart+0x14/0x50 [<ffffffff8115581c>] SyS_reboot+0x10c/0x1f0 [<ffffffff81103684>] handle_sysn32+0x44/0x84 Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-12MIPS: Octeon: Remove #if 0 code.David Daney
Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1029/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-12MIPS: Octeon: Remove vestiges of CONFIG_CAVIUM_RESERVE32_USE_WIRED_TLBDavid Daney
The config option CAVIUM_RESERVE32_USE_WIRED_TLB is not supported. Remove the dead code controlled by it. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1028/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-12MIPS: Cavium: Remove unused watchdog code.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-12MIPS: Fix build breakage if CONFIG_DEBUG_FS is enabled.Ralf Baechle
Caused by 38b7827fcdd660f591d645bd3ae6644456a4773c - no, cpu_local_* was not unused. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: Christoph Lameter <cl@linux-foundation.org> Acked-by: David Daney <ddaney@caviumnetworks.com>
2010-04-09[S390] Update default configuration.Martin Schwidefsky
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-09[S390] nss: add missing .previous statement to asm functionHeiko Carstens
The savesys_ipl_nss asm function is put into the .init.text section however it is missing a ".previous" section which would restore the previous section. Luckily all functions in early.c are init functions so it doesn't matter currently. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-09[S390] increase default size of vmalloc areaMartin Schwidefsky
The default size of the vmalloc area is currently 1 GB. The memory resource controller uses about 10 MB of vmalloc space per gigabyte of memory. That turns a system with more than ~100 GB memory unbootable with the default vmalloc size. It costs us nothing to increase the default size to some more adequate value, e.g. 128 GB. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-09[S390] s390: disable change bit overrideChristian Borntraeger
commit 6a985c6194017de2c062916ad1cd00dee0302c40 ([S390] s390: use change recording override for kernel mapping) deactivated the change bit recording for the kernel mapping to improve the performance. This works most of the time, but there are cases (e.g. kernel runs in home space, futex atomic compare xcmg) where we modify user memory with the kernel mapping instead of the user mapping. Instead of fixing these cases, this patch just deactivates change bit override to avoid future problems with other kernel code that might use the kernel mapping for user memory. CC: stable@kernel.org Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-09[S390] fix io_return critical section cleanupMartin Schwidefsky
If a machine check interrupts the io interrupt handler on one of the instructions between io_return and io_leave the critical section cleanup code will move the return psw to io_work_loop. By doing that the switch from the asynchronous interrupt stack to the process stack is skipped. If e.g. TIF_NEED_RESCHED is set things break because the scheduler is called with the asynchronous interrupts stack. Moving the psw back to io_return instead fixes the problem. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-09[S390] arch/s390/kernel: Add missing unlockJulia Lawall
In the default case the lock is not unlocked. The return is converted to a goto, to share the unlock at the end of the function. A simplified version of the semantic patch that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ expression E1; identifier f; @@ f (...) { <+... * spin_lock_irq (E1,...); ... when != E1 * return ...; ...+> } // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-04-07Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf, x86: Enable Nehalem-EX support perf kmem: Fix breakage introduced by 5a0e3ad slab.h script
2010-04-07Merge branch 'davinci-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci * 'davinci-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci: davinci: fix compile warning: <mach/da8xx.h>: #include <linux/platform_device.h> davinci: DM365: fix duplicate default IRQ priorities davinci: edma: clear events in edma_start() davinci: da8xx/omap-l1: fix build error when CONFIG_DAVINCI_MUX is undefined davinci: timers: don't enable timer until clocksource is initialized
2010-04-07Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip: x86: Fix double enable_IR_x2apic() call on SMP kernel on !SMP boards x86: Increase CONFIG_NODES_SHIFT max to 10 ibft, x86: Change reserve_ibft_region() to find_ibft_region() x86, hpet: Fix bug in RTC emulation x86, hpet: Erratum workaround for read after write of HPET comparator bootmem, x86: Fix 32bit numa system without RAM on node 0 nobootmem, x86: Fix 32bit numa system without RAM on node 0 x86: Handle overlapping mptables x86: Make e820_remove_range to handle all covered case x86-32, resume: do a global tlb flush in S4 resume
2010-04-07davinci: fix compile warning: <mach/da8xx.h>: #include <linux/platform_device.h>Sergei Shtylyov
This hushes the following warning: arch/arm/mach-davinci/include/mach/da8xx.h:104: warning: ‘struct platform_device’ declared inside parameter list arch/arm/mach-davinci/include/mach/da8xx.h:104: warning: its scope is only this definition or declaration, which is probably not what you want Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-04-07Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: Remove unused variable from ptrace microblaze: io.h: Add io big-endian function microblaze: Enable memory leak detector microblaze: Fix futex code microblaze: Fix ftrace_update_ftrace_func panic
2010-04-07frv: fix kernel/user segment handling in NOMMU modeDavid Howells
In NOMMU mode, the FRV segment handling is broken because KERNEL_DS == USER_DS. This causes tests of the following sort: /* don't pin down non-user-based iovecs */ if (segment_eq(get_fs(), KERNEL_DS)) return NULL; to malfunction. To fix this, make USER_DS the top of RAM instead of the top of the non-IO address space, and make KERNEL_DS one more than the top of the non-IO address space. Also get rid of FRV's __addr_ok() as nothing uses it. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-04-07microblaze: Remove unused variable from ptraceMichal Simek
Patch b3c1e01a09d6af2dd7811a066ffcfc5171be2bed should do it. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-07microblaze: io.h: Add io big-endian functionJohn Linn
Add new io big-endian function. They will be used for uartlite and spi driver. Signed-off-by: John Linn <john.linn@xilinx.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-07microblaze: Fix futex codeMichal Simek
Use logical and NOT for ANDN. It was likely type fault. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-07microblaze: Fix ftrace_update_ftrace_func panicSteven J. Magnani
The Microblaze dynamic ftrace code assumes a call ordering that is not met in all scenarios. Specifically, executing a command similar to: echo 105 > /sys/kernel/debug/tracing/set_ftrace_pid before any other tracing-related commands results in a kernel panic: BUG: failure at arch/microblaze/kernel/ftrace.c:198/ftrace_update_ftrace_func()! Recoding ftrace_update_ftrace_func() to use &ftrace_caller directly eliminates the need to capture its address elsewhere (and thus rely on a particular call sequence). Signed-off-by: Steven J. Magnani <steve@digidescorp.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-06perf, x86: Enable Nehalem-EX supportVince Weaver
According to Intel Software Devel Manual Volume 3B, the Nehalem-EX PMU is just like regular Nehalem (except for the uncore support, which is completely different). Signed-off-by: Vince Weaver <vweaver1@eecs.utk.edu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Lin Ming <ming.m.lin@intel.com> LKML-Reference: <alpine.DEB.2.00.1004060956580.1417@cl320.eecs.utk.edu> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-04-05davinci: DM365: fix duplicate default IRQ prioritiesKevin Hilman
IRQ 29 has two possible interrupts DDRINT and RTC, but having both in the default priority table is confusing (and triggers a warning from sparse.) This patch removes the lower priority DDRINT from the default priority table leaving the RTC setting as the default. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-04-05davinci: edma: clear events in edma_start()Brian Niebuhr
This patch fixes an issue where a DMA channel can erroneously process an event generated by a previous transfer. A failure case is where DMA is being used for SPI transmit and receive channels on OMAP L138. In this case there is a single bit that controls all event generation from the SPI peripheral. Therefore it is possible that between when edma_stop() has been called for the transmit channel on a previous transfer and edma_start() is called for the transmit channel on a subsequent transfer, that a transmit event has been generated. The fix is to clear events in edma_start(). This prevents false events from being processed when events are enabled for that channel. Signed-off-by: Brian Niebuhr <bniebuhr@efjohnson.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-04-05davinci: da8xx/omap-l1: fix build error when CONFIG_DAVINCI_MUX is undefinedSekhar Nori
The da8xx/omap-l1 boards refuse to build when CONFIG_DAVINCI_MUX is undefined because arch/arm/mach-davinci/mux.c:da8xx_pinmux_setup() is not defined. This patch fixes this issue. This is build tested with davinci_all_defconfig and da8xx_omapl_defconfig and boot tested on DA830 EVM. Reported-by: Shanmuga Sundaram Mahendran <shanmuga@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-04-05davinci: timers: don't enable timer until clocksource is initializedKevin Hilman
On da830, when the same timer is used for clocksource and clockevent, the timer can be started before the clockevent is registered/initialzed. This creates a window where a timer interrupt might fire before the clockevent handler has been setup and causes a crash. This patch moves the actual enable/start of the timer after the clockevent has ben registered. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-04-05Merge branch 'master' into export-slabhTejun Heo
2010-04-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sunxvr500: Ignore secondary output PCI devices. sparc64: Implement perf_arch_fetch_caller_regs sparc64: Update defconfig. sparc64: Fix array size reported by vmemmap_populate() sparc: Fix regset register window handling. drivers/serial/sunsu.c: Correct use after free
2010-04-04Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf: Always build the powerpc perf_arch_fetch_caller_regs version perf: Always build the stub perf_arch_fetch_caller_regs version perf, probe-finder: Build fix on Debian perf/scripts: Tuple was set from long in both branches in python_process_event() perf: Fix 'perf sched record' deadlock perf, x86: Fix callgraphs of 32-bit processes on 64-bit kernels perf, x86: Fix AMD hotplug & constraint initialization x86: Move notify_cpu_starting() callback to a later stage x86,kgdb: Always initialize the hw breakpoint attribute perf: Use hot regs with software sched switch/migrate events perf: Correctly align perf event tracing buffer
2010-04-03sparc64: Implement perf_arch_fetch_caller_regsDavid S. Miller
We provide regs->tstate, regs->tpc, regs->tnpc and regs->u_regs[UREG_FP]. regs->tstate is necessary for: user_mode() (via perf_exclude_event()) perf_misc_flags() (via perf_prepare_sample()) regs->tpc is necessary for: perf_instruction_pointer() (via perf_prepare_sample()) and regs->u_regs[UREG_FP] is necessary for: perf_callchain() (via perf_prepare_sample()) The regs->tnpc value is provided just to be tidy. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-03sparc64: Update defconfig.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-03Merge branch 'master' of /home/davem/src/GIT/linux-2.6/David S. Miller
2010-04-03sparc64: Fix array size reported by vmemmap_populate()Ben Hutchings
vmemmap_populate() attempts to report the used index and total size of vmemmap_table, but it wrongly shifts the total size so that it is always shown as 0. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-03perf: Always build the powerpc perf_arch_fetch_caller_regs versionFrederic Weisbecker
Now that software events use perf_arch_fetch_caller_regs() too, we need the powerpc version to be always built. Fixes the following build error: (.text+0x3210): undefined reference to `perf_arch_fetch_caller_regs' (.text+0x3324): undefined reference to `perf_arch_fetch_caller_regs' (.text+0x33bc): undefined reference to `perf_arch_fetch_caller_regs' (.text+0x33ec): undefined reference to `perf_arch_fetch_caller_regs' (.text+0xd4a0): undefined reference to `perf_arch_fetch_caller_regs' arch/powerpc/kernel/built-in.o:(.text+0xd528): more undefined references to `perf_arch_fetch_caller_regs' follow make[1]: *** [.tmp_vmlinux1] Error 1 make: *** [sub-make] Error 2 Reported-by: Michael Ellerman <michael@ellerman.id.au> Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org>
2010-04-02Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* master.kernel.org:/home/rmk/linux-2.6-arm: ARM: 5965/1: Fix soft lockup in at91 udc driver ARM: 6006/1: ARM: Use the correct NOP size in memmove for Thumb-2 kernel builds ARM: 6005/1: arm: kprobes: fix register corruption with jprobes ARM: 6003/1: removing compilation warning from pl061.h ARM: 6001/1: removing compilation warning comming from clkdev.h ARM: 6000/1: removing compilation warning comming from <asm/irq.h> ARM: 5999/1: Including device.h and resource.h header files in linux/amba/bus.h ARM: 5997/1: ARM: Correct the VFPv3 detection ARM: 5996/1: ARM: Change the mandatory barriers implementation (4/4) ARM: 5995/1: ARM: Add L2x0 outer_sync() support (3/4) ARM: 5994/1: ARM: Add outer_cache_fns.sync function pointer (2/4) ARM: 5993/1: ARM: Move the outer_cache definitions into a separate file (1/4)
2010-04-02Merge branch 'merge' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds
* 'merge' of git://git.secretlab.ca/git/linux-2.6: powerpc/5200: in lpbfifo, flag DMA irqs as enabled after requesting them powerpc/fsl: add device tree binding for QE firmware of/flattree: Fix unhandled OF_DT_NOP tag when unflattening the device tree
2010-04-02x86: Fix double enable_IR_x2apic() call on SMP kernel on !SMP boardsSuresh Siddha
Jan Grossmann reported kernel boot panic while booting SMP kernel on his system with a single core cpu. SMP kernels call enable_IR_x2apic() from native_smp_prepare_cpus() and on platforms where the kernel doesn't find SMP configuration we ended up again calling enable_IR_x2apic() from the APIC_init_uniprocessor() call in the smp_sanity_check(). Thus leading to kernel panic. Don't call enable_IR_x2apic() and default_setup_apic_routing() from APIC_init_uniprocessor() in CONFIG_SMP case. NOTE: this kind of non-idempotent and assymetric initialization sequence is rather fragile and unclean, we'll clean that up in v2.6.35. This is the minimal fix for v2.6.34. Reported-by: Jan.Grossmann@kielnet.net Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: <jbarnes@virtuousgeek.org> Cc: <david.woodhouse@intel.com> Cc: <weidong.han@intel.com> Cc: <youquan.song@intel.com> Cc: <Jan.Grossmann@kielnet.net> Cc: <stable@kernel.org> # [v2.6.32.x, v2.6.33.x] LKML-Reference: <1270083887.7835.78.camel@sbs-t61.sc.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-04-02perf, x86: Fix callgraphs of 32-bit processes on 64-bit kernelsTorok Edwin
When profiling a 32-bit process on a 64-bit kernel, callgraph tracing stopped after the first function, because it has seen a garbage memory address (tried to interpret the frame pointer, and return address as a 64-bit pointer). Fix this by using a struct stack_frame with 32-bit pointers when the TIF_IA32 flag is set. Note that TIF_IA32 flag must be used, and not is_compat_task(), because the latter is only set when the 32-bit process is executing a syscall, which may not always be the case (when tracing page fault events for example). Signed-off-by: Török Edwin <edwintorok@gmail.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Paul Mackerras <paulus@samba.org> Cc: x86@kernel.org Cc: linux-kernel@vger.kernel.org LKML-Reference: <1268820436-13145-1-git-send-email-edwintorok@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-04-02perf, x86: Fix AMD hotplug & constraint initializationPeter Zijlstra
Commit 3f6da39 ("perf: Rework and fix the arch CPU-hotplug hooks") moved the amd northbridge allocation from CPUS_ONLINE to CPUS_PREPARE_UP however amd_nb_id() doesn't work yet on prepare so it would simply bail basically reverting to a state where we do not properly track node wide constraints - causing weird perf results. Fix up the AMD NorthBridge initialization code by allocating from CPU_UP_PREPARE and installing it from CPU_STARTING once we have the proper nb_id. It also properly deals with the allocation failing. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> [ robustify using amd_has_nb() ] Signed-off-by: Stephane Eranian <eranian@google.com> LKML-Reference: <1269353485.5109.48.camel@twins> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-04-02x86: Move notify_cpu_starting() callback to a later stagePeter Zijlstra
Because we need to have cpu identification things done by the time we run CPU_STARTING notifiers. ( This init ordering will be relied on by the next fix. ) Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1269353485.5109.48.camel@twins> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-04-02Merge branch 'perf/urgent' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into perf/urgent
2010-04-02x86: Increase CONFIG_NODES_SHIFT max to 10David Rientjes
Some larger systems require more than 512 nodes, so increase the maximum CONFIG_NODES_SHIFT to 10 for a new max of 1024 nodes. This was tested with numa=fake=64M on systems with more than 64GB of RAM. A total of 1022 nodes were initialized. Successfully builds with no additional warnings on x86_64 allyesconfig. ( No effect on any existing config. Newly enabled CONFIG_MAXSMP=y will see the new default. ) Signed-off-by: David Rientjes <rientjes@google.com> LKML-Reference: <alpine.DEB.2.00.1003251538060.8589@chino.kir.corp.google.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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