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2009-03-13tracing/syscalls: support for syscalls tracing on x86Frederic Weisbecker
Extend x86 architecture syscall tracing support with syscall metadata table details. (The upcoming core syscall tracing modifications rely on this.) Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <1236955332-10133-3-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-13tracing/x86: basic implementation of syscall tracing for x86Frederic Weisbecker
Provide the x86 trace callbacks to trace syscalls. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> LKML-Reference: <1236401580-5758-3-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-13Merge branch 'core/locking' into tracing/ftraceIngo Molnar
2009-03-12uml: fix WARNING: vmlinux: 'memcpy' exported twiceakpm@linux-foundation.org
Fix the following warning on x86_64: LD vmlinux.o MODPOST vmlinux.o WARNING: vmlinux: 'memcpy' exported twice. Previous export was in vmlinux For x86_64, this symbol is already exported from arch/um/sys-x86_64/ksyms.c. Reported-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Tested-by: Boaz Harrosh <bharrosh@panasas.com> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-12UML on UML fixed: it did not startRenzo Davoli
It is currently impossible to run a user-mode linux machine inside another user-mode linux (UML on UML). It breaks after a few instructions. When it tries to check whether SYSEMU is installed (the inner) UML receives an inconsistent result (from the outer UML). This is the output of a broken attempt: $ ./linux mem=256m ubd0=cow Locating the bottom of the address space ... 0x0 Locating the top of the address space ... 0xc0000000 Core dump limits : soft - 0 hard - NONE Checking that ptrace can change system call numbers...OK Checking ptrace new tags for syscall emulation...unsupported Checking syscall emulation patch for ptrace...check_sysemu : expected SIGTRAP, got status = 256 $ The problem is the following: PTRACE_SYSCALL/SINGLESTEP is currently managed inside arch_ptrace for ARCH=um. PTRACE_SYSEMU/SUSEMU_SINGLESTEP is not captured in arch_ptrace's switch, therefore it is erroneously passed back to ptrace_request (in kernel/ptrace). This simple patch simply forces ptrace to return an error on PTRACE_SYSEMU/SUSEMU_SINGLESTEP as it is unsupported on ARCH=um, and fixes the problem. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Renzo Davoli <renzo@cs.unibo.it> Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-12Merge 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: sunhme: Fix qfe parent detection. sparc64: Fix lost interrupts on sun4u. sparc64: wait_event_interruptible_timeout may return -ERESTARTSYS jsflash: stop defining MAJOR_NR
2009-03-11MIPS: IP27: Enable RAID5 moduleRalf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-11MIPS: TXx9: update defconfigsAtsushi Nemoto
Enable following features: * MTD (PHYSMAP) * LED (LEDS_GPIO) * RBTX4939 * 7SEGLED * IDE (IDE_TX4938, IDE_TX4939) * SMC91X * RTC_DRV_TX4939 Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-11MIPS: NEC VR5500 processor support fixupShinya Kuribayashi
Current VR5500 processor support lacks of some functions which are expected to be configured/synthesized on arch initialization. Here're some VR5500A spec notes: * All execution hazards are handled in hardware. * Once VR5500A stops the operation of the pipeline by WAIT instruction, it could return from the standby mode only when either a reset, NMI request, or all enabled interrupts is/are detected. In other words, if interrupts are disabled by Status.IE=0, it keeps in standby mode even when interrupts are internally asserted. Notes on WAIT: The operation of the processor is undefined if WAIT insn is in the branch delay slot. The operation is also undefined if WAIT insn is executed when Status.EXL and Status.ERL are set to 1. * VR5500A core only implements the Load prefetch. With these changes, it boots fine. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-11MIPS: Fix build of non-CONFIG_SYSVIPC version of sys_32_ipcXiaotian Feng
Signed-off-by: Xiaotian Feng <xiaotian.feng@windriver.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-03-11Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: radeonfb/aty128fb: Disable broken early resume hook for PowerBooks hvc_console: Remove tty->low_latency on pseries backends powerpc: fix linkstation and storcenter compilation breakage powerpc/4xx: Enable SERIAL_OF support by default for Virtex platforms
2009-03-11x86: work around Fedora-11 x86-32 kernel failures on Intel Atom CPUsIngo Molnar
Impact: work around boot crash Work around Intel Atom erratum AAH41 (probabilistically) - it's triggering in the field. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Tested-by: Kyle McMartin <kyle@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-11Merge commit 'gcl/merge' into mergeBenjamin Herrenschmidt
2009-03-10m68knommu: m528x build fixSteven King
There isn't any mcfqspi.h in the tree, and without it everything inside the #ifdef CONFIG_SPI is uncompilable. Signed-off-by: Steven King <sfking@fdwdc.com> Acked-by: Greg Ungerer <gerg@snapgear.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-10m68knommu: m5206e build fixSteven King
Signed-off-by: Steven King <sfking@fdwdc.com> Acked-by: Greg Ungerer <gerg@snapgear.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-10xtensa: fix compilation somewhatAlexey Dobriyan
* ->put_char changes * HIGHMEM is bogus it seems, there is no kmap_atomic() et al * some includes Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Chris Zankel <zankel@tensilica.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-10Merge branches 'tracing/ftrace', 'tracing/textedit' and 'linus' into ↵Ingo Molnar
tracing/core
2009-03-10Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86 mmiotrace: fix remove_kmmio_fault_pages()
2009-03-10x86: expand irq-off region in text_poke()Masami Hiramatsu
Expand irq-off region to cover fixmap using code and cache synchronizing. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> LKML-Reference: <49B54688.8090403@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-10Merge branch 'x86/core' into tracing/ftraceIngo Molnar
Semantic merge: kernel/trace/trace_functions_graph.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-10Merge branches 'tracing/doc', 'tracing/ftrace', 'tracing/printk' and 'linus' ↵Ingo Molnar
into tracing/core
2009-03-10Merge branches 'x86/apic', 'x86/asm', 'x86/fixmap', 'x86/memtest', 'x86/mm', ↵Ingo Molnar
'x86/urgent', 'linus' and 'core/percpu' into x86/core
2009-03-10sh: Add media/soc_camera.h to board setup of Renesas AP325RXANobuhiro Iwamatsu
Other compilation errors were revised by commit of "sh: ap325rxa: Revert ov772x support" (08c2f5b4d76f83213e379b12df504269d21c9e7c) but other compilation errors are given. We revert this commit and need to add new header(media/soc_camera.h). This change revises new compilation error. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-09Merge branch 'fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ] Add p4-clockmod sysfs-ui removal to feature-removal schedule. Revert "[CPUFREQ] Disable sysfs ui for p4-clockmod."
2009-03-09Revert "[CPUFREQ] Disable sysfs ui for p4-clockmod."Dave Jones
This reverts commit e088e4c9cdb618675874becb91b2fd581ee707e6. Removing the sysfs interface for p4-clockmod was flagged as a regression in bug 12826. Course of action: - Find out the remaining causes of overheating, and fix them if possible. ACPI should be doing the right thing automatically. If it isn't, we need to fix that. - mark p4-clockmod ui as deprecated - try again with the removal in six months. It's not really feasible to printk about the deprecation, because it needs to happen at all the sysfs entry points, which means adding a lot of strcmp("p4-clockmod".. calls to the core, which.. bleuch. Signed-off-by: Dave Jones <davej@redhat.com>
2009-03-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (29 commits) p54: fix race condition in memory management cfg80211: test before subtraction on unsigned iwlwifi: fix error flow in iwl*_pci_probe rt2x00 : more devices to rt73usb.c rt2x00 : more devices to rt2500usb.c bonding: Fix device passed into ->ndo_neigh_setup(). vlan: Fix vlan-in-vlan crashes. net: Fix missing dev->neigh_setup in register_netdevice(). tmspci: fix request_irq race pkt_sched: act_police: Fix a rate estimator test. tg3: Fix 5906 link problems SCTP: change sctp_ctl_sock_init() to try IPv4 if IPv6 fails IPv6: add "disable" module parameter support to ipv6.ko sungem: another error printed one too early aoe: error printed 1 too early net pcmcia: worklimit reaches -1 net: more timeouts that reach -1 net: fix tokenring license dm9601: new vendor/product IDs netlink: invert error code in netlink_set_err() ...
2009-03-09powerpc: fix linkstation and storcenter compilation breakageGuennadi Liakhovetski
Defining flash partition table in platform code is deprecated, and due to recent changes linkstation and storcenter do not compile any more with their default configurations because of undefined references to physmap_set_partitions(). Instead of fixing them by using the correct kernel configuration macro in preprocessor conditional, remove partition table definitions altogether. Instead add support for partition definition on the command-line and in device tree to the default configurations. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-03-09lguest: fix for CONFIG_SPARSE_IRQ=yRusty Russell
Impact: remove lots of lguest boot WARN_ON() when CONFIG_SPARSE_IRQ=y We now need to call irq_to_desc_alloc_cpu() before set_irq_chip_and_handler_name(), but we can't do that from init_IRQ (no kmalloc available). So do it as we use interrupts instead. Also means we only alloc for irqs we use, which was the intent of CONFIG_SPARSE_IRQ anyway. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Ingo Molnar <mingo@redhat.com>
2009-03-09lguest: fix crash 'unhandled trap 13 at <native_read_msr_safe>'Rusty Russell
Impact: fix lguest boot crash on modern Intel machines The code in early_init_intel does: if (c->x86 > 6 || (c->x86 == 6 && c->x86_model >= 0xd)) { u64 misc_enable; rdmsrl(MSR_IA32_MISC_ENABLE, misc_enable); And that rdmsr faults (not allowed from non-0 PL). We can get around this by mugging the family ID part of the cpuid. 5 seems like a good number. Of course, this is a hack (how very lguest!). We could just indicate that we don't support MSRs, or implement lguest_rdmst. Reported-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Tested-by: Patrick McHardy <kaber@trash.net>
2009-03-08x86-32: make sure virt_addr_valid() returns false for fixmap addressesJeremy Fitzhardinge
I found that virt_addr_valid() was returning true for fixmap addresses. I'm not sure whether pfn_valid() is supposed to include this test, but there's no harm in being explicit. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Jiri Slaby <jirislaby@gmail.com> Cc: Yinghai Lu <yinghai@kernel.org> LKML-Reference: <49B166D6.2080505@goop.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-08x86 mmiotrace: fix remove_kmmio_fault_pages()Stuart Bennett
Impact: fix race+crash in mmiotrace The list manipulation in remove_kmmio_fault_pages() was broken. If more than one consecutive kmmio_fault_page was re-added during the grace period between unregister_kmmio_probe() and remove_kmmio_fault_pages(), the list manipulation failed to remove pages from the release list. After a second grace period the pages get into rcu_free_kmmio_fault_pages() and raise a BUG_ON() kernel crash. The list manipulation is fixed to properly remove pages from the release list. This bug has been present from the very beginning of mmiotrace in the mainline kernel. It was introduced in 0fd0e3da ("x86: mmiotrace full patch, preview 1"); An urgent fix for Linus. Tested by Stuart (on 32-bit) and Pekka (on amd and intel 64-bit systems, nouveau and nvidia proprietary). Signed-off-by: Stuart Bennett <stuart@freedesktop.org> Signed-off-by: Pekka Paalanen <pq@iki.fi> LKML-Reference: <20090308202135.34933feb@daedalus.pq.iki.fi> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-08x86: fix warning about nodeidYinghai Lu
Impact: cleanup Ingo found there warning about nodeid with some configs. try to use for_each_online_node for non numa too. in that case nodeid will be 0. also move out boundary checking from setup_node_bootmem(), so non-numa config will not check it. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <49B03069.80001@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-08Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, pebs: correct qualifier passed to ds_write_config() from ds_request_pebs() x86, bts: remove bad warning x86: add Dell XPS710 reboot quirk x86, math-emu: fix init_fpu for task != current x86: EFI: Back efi_ioremap with init_memory_mapping instead of FIX_MAP x86: fix DMI on EFI
2009-03-08Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: (28 commits) Blackfin arch: SPI_MMC is now mainlined MMC_SPI Blackfin arch: disable legacy /proc/scsi/ support by default Blackfin arch: remove duplicated ANOMALY_05000448 ifdef check Blackfin arch: add stubs for anomalies 447 and 448 Blackfin arch: cleanup bfin_sport.h header and export it to userspace Blackfin arch: fix bug - gdb signull case make trunk kernel panic frequently Blackfin arch: remove spurious dash when dcache is off Blackfin arch: mark init_pda as __init as only __init funcs all it Blackfin arch: fix bug - On bf548-ezkit, ethernet fails to work after wakeup from "mem" Blackfin arch: Random read/write errors are a bad thing Blackfin arch: update default kernel config, select KSZ8893M driver for BF518 Blackfin arch: Fix bug - KGDB single step into the middle of a 4 bytes instruction on bf561 after soft bp is hit Blackfin arch: Fix bug - make ksz8893m driver available when bfin_mac is enabled Blackfin arch: make sure people do not set the kernel load address too high Blackfin arch: fix bug - The SPORT_HYS bit is not set for BF561 0.5 Blackfin arch: update anomaly sheets to match latest public info Blackfin arch: Fix BUG - kernel fails to build in pm.c when allow wakeup fromi standby by GPIO Blackfin arch: PM_BFIN_WAKE_GP: update help Blackfin arch: fix bug - kgdb fails to continue after setting breakpoint on bf561-ezkit kernel with smp patch Blackfin arch: Enable Write Back Cache on all Blackfin Boards ...
2009-03-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: ata: add CFA specific identify data words remove stale comment from <linux/hdreg.h> AT91: initialize Compact Flash on AT91SAM9263 cpu ide: add at91_ide driver ide: allow to wrap interrupt handler ide-iops: fix odd-length ATAPI PIO transfers ide: NULL noise: drivers/ide/ide-*.c ide: expiry() returns int, negative expiry() return values won't be noticed
2009-03-08Merge branch 'release' of ↵Linus Torvalds
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] fix PCI DMA flag propagation on SN (Altix) with PICs
2009-03-08MIPS: compat: Implement is_compat_task.Ralf Baechle
This is a build fix required after "x86-64: seccomp: fix 32/64 syscall hole" (commit 5b1017404aea6d2e552e991b3fd814d839e9cd67). MIPS doesn't have the issue that was fixed for x86-64 by that patch. This also doesn't solve the N32 issue which is that N32 seccomp processes will be treated as non-compat processes thus only have access to N64 syscalls. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-08x86: don't define __this_fixmap_does_not_exist()Wang Chen
Impact: improve out-of-range fixmap index debugging Commit "1b42f51630c7eebce6fb780b480731eb81afd325" defined the __this_fixmap_does_not_exist() function with a WARN_ON(1) in it. This causes the linker to not report an error when __this_fixmap_does_not_exist() is called with a non-constant parameter. Ingo defined __this_fixmap_does_not_exist() because he wanted to get virt addresses of fix memory of nest level by non-constant index. But we can fix this and still keep the link-time check: We can get the four slot virt addresses on link time and store them to array slot_virt[]. Then we can then refer the slot_virt with non-constant index, in the ioremap-leak detection code. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> LKML-Reference: <49B2075B.4070509@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-08x86: remove smp_apply_quirks()/smp_checks()Yinghai Lu
Impact: cleanup and code size reduction on 64-bit This code is only applied to Intel Pentium and AMD K7 32-bit cpus. Move those checks to intel_init()/amd_init() for 32-bit so 64-bit will not build this code. Also change to use cpu_index check to see if we need to emit warning. Signed-off-by: Yinghai Lu <yinghai@kernel.org> LKML-Reference: <49B377D2.8030108@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-08x86: UV: remove uv_flush_tlb_others() WARN_ONCliff Wickman
In uv_flush_tlb_others() (arch/x86/kernel/tlb_uv.c), the "WARN_ON(!in_atomic())" fails if CONFIG_PREEMPT is not enabled. And CONFIG_PREEMPT is not enabled by default in the distribution that most UV owners will use. We could #ifdef CONFIG_PREEMPT the warning, but that is not good form. And there seems to be no suitable fix to in_atomic() when CONFIG_PREMPT is not on. As Ingo commented: > and we have no proper primitive to test for atomicity. (mainly > because we dont know about atomicity on a non-preempt kernel) So we drop the WARN_ON. Signed-off-by: Cliff Wickman <cpw@sgi.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-06[IA64] fix PCI DMA flag propagation on SN (Altix) with PICsJeremy Higdon
We recently discovered a problem with passing of DMA attributes on SN systems with the older PIC chips. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Jeremy Higdon <jeremy@sgi.com> Cc: <habeck@sgi.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-03-06x86: linkage.h - guard assembler specifics by __ASSEMBLY__Cyrill Gorcunov
Stephen Rothwell reported: |Today's linux-next build (x86_64 allmodconfig) produced this warning: | |In file included from drivers/char/epca.c:49: |drivers/char/digiFep1.h:7:1: warning: "GLOBAL" redefined |In file included from include/linux/linkage.h:5, | from include/linux/kernel.h:11, | from arch/x86/include/asm/system.h:10, | from arch/x86/include/asm/processor.h:17, | from include/linux/prefetch.h:14, | from include/linux/list.h:6, | from include/linux/module.h:9, | from drivers/char/epca.c:29: |arch/x86/include/asm/linkage.h:55:1: warning: this is the location of the previous definition | |Probably introduced by commit 95695547a7db44b88a7ee36cf5df188de267e99e |("x86: asm linkage - introduce GLOBAL macro") from the x86 tree. Any assembler specific snippets being placed in headers are to be protected by __ASSEMBLY__. Fixed. Also move __ALIGN definition under the same protection as well. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> LKML-Reference: <20090306160833.GB7420@localhost> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-06x86: implement atomic text_poke() via fixmapMasami Hiramatsu
Use fixmaps instead of vmap/vunmap in text_poke() for avoiding page allocation and delayed unmapping. At the result of above change, text_poke() becomes atomic and can be called from stop_machine() etc. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Acked-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> LKML-Reference: <49B14352.2040705@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-06tracing, Text Edit Lock - SMP alternatives supportMasami Hiramatsu
Use the mutual exclusion provided by the text edit lock in alternatives code. Since alternative_smp_* will be called from module init code, etc, we'd better protect it from other subsystems. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> LKML-Reference: <49B14332.9030109@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-06Merge branch 'x86/core' into tracing/texteditIngo Molnar
Conflicts: arch/x86/Kconfig block/blktrace.c kernel/irq/handle.c Semantic conflict: kernel/trace/blktrace.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-06x86, pebs: correct qualifier passed to ds_write_config() from ds_request_pebs()Markus Metzger
ds_write_config() can write the BTS as well as the PEBS part of the DS config. ds_request_pebs() passes the wrong qualifier, which results in the wrong configuration to be written. Reported-by: Stephane Eranian <eranian@googlemail.com> Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> LKML-Reference: <20090305085721.A22550@sedona.ch.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-06x86, bts: remove bad warningMarkus Metzger
In case a ptraced task is reaped (while the tracer is still attached), ds_exit_thread() is called before ptrace_exit(). The latter will release the bts_tracer and remove the thread's ds_ctx. The former will WARN() if the context is not NULL. Oleg Nesterov submitted patches that move ptrace_exit() before exit_thread() and thus reverse the order of the above calls. Remove the bad warning. I will add it again when Oleg's changes are in. Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> LKML-Reference: <20090305084954.A22000@sedona.ch.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-06x86: rename do_not_nx to disable_nx in mm/init_64.cPekka Enberg
As a preparational step for unifying noexec handling on 32-bit and 64-bit, rename the do_not_nx variable to disable_nx on 64-bit. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> LKML-Reference: <1236265497.31324.11.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-06x86: fix uninitialized variable in init_memory_mapping()Pekka Enberg
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> LKML-Reference: <1236265466.31324.9.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-06x86: make "memtest" like "memtest=17"Yinghai Lu
Impact: make boot command line "memtest" do one loop by default So don't need to guess many patterns in one loop. Signed-off-by: Yinghai Lu <yinghai@kernel.org> LKML-Reference: <49B10532.3020105@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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