- 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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- 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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- 24 5月, 2008 8 次提交
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由 Randy Dunlap 提交于
Don't try to build mmiotrace when CONFIG_PCI=n. next-20080416/kernel/trace/trace_mmiotrace.c: In function 'mmio_print_pcidev': next-20080416/kernel/trace/trace_mmiotrace.c:62: error: implicit declaration of function 'pci_dev_driver' Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Pekka Paalanen 提交于
Signed-off-by: NPekka Paalanen <pq@iki.fi> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Pekka Paalanen 提交于
here is a patch that makes mmiotrace work almost well within the tracing framework. The patch applies on top of my previous patch. I have my own output formatting in place now. Summary of changes: - fix the NULL dereference that was due to not calling tracing_reset() - add print_line() callback into struct tracer - implement print_line() for mmiotrace, producing up-to-spec text - add my output header, but that is not really called in the right place - rewrote the main structs in mmiotrace - added two new trace entry types: TRACE_MMIO_RW and TRACE_MMIO_MAP - made some functions in trace.c non-static - check current==NULL in tracing_generic_entry_update() - fix(?) comparison in trace_seq_printf() Things seem to work fine except a few issues. Markers (text lines injected into mmiotrace log) are missing, I did not feel hacking them in before we have variable length entries. My output header is printed only for 'trace' file, but not 'trace_pipe'. For some reason, despite my quick fix, iter->trace is NULL in print_trace_line() when called from 'trace_pipe' file, which means I don't get proper output formatting. I only tried by loading nouveau.ko, which just detects the card, and that is traced fine. I didn't try further. Map, two reads and unmap. Works perfectly. I am missing the information about overflows, I'd prefer to have a counter for lost events. I didn't try, but I guess currently there is no way of knowning when it overflows? So, not too far from being fully operational, it seems :-) And looking at the diffstat, there also is some 700-900 lines of user space code that just became obsolete. Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Pekka Paalanen 提交于
On Sat, 22 Mar 2008 13:07:47 +0100 Ingo Molnar <mingo@elte.hu> wrote: > > > i'd suggest the following: pull x86.git and sched-devel.git into a > > > single tree [the two will combine without rejects]. Then try to add a > > > kernel/tracing/trace_mmiotrace.c ftrace plugin. The trace_sysprof.c > > > plugin might be a good example. > > > > I did this and now I have mmiotrace enabled/disabled via the tracing > > framework (what do we call this, since ftrace is one of the tracers?). > > cool! could you send the patches for that? (even if they are not fully > functional yet) Patch attached in the end. Nice to see how much code disappeared. I tried to mark all the features I had to break with XXX-comments. Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Pekka Paalanen 提交于
Kconfig.debug, Makefile and testmmiotrace.c style fixes. Use real mutex instead of mutex. Fix failure path in register probe func. kmmio: RCU read-locked over single stepping. Generate mapping id's. Make mmio-mod.c built-in and rewrite its locking. Add debugfs file to enable/disable mmiotracing. kmmio: use irqsave spinlocks. Lots of cleanups in mmio-mod.c Marker file moved from /proc into debugfs. Call mmiotrace entrypoints directly from ioremap.c. Signed-off-by: NPekka Paalanen <pq@iki.fi> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Pekka Paalanen 提交于
The custom page fault handler list is replaced with a single function pointer. All related functions and variables are renamed for mmiotrace. Signed-off-by: NPekka Paalanen <pq@iki.fi> Cc: Christoph Hellwig <hch@infradead.org> Cc: Arjan van de Ven <arjan@infradead.org> Cc: pq@iki.fi Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Pekka Paalanen 提交于
Mmiotrace is a tool for trapping memory mapped IO (MMIO) accesses within the kernel. It is used for debugging and especially for reverse engineering evil binary drivers. Mmiotrace works by wrapping the ioremap family of kernel functions and marking the returned pages as not present. Access to the IO memory triggers a page fault, which will be handled by mmiotrace's custom page fault handler. This will single-step the faulted instruction with the MMIO page marked as present. Access logs are directed to user space via relay and debug_fs. This page fault approach is necessary, because binary drivers have readl/writel etc. calls inlined and therefore extremely difficult to trap with with e.g. kprobes. This patch depends on the custom page fault handlers patch. Signed-off-by: NPekka Paalanen <pq@iki.fi> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Pekka Paalanen 提交于
Provides kernel modules a way to register custom page fault handlers. On every page fault this will call a list of registered functions. The functions may handle the fault and force do_page_fault() to return immediately. This functionality is similar to the now removed page fault notifiers. Custom page fault handlers are used by debugging and reverse engineering tools. Mmiotrace is one such tool and a patch to add it into the tree will follow. The custom page fault handlers are called earlier in do_page_fault() than the page fault notifiers were. Signed-off-by: NPekka Paalanen <pq@iki.fi> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 01 5月, 2008 4 次提交
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由 Linus Torvalds 提交于
So Ingo finally did figure out why UML broke with this option: UML passes gcc the -fno-unit-at-a-time flag, and apparently that wreaks havoc with gcc's inlining. We could turn off -fno-unit-at-a-time for UML for gcc4+ (which is what x86 does), but there's bad blood about this whole option, and it does show that the thing is just fragile as heck. So let tempers cool, and disable the thing, and we can revisit the decision later. Cc: Adrian Bunk <bunk@kernel.org> Cc: David Miller <davem@davemloft.net> Acked-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ingo Molnar 提交于
Switch back to 8K stacks as the safer default. Out-of-memory situations are less problematic than silent and hard to debug stack corruption. Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Ingo Molnar 提交于
default to inline optimizing off. Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Ingo Molnar 提交于
Andrew noticed that OPTIMIZE_INLINING appeared in the toplevel menu - fix it. Reported-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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