- 24 1月, 2013 1 次提交
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由 Mika Westerberg 提交于
We are starting to see traditional SoC peripherals also in the x86 world in chips like Intel Lynxpoint. Typically we already have a Linux driver for the peripheral but it takes advantage of the common clk framework to control and retrieve information about the peripheral clock. So far there hasn't been a standard way on x86 to pass information such as clock rate from whatever the configuration system is used to the driver, but instead different variations have emerged, like adding this information to the platform data. Solve this by adding a new config option X86_INTEL_LPSS. If this is selected we enable common clk framework (and everything else) that is needed to support the Intel LPSS drivers. Enabling common clk framework on x86 was originally proposed by Mark Brown. Signed-off-by: NMika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 20 12月, 2012 2 次提交
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由 Al Viro 提交于
Conditional on CONFIG_GENERIC_SIGALTSTACK; architectures that do not select it are completely unaffected Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
All architectures have CONFIG_GENERIC_KERNEL_THREAD CONFIG_GENERIC_KERNEL_EXECVE __ARCH_WANT_SYS_EXECVE None of them have __ARCH_WANT_KERNEL_EXECVE and there are only two callers of kernel_execve() (which is a trivial wrapper for do_execve() now) left. Kill the conditionals and make both callers use do_execve(). Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 11 12月, 2012 1 次提交
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由 Peter Zijlstra 提交于
NOTE: This patch is based on "sched, numa, mm: Add fault driven placement and migration policy" but as it throws away all the policy to just leave a basic foundation I had to drop the signed-offs-by. This patch creates a bare-bones method for setting PTEs pte_numa in the context of the scheduler that when faulted later will be faulted onto the node the CPU is running on. In itself this does nothing useful but any placement policy will fundamentally depend on receiving hints on placement from fault context and doing something intelligent about it. Signed-off-by: NMel Gorman <mgorman@suse.de> Acked-by: NRik van Riel <riel@redhat.com>
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- 08 12月, 2012 1 次提交
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由 Daniel J Blueman 提交于
Add NumaChip-specific PCI access mechanism via MMCONFIG cycles, but preventing access to AMD Northbridges which shouldn't respond. Signed-off-by: NDaniel J Blueman <daniel@numascale-asia.com> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
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- 01 12月, 2012 1 次提交
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由 Frederic Weisbecker 提交于
Create a new subsystem that probes on kernel boundaries to keep track of the transitions between level contexts with two basic initial contexts: user or kernel. This is an abstraction of some RCU code that use such tracking to implement its userspace extended quiescent state. We need to pull this up from RCU into this new level of indirection because this tracking is also going to be used to implement an "on demand" generic virtual cputime accounting. A necessary step to shutdown the tick while still accounting the cputime. Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Li Zhong <zhong@linux.vnet.ibm.com> Cc: Gilad Ben-Yossef <gilad@benyossef.com> Reviewed-by: NSteven Rostedt <rostedt@goodmis.org> [ paulmck: fix whitespace error and email address. ] Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>
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- 30 11月, 2012 2 次提交
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由 H. Peter Anvin 提交于
All 486+ CPUs support XADD, so remove the fallback 386 support code. Signed-off-by: NH. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1354132230-21854-4-git-send-email-hpa@linux.intel.com
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由 H. Peter Anvin 提交于
Remove the CONFIG_M386 symbol from Kconfig so that it cannot be selected. Signed-off-by: NH. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1354132230-21854-2-git-send-email-hpa@linux.intel.com
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- 29 11月, 2012 1 次提交
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 15 11月, 2012 2 次提交
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由 Fenghua Yu 提交于
CONFIG_DEBUG_HOTPLUG_CPU0 is for debugging the CPU0 hotplug feature. The switch offlines CPU0 as soon as possible and boots userspace up with CPU0 offlined. User can online CPU0 back after boot time. The default value of the switch is off. To debug CPU0 hotplug, you need to enable CPU0 offline/online feature by either turning on CONFIG_BOOTPARAM_HOTPLUG_CPU0 during compilation or giving cpu0_hotplug kernel parameter at boot. It's safe and early place to take down CPU0 after all hotplug notifiers are installed and SMP is booted. Please note that some applications or drivers, e.g. some versions of udevd, during boot time may put CPU0 online again in this CPU0 hotplug debug mode. In this debug mode, setup_local_APIC() may report a warning on max_loops<=0 when CPU0 is onlined back after boot time. This is because pending interrupt in IRR can not move to ISR. The warning is not CPU0 specfic and it can happen on other CPUs as well. It is harmless except the first CPU0 online takes a bit longer time. And so this debug mode is useful to expose this issue. I'll send a seperate patch to fix this generic warning issue. Signed-off-by: NFenghua Yu <fenghua.yu@intel.com> Link: http://lkml.kernel.org/r/1352835171-3958-15-git-send-email-fenghua.yu@intel.comSigned-off-by: NH. Peter Anvin <hpa@linux.intel.com>
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由 Fenghua Yu 提交于
New config switch CONFIG_BOOTPARAM_HOTPLUG_CPU0 sets default state of whether the CPU0 hotplug is on or off. If the switch is off, CPU0 is not hotpluggable by default. But the CPU0 hotplug feature can still be turned on by kernel parameter cpu0_hotplug at boot. If the switch is on, CPU0 is always hotpluggable. The default value of the switch is off. Signed-off-by: NFenghua Yu <fenghua.yu@intel.com> Link: http://lkml.kernel.org/r/1352835171-3958-3-git-send-email-fenghua.yu@intel.comSigned-off-by: NH. Peter Anvin <hpa@linux.intel.com>
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- 26 10月, 2012 1 次提交
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由 Bin Gao 提交于
MPS tables are not needed for systems that have proper ACPI support. This is also true for systems that have SFI in place. So this patch allows the configuration (turning off) of CONFIG_X86_MPPARSE when either ACPI or SFI is present. Signed-off-by: NBin Gao <bin.gao@intel.com> Cc: Len Brown <len.brown@intel.com> Cc: Bin Gao <bin.gao@linux.intel.com> Link: http://lkml.kernel.org/r/20121025163544.GB38477@bingao-desk1.fm.intel.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
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- 13 10月, 2012 1 次提交
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 09 10月, 2012 4 次提交
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由 Gerald Schaefer 提交于
Cleanup patch in preparation for transparent hugepage support on s390. Adding new architectures to the TRANSPARENT_HUGEPAGE config option can make the "depends" line rather ugly, like "depends on (X86 || (S390 && 64BIT)) && MMU". This patch adds a HAVE_ARCH_TRANSPARENT_HUGEPAGE instead. x86 already has MMU "def_bool y", so the MMU check is superfluous there and HAVE_ARCH_TRANSPARENT_HUGEPAGE can be selected in arch/x86/Kconfig. Signed-off-by: NGerald Schaefer <gerald.schaefer@de.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Hillf Danton <dhillf@gmail.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Catalin Marinas 提交于
Introduce SYSCTL_EXCEPTION_TRACE config option and selec it in the architectures requiring support for the "exception-trace" debug_table entry in kernel/sysctl.c. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Catalin Marinas 提交于
Introduce HAVE_DEBUG_KMEMLEAK config option and select it in corresponding architecture Kconfig files. DEBUG_KMEMLEAK now only depends on HAVE_DEBUG_KMEMLEAK. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Michal Simek <monstr@monstr.eu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Catalin Marinas 提交于
Introduce HAVE_UID16 config option and select it in corresponding architecture Kconfig files. UID16 now only depends on HAVE_UID16. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Acked-by: NGeert Uytterhoeven <geert@linux-m68k.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 01 10月, 2012 1 次提交
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 28 9月, 2012 1 次提交
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由 David Howells 提交于
Use the mapping of Elf_[SPE]hdr, Elf_Addr, Elf_Sym, Elf_Dyn, Elf_Rel/Rela, ELF_R_TYPE() and ELF_R_SYM() to either the 32-bit version or the 64-bit version into asm-generic/module.h for all arches bar MIPS. Also, use the generic definition mod_arch_specific where possible. To this end, I've defined three new config bools: (*) HAVE_MOD_ARCH_SPECIFIC Arches define this if they don't want to use the empty generic mod_arch_specific struct. (*) MODULES_USE_ELF_RELA Arches define this if their modules can contain RELA records. This causes the Elf_Rela mapping to be emitted and allows apply_relocate_add() to be defined by the arch rather than have the core emit an error message. (*) MODULES_USE_ELF_REL Arches define this if their modules can contain REL records. This causes the Elf_Rel mapping to be emitted and allows apply_relocate() to be defined by the arch rather than have the core emit an error message. Note that it is possible to allow both REL and RELA records: m68k and mips are two arches that do this. With this, some arch asm/module.h files can be deleted entirely and replaced with a generic-y marker in the arch Kbuild file. Additionally, I have removed the bits from m32r and score that handle the unsupported type of relocation record as that's now handled centrally. Signed-off-by: NDavid Howells <dhowells@redhat.com> Acked-by: NSam Ravnborg <sam@ravnborg.org> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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- 26 9月, 2012 1 次提交
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由 Frederic Weisbecker 提交于
do_notify_resume() may be called on irq or exception exit. But at that time the exception has already called rcu_user_enter() and the irq has already called rcu_irq_exit(). Since it can use RCU read side critical section, we must call rcu_user_exit() before doing anything there. Then we must call back rcu_user_enter() after this function because we know we are going to userspace from there. This complete support for userspace RCU extended quiescent state in x86-64. Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com> Cc: Alessio Igor Bogani <abogani@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Avi Kivity <avi@redhat.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Christoph Lameter <cl@linux.com> Cc: Geoff Levand <geoff@infradead.org> Cc: Gilad Ben Yossef <gilad@benyossef.com> Cc: Hakan Akkan <hakanakkan@gmail.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Kevin Hilman <khilman@ti.com> Cc: Max Krasnyansky <maxk@qualcomm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephen Hemminger <shemminger@vyatta.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Sven-Thorsten Dietrich <thebigcorporation@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: NJosh Triplett <josh@joshtriplett.org>
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- 25 9月, 2012 3 次提交
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由 Frederic Weisbecker 提交于
There is no known reason for this option to be unavailable on other archs than x86. They just need to call enable_sched_clock_irqtime() if they have a sufficiently finegrained clock to make it working. Move it to the general option and let the user choose between it and pure tick based or virtual cputime accounting. Note that virtual cputime accounting already performs a finegrained irqtime accounting. CONFIG_IRQ_TIME_ACCOUNTING is a kind of middle ground between tick and virtual based accounting. So CONFIG_IRQ_TIME_ACCOUNTING and CONFIG_VIRT_CPU_ACCOUNTING are mutually exclusive choices. Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org>
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由 John Stultz 提交于
Switch x86_64 to using sub-ns precise vsyscall Cc: Tony Luck <tony.luck@intel.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Turner <pjt@google.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
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由 John Stultz 提交于
To help migrate archtectures over to the new update_vsyscall method, redfine CONFIG_GENERIC_TIME_VSYSCALL as CONFIG_GENERIC_TIME_VSYSCALL_OLD Cc: Tony Luck <tony.luck@intel.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Turner <pjt@google.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
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- 22 9月, 2012 1 次提交
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由 H. Peter Anvin 提交于
The STAC/CLAC instructions are only available with SMAP, but on the other hand they aren't needed if SMAP is not available, or before we start to run userspace, so construct them as alternatives which start out as noops and are enabled by the alternatives mechanism. Signed-off-by: NH. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1348256595-29119-7-git-send-email-hpa@linux.intel.com
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- 18 9月, 2012 1 次提交
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由 Borislav Petkov 提交于
MCA is the basic support for hardware error logging and reporting, and it is majorly unwise to run without it so enable machine check software support by default on x86. Signed-off-by: NBorislav Petkov <borislav.petkov@amd.com> Acked-by: NTony Luck <tony.luck@intel.com>
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- 13 9月, 2012 1 次提交
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由 Jan Beulich 提交于
The main goal here is to have the resulting .config no carry any options that aren't enabled and can't be (i.e such where the default is "no" and can't be changed), so that if any such option later gets a user visible prompt, the user will actually be prompted on a "make ...oldconfig" rather than keeping the previously invisible option disabled. There's a little bit of other trivial cleanup mixed in here. Signed-off-by: NJan Beulich <jbeulich@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/504DEE19020000780009A285@nat28.tlf.novell.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
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- 05 9月, 2012 1 次提交
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由 Joe Millenbach 提交于
Deleted the no longer valid example of which x86 CPUs lack a hardware IOMMU, and moved the "If unsure..." statement to a new line to follow the style of surrounding options. Signed-off-by: NJoe Millenbach <jmillenbach@gmail.com> Reviewed-by: NJosh Triplett <josh@joshtriplett.org> Cc: team-fjord@googlegroups.com Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Link: http://lkml.kernel.org/r/1346632700-29113-1-git-send-email-jmillenbach@gmail.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
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- 23 8月, 2012 3 次提交
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由 Steven Rostedt 提交于
If the kernel is compiled with gcc 4.6.0 which supports -mfentry, then use that instead of mcount. With mcount, frame pointers are forced with the -pg option and we get something like: <can_vma_merge_before>: 55 push %rbp 48 89 e5 mov %rsp,%rbp 53 push %rbx 41 51 push %r9 e8 fe 6a 39 00 callq ffffffff81483d00 <mcount> 31 c0 xor %eax,%eax 48 89 fb mov %rdi,%rbx 48 89 d7 mov %rdx,%rdi 48 33 73 30 xor 0x30(%rbx),%rsi 48 f7 c6 ff ff ff f7 test $0xfffffffff7ffffff,%rsi With -mfentry, frame pointers are no longer forced and the call looks like this: <can_vma_merge_before>: e8 33 af 37 00 callq ffffffff81461b40 <__fentry__> 53 push %rbx 48 89 fb mov %rdi,%rbx 31 c0 xor %eax,%eax 48 89 d7 mov %rdx,%rdi 41 51 push %r9 48 33 73 30 xor 0x30(%rbx),%rsi 48 f7 c6 ff ff ff f7 test $0xfffffffff7ffffff,%rsi This adds the ftrace hook at the beginning of the function before a frame is set up, and allows the function callbacks to be able to access parameters. As kprobes now can use function tracing (at least on x86) this speeds up the kprobe hooks that are at the beginning of the function. Link: http://lkml.kernel.org/r/20120807194100.130477900@goodmis.orgAcked-by: NIngo Molnar <mingo@kernel.org> Reviewed-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Andi Kleen <andi@firstfloor.org> Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
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由 Marcelo Tosatti 提交于
The distinction between CONFIG_KVM_CLOCK and CONFIG_KVM_GUEST is not so clear anymore, as demonstrated by recent bugs caused by poor handling of on/off combinations of these options. Merge CONFIG_KVM_CLOCK into CONFIG_KVM_GUEST. Reported-By: NOGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Borislav Petkov 提交于
Update and clarify Kconfig help text along with menu names. Signed-off-by: NBorislav Petkov <borislav.petkov@amd.com> Link: http://lkml.kernel.org/r/1344361461-10076-6-git-send-email-bp@amd64.orgSigned-off-by: NH. Peter Anvin <hpa@linux.intel.com>
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- 10 8月, 2012 2 次提交
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由 Jiri Olsa 提交于
Introducing PERF_SAMPLE_STACK_USER sample type bit to trigger the dump of the user level stack on sample. The size of the dump is specified by sample_stack_user value. Being able to dump parts of the user stack, starting from the stack pointer, will be useful to make a post mortem dwarf CFI based stack unwinding. Added HAVE_PERF_USER_STACK_DUMP config option to determine if the architecture provides user stack dump on perf event samples. This needs access to the user stack pointer which is not unified across architectures. Enabling this for x86 architecture. Signed-off-by: NJiri Olsa <jolsa@redhat.com> Original-patch-by: NFrederic Weisbecker <fweisbec@gmail.com> Cc: "Frank Ch. Eigler" <fche@redhat.com> Cc: Arun Sharma <asharma@fb.com> Cc: Benjamin Redelings <benjamin.redelings@nescent.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Robert Richter <robert.richter@amd.com> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Ulrich Drepper <drepper@gmail.com> Link: http://lkml.kernel.org/r/1344345647-11536-6-git-send-email-jolsa@redhat.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
This brings a new API to help the selective dump of registers on event sampling, and its implementation for x86 arch. Added HAVE_PERF_REGS config option to determine if the architecture provides perf registers ABI. The information about desired registers will be passed in u64 mask. It's up to the architecture to map the registers into the mask bits. For the x86 arch implementation, both 32 and 64 bit registers bits are defined within single enum to ensure 64 bit system can provide register dump for compat task if needed in the future. Original-patch-by: NFrederic Weisbecker <fweisbec@gmail.com> [ Added missing linux/errno.h include ] Signed-off-by: NJiri Olsa <jolsa@redhat.com> Cc: "Frank Ch. Eigler" <fche@redhat.com> Cc: Arun Sharma <asharma@fb.com> Cc: Benjamin Redelings <benjamin.redelings@nescent.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Robert Richter <robert.richter@amd.com> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Ulrich Drepper <drepper@gmail.com> Link: http://lkml.kernel.org/r/1344345647-11536-2-git-send-email-jolsa@redhat.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 31 7月, 2012 2 次提交
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由 Will Deacon 提交于
Rather than #define the options manually in the architecture code, add Kconfig options for them and select them there instead. This also allows us to select the compat IPC version parsing automatically for platforms using the old compat IPC interface. Reported-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NWill Deacon <will.deacon@arm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Catalin Marinas 提交于
Introduce CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE and use this instead of the multitude of #if defined() checks in atomic64_test.c Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 09 7月, 2012 1 次提交
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由 Jean Delvare 提交于
This feature has been around for over 5 years now, and has no CONFIG_EXPERIMENTAL dependency anymore, so remove the '(EXPERIMENTAL)' tag from the help text as well. Signed-off-by: NJean Delvare <jdelvare@suse.de> Acked-by: NArjan van de Ven <arjan@linux.intel.com> Link: http://lkml.kernel.org/r/1341583705.4655.18.camel@amber.siteSigned-off-by: NIngo Molnar <mingo@kernel.org>
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- 02 6月, 2012 1 次提交
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由 Matt Fleming 提交于
Since we can't expect every user to read the EFI boot stub code it seems prudent to have a couple of paragraphs explaining what it is and how it works. The "initrd=" option in particular is tricky because it only understands absolute EFI-style paths (backslashes as directory separators), and until now this hasn't been documented anywhere. This has tripped up a couple of users. Cc: Matthew Garrett <mjg@redhat.com> Cc: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: NMatt Fleming <matt.fleming@intel.com> Link: http://lkml.kernel.org/r/1331907517-3985-4-git-send-email-matt@console-pimps.orgSigned-off-by: NH. Peter Anvin <hpa@zytor.com>
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- 27 5月, 2012 2 次提交
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由 Linus Torvalds 提交于
This throws away the old x86-specific functions in favor of the generic optimized version. Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Linus Torvalds 提交于
The generic strncpy_from_user() is not really optimal, since it is designed to work on both little-endian and big-endian. And on little-endian you can simplify much of the logic to find the first zero byte, since little-endian arithmetic doesn't have to worry about the carry bit propagating into earlier bytes (only later bytes, which we don't care about). But I have patches to make the generic routines use the architecture- specific <asm/word-at-a-time.h> infrastructure, so that we can regain the little-endian optimizations. But before we do that, switch over to the generic routines to make the patches each do just one well-defined thing. Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 22 5月, 2012 2 次提交
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由 Thomas Gleixner 提交于
Sigh, I missed to check which architecture Kconfig files actually include the core Kconfig file. There are a few which did not. So we broke them. Instead of adding the includes to those, we are better off to move the include to init/Kconfig like we did already with irqs and others. This does not change anything for the architectures using the old style periodic timer mode. It just solves the build wreckage there. For those architectures which use the clock events infrastructure it moves the include of the core Kconfig file to "General setup" which is a way more logical place than having it at random locations specified by the architecture specific Kconfigs. Reported-by: NIngo Molnar <mingo@kernel.org> Cc: Anna-Maria Gleixner <anna-maria@glx-um.de> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Sam Ravnborg 提交于
There is no point having the NET dependency on the select target, as it forces all users to depend on NET to tell they support BPF_JIT. Move the config option to the bottom of the file - this could be a nice place also for future "selectable" config symbols. Fix up all users to drop the dependency on NET now that it is not required to supress warnings for non-NET builds. Reported-by: NLinus Torvalds <torvalds@linux-foundation.org> Signed-off-by: NSam Ravnborg <sam@ravnborg.org> Acked-by: NDavid Miller <davem@davemloft.net> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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