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2009-05-04kbuild, modpost: fix unexpected non-allocatable warning with mipsSam Ravnborg
mips emit the following debug sections: .mdebug* and .pdr They were included in the check for non-allocatable section and caused modpost to warn. Manuel Lauss suggested to fix this by adding the relevant sections to the list of sections we do not check. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Reported-by: Manuel Lauss <mano@roarinelk.homelinux.net>
2009-05-04kbuild, modpost: fix "unexpected non-allocatable" warning with SUSE gccSam Ravnborg
Jean reported that he saw one warning for each module like the one below: WARNING: arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.o (.comment.SUSE.OPTs): unexpected non-allocatable section. The warning appeared with the improved version of the check of the flags in the sections. That check already ignored sections named ".comment" - but SUSE store additional info in the comment section and has named it in a SUSE specific way. Therefore modpost failed to ignore the section. The fix is to extend the pattern so we ignore all sections that start with the name ".comment.". Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Reported-by: Jean Delvare <khali@linux-fr.org> Tested-by: Jean Delvare <khali@linux-fr.org>
2009-05-04kbuild, modpost: fix unexpected non-allocatable section when cross compilingAnders Kaseorg
The missing TO_NATIVE(sechdrs[i].sh_flags) was causing many unexpected non-allocatable section warnings when cross-compiling for an architecture with a different endianness. Fix endianness of all the fields in the ELF header and section headers, not just some of them so we are not hit by this anohter time. Signed-off-by: Anders Kaseorg <andersk@mit.edu> Reported-by: Sean MacLennan <smaclennan@pikatech.com> Tested-by: Sean MacLennan <smaclennan@pikatech.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-05-02Move dtc and libfdt sources from arch/powerpc/boot to scripts/dtcDavid Gibson
The powerpc kernel always requires an Open Firmware like device tree to supply device information. On systems without OF, this comes from a flattened device tree blob. This blob is usually generated by dtc, a tool which compiles a text description of the device tree into the flattened format used by the kernel. Sometimes, the bootwrapper makes small changes to the pre-compiled device tree blob (e.g. filling in the size of RAM). To do this it uses the libfdt library. Because these are only used on powerpc, the code for both these tools is included under arch/powerpc/boot (these were imported and are periodically updated from the upstream dtc tree). However, the microblaze architecture, currently being prepared for merging to mainline also uses dtc to produce device tree blobs. A few other archs have also mentioned some interest in using dtc. Therefore, this patch moves dtc and libfdt from arch/powerpc into scripts, where it can be used by any architecture. The vast bulk of this patch is a literal move, the rest is adjusting the various Makefiles to use dtc and libfdt correctly from their new locations. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-02Merge branch 'master' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes: kbuild, modpost: Check the section flags, to catch missing "ax"/"aw" kbuild: fix comment in modpost.c kbuild: fix scripts/setlocalversion with git kbuild: fix Module.markers permission error under cygwin docs: also clean index.html kbuild: remove a tag file before it is regenerated kbuild: "make prepare" should be "make modules_prepare" kbuild: clean Module.markers and modules.order for out-of-tree modules avr32: drop unused CLEAN_FILES
2009-05-02kernel-doc: restrict syntax for private: and public:Randy Dunlap
scripts/kernel-doc can (incorrectly) delete struct members that are surrounded by /* ... */ <struct members> /* ... */ if there is a /* private: */ comment in there somewhere also. Fix that by making the "/* private:" only allow whitespace between /* and "private:", not anything/everything in the world. This fixes some erroneous kernel-doc warnings that popped up while processing include/linux/usb/composite.h. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-01kbuild, modpost: Check the section flags, to catch missing "ax"/"aw"Anders Kaseorg
When you put .section ".foo" in an assembly file instead of .section "foo", "ax" , one of the possible symptoms is that modpost will see an ld-generated section name ".foo.1" in section_rel() or section_rela(). But this heuristic has two problems: it will miss a bad section that has no relocations, and it will incorrectly flag many gcc-generated sections as bad when compiling with -ffunction-sections -fdata-sections. On mips it fixes a lot of bogus warnings with gcc 4.4.0 lije this one: WARNING: crypto/cryptd.o (.text.T.349): unexpected section name. So instead of checking whether the section name matches a particular pattern, we directly check for a missing SHF_ALLOC in the section flags. Signed-off-by: Anders Kaseorg <andersk@mit.edu> Tested-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-05-01kbuild: fix comment in modpost.cSam Ravnborg
There is some confusion on naming of the head section. Correct naming is .head.text. Fix comment so we use correct naming. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-05-01kbuild: fix scripts/setlocalversion with gitNico Schottelius
When using trees like wireless-testing, which have untagged tags, scripts/setlocalversion does not display any git indication for localversion. This patch fixes it: If git is available, but no usable tag is found, it uses -g${head}. It skips the detection of unanottated tags via git name-rev. Signed-off-by: Nico Schottelius <nico@ikn.schottelius.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-05-01kbuild: fix Module.markers permission error under cygwinCedric Hombourger
While building the kernel, we end-up calling modpost with -K and -M options for the same file (Modules.markers). This is resulting in modpost's main function calling read_markers() and then write_markers() on the same file. We then have read_markers() mmap'ing the file, and writer_markers() opening that same file for writing. The issue is that read_markers() exits without munmap'ing the file and is as a matter holding a reference on Modules.markers. When write_markers() is opening that very same file for writing, we still have a reference on it and cygwin (Windows?) is then making fopen() fail with EPERM. Calling release_file() before exiting read_markers() clears that reference (and memory leak) and fopen() then succeeds. Tested on both cygwin (1.3.22) and Linux. Also ran modpost within valgrind on Linux to make sure that the munmap'ed file was not accessed after read_markers() Signed-off-by: Cedric Hombourger <chombourger@gmail.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-05-01kbuild: remove a tag file before it is regeneratedMatt Kraai
If a tag file is not removed before it is regenerated, the newly generated data is appended to the old, which preserves stale data and makes the tag file grow over time. Signed-off-by: Matt Kraai <kraai@ftbfs.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-04-27Remove unused support code for refok sections.Tim Abbott
The old refok sections .text.init.refok .data.init.refok .exit.text.refok have been deprecated since commit 312b1485fb509c9bc32eda28ad29537896658cb8. After the other patches in this patch series nothing is put in these sections, so clean things up by eliminating all the remaining references to them. Signed-off-by: Tim Abbott <tabbott@mit.edu> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-19kbuild: introduce subdir-ccflags-ySam Ravnborg
Following patch introduce support for setting options to gcc that has effect for current directory and all subdirectories. The typical use case are an architecture or a subsystem that decide to cover all files with -Werror. Today alpha, mips and sparc uses -Werror in almost all their Makefile- with subdir-ccflag-y it is now simpler to do so as only the top-level directories needs to be covered. Likewise if we decide to cover a full subsystem such as net/ with -Werror this is done by adding a single line to net/Makefile. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de>
2009-04-13Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixesLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes: docbook: make cleandocs kbuild: fix spurious initramfs rebuild Documentation: explain the difference between __bitwise and __bitwise__ kbuild: make it possible for the linker to discard local symbols from vmlinux kbuild: remove pointless strdup() on arguments passed to new_module() in modpost kbuild: fix a few typos in top-level Makefile kbuild: introduce destination-y for exported headers kbuild: use git svn instead of git-svn in setlocalversion kconfig: fix update-po-config to accect backslash in input kbuild: fix option processing for -I in headerdep
2009-04-13Merge branch 'gm_20090410' of git://repo.or.cz/linux-2.6/trivial-modsLinus Torvalds
* 'gm_20090410' of git://repo.or.cz/linux-2.6/trivial-mods: MAINTAINERS - Update MN10300 patterns MAINTAINERS - Update frv arch patterns scripts/get_maintainer.pl - Allow multiple files on command line MAINTAINERS - Update Freescale sound patterns MAINTAINERS - Add additional patterns MAINTAINERS - Add missing "/" to some pattern directories MAINTAINERS - Update DRIVER CORE patterns MAINTAINERS - Update M68K patterns MAINTAINERS - Coalesce sections "DVB" and "Video for Linux" MAINTAINERS - Remove cyblafb frame buffer no longer in tree MAINTAINERS - Remove x86/Voyager no longer in tree MAINTAINERS - Update FPU Emulator contact address and web page MAINTAINERS - i2c_tiny_usb T: should be W: MAINTAINERS - Add Linus Torvalds' git MAINTAINERS - standardize "T: git urls" MAINTAINERS - Remove HP Fibre Channel HBA no longer in tree MAINTAINERS - Standardize style MAINTAINERS - Add file patterns Add scripts/get_maintainer.pl Acked-by: Pavel Machek <pavel@ucw.cz> Acked-by: Andrew Morton <akpm@linux-foundation.org>
2009-04-11kbuild: fix spurious initramfs rebuildMaxime Bizon
When gen_initramfs_list is used to generate make dependencies, it includes symbolic links, for which make tracks the link target. Any change to that target will cause an initramfs rebuild, even if the symlink points to something outside of the initramfs directory. If the target happens to be /tmp, the rebuild occurs for each kernel build, since gen_initramfs_list uses mktemp... Proposed way to fix it is to omit symbolic links from generated dependencies, but this has a small drawback: changing perm/owner on a symlink will go unnoticed. Signed-off-by: Maxime Bizon <mbizon@freebox.fr> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-04-11kbuild: remove pointless strdup() on arguments passed to new_module() in modpostJan Beulich
new_module() itself already calls strdup() on its modname parameter. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-04-11kbuild: introduce destination-y for exported headersSam Ravnborg
xtensa and arm have asked for a possibility to export headers and locate them in a specific directory when exported. Introduce destiantion-y to support this. This patch in additiona adds some limited documentation for the variables used for exported headers. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Oskar Schirmer <os@emlix.com> Cc: Mikael Starvik <mikael.starvik@axis.com>
2009-04-11kbuild: use git svn instead of git-svn in setlocalversionPeter Korsgaard
Use the correct git <subcmd> syntax instead of the deprecated git-<subcmd>. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-04-11kconfig: fix update-po-config to accect backslash in inputSam Ravnborg
Massimo Maiurana reported (slightly edited): ===== In latest 2.6.29 "make update-po-config" fails at msguniq invocation with an "invalid control sequence" error. The offending string is the following, and it's located in drivers/staging/panel/Kconfig:72: "'\e[L' which are specific to the LCD, and a few ANSI codes. The" looks to me like gettext expects strings in printf format, so in this case it thinks "\e" is a control sequence but doesn't recognise it as a valid one. A valid solution would be to tell kxgettext to automatically escape this kind of strings in the */config.pot he produces, so that msguniq would not complain. ===== This patch implements the suggested escaping. Reported-by: Massimo Maiurana <maiurana@gmail.com> Tested-by: Massimo Maiurana <maiurana@gmail.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-04-11kbuild: fix option processing for -I in headerdepUwe Kleine-König
-I takes an argument. Without this change only a 1 is added to @opt_include which is not helpful. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Vegard Nossum <vegard.nossum@gmail.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-04-10scripts/get_maintainer.pl - Allow multiple files on command lineJoe Perches
Improve handling of "by:" signoffs Sorting and frequency checks are done by name/email, not by "by:" tag. Signed-off-by: Joe Perches <joe@perches.com>
2009-04-10Add scripts/get_maintainer.plJoe Perches
A script to parse file pattern information in MAINTAINERS and return selected information about a file or patch usage: scripts/get_maintainer.pl [options] patchfile scripts/get_maintainer.pl [options] -f file version: 0.14 MAINTAINERS field selection options: --email => print email address(es) if any --git => include git "*-by:" signers in commit count order --git-chief-penguins => include (Linus Torvalds) --git-min-signatures => number of signatures required (default: 1) --git-max-maintainers => maximum maintainers to add (default: 5) --git-since => git history to use (default: 1-year-ago) --m => include maintainer(s) if any --n => include name 'Full Name <addr@domain.tld>' --l => include list(s) if any --s => include subscriber only list(s) if any --scm => print SCM tree(s) if any --status => print status if any --subsystem => print subsystem name if any --web => print website(s) if any Output type options: --separator [, ] => separator for multiple entries on 1 line --multiline => print 1 entry per line Default options: [--email --git --m --n --l --multiline] Other options: --version => show version --help => show this help information Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Pavel Machek <pavel@ucw.cz>
2009-04-10Merge git://git.infradead.org/~dwmw2/firmware-2.6Linus Torvalds
* git://git.infradead.org/~dwmw2/firmware-2.6: qla1280: Fix off-by-some error in firmware loading. Add README.AddingFirmware file. Basically telling people not to. firmware: Remove newly-added slicoss and sxg firmware images firmware/WHENCE: Add missing origin information for Ambassador atmsar11.fw ALSA: wavefront - Always use request_firmware() Remove fdump tool for av7110 firmware firmware: convert av7110 driver to request_firmware() Partially revert "V4L/DVB (9533): cx88: Add support for TurboSight TBS8910 DVB-S PCI card" Revert "fix modules_install via NFS" Add-add conflicts in firmware/WHENCE fixed manually
2009-04-07Merge branch 'tracing-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: branch tracer, intel-iommu: fix build with CONFIG_BRANCH_TRACER=y branch tracer: Fix for enabling branch profiling makes sparse unusable ftrace: Correct a text align for event format output Update /debug/tracing/README tracing/ftrace: alloc the started cpumask for the trace file tracing, x86: remove duplicated #include ftrace: Add check of sched_stopped for probe_sched_wakeup function-graph: add proper initialization for init task tracing/ftrace: fix missing include string.h tracing: fix incorrect return type of ns2usecs() tracing: remove CALLER_ADDR2 from wakeup tracer blktrace: fix pdu_len when tracing packet command requests blktrace: small cleanup in blk_msg_write() blktrace: NUL-terminate user space messages tracing: move scripts/trace/power.pl to scripts/tracing/power.pl
2009-04-06Revert "fix modules_install via NFS"David Woodhouse
This reverts commit 8b249b6856f16f09b0e5b79ce5f4d435e439b9d6. This 'fix' is not necessary; we just need to undo the damage caused accidentally by Igor/Mauro in 4b29631db33292d416dc395c56122ea865e7635c ("V4L/DVB (9533): cx88: Add support for TurboSight TBS8910 DVB-S PCI card") Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-04-05Merge branch 'tracing-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (413 commits) tracing, net: fix net tree and tracing tree merge interaction tracing, powerpc: fix powerpc tree and tracing tree interaction ring-buffer: do not remove reader page from list on ring buffer free function-graph: allow unregistering twice trace: make argument 'mem' of trace_seq_putmem() const tracing: add missing 'extern' keywords to trace_output.h tracing: provide trace_seq_reserve() blktrace: print out BLK_TN_MESSAGE properly blktrace: extract duplidate code blktrace: fix memory leak when freeing struct blk_io_trace blktrace: fix blk_probes_ref chaos blktrace: make classic output more classic blktrace: fix off-by-one bug blktrace: fix the original blktrace blktrace: fix a race when creating blk_tree_root in debugfs blktrace: fix timestamp in binary output tracing, Text Edit Lock: cleanup tracing: filter fix for TRACE_EVENT_FORMAT events ftrace: Using FTRACE_WARN_ON() to check "freed record" in ftrace_release() x86: kretprobe-booster interrupt emulation code fix ... Fix up trivial conflicts in arch/parisc/include/asm/ftrace.h include/linux/memory.h kernel/extable.c kernel/module.c
2009-04-05Merge ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-module-and-param * git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-module-and-param: module: use strstarts() strstarts: helper function for !strncmp(str, prefix, strlen(prefix)) arm: allow usage of string functions in linux/string.h module: don't use stop_machine on module load module: create a request_module_nowait() module: include other structures in module version check module: remove the SHF_ALLOC flag on the __versions section. module: clarify the force-loading taint message. module: Export symbols needed for Ksplice Ksplice: Add functions for walking kallsyms symbols module: remove module_text_address() module: __module_address module: Make find_symbol return a struct kernel_symbol kernel/module.c: fix an unused goto label param: fix charp parameters set via sysfs Fix trivial conflicts in kernel/extable.c manually.
2009-04-02parisc: fix "make tar-pkg"Helge Deller
Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
2009-04-02Merge branch 'tracing/core-v2' into tracing-for-linusIngo Molnar
Conflicts: include/linux/slub_def.h lib/Kconfig.debug mm/slob.c mm/slub.c
2009-04-01tracing: move scripts/trace/power.pl to scripts/tracing/power.plLai Jiangshan
Impact: Cleanup We use scripts/tracing/ to contain tracing scripts. Use one directory only instead of two. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Steven Rostedt <srostedt@redhat.com> LKML-Reference: <49D06B9C.3070209@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-31module: include other structures in module version checkRusty Russell
With CONFIG_MODVERSIONS, we version 'struct module' using a dummy export, but other things matter too: 1) 'struct modversion_info' determines the layout of the __versions section, 2) 'struct kernel_param' determines the layout of the __params section, 3) 'struct kernel_symbol' determines __ksymtab*. 4) 'struct marker' determines __markers. 5) 'struct tracepoint' determines __tracepoints. So we rename 'struct_module' to 'module_layout' and include these in the signature. Now it's general we can add others later on without confusion. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-03-27Merge branch 'core/percpu' into percpu-cpumask-x86-for-linus-2Ingo Molnar
Conflicts: arch/parisc/kernel/irq.c arch/x86/include/asm/fixmap_64.h arch/x86/include/asm/setup.h kernel/irq/handle.c Semantic merge: arch/x86/include/asm/fixmap.h Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-26Merge branch 'header-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'header-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (50 commits) x86: headers cleanup - setup.h emu101k1.h: fix duplicate include of <linux/types.h> compiler-gcc4: conditionalize #error on __KERNEL__ remove __KERNEL_STRICT_NAMES make netfilter use strict integer types make drm headers use strict integer types make MTD headers use strict integer types make most exported headers use strict integer types make exported headers use strict posix types unconditionally include asm/types.h from linux/types.h make linux/types.h as assembly safe Neither asm/types.h nor linux/types.h is required for arch/ia64/include/asm/fpu.h headers_check fix cleanup: linux/reiserfs_fs.h headers_check fix cleanup: linux/nubus.h headers_check fix cleanup: linux/coda_psdev.h headers_check fix: x86, setup.h headers_check fix: x86, prctl.h headers_check fix: linux/reinserfs_fs.h headers_check fix: linux/socket.h headers_check fix: linux/nubus.h ... Manually fix trivial conflicts in: include/linux/netfilter/xt_limit.h include/linux/netfilter/xt_statistic.h
2009-03-26Merge commit 'v2.6.29' into core/header-fixesIngo Molnar
2009-03-24dynamic debug: combine dprintk and dynamic printkJason Baron
This patch combines Greg Bank's dprintk() work with the existing dynamic printk patchset, we are now calling it 'dynamic debug'. The new feature of this patchset is a richer /debugfs control file interface, (an example output from my system is at the bottom), which allows fined grained control over the the debug output. The output can be controlled by function, file, module, format string, and line number. for example, enabled all debug messages in module 'nf_conntrack': echo -n 'module nf_conntrack +p' > /mnt/debugfs/dynamic_debug/control to disable them: echo -n 'module nf_conntrack -p' > /mnt/debugfs/dynamic_debug/control A further explanation can be found in the documentation patch. Signed-off-by: Greg Banks <gnb@sgi.com> Signed-off-by: Jason Baron <jbaron@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-03-24platform: introduce module id table for platform devicesEric Miao
Now platform_device is being widely used on SoC processors where the peripherals are attached to the system bus, which is simple enough. However, silicon IPs for these SoCs are usually shared heavily across a family of processors, even products from different companies. This makes the original simple driver name based matching insufficient, or simply not straight-forward. Introduce a module id table for platform devices, and makes it clear that a platform driver is able to support some shared IP and handle slight differences across different platforms (by 'driver_data'). Module alias is handled automatically when a MODULE_DEVICE_TABLE() is defined. To not disturb the current platform drivers too much, the matched id entry is recorded and can be retrieved by platform_get_device_id(). Signed-off-by: Eric Miao <eric.miao@marvell.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-03-15kconfig: improve seed in randconfigIngo Molnar
'make randconfig' uses glibc's rand function, and the seed of that PRNG is set via: srand(time(NULL)); But 'time()' only increases once every second - freezing the randconfig result within a single second. My Nehalem testbox does randconfig much faster than 1 second and i have a few scripts that do 'randconfig until condition X' loops. Those scripts currently waste a lot of CPU time due to randconfig changing its seed only once per second currently. Change the seed to be micrseconds based. (I checked the statistical spread of the seed - the now.tv_sec*now.tv_usec multiplication there further improves it.) Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Roman Zippel <zippel@linux-m68k.org> [sam: fix for systems where usec is zero - noticed by Geert Uytterhoeven] Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-03-15kconfig: fix randconfig for choice blocksSam Ravnborg
Ingo Molnar reported that 'make randconfig' was not covering choice blocks properly, resulting in certain config options being left out of randconfig testing altogether. With the following patch we: - properly randomize choice value for normal choice blocks - properly randomize for multi choice blocks - added several comments to explain what is going on The root cause of the bug was that SYMBOL_VALID was set on the symbol representing the choice block so clearing this did the trick initially. But testign revealed a few more issues that is now fixed. Reported-by: Ingo Molnar <mingo@elte.hu> Cc: Ingo Molnar <mingo@elte.hu> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-03-14kallsyms, tracing: output more proper symbol nameLai Jiangshan
Impact: bugfix, output more reliable symbol lookup result Debug tools(dump_stack(), ftrace...) are like to print out symbols. But it is always print out the first aliased symbol.(Aliased symbols are symbols with the same address), and the first aliased symbol is sometime not proper. # echo function_graph > current_tracer # cat trace ...... 1) 1.923 us | select_nohz_load_balancer(); 1) + 76.692 us | } 1) | default_idle() { 1) ==========> | __irqentry_text_start() { 1) 0.000 us | native_apic_mem_write(); 1) | irq_enter() { 1) 0.000 us | idle_cpu(); 1) | tick_check_idle() { 1) 0.000 us | tick_check_oneshot_broadcast(); 1) | tick_nohz_stop_idle() { ...... It's very embarrassing, it ouputs "__irqentry_text_start()", actually, it should output "smp_apic_timer_interrupt()". (these two symbol are the same address, but "__irqentry_text_start" is deemed to the first aliased symbol by scripts/kallsyms) This patch puts symbols like "__irqentry_text_start" to the second aliased symbols. And a more proper symbol name becomes the first. Aliased symbols mostly come from linker script. The solution is guessing "is this symbol defined in linker script", the symbols defined in linker script will not become the first aliased symbol. And if symbols are found to be equal in this "linker script provided" criteria, symbols are sorted by the number of prefix underscores. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Paulo Marques <pmarques@grupopie.com> LKML-Reference: <49BA06E2.7080807@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-13Merge branch 'core/locking' into tracing/ftraceIngo Molnar
2009-03-07kbuild: fix 'make rpm' when CONFIG_LOCALVERSION_AUTO=y and using SCM treeJosh Hunt
Running 'make rpm' fails when CONFIG_LOCALVERSION_AUTO=y and using a kernel source tree under SCM. This is due to KERNELRELEASE being different when the initial make is run and when make is run from rpmbuild. mkspec creates kernel.spec using KERNELRELEASE: <mkspec> echo "%files" echo '%defattr (-, root, root)' echo "%dir /lib/modules" echo "/lib/modules/$KERNELRELEASE" echo "/lib/firmware" echo "/boot/*" echo "" </mkspec> When CONFIG_LOCALVERSION_AUTO=y scripts/setlocalversion is called and grabs any additional version info from SCM. Next, the srctree is tarred up and SCM information is excluded. rpmbuild reruns make and in the process generates a new include/config/kernel.release and thus a new KERNELRELEASE. However this time the SCM information is gone so KERNELRELEASE no longer has the additional version information. When "make modules_install" runs, it uses the new KERNELRELEASE value to determine where to install the modules. This conflicts with where the spec file assumes they are going because of the mis-matching KERNELRELEASE versions. <snippet> + INSTALL_MOD_PATH=/var/tmp/kernel-2.6.29rc4tip01479g5d85422-root + make -j16 modules_install INSTALL crypto/aead.ko INSTALL crypto/cbc.ko INSTALL crypto/chainiv.ko INSTALL crypto/crc32c.ko INSTALL crypto/crypto_algapi.ko INSTALL crypto/crypto_blkcipher.ko INSTALL crypto/crypto_hash.ko INSTALL crypto/cryptomgr.ko INSTALL crypto/ecb.ko INSTALL crypto/eseqiv.ko INSTALL crypto/krng.ko INSTALL crypto/md5.ko INSTALL crypto/pcbc.ko INSTALL crypto/rng.ko INSTALL drivers/block/cciss.ko INSTALL drivers/hid/hid-dummy.ko INSTALL drivers/scsi/iscsi_tcp.ko INSTALL drivers/scsi/libiscsi.ko INSTALL drivers/scsi/libiscsi_tcp.ko INSTALL drivers/scsi/scsi_transport_iscsi.ko INSTALL drivers/scsi/scsi_wait_scan.ko INSTALL fs/lockd/lockd.ko INSTALL fs/nfs/nfs.ko INSTALL fs/nfsd/nfsd.ko INSTALL lib/libcrc32c.ko INSTALL net/sunrpc/sunrpc.ko DEPMOD 2.6.29-rc4-tip + cp arch/x86/boot/bzImage /var/tmp/kernel-2.6.29rc4tip01479g5d85422-root/boot/vmlinuz-2.6.29-rc4-tip-01479-g5d85422 + cp System.map /var/tmp/kernel-2.6.29rc4tip01479g5d85422-root/boot/System.map-2.6.29-rc4-tip-01479-g5d85422 + cp .config /var/tmp/kernel-2.6.29rc4tip01479g5d85422-root/boot/config-2.6.29-rc4-tip-01479-g5d85422 + cp vmlinux vmlinux.orig + bzip2 -9 vmlinux + mv vmlinux.bz2 /var/tmp/kernel-2.6.29rc4tip01479g5d85422-root/boot/vmlinux-2.6.29-rc4-tip-01479-g5d85422.bz2 + mv vmlinux.orig vmlinux + /usr/lib/rpm/brp-compress Processing files: kernel-2.6.29rc4tip01479g5d85422-2 error: File not found: /var/tmp/kernel-2.6.29rc4tip01479g5d85422-root/lib/modules/2.6.29-rc4-tip-01479-g5d85422 RPM build errors: File not found: /var/tmp/kernel-2.6.29rc4tip01479g5d85422-root/lib/modules/2.6.29-rc4-tip-01479-g5d85422 make[1]: *** [rpm] Error 1 make: *** [rpm] Error 2 </snippet> I have tested this patch on git -tip, Linus' git tree, and the kernel.org tar files, both with and without CONFIG_LOCALVERSION_AUTO=y. Signed-off-by: Josh Hunt <josh@scalex86.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> ----
2009-03-07kbuild: fix mkspec to cleanup RPM_BUILD_ROOTJosh Hunt
The contents of the %clean section in mkspec is currently commented out leaving RPM_BUILD_ROOT and its contents on the build machine. This patch removes it once the rpm build process is complete. Signed-off-by: Josh Hunt <josh@scalex86.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-03-07kbuild: fix C libary confusion in unifdef.c due to getline()Justin P. Mattock
This fixes an error when compiling the kernel. CHK include/linux/version.h HOSTCC scripts/unifdef scripts/unifdef.c:209: error: conflicting types for 'getline' /usr/include/stdio.h:651: note: previous declaration of 'getline' was here make[1]: *** [scripts/unifdef] Error 1 make: *** [__headers] Error 2 Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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>
2009-03-04Merge branches 'x86/apic', 'x86/cpu', 'x86/fixmap', 'x86/mm', 'x86/sched', ↵Ingo Molnar
'x86/setup-lzma', 'x86/signal' and 'x86/urgent' into x86/core
2009-03-02Merge branches 'tracing/ftrace', 'tracing/mmiotrace' and 'linus' into ↵Ingo Molnar
tracing/core
2009-03-01Merge branch 'x86/urgent' into x86/patIngo Molnar
2009-02-27checkpatch: version 0.28Andy Whitcroft
Signed-off-by: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-27checkpatch: add __ref as a sparse modifierAndy Whitcroft
Add __ref as a sparse modifier. Signed-off-by: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>