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* perf evsel: Fix an issue where perf report fails to show the proper percentageNaveen N. Rao2012-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes an issue where perf report shows nan% for certain perf.data files. The below is from a report for a do_fork probe: -nan% sshd [kernel.kallsyms] [k] do_fork -nan% packagekitd [kernel.kallsyms] [k] do_fork -nan% dbus-daemon [kernel.kallsyms] [k] do_fork -nan% bash [kernel.kallsyms] [k] do_fork A git bisect shows commit f3bda2c as the cause. However, looking back through the git history, I saw commit 640c03c which seems to have removed the required initialization for perf_sample->period. The problem only started showing after commit f3bda2c. The below patch re-introduces the initialization and it fixes the problem for me. With the below patch, for the same perf.data: 73.08% bash [kernel.kallsyms] [k] do_fork 8.97% 11-dhclient [kernel.kallsyms] [k] do_fork 6.41% sshd [kernel.kallsyms] [k] do_fork 3.85% 20-chrony [kernel.kallsyms] [k] do_fork 2.56% sendmail [kernel.kallsyms] [k] do_fork This patch applies over current linux-tip commit 9949284. Problem introduced in: $ git describe 640c03c v2.6.37-rc3-83-g640c03c Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Robert Richter <robert.richter@amd.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: stable@kernel.org Link: http://lkml.kernel.org/r/20120203170113.5190.25558.stgit@localhost6.localdomain6 Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Fix prefix matching for kernel mapsJiri Olsa2012-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | In some perf ancient versions we used '[kernel.kallsyms._text]' as the name for the kernel map. This got changed with commit: perf: 'perf kvm' tool for monitoring guest performance from host commit a1645ce12adb6c9cc9e19d7695466204e3f017fe Author: Zhang, Yanmin <yanmin_zhang@linux.intel.com> and we started to use following name '[kernel.kallsyms]_text'. This name change is important for the report code dealing with ancient perf data. When processing the kernel map event, we need to recognize the old naming (dont match the last ']') and initialize the kernel map correctly. The subsequent call to maps__set_kallsyms_ref_reloc_sym deals with the superfluous ']' to get correct symbol name. Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1328461865-6127-1-git-send-email-jolsa@redhat.com Signed-off-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Fix perf stack to non executable on x86_64Jiri Olsa2012-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By adding following objects: bench/mem-memcpy-x86-64-asm.o the x86_64 perf binary ended up with executable stack. The reason was that above object are assembler sourced and is missing the GNU-stack note section. In such case the linker assumes that the final binary should not be restricted at all and mark the stack as RWX. Adding section ".note.GNU-stack" definition to mentioned object, with all flags disabled, thus omiting this object from linker stack flags decision. Problem introduced in: $ git describe ea7872b v2.6.37-rc2-19-gea7872b Reported-at: https://bugzilla.redhat.com/show_bug.cgi?id=783570 Reported-by: Clark Williams <williams@redhat.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: stable@kernel.org Link: http://lkml.kernel.org/r/1328100848-5630-1-git-send-email-jolsa@redhat.com Signed-off-by: Jiri Olsa <jolsa@redhat.com> [ committer note: Backported fix to perf/urgent (3.3-rc2+) ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf top: Fix number of samples displayedStephane Eranian2012-01-30
| | | | | | | | | | | | | | | | | | In recent versions of perf top, pressing the 'e' key to change the number of displayed samples had no effect. The number of samples was still dictated by the size of the terminal (stdio mode). That was quite annoying because typically only the first dozen samples really matter. This patch fixes this. Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20120130105037.GA5160@quad Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Fix strlen() bug in perf_event__synthesize_event_type()Stephane Eranian2012-01-30
| | | | | | | | | | | | | | | | | | The event_type record has a max length for the event name. It's called MAX_EVENT_NAME. The name may be truncated to fit the max length. But the header.size still reflects the original name length. If that length is > MAX_EVENT_NAME, then the header.size field is bogus. Fix this by using the length of the name after the potential truncation. Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20120120094912.GA4882@quad Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Fix broken build by defining _GNU_SOURCE in MakefileDavid Daney2012-01-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When building on my Debian/mips system, util/util.c fails to build because commit 1aed2671738785e8f5aea663a6fda91aa7ef59b5 (perf kvm: Do guest-only counting by default) indirectly includes stdio.h before the feature selection in util.h is done. This prevents _GNU_SOURCE in util.h from enabling the declaration of getline(), from now second inclusion of stdio.h, and the build is broken. There is another breakage in util/evsel.c caused by include ordering, but I didn't fully track down the commit that caused it. The root cause of all this is an inconsistent definition of _GNU_SOURCE, so I move the definition into the Makefile so that it is passed to all invocations of the compiler and used uniformly for all system header files. All other #define and #undef of _GNU_SOURCE are removed as they cause conflicts with the definition passed to the compiler. All the features.h definitions (_LARGEFILE64_SOURCE _FILE_OFFSET_BITS=64 and _GNU_SOURCE) are needed by the python glue code too, so they are moved to BASIC_CFLAGS, and the misleading comments about BASIC_CFLAGS are removed. This gives me a clean build on x86_64 (fc12) and mips (Debian). Cc: David Daney <david.daney@cavium.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Joerg Roedel <joerg.roedel@amd.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1326836461-11952-1-git-send-email-ddaney.cavm@gmail.com Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* Merge branch 'release' of ↵Linus Torvalds2012-01-18
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux This includes initial support for the recently published ACPI 5.0 spec. In particular, support for the "hardware-reduced" bit that eliminates the dependency on legacy hardware. APEI has patches resulting from testing on real hardware. Plus other random fixes. * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: (52 commits) acpi/apei/einj: Add extensions to EINJ from rev 5.0 of acpi spec intel_idle: Split up and provide per CPU initialization func ACPI processor: Remove unneeded variable passed by acpi_processor_hotadd_init V2 ACPI processor: Remove unneeded cpuidle_unregister_driver call intel idle: Make idle driver more robust intel_idle: Fix a cast to pointer from integer of different size warning in intel_idle ACPI: kernel-parameters.txt : Add intel_idle.max_cstate intel_idle: remove redundant local_irq_disable() call ACPI processor: Fix error path, also remove sysdev link ACPI: processor: fix acpi_get_cpuid for UP processor intel_idle: fix API misuse ACPI APEI: Convert atomicio routines ACPI: Export interfaces for ioremapping/iounmapping ACPI registers ACPI: Fix possible alignment issues with GAS 'address' references ACPI, ia64: Use SRAT table rev to use 8bit or 16/32bit PXM fields (ia64) ACPI, x86: Use SRAT table rev to use 8bit or 32bit PXM fields (x86/x86-64) ACPI: Store SRAT table revision ACPI, APEI, Resolve false conflict between ACPI NVS and APEI ACPI, Record ACPI NVS regions ACPI, APEI, EINJ, Refine the fix of resource conflict ...
| * Merge branches 'einj', 'intel_idle', 'misc', 'srat' and 'turbostat-ivb' into ↵Len Brown2012-01-18
| |\ | | | | | | | | | release
| | * tools turbostat: recognize and run properly on IVBLen Brown2011-11-18
| | | | | | | | | | | | Signed-off-by: Len Brown <len.brown@intel.com>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2012-01-16
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest: ktest: Add INGORE_ERRORS to ignore warnings in boot up ktest: Still do reboot even for REBOOT_TYPE = script ktest: Fix compare script to test if options are not documented ktest: Detect typos in option names ktest: Have all values be set by defaults ktest: Change initialization of defaults hash to perl format ktest: Add options SWITCH_TO_GOOD and SWITCH_TO_TEST ktest: Allow overriding bisect test results ktest: Evaluate options before processing them ktest: Evaluate $KERNEL_VERSION in both install and post install ktest: Only ask options needed for install ktest: When creating a new config, ask for BUILD_OPTIONS ktest: Do not ask for some options if the only test is build ktest: Ask for type of test when creating a new config ktest: Allow bisect test to restart where it left off ktest: When creating new config, allow the use of ${THIS_DIR} ktest: Add default for ssh-user, build-target and target-image ktest: Allow success logs to be stored ktest: Save test output
| * | | ktest: Add INGORE_ERRORS to ignore warnings in boot upSteven Rostedt2012-01-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When testing a kernel that has warnings, ktest.pl will fail the test when it sees the warning. If you need to test the the kernel and want to ignore the errors that are produced, the option IGNORE_ERRORS has been added. When IGNORE_ERRORS is set to something other than 0, it will ignore call traces due to WARN_ON(). Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ktest: Still do reboot even for REBOOT_TYPE = scriptSteven Rostedt2012-01-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The REBOOT_TYPE may be either grub or script, if it is script it is expected that a REBOOT_SCRIPT is defined. With the SWITCH_TO_TEST which is the complement of SWITCH_TO_GOOD, which does basically the same thing as REBOOT_SCRIPT and but for both grub and script, the REBOOT_SCRIPT does not need to be mandatory anymore. Do not require the REBOOT_SCRIPT and always run the reboot code for both grub and script. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ktest: Fix compare script to test if options are not documentedSteven Rostedt2011-12-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The compare script compare-ktest-sample.pl checks for options that are defined in ktest.pl and not documented in samples.conf, as well as samples in samples.conf that are not used in ktest.pl. With the switch to the hash format to initialize the ktest variables the compare script needs to be updated to handle the change. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ktest: Detect typos in option namesSteven Rostedt2011-12-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It becomes quite annoying when you go to run a test and then realize that you typed an option name wrong, and the test starts doing the default action and not what you expected it to do. It is even more annoying when you wake up the next day after running the test over night when you discover this. By testing if all options specified in a config file are used by either ktest or were used in one of the option's values we can see if there are any dangling options that were not used. In such a case, show the user the options that were not used and ask them if they want to continue or not. The option IGNORE_UNUSED was also added to allow the user to override this feature. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ktest: Have all values be set by defaultsSteven Rostedt2011-12-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently the patchcheck, bisect, and config_bisect variables are only able to be set per test. You can not set a default value for them. By letting default values be set, it makes some config files a bit easier, and also makes it easier to find typos in the option names. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ktest: Change initialization of defaults hash to perl formatSteven Rostedt2011-12-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Initializing each default value by specifying the hash name is ugly. This is one of the rare cases that the "perl way" is actually much cleaner and easier to read. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ktest: Add options SWITCH_TO_GOOD and SWITCH_TO_TESTSteven Rostedt2011-12-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For machines that do no use grub, it may be needed to update an external image (tftp) before doing a reboot into either the test image or the known good image. The option SWITCH_TO_GOOD is added, where if it is defined, the command that is specified as its value will be executed before doing a reboot into a known good image. The option SWITCH_TO_TEST is added, where if it is defined, the command that is specified as its value will be executed before doing a reboot into the test image. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ktest: Allow overriding bisect test resultsSteven Rostedt2011-12-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When running the ktest git bisect test, if the BISECT_TYPE is "test", the bisect is determined to be good or bad based off of the error code of the test that is run. Currently, if the test returns 0, it is considered a pass (good), a non-zero is considered a fail (bad). But it has been requested to add more options, and also change the meanings of the error codes of the test. For example, one may want the test to detect if the commit is not good or bad, (maybe the bisect came to a point where the code in question does not exist). The test could report an error code that should tell ktest to skip the commit. Also, a test could detect that something is horribly wrong and the biscet should just be aborted. The new options: BISECT_RET_GOOD BISECT_RET_BAD BISECT_RET_SKIP BISECT_RET_ABORT BISECT_RET_DEFAULT have been added. The first 4 take an integer value that will represent if the test should be considered a pass, fail, neither good nor bad, or abort respectively. The BISECT_RET_DEFAULT will bo whatever is not defined by the above codes. If only BISECT_RET_DEFAULT is defined, then all tests will do the default. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ktest: Evaluate options before processing themSteven Rostedt2011-12-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All options can take variables "${var}". Before doing any processing or decision making on the content of an option, evaluate it incase there are variables that may change the outcome. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ktest: Evaluate $KERNEL_VERSION in both install and post installSteven Rostedt2011-12-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The install process may also need to know what the kernel version is, to add it to the name. Evaluate it for both install and post install. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ktest: Only ask options needed for installSteven Rostedt2011-12-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If all the tests are only for build or install, do not ask for options not needed to do the install, if the options do not exist. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ktest: When creating a new config, ask for BUILD_OPTIONSSteven Rostedt2011-12-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When creating a new config, ask for the BUILD_OPTIONS variable that lets users add things like -j20 to the make. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ktest: Do not ask for some options if the only test is buildSteven Rostedt2011-12-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When creating a ktest config or if te config only has build only tests, some of the manditory config options are not needed. Do not ask for them if all tests in the config file are just build tests. Suggested-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ktest: Ask for type of test when creating a new configSteven Rostedt2011-12-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When no argument is supplied to ktest, or the config applied does not exist and a new config is being created, instead of just using the default test type, give the user an option to pick the test type of either 'build, install, or boot'. Other options may be added later but then those would require more questions as they require more fields. But that's for another release of ktest to add that feature. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ktest: Allow bisect test to restart where it left offSteven Rostedt2011-12-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a bisect is killed for some reason, have ktest detect that a bisect is in progress and if so, allow the user to start the bisect where it left off. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ktest: When creating new config, allow the use of ${THIS_DIR}Steven Rostedt2011-11-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Typing in a full path when you know that the path exists within the directory your are running is tedious and unnecessary. Allow the user to use ${PWD} if they want a dynamic path name which will be the path that ktest.pl is executed from or use ${THIS_DIR} which is a variable assigned `pwd` and the the variable will exist within the config, allowing the user to change it and affect all other paths using this variable as well Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ktest: Add default for ssh-user, build-target and target-imageSteven Rostedt2011-11-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a user runs ktest without an argument, or the argument given is not a config file that exists, ktest will ask the user a few questions to create a simple ktest config file. A few of the questions should have a default value set, that if anything it will make it easier for the user to know what is suppose to be in that value. These new values are: SSH_USER, BUILD_TARGET and TARGET_IMAGE Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ktest: Allow success logs to be storedRabin Vincent2011-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a STORE_SUCCESSES option, to allow success logs to be stored, for example to double-check or otherwise post-process the test logs. Link: http://lkml.kernel.org/r/1321616131-21352-3-git-send-email-rabin@rab.in Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ktest: Save test outputRabin Vincent2011-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The test output may contain useful information; save it along with the already-saved buildlog, dmesg, and .config. Link: http://lkml.kernel.org/r/1321616131-21352-1-git-send-email-rabin@rab.in Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | | | Merge branch 'perf-core-for-linus' of ↵Linus Torvalds2012-01-15
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (39 commits) perf tools: Fix compile error on x86_64 Ubuntu perf report: Fix --stdio output alignment when --showcpuutilization used perf annotate: Get rid of field_sep check perf annotate: Fix usage string perf kmem: Fix a memory leak perf kmem: Add missing closedir() calls perf top: Add error message for EMFILE perf test: Change type of '-v' option to INCR perf script: Add missing closedir() calls tracing: Fix compile error when static ftrace is enabled recordmcount: Fix handling of elf64 big-endian objects. perf tools: Add const.h to MANIFEST to make perf-tar-src-pkg work again perf tools: Add support for guest/host-only profiling perf kvm: Do guest-only counting by default perf top: Don't update total_period on process_sample perf hists: Stop using 'self' for struct hist_entry perf hists: Rename total_session to total_period x86: Add counter when debug stack is used with interrupts enabled x86: Allow NMIs to hit breakpoints in i386 x86: Keep current stack in NMI breakpoints ...
| * | | | perf tools: Fix compile error on x86_64 UbuntuNamhyung Kim2012-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ctype.h include is not needed here and it breaks build on some systems (at least 64bit Ubuntu 10.04) like below. Just get rid of it. CC util/trace-event-info.o cc1: warnings being treated as errors util/trace-event-info.c: In function ‘record_file’: util/trace-event-info.c:192: error: implicit declaration of function ‘pwrite’ util/trace-event-info.c:192: error: nested extern declaration of ‘pwrite’ make: *** [util/trace-event-info.o] Error 1 Cc: Ingo Molnar <mingo@elte.hu> Cc: Joerg Roedel <joerg.roedel@amd.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1326035430-7621-1-git-send-email-namhyung@gmail.com Signed-off-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | | perf report: Fix --stdio output alignment when --showcpuutilization usedNamhyung Kim2012-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current perf report output is broken if --showcpuutilization is used. Combination with -n and/or --show-total-period make things worse. This patch fixes it as follows: before: 48.25% 48.25% 0.00% sleep [kernel.kallsyms] [k] trace_hardirqs_off 34.99% 34.99% 0.00% sleep [kernel.kallsyms] [k] __find_get_block_slow 15.99% 15.99% 0.00% sleep [kernel.kallsyms] [k] lock_release_holdtime 0.77% 0.77% 0.00% sleep [kernel.kallsyms] [k] native_write_msr_safe after: 48.25% 48.25% 0.00% sleep [kernel.kallsyms] [k] trace_hardirqs_off 34.99% 34.99% 0.00% sleep [kernel.kallsyms] [k] __find_get_block_slow 15.99% 15.99% 0.00% sleep [kernel.kallsyms] [k] lock_release_holdtime 0.77% 0.77% 0.00% sleep [kernel.kallsyms] [k] native_write_msr_safe Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1325957132-10600-8-git-send-email-namhyung@gmail.com Signed-off-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | | perf annotate: Get rid of field_sep checkNamhyung Kim2012-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The 'field_sep' variable is not set anywhere. Just remove the conditional. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1325957132-10600-7-git-send-email-namhyung@gmail.com Signed-off-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | | perf annotate: Fix usage stringNamhyung Kim2012-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The annotate command doesn't take non-option arguments. In fact, it can take last argument as a symbol filter though, but that's a special case and, IMHO, it should be discouraged in favor of the -s option. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1325957132-10600-6-git-send-email-namhyung@gmail.com Signed-off-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | | perf kmem: Fix a memory leakNamhyung Kim2012-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The 'str' should be freed when sort_dimension__add() failed too. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1325957132-10600-5-git-send-email-namhyung@gmail.com Signed-off-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | | perf kmem: Add missing closedir() callsNamhyung Kim2012-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The setup_cpunode_map() calls opendir() but misses corresponding closedir(). Add them. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1325957132-10600-4-git-send-email-namhyung@gmail.com Signed-off-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | | perf top: Add error message for EMFILENamhyung Kim2012-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a user tries to open so many events, perf_event_open syscall may fail with EMFILE. Provide advise for that case. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1325957132-10600-3-git-send-email-namhyung@gmail.com Signed-off-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | | perf test: Change type of '-v' option to INCRNamhyung Kim2012-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The '-v' option is usually defined via OPT_INCR not _INTEGER. Follow the trend :). Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1325957132-10600-2-git-send-email-namhyung@gmail.com Signed-off-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | | perf script: Add missing closedir() callsNamhyung Kim2012-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The get_script_path() calls opendir() but misses corresponding closedir()'s. Add them. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1325957132-10600-1-git-send-email-namhyung@gmail.com Signed-off-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | | perf tools: Add const.h to MANIFEST to make perf-tar-src-pkg work againSebastian Andrzej Siewior2012-01-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes: |make: *** No rule to make target `../../include/linux/const.h', needed by `builtin-annotate.o'. Stop. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1324128938-17553-1-git-send-email-sebastian@breakpoint.cc Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | | perf tools: Add support for guest/host-only profilingJoerg Roedel2012-01-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To restrict a counter to either host or guest mode this patch introduces two new event modifiers: G and H. With G the counter is configured in guest-only mode and with H in host-only mode. Cc: Gleb Natapov <gleb@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Joerg Roedel <joro@8bytes.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Link: http://lkml.kernel.org/n/tip-or5aj3rghy9ngyg882z6kln9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | | perf kvm: Do guest-only counting by defaultJoerg Roedel2012-01-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make use of exclude_guest and exlude_host in perf-kvm to do only guest-only counting by default. Cc: Gleb Natapov <gleb@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Joerg Roedel <joro@8bytes.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> [ committer note: Moved perf_{guest,host} & event_attr_init to util.c ] [ so as not to drag more stuff to the python binding] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | | perf top: Don't update total_period on process_sampleArnaldo Carvalho de Melo2012-01-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It will be recalculated at __hists__output_resort, to take into account filters possibly applied by the TUI, etc. Since we do the percent math only for those entries that will appear on the TUI instead of for _all_ the entries at decay time, updating it for each sample makes the entries seem to decay faster when using the navigation keys (since the screen will be refreshed), as we're not coalescing the entries that are being batched to be merged at next resort/decay time, but considering their periods. Bug introduced in 743eb86. Reported-by: Ingo Molnar <mingo@elte.hu> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-k0d0rq9a8nqtkqohov8cir72@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | | perf hists: Stop using 'self' for struct hist_entryArnaldo Carvalho de Melo2012-01-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Stop using this python/OOP convention, doesn't really helps. Will do more from time to time till we get it cleaned up in all of /perf. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-me4dyj6s5snh7jr8wb9gzt82@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | | perf hists: Rename total_session to total_periodArnaldo Carvalho de Melo2012-01-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Nowadays we do it per evsel, not per session (that may have multiple evsels), so rename it to avoid confusion. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-azsgomr5h4dmaudoogw48w49@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | | | | Merge branch 'for-3.3' of git://linux-nfs.org/~bfields/linuxLinus Torvalds2012-01-14
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-3.3' of git://linux-nfs.org/~bfields/linux: (31 commits) nfsd4: nfsd4_create_clid_dir return value is unused NFSD: Change name of extended attribute containing junction svcrpc: don't revert to SVC_POOL_DEFAULT on nfsd shutdown svcrpc: fix double-free on shutdown of nfsd after changing pool mode nfsd4: be forgiving in the absence of the recovery directory nfsd4: fix spurious 4.1 post-reboot failures NFSD: forget_delegations should use list_for_each_entry_safe NFSD: Only reinitilize the recall_lru list under the recall lock nfsd4: initialize special stateid's at compile time NFSd: use network-namespace-aware cache registering routines SUNRPC: create svc_xprt in proper network namespace svcrpc: update outdated BKL comment nfsd41: allow non-reclaim open-by-fh's in 4.1 svcrpc: avoid memory-corruption on pool shutdown svcrpc: destroy server sockets all at once svcrpc: make svc_delete_xprt static nfsd: Fix oops when parsing a 0 length export nfsd4: Use kmemdup rather than duplicating its implementation nfsd4: add a separate (lockowner, inode) lookup nfsd4: fix CONFIG_NFSD_FAULT_INJECTION compile error ...
| * | | | | NFSD: Added fault injection scriptBryan Schumaker2011-11-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This script provides a convenient way to use the NFSD fault injection framework. Fault injection writes to dmesg using the KERN_INFO flag, so this script will compare the before and after output of `dmesg` to show the user what happened Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* | | | | | Merge branch 'akpm' (aka "Andrew's patch-bomb, take two")Linus Torvalds2012-01-12
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Andrew explains: - various misc stuff - Most of the rest of MM: memcg, threaded hugepages, others. - cpumask - kexec - kdump - some direct-io performance tweaking - radix-tree optimisations - new selftests code A note on this: often people will develop a new userspace-visible feature and will develop userspace code to exercise/test that feature. Then they merge the patch and the selftest code dies. Sometimes we paste it into the changelog. Sometimes the code gets thrown into Documentation/(!). This saddens me. So this patch creates a bare-bones framework which will henceforth allow me to ask people to include their test apps in the kernel tree so we can keep them alive. Then when people enhance or fix the feature, I can ask them to update the test app too. The infrastruture is terribly trivial at present - let's see how it evolves. - checkpoint/restart feature work. A note on this: this is a project by various mad Russians to perform c/r mainly from userspace, with various oddball helper code added into the kernel where the need is demonstrated. So rather than some large central lump of code, what we have is little bits and pieces popping up in various places which either expose something new or which permit something which is normally kernel-private to be modified. The overall project is an ongoing thing. I've judged that the size and scope of the thing means that we're more likely to be successful with it if we integrate the support into mainline piecemeal rather than allowing it all to develop out-of-tree. However I'm less confident than the developers that it will all eventually work! So what I'm asking them to do is to wrap each piece of new code inside CONFIG_CHECKPOINT_RESTORE. So if it all eventually comes to tears and the project as a whole fails, it should be a simple matter to go through and delete all trace of it. This lot pretty much wraps up the -rc1 merge for me. * akpm: (96 commits) unlzo: fix input buffer free ramoops: update parameters only after successful init ramoops: fix use of rounddown_pow_of_two() c/r: prctl: add PR_SET_MM codes to set up mm_struct entries c/r: procfs: add start_data, end_data, start_brk members to /proc/$pid/stat v4 c/r: introduce CHECKPOINT_RESTORE symbol selftests: new x86 breakpoints selftest selftests: new very basic kernel selftests directory radix_tree: take radix_tree_path off stack radix_tree: remove radix_tree_indirect_to_ptr() dio: optimize cache misses in the submission path vfs: cache request_queue in struct block_device fs/direct-io.c: calculate fs_count correctly in get_more_blocks() drivers/parport/parport_pc.c: fix warnings panic: don't print redundant backtraces on oops sysctl: add the kernel.ns_last_pid control kdump: add udev events for memory online/offline include/linux/crash_dump.h needs elf.h kdump: fix crash_kexec()/smp_send_stop() race in panic() kdump: crashk_res init check for /sys/kernel/kexec_crash_size ...
| * | | | | | selftests: new x86 breakpoints selftestFrederic Weisbecker2012-01-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bring a first selftest in the relevant directory. This tests several combinations of breakpoints and watchpoints in x86, as well as icebp traps and int3 traps. Given the amount of breakpoint regressions we raised after we merged the generic breakpoint infrastructure, such selftest became necessary and can still serve today as a basis for new patches that touch the do_debug() path. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Michal Marek <mmarek@suse.cz> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | | | selftests: new very basic kernel selftests directoryFrederic Weisbecker2012-01-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bring a new kernel selftests directory in tools/testing/selftests. To add a new selftest, create a subdirectory with the sources and a makefile that creates a target named "run_test" then add the subdirectory name to the TARGET var in tools/testing/selftests/Makefile and tools/testing/selftests/run_tests script. This can help centralizing and maintaining any useful selftest that developers usually tend to let rust in peace on some random server. Suggested-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Michal Marek <mmarek@suse.cz> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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