- 25 5月, 2011 2 次提交
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由 Stephen Boyd 提交于
Most arches define CONFIG_DEBUG_STACK_USAGE exactly the same way. Move it to lib/Kconfig.debug so each arch doesn't have to define it. This obviously makes the option generic, but that's fine because the config is already used in generic code. It's not obvious to me that sysrq-P actually does anything caution by keeping the most inclusive wording. Signed-off-by: NStephen Boyd <sboyd@codeaurora.org> Cc: Chris Metcalf <cmetcalf@tilera.com> Acked-by: NDavid S. Miller <davem@davemloft.net> Acked-by: NRichard Weinberger <richard@nod.at> Acked-by: NMike Frysinger <vapier@gentoo.org> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Hirokazu Takata <takata@linux-m32r.org> Acked-by: NRalf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Chen Liqin <liqin.chen@sunplusct.com> Cc: Lennox Wu <lennox.wu@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> 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 Stephen Boyd 提交于
DEBUG_PER_CPU_MAPS is used in lib/cpumask.c as well as in inlcude/linux/cpumask.h and thus it has outgrown its use within x86 and powerpc alone. Any arch with SMP support may want to get some more debugging, so make this option generic. Signed-off-by: NStephen Boyd <sboyd@codeaurora.org> Cc: <linux-arch@vger.kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 21 1月, 2011 1 次提交
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由 David Rientjes 提交于
The meaning of CONFIG_EMBEDDED has long since been obsoleted; the option is used to configure any non-standard kernel with a much larger scope than only small devices. This patch renames the option to CONFIG_EXPERT in init/Kconfig and fixes references to the option throughout the kernel. A new CONFIG_EMBEDDED option is added that automatically selects CONFIG_EXPERT when enabled and can be used in the future to isolate options that should only be considered for embedded systems (RISC architectures, SLOB, etc). Calling the option "EXPERT" more accurately represents its intention: only expert users who understand the impact of the configuration changes they are making should enable it. Reviewed-by: NIngo Molnar <mingo@elte.hu> Acked-by: NDavid Woodhouse <david.woodhouse@intel.com> Signed-off-by: NDavid Rientjes <rientjes@google.com> Cc: Greg KH <gregkh@suse.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jens Axboe <axboe@kernel.dk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Robin Holt <holt@sgi.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 18 11月, 2010 1 次提交
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由 matthieu castet 提交于
This patch is a logical extension of the protection provided by CONFIG_DEBUG_RODATA to LKMs. The protection is provided by splitting module_core and module_init into three logical parts each and setting appropriate page access permissions for each individual section: 1. Code: RO+X 2. RO data: RO+NX 3. RW data: RW+NX In order to achieve proper protection, layout_sections() have been modified to align each of the three parts mentioned above onto page boundary. Next, the corresponding page access permissions are set right before successful exit from load_module(). Further, free_module() and sys_init_module have been modified to set module_core and module_init as RW+NX right before calling module_free(). By default, the original section layout and access flags are preserved. When compiled with CONFIG_DEBUG_SET_MODULE_RONX=y, the patch will page-align each group of sections to ensure that each page contains only one type of content and will enforce RO/NX for each group of pages. -v1: Initial proof-of-concept patch. -v2: The patch have been re-written to reduce the number of #ifdefs and to make it architecture-agnostic. Code formatting has also been corrected. -v3: Opportunistic RO/NX protection is now unconditional. Section page-alignment is enabled when CONFIG_DEBUG_RODATA=y. -v4: Removed most macros and improved coding style. -v5: Changed page-alignment and RO/NX section size calculation -v6: Fixed comments. Restricted RO/NX enforcement to x86 only -v7: Introduced CONFIG_DEBUG_SET_MODULE_RONX, added calls to set_all_modules_text_rw() and set_all_modules_text_ro() in ftrace -v8: updated for compatibility with linux 2.6.33-rc5 -v9: coding style fixes -v10: more coding style fixes -v11: minor adjustments for -tip -v12: minor adjustments for v2.6.35-rc2-tip -v13: minor adjustments for v2.6.37-rc1-tip Signed-off-by: NSiarhei Liakh <sliakh.lkml@gmail.com> Signed-off-by: NXuxian Jiang <jiang@cs.ncsu.edu> Acked-by: NArjan van de Ven <arjan@linux.intel.com> Reviewed-by: NJames Morris <jmorris@namei.org> Signed-off-by: NH. Peter Anvin <hpa@zytor.com> Cc: Andi Kleen <ak@muc.de> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Dave Jones <davej@redhat.com> Cc: Kees Cook <kees.cook@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <4CE2F914.9070106@free.fr> [ minor cleanliness edits, -v14: build failure fix ] Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 08 10月, 2010 1 次提交
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由 Feng Tang 提交于
Intel Moorestown platform has a spi-uart device(Maxim3110), which connects to a Designware spi core controller. This patch will add early console function based on it. As it will be used long before Linux spi subsystem get initialised, we simply directly manipulate the spi controller's register to acheive the early console func. This is safe as it will be disabled when devices subsytem get initialised. To use it, user need enable CONFIG_X86_MRST_EARLY_PRINTK in kenrel config and add "earlyprintk=mrst" in kernel command line. Signed-off-by: NFeng Tang <feng.tang@intel.com> Acked-by: NAlan Cox <alan@linux.intel.com> Cc: greg@kroah.com LKML-Reference: <1284361736-23011-4-git-send-email-feng.tang@intel.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 29 6月, 2010 2 次提交
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由 Christoph Hellwig 提交于
These days 4 kilobytes of stack just aren't enough for reliably operation, and people using lots of threads have long switched to 64-bit kernels, so remove the CONFIG_4KSTACKS option. Signed-off-by: NChristoph Hellwig <hch@lst.de> LKML-Reference: <20100628121614.GB6605@lst.de> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Christoph Hellwig 提交于
IRQ stacks provide much better safety against unexpected stack use from interrupts, at the minimal downside of slightly higher memory usage. Enable irq stacks also for the default 8k stack on 32-bit kernels to minimize the problem of stack overflows through interrupt activity. This is what the 64-bit kernel and various other architectures already do. Signed-off-by: NChristoph Hellwig <hch@lst.de> LKML-Reference: <20100628121554.GA6605@lst.de> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 29 4月, 2010 1 次提交
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由 Jan Beulich 提交于
No functional change intended. Signed-off-by: NJan Beulich <jbeulich@novell.com> LKML-Reference: <4BCF2690020000780003B340@vpn.id2.novell.com> Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
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- 26 3月, 2010 1 次提交
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由 Peter Zijlstra 提交于
Support for the PMU's BTS features has been upstreamed in v2.6.32, but we still have the old and disabled ptrace-BTS, as Linus noticed it not so long ago. It's buggy: TIF_DEBUGCTLMSR is trampling all over that MSR without regard for other uses (perf) and doesn't provide the flexibility needed for perf either. Its users are ptrace-block-step and ptrace-bts, since ptrace-bts was never used and ptrace-block-step can be implemented using a much simpler approach. So axe all 3000 lines of it. That includes the *locked_memory*() APIs in mm/mlock.c as well. Reported-by: NLinus Torvalds <torvalds@linux-foundation.org> Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Cc: Roland McGrath <roland@redhat.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Markus Metzger <markus.t.metzger@intel.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <20100325135413.938004390@chello.nl> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 07 12月, 2009 1 次提交
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由 OGAWA Hirofumi 提交于
At least, insn.c and inat.c is needed for kprobe for now. So, this compile those only if KPROBES is enabled. Signed-off-by: NOGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: Masami Hiramatsu <mhiramat@redhat.com> LKML-Reference: <878wdg8icq.fsf@devron.myhome.or.jp> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 13 10月, 2009 1 次提交
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由 Arjan van de Ven 提交于
The branch profiling creates very complex code for each if statement, to the point that gcc has trouble even analyzing something as simple as if (count > 5) count = 5; This then means that causing an error on code that gcc cannot analyze for copy_from_user() and co is not very productive. This patch excludes the strict copy checks in the case of branch profiling being enabled. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <20091006070452.5e1fc119@infradead.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 03 10月, 2009 1 次提交
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由 Arjan van de Ven 提交于
For automated testing it is useful to have the option to turn the warnings on copy_from_user() etc checks into errors: In function ‘copy_from_user’, inlined from ‘fd_copyin’ at drivers/block/floppy.c:3080, inlined from ‘fd_ioctl’ at drivers/block/floppy.c:3503: linux/arch/x86/include/asm/uaccess_32.h:213: error: call to ‘copy_from_user_overflow’ declared with attribute error: copy_from_user buffer size is not provably correct Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <20091002075050.4e9f7641@infradead.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 27 8月, 2009 1 次提交
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由 Masami Hiramatsu 提交于
Add a user-space selftest of x86 instruction decoder at kernel build time. When CONFIG_X86_DECODER_SELFTEST=y, Kbuild builds a test harness of x86 instruction decoder and performs it after building vmlinux. The test compares the results of objdump and x86 instruction decoder code and check there are no differences. Signed-off-by: NMasami Hiramatsu <mhiramat@redhat.com> Signed-off-by: NJim Keniston <jkenisto@us.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Avi Kivity <avi@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jason Baron <jbaron@redhat.com> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Przemysław Pawełczyk <przemyslaw@pawelczyk.it> Cc: Roland McGrath <roland@redhat.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Vegard Nossum <vegard.nossum@gmail.com> LKML-Reference: <20090813203421.31965.29006.stgit@localhost.localdomain> Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com>
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- 15 6月, 2009 2 次提交
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由 Pekka Enberg 提交于
The Kconfig options of kmemcheck are hidden under arch/x86 which makes porting to other architectures harder. To fix that, move the Kconfig bits to lib/Kconfig.kmemcheck and introduce a CONFIG_HAVE_ARCH_KMEMCHECK config option that architectures can define. Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi> [rebased for mainline inclusion] Signed-off-by: NVegard Nossum <vegard.nossum@gmail.com>
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由 Vegard Nossum 提交于
let it rip! Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: NIngo Molnar <mingo@elte.hu> [rebased for mainline inclusion] Signed-off-by: NVegard Nossum <vegardno@ifi.uio.no>
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- 28 5月, 2009 1 次提交
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由 Joerg Roedel 提交于
This Kconfig option is intended to enable various code paths or parameters in IOMMU implementations to stress test the code and/or the hardware. This can also be done by disabling optimizations in the code when this option is switched on. Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
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- 15 4月, 2009 1 次提交
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由 FUJITA Tomonori 提交于
IOMMU_LEAK, GART's own feature, dumps the used IOMMU entries when IOMMU entries is full, which might be useful to find a bad driver that eats IOMMU entries. DMA_API_DEBUG provides the similar feature, debug_dma_dump_mappings, and it's better than GART's IOMMU_LEAK feature. GART's IOMMU_LEAK feature doesn't say who uses IOMMU entries so it's hard to find a bad driver. This patch reimplements the GART's IOMMU_LEAK feature by using DMA_API_DEBUG. Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: NJoerg Roedel <joerg.roedel@amd.com> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <1239669799-23579-2-git-send-email-fujita.tomonori@lab.ntt.co.jp> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 03 4月, 2009 1 次提交
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由 Akinobu Mita 提交于
This fixes a build failure with generic debug pagealloc: mm/debug-pagealloc.c: In function 'set_page_poison': mm/debug-pagealloc.c:8: error: 'struct page' has no member named 'debug_flags' mm/debug-pagealloc.c: In function 'clear_page_poison': mm/debug-pagealloc.c:13: error: 'struct page' has no member named 'debug_flags' mm/debug-pagealloc.c: In function 'page_poison': mm/debug-pagealloc.c:18: error: 'struct page' has no member named 'debug_flags' mm/debug-pagealloc.c: At top level: mm/debug-pagealloc.c:120: error: redefinition of 'kernel_map_pages' include/linux/mm.h:1278: error: previous definition of 'kernel_map_pages' was here mm/debug-pagealloc.c: In function 'kernel_map_pages': mm/debug-pagealloc.c:122: error: 'debug_pagealloc_enabled' undeclared (first use in this function) by fixing - debug_flags should be in struct page - define DEBUG_PAGEALLOC config option for all architectures Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com> Reported-by: NAlexander Beregalov <a.beregalov@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 01 4月, 2009 1 次提交
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由 Akinobu Mita 提交于
CONFIG_DEBUG_PAGEALLOC is now supported by x86, powerpc, sparc64, and s390. This patch implements it for the rest of the architectures by filling the pages with poison byte patterns after free_pages() and verifying the poison patterns before alloc_pages(). This generic one cannot detect invalid page accesses immediately but invalid read access may cause invalid dereference by poisoned memory and invalid write access can be detected after a long delay. Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 13 3月, 2009 1 次提交
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由 Markus Metzger 提交于
Perform a selftest of branch trace store when a cpu is initialized. WARN and disable branch trace store support if the selftest fails. Signed-off-by: NMarkus Metzger <markus.t.metzger@intel.com> LKML-Reference: <20090313104507.A30125@sedona.ch.intel.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 16 2月, 2009 1 次提交
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由 Pekka Paalanen 提交于
Impact: cosmetic change in Kconfig menu layout This patch was originally suggested by Peter Zijlstra, but seems it was forgotten. CONFIG_MMIOTRACE and CONFIG_MMIOTRACE_TEST were selectable directly under the Kernel hacking / debugging menu in the kernel configuration system. They were present only for x86 and x86_64. Other tracers that use the ftrace tracing framework are in their own sub-menu. This patch moves the mmiotrace configuration options there. Since the Kconfig file, where the tracer menu is, is not architecture specific, HAVE_MMIOTRACE_SUPPORT is introduced and provided only by x86/x86_64. CONFIG_MMIOTRACE now depends on it. Signed-off-by: NPekka Paalanen <pq@iki.fi> Signed-off-by: NSteven Rostedt <srostedt@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 06 2月, 2009 1 次提交
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由 Ingo Molnar 提交于
- Consistent alignment of help text - Use the ---help--- keyword everywhere consistently as a visual separator - fix whitespace mismatches Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 29 1月, 2009 1 次提交
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由 Ingo Molnar 提交于
The x86/Voyager subarch used to have this distinction between 'x86 SMP support' and 'Voyager SMP support': config X86_SMP bool depends on SMP && ((X86_32 && !X86_VOYAGER) || X86_64) This is a pointless distinction - Voyager can (and already does) use smp_ops to implement various SMP quirks it has - and it can be extended more to cover all the specialities of Voyager. So remove this complication in the Kconfig space. Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 11 1月, 2009 1 次提交
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由 Pekka Paalanen 提交于
Impact: cosmetic change in Kconfig menu layout This patch was originally suggested by Peter Zijlstra, but seems it was forgotten. CONFIG_MMIOTRACE and CONFIG_MMIOTRACE_TEST were selectable directly under the Kernel hacking / debugging menu in the kernel configuration system. They were present only for x86 and x86_64. Other tracers that use the ftrace tracing framework are in their own sub-menu. This patch moves the mmiotrace configuration options there. Since the Kconfig file, where the tracer menu is, is not architecture specific, HAVE_MMIOTRACE_SUPPORT is introduced and provided only by x86/x86_64. CONFIG_MMIOTRACE now depends on it. Signed-off-by: NPekka Paalanen <pq@iki.fi> Signed-off-by: NSteven Rostedt <srostedt@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 27 10月, 2008 1 次提交
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由 Pekka Paalanen 提交于
Impact: cleanup We can remove MMIOTRACE_HOOKS and replace it with just MMIOTRACE. MMIOTRACE_HOOKS is a remnant from the time when I thought that something else could also use the kmmio facilities. Signed-off-by: NPekka Paalanen <pq@iki.fi> Acked-by: NSteven Rostedt <rostedt@goodmis.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 24 10月, 2008 1 次提交
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由 Sitsofe Wheeler 提交于
Impact: clarify Kconfig help text The OPTIMIZE_INLINING help currently says "The gcc 4.x series have a rewritten inlining algorithm and disabling this option will generate a smaller kernel there." This contradicts other parts of the help text and my own tests: 5463127 2008-10-11 19:51 vmlinux.no-opt 5456152 2008-10-11 19:56 vmlinux.opt Reword text to say that enabling OPTIMIZE_INLINING will lead to smaller kernels with gcc 4.x or later. Signed-off-by: NSitsofe Wheeler <sitsofe@yahoo.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 22 10月, 2008 1 次提交
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由 Nick Piggin 提交于
DIRECT_GBPAGES was under DEBUG_KERNEL && EXPERIMENTAL and disabled by default. Turn it on by default and put it under EMBEDDED. Signed-off-by: NNick Piggin <npiggin@suse.de> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 26 7月, 2008 2 次提交
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由 Ingo Molnar 提交于
fix: arch/x86/kernel/built-in.o: In function `nvidia_set_debug_port': early_printk.c:(.text+0xf8b1): undefined reference to `read_pci_config' early_printk.c:(.text+0xf8dc): undefined reference to `write_pci_config' arch/x86/kernel/built-in.o: In function `setup_early_printk': early_printk.c:(.init.text+0x5487): undefined reference to `early_pci_allowed' early_printk.c:(.init.text+0x54cb): undefined reference to `read_pci_config' early_printk.c:(.init.text+0x54ec): undefined reference to `read_pci_config_16' [...] Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Yinghai Lu 提交于
based on work from Eric, and add some timeout so don't dead loop when debug device is not installed v2: fix checkpatch warning v3: move ehci struct def to linux/usrb/ehci_def.h from host/ehci.h also add CONFIG_EARLY_PRINTK_DBGP to disable it by default v4: address comments from Ingo, seperate ehci reg def moving to another patch also add auto detect port that connect to debug device for Nvidia southbridge Signed-off-by: NYinghai Lu <yhlu.kernel@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: "Arjan van de Ven" <arjan@infradead.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: "Greg KH" <greg@kroah.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 22 7月, 2008 1 次提交
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由 Linus Torvalds 提交于
The message talked about "left on" when it meant to say disabled. Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 20 7月, 2008 1 次提交
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由 Ingo Molnar 提交于
From: Arjan van de Ven <arjan@infradead.org> Date: Sat, 19 Jul 2008 15:47:17 -0700 CONFIG_NONPROMISC_DEVMEM was a rather confusing name - but renaming it to CONFIG_PROMISC_DEVMEM causes problems on architectures that do not support this feature; this patch renames it to CONFIG_STRICT_DEVMEM, so that architectures can opt-in into it. ( the polarity of the option is still the same as it was originally; it needs to be for now to not break architectures that don't have the infastructure yet to support this feature) Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Cc: "V.Radhakrishnan" <rk@atr-labs.com> Signed-off-by: NIngo Molnar <mingo@elte.hu> ---
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- 18 7月, 2008 2 次提交
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由 Ingo Molnar 提交于
re-enable OPTIMIZE_INLINING more widely. Jeff Dike fixed the remaining outstanding issue in this commit: | commit 4f81c535 | Author: Jeff Dike <jdike@addtoit.com> | Date: Mon Jul 7 13:36:56 2008 -0400 | | [UML] fix gcc ICEs and unresolved externs [...] | This patch reintroduces unit-at-a-time for gcc >= 4.0, bringing back the | possibility of Uli's crash. If that happens, we'll debug it. it's still default-off and thus opt-in. Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Ingo Molnar 提交于
Linus observed: > The real bug is that we shouldn't have "double negatives", and > certainly not negative config options. Making that "promiscuous > /dev/mem" option a negated thing as a config option was bad. right ... lets rename this option. There should never be a negation in config options. [ that reminds me of CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER, but that is for another commit ;-) ] Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 15 7月, 2008 1 次提交
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由 Linus Torvalds 提交于
Even the help-text makes it clear that normal people shouldn't enable it. Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 08 7月, 2008 2 次提交
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由 Mike Travis 提交于
* Introduce a new PER_CPU macro called "EARLY_PER_CPU". This is used by some per_cpu variables that are initialized and accessed before there are per_cpu areas allocated. ["Early" in respect to per_cpu variables is "earlier than the per_cpu areas have been setup".] This patchset adds these new macros: DEFINE_EARLY_PER_CPU(_type, _name, _initvalue) EXPORT_EARLY_PER_CPU_SYMBOL(_name) DECLARE_EARLY_PER_CPU(_type, _name) early_per_cpu_ptr(_name) early_per_cpu_map(_name, _idx) early_per_cpu(_name, _cpu) The DEFINE macro defines the per_cpu variable as well as the early map and pointer. It also initializes the per_cpu variable and map elements to "_initvalue". The early_* macros provide access to the initial map (usually setup during system init) and the early pointer. This pointer is initialized to point to the early map but is then NULL'ed when the actual per_cpu areas are setup. After that the per_cpu variable is the correct access to the variable. The early_per_cpu() macro is not very efficient but does show how to access the variable if you have a function that can be called both "early" and "late". It tests the early ptr to be NULL, and if not then it's still valid. Otherwise, the per_cpu variable is used instead: #define early_per_cpu(_name, _cpu) \ (early_per_cpu_ptr(_name) ? \ early_per_cpu_ptr(_name)[_cpu] : \ per_cpu(_name, _cpu)) A better method is to actually check the pointer manually. In the case below, numa_set_node can be called both "early" and "late": void __cpuinit numa_set_node(int cpu, int node) { int *cpu_to_node_map = early_per_cpu_ptr(x86_cpu_to_node_map); if (cpu_to_node_map) cpu_to_node_map[cpu] = node; else per_cpu(x86_cpu_to_node_map, cpu) = node; } * Add a flag "arch_provides_topology_pointers" that indicates pointers to topology cpumask_t maps are available. Otherwise, use the function returning the cpumask_t value. This is useful if cpumask_t set size is very large to avoid copying data on to/off of the stack. * The coverage of CONFIG_DEBUG_PER_CPU_MAPS has been increased while the non-debug case has been optimized a bit. * Remove an unreferenced compiler warning in drivers/base/topology.c * Clean up #ifdef in setup.c For inclusion into sched-devel/latest tree. Based on: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git + sched-devel/latest .../mingo/linux-2.6-sched-devel.git Signed-off-by: NMike Travis <travis@sgi.com> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Yinghai Lu 提交于
v2: seperate "fix for compiling when MPPARSE is not set" to another patch make X86_MPPARSE to be selectable only when acpi is set and X86_MPPARSE will be set if acpi is not set. Signed-off-by: NYinghai Lu <yhlu.kernel@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Maciej W. Rozycki <macro@linux-mips.org> Cc: Len Brown <lenb@kernel.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 03 7月, 2008 1 次提交
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由 Ben Collins 提交于
This patch allows the disabling of decompression messages during x86 bootup. Signed-off-by: NBen Collins <ben.collins@canonical.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 06 6月, 2008 1 次提交
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由 Stefan Richter 提交于
Here is an attempt to translate the prompt and help text into something which is legible and, as a bonus, correct. Signed-off-by: NStefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 26 5月, 2008 1 次提交
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由 Ingo Molnar 提交于
also enable the rodata and nx tests. Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 25 5月, 2008 1 次提交
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由 Alexey Starikovskiy 提交于
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