- 12 Nov, 2013 36 commits
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Ingo Molnar authored
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: * Add summary only option to 'perf trace', suppressing the decoding of events, from David Ahern * 'perf trace --summary' formatting simplifications, from Pekka Emberg. * Beautify fifth argument of mmap() as fd, in 'perf trace', from Namhyung Kim. * Fix segfault on perf trace -i perf.data, from Namhyung Kim. * Fix segfault with --no-mmap-pages, from David Ahern. * Round mmap pages to power 2, from David Ahern. * Add direct access to dynamic arrays in libtraceevent, from Steven Rostedt. * Handle throttle events in 'object code reading' test, fix from Adrian Hunter. * Prevent condition that all sort keys are elided, fix from Namhyung Kim. * Synthesize non-exec MMAP records when --data used, allowing the resolution of data addresses to symbols (global variables, etc). * Don't force a refresh during progress update in the TUI, greatly reducing startup costs, fix from Patrick Palka. * Fix sw clock event period test wrt not checking if using > max_sample_freq. * Code cleanups by David Ahern and Adrian Hunter. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Steven Rostedt authored
Jiri Olsa was writing a plugin for the cfg80211_tx_mlme_mgmt trace event, and was not able to get the implemented function working. The event's print fmt looks like: "netdev:%s(%d), ftype:0x%.2x", REC->name, REC->ifindex, __le16_to_cpup((__le16 *)__get_dynamic_array(frame)) As there's no helper function for __le16_to_cpup(), Jiri was creating one with a plugin. But unfortunately, it would not work even though he set up the plugin correctly. The problem is that the function parameters do not handle the helper function "__get_dynamic_array()", and that passes in a NULL pointer. Adding PRINT_DYNAMIC_ARRAY direct support to eval_num_arg() allows the use of __get_dynamic_array() in function parameters. Reported-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Tested-by: Jiri Olsa <jolsa@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20131111160810.0ba9df7d@gandalf.local.homeSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Arnaldo Carvalho de Melo authored
Getting unwieldly long, for this app domain should be descriptive enough and the use of __ to separate the class from the method names should help with avoiding clashes with other code bases. Reported-by: David Ahern <dsahern@gmail.com> Suggested-by: Ingo Molnar <mingo@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20131112113427.GA4053@ghostprotocols.netSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Adrian Hunter authored
Unhandled events cause an error that fails the test, fix it. Reported-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/5281DFE5.3000909@intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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David Ahern authored
Logic will be re-used for the out-pages argument for mmap based writes in perf-record. Signed-off-by: David Ahern <dsahern@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1384267617-3446-4-git-send-email-dsahern@gmail.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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David Ahern authored
Currently perf requires the -m / --mmap_pages option to be a power of 2. To be more user friendly perf should automatically round this up to the next power of 2. Currently: $ perf record -m 3 -a -- sleep 1 --mmap_pages/-m value must be a power of two.sleep: Terminated With patch: $ perf record -m 3 -a -- sleep 1 rounding mmap pages size to 16384 (4 pages) ... v2: Add bytes units to rounding message per Ingo's request. Other suggestions (e.g., prefixing INFO) should be addressed by wrapping pr_info to catch all instances. Suggested-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1384267617-3446-3-git-send-email-dsahern@gmail.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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David Ahern authored
Adrian reported a segfault when using --no-out-pages: $ tools/perf/perf record -vv --no-out-pages uname Segmentation fault (core dumped) The same occurs with --no-mmap-pages. Fix by checking that str is non-NULL before parsing it. Signed-off-by: David Ahern <dsahern@gmail.com> Reported-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1384267617-3446-2-git-send-email-dsahern@gmail.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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David Ahern authored
Per request from Pekka make --summary a summary only option meaning do not show the individual system calls. Add another option to see all syscalls along with the summary. In addition use 's' and 'S' as shortcuts for the options. Requested-by: Pekka Enberg <penberg@kernel.org> Signed-off-by: David Ahern <dsahern@gmail.com> Tested-by: Pekka Enberg <penberg@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Pekka Enberg <penberg@kernel.org> Link: http://lkml.kernel.org/r/1384273875-3751-1-git-send-email-dsahern@gmail.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Pekka Enberg authored
The output of 'perf trace --summary' tries to be too cute with formatting and makes it very hard to read. Simplify it in the spirit of "strace -c": [penberg@localhost libtrading]$ perf trace -a --duration 10000 --summary -- sleep 1 ^C Summary of events: dbus-daemon (555), 10 events, 0.0%, 0.000 msec msec/call syscall calls min avg max stddev --------------- -------- -------- -------- -------- ------ sendmsg 2 0.002 0.005 0.008 55.00 recvmsg 2 0.002 0.003 0.005 44.00 epoll_wait 1 0.000 0.000 0.000 0.00 NetworkManager (667), 56 events, 0.0%, 0.000 msec msec/call syscall calls min avg max stddev --------------- -------- -------- -------- -------- ------ poll 2 0.000 0.002 0.003 100.00 sendmsg 10 0.004 0.007 0.016 15.41 recvmsg 16 0.002 0.003 0.005 8.24 zfs-fuse (669), 4 events, 0.0%, 0.000 msec msec/call syscall calls min avg max stddev --------------- -------- -------- -------- -------- ------ futex 2 0.000 0.001 0.002 100.00 Signed-off-by: Pekka Enberg <penberg@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Link: http://lkml.kernel.org/r/1384267334-18953-1-git-send-email-penberg@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Pekka Enberg authored
Switch duration order to minimum, average, maximum for the '--summary' command line option because it's more natural to read. Signed-off-by: Pekka Enberg <penberg@kernel.org> Acked-by: David Ahern <dsahern@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Link: http://lkml.kernel.org/r/1384265410-12344-1-git-send-email-penberg@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Adrian Hunter authored
Doesn't work for me: ./perf test -v 19 19: Test software clock events have valid period values : --- start --- mmap size 528384B mmap size 528384B All (0) samples have period value of 1! ---- end ---- Test software clock events have valid period values: FAILED! Compensate the lower freq introduced in 67c1e4a5 with a longer loop, Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/5281D3B8.2030104@intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Namhyung Kim authored
When replaying a previous record session, it'll get a segfault since it doesn't initialize raw_syscalls enter/exit tracepoint's evsel->priv for caching the format fields. So fix it by properly initializing sys_enter/exit evsels that comes from reading the perf.data file header. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1384237500-22991-2-git-send-email-namhyung@kernel.org [ Split the syscall tp field caching part in the previous patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Namhyung Kim authored
We need to set this in evsels coming out of a perf.data file header, not just for new ones created for live sessions. So separate the code that caches the syscall entry/exit tracepoint format fields into a new function that will be used in the next changeset. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.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/r/20131112115700.GC4053@ghostprotocols.netSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Namhyung Kim authored
The fifth argument of mmap syscall is fd and it often contains -1 as a value for anon mappings. Without this patch it doesn't show the file name as well as it shows -1 as 4294967295. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: David Ahern <dsahern@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1384237500-22991-1-git-send-email-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 UV debug changes from Ingo Molnar: "Various SGI UV debuggability improvements, amongst them KDB support, with related core KDB enabling patches changing kernel/debug/kdb/" * 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: Revert "x86/UV: Add uvtrace support" x86/UV: Add call to KGDB/KDB from NMI handler kdb: Add support for external NMI handler to call KGDB/KDB x86/UV: Check for alloc_cpumask_var() failures properly in uv_nmi_setup() x86/UV: Add uvtrace support x86/UV: Add kdump to UV NMI handler x86/UV: Add summary of cpu activity to UV NMI handler x86/UV: Update UV support for external NMI signals x86/UV: Move NMI support
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 uaccess changes from Ingo Molnar: "A single change that micro-optimizes __copy_*_user_inatomic(), used by the futex code" * 'x86-uaccess-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86: Add 1/2/4/8 byte optimization to 64bit __copy_{from,to}_user_inatomic
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 reboot changes from Ingo Molnar: "Misc changes - the only one with functional impact should be commit 16c21ae5 ("reboot: Allow specifying warm/cold reset for CF9 boot type") which extends cold/warm reboot handling to the 0xCF9 reboot method" * 'x86-reboot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/reboot: Correct pr_info() log message in the set_bios/pci/kbd_reboot() x86/reboot: Sort reboot DMI quirks by vendor x86/reboot: Remove the duplicate C6100 entry in the reboot quirks list reboot: Allow specifying warm/cold reset for CF9 boot type
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 platform fixlet from Ingo Molnar: "A single __initdata fix" * 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/geode: Fix incorrect placement of __initdata tag
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 mm fixlet from Ingo Molnar: "One cleanup that documents a particular detail in init_mem_mapping()" * 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm: Add 'step_size' comments to init_mem_mapping()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 RAS changes from Ingo Molnar: "The biggest change adds support for Intel 'CPER' (UEFI Common Platform Error Record) error logging, which builds upon an enhanced error logging mechanism available on Xeon processors. Full description is here: http://www.intel.com/content/www/us/en/architecture-and-technology/enhanced-mca-logging-xeon-paper.html This change provides a module (and support code) to check for an extended error log and prints extra details about the error on the console" * 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: ACPI, x86: Fix extended error log driver to depend on CONFIG_X86_LOCAL_APIC dmi: Avoid unaligned memory access in save_mem_devices() Move cper.c from drivers/acpi/apei to drivers/firmware/efi EDAC, GHES: Update ghes error record info ACPI, APEI, CPER: Cleanup CPER memory error output format ACPI, APEI, CPER: Enhance memory reporting capability ACPI, APEI, CPER: Add UEFI 2.4 support for memory error DMI: Parse memory device (type 17) in SMBIOS ACPI, x86: Extended error log driver for x86 platform bitops: Introduce a more generic BITMASK macro ACPI, CPER: Update cper info ACPI, APEI, CPER: Fix status check during error printing
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 iommu changes from Ingo Molnar: "Make it easier to turn off the old AMD GART code" * 'x86-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/iommu: Clean up the CONFIG_GART_IOMMU config option a bit x86/iommu: Don't make AMD_GART depend on EXPERT and default y
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86/intel-mid changes from Ingo Molnar: "Update the 'intel mid' (mobile internet device) platform code as Intel is rolling out more SoC designs. This gets rid of most of the 'MRST' platform code in the process, mostly by renaming and shuffling code around into their respective 'intel-mid' platform drivers" * 'x86-intel-mid-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, intel-mid: Do not re-introduce usage of obsolete __cpuinit intel_mid: Move platform device setups to their own platform_<device>.* files x86: intel-mid: Add section for sfi device table intel-mid: sfi: Allow struct devs_id.get_platform_data to be NULL intel_mid: Moved SFI related code to sfi.c intel_mid: Added custom handler for ipc devices intel_mid: Added custom device_handler support intel_mid: Refactored sfi_parse_devs() function intel_mid: Renamed *mrst* to *intel_mid* pci: intel_mid: Return true/false in function returning bool intel_mid: Renamed *mrst* to *intel_mid* mrst: Fixed indentation issues mrst: Fixed printk/pr_* related issues
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86/hyperv changes from Ingo Molnar: "These changes enable Linux guests to boot as 'Modern VM' guest kernels on MS-Hyperv hosts" * 'x86-hyperv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, hyperv: Move a variable to avoid an unused variable warning x86, hyperv: Fix build error due to missing <asm/apic.h> include x86, hyperv: Correctly guard the local APIC calibration code x86, hyperv: Get the local APIC timer frequency from the hypervisor
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 EFI changes from Ingo Molnar: "Main changes: - Add support for earlyprintk=efi which uses the EFI framebuffer. Very useful for debugging boot problems. - EFI stub support for large memory maps (more than 128 entries) - EFI ARM support - this was mostly done by generalizing x86 <-> ARM platform differences, such as by moving x86 EFI code into drivers/firmware/efi/ and sharing it with ARM. - Documentation updates - misc fixes" * 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits) x86/efi: Add EFI framebuffer earlyprintk support boot, efi: Remove redundant memset() x86/efi: Fix config_table_type array termination x86 efi: bugfix interrupt disabling sequence x86: EFI stub support for large memory maps efi: resolve warnings found on ARM compile efi: Fix types in EFI calls to match EFI function definitions. efi: Renames in handle_cmdline_files() to complete generalization. efi: Generalize handle_ramdisks() and rename to handle_cmdline_files(). efi: Allow efi_free() to be called with size of 0 efi: use efi_get_memory_map() to get final map for x86 efi: generalize efi_get_memory_map() efi: Rename __get_map() to efi_get_memory_map() efi: Move unicode to ASCII conversion to shared function. efi: Generalize relocate_kernel() for use by other architectures. efi: Move relocate_kernel() to shared file. efi: Enforce minimum alignment of 1 page on allocations. efi: Rename memory allocation/free functions efi: Add system table pointer argument to shared functions. efi: Move common EFI stub code from x86 arch code to common location ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 cpu changes from Ingo Molnar: "The biggest change that stands out is the increase of the CONFIG_NR_CPUS range from 4096 to 8192 - as real hardware out there already went beyond 4k CPUs ... We only allow more than 512 CPUs if offstack cpumasks are enabled. CONFIG_MAXSMP=y remains to be the 'you are nuts!' extreme testcase, which now means a max of 8192 CPUs" * 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu: Increase max CPU count to 8192 x86/cpu: Allow higher NR_CPUS values x86/cpu: Always print SMP information in /proc/cpuinfo x86/cpu: Track legacy CPU model data only on 32-bit kernels
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 cleanups from Ingo Molnar: "Two small cleanups" * 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, msr: Use file_inode(), not f_mapping->host x86: mkpiggy.c: Explicitly close the output file
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 build changes from Ingo Molnar: "Two small changes" * 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, defconfig: Add DEVTMPFS and DEVTMPFS_MOUNT to *86*_defconfig x86, build: move build output statistics away from stderr
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 boot changes from Ingo Molnar: "Two changes that prettify and compactify the SMP bootup output from: smpboot: Booting Node 0, Processors #1 #2 #3 OK smpboot: Booting Node 1, Processors #4 #5 #6 #7 OK smpboot: Booting Node 2, Processors #8 #9 #10 #11 OK smpboot: Booting Node 3, Processors #12 #13 #14 #15 OK Brought up 16 CPUs to something like: x86: Booting SMP configuration: .... node #0, CPUs: #1 #2 #3 .... node #1, CPUs: #4 #5 #6 #7 .... node #2, CPUs: #8 #9 #10 #11 .... node #3, CPUs: #12 #13 #14 #15 x86: Booted up 4 nodes, 16 CPUs" * 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/boot: Further compress CPUs bootup message x86: Improve the printout of the SMP bootup CPU table
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 user access changes from Ingo Molnar: "This tree contains two copy_[from/to]_user() build time checking changes/enhancements from Jan Beulich. The desired outcome is to get better compiler warnings with CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y, to keep people from introducing bugs such as overflows and information leaks" * 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86: Unify copy_to_user() and add size checking to it x86: Unify copy_from_user() size checking
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86/apic fix from Ingo Molnar: "A single fix to the IO-APIC / local-APIC shutdown sequence" * 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/apic: Disable I/O APIC before shutdown of the local APIC
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer changes from Ingo Molnar: "Main changes in this cycle were: - Updated full dynticks support. - Event stream support for architected (ARM) timers. - ARM clocksource driver updates. - Move arm64 to using the generic sched_clock framework & resulting cleanup in the generic sched_clock code. - Misc fixes and cleanups" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits) x86/time: Honor ACPI FADT flag indicating absence of a CMOS RTC clocksource: sun4i: remove IRQF_DISABLED clocksource: sun4i: Report the minimum tick that we can program clocksource: sun4i: Select CLKSRC_MMIO clocksource: Provide timekeeping for efm32 SoCs clocksource: em_sti: convert to clk_prepare/unprepare time: Fix signedness bug in sysfs_get_uname() and its callers timekeeping: Fix some trivial typos in comments alarmtimer: return EINVAL instead of ENOTSUPP if rtcdev doesn't exist clocksource: arch_timer: Do not register arch_sys_counter twice timer stats: Add a 'Collection: active/inactive' line to timer usage statistics sched_clock: Remove sched_clock_func() hook arch_timer: Move to generic sched_clock framework clocksource: tcb_clksrc: Remove IRQF_DISABLED clocksource: tcb_clksrc: Improve driver robustness clocksource: tcb_clksrc: Replace clk_enable/disable with clk_prepare_enable/disable_unprepare clocksource: arm_arch_timer: Use clocksource for suspend timekeeping clocksource: dw_apb_timer_of: Mark a few more functions as __init clocksource: Put nodes passed to CLOCKSOURCE_OF_DECLARE callbacks centrally arm: zynq: Enable arm_global_timer ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler changes from Ingo Molnar: "The main changes in this cycle are: - (much) improved CONFIG_NUMA_BALANCING support from Mel Gorman, Rik van Riel, Peter Zijlstra et al. Yay! - optimize preemption counter handling: merge the NEED_RESCHED flag into the preempt_count variable, by Peter Zijlstra. - wait.h fixes and code reorganization from Peter Zijlstra - cfs_bandwidth fixes from Ben Segall - SMP load-balancer cleanups from Peter Zijstra - idle balancer improvements from Jason Low - other fixes and cleanups" * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (129 commits) ftrace, sched: Add TRACE_FLAG_PREEMPT_RESCHED stop_machine: Fix race between stop_two_cpus() and stop_cpus() sched: Remove unnecessary iteration over sched domains to update nr_busy_cpus sched: Fix asymmetric scheduling for POWER7 sched: Move completion code from core.c to completion.c sched: Move wait code from core.c to wait.c sched: Move wait.c into kernel/sched/ sched/wait: Fix __wait_event_interruptible_lock_irq_timeout() sched: Avoid throttle_cfs_rq() racing with period_timer stopping sched: Guarantee new group-entities always have weight sched: Fix hrtimer_cancel()/rq->lock deadlock sched: Fix cfs_bandwidth misuse of hrtimer_expires_remaining sched: Fix race on toggling cfs_bandwidth_used sched: Remove extra put_online_cpus() inside sched_setaffinity() sched/rt: Fix task_tick_rt() comment sched/wait: Fix build breakage sched/wait: Introduce prepare_to_wait_event() sched/wait: Add ___wait_cond_timeout() to wait_event*_timeout() too sched: Remove get_online_cpus() usage sched: Fix race in migrate_swap_stop() ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf updates from Ingo Molnar: "As a first remark I'd like to note that the way to build perf tooling has been simplified and sped up, in the future it should be enough for you to build perf via: cd tools/perf/ make install (ie without the -j option.) The build system will figure out the number of CPUs and will do a parallel build+install. The various build system inefficiencies and breakages Linus reported against the v3.12 pull request should now be resolved - please (re-)report any remaining annoyances or bugs. Main changes on the perf kernel side: * Performance optimizations: . perf ring-buffer code optimizations, by Peter Zijlstra . perf ring-buffer code optimizations, by Oleg Nesterov . x86 NMI call-stack processing optimizations, by Peter Zijlstra . perf context-switch optimizations, by Peter Zijlstra . perf sampling speedups, by Peter Zijlstra . x86 Intel PEBS processing speedups, by Peter Zijlstra * Enhanced hardware support: . for Intel Ivy Bridge-EP uncore PMUs, by Zheng Yan . for Haswell transactions, by Andi Kleen, Peter Zijlstra * Core perf events code enhancements and fixes by Oleg Nesterov: . for uprobes, if fork() is called with pending ret-probes . for uprobes platform support code * New ABI details by Andi Kleen: . Report x86 Haswell TSX transaction abort cost as weight Main changes on the perf tooling side (some of these tooling changes utilize the above kernel side changes): * 'perf report/top' enhancements: . Convert callchain children list to rbtree, greatly reducing the time taken for callchain processing, from Namhyung Kim. . Add new COMM infrastructure, further improving histogram processing, from Frédéric Weisbecker, one fix from Namhyung Kim. . Add /proc/kcore based live-annotation improvements, including build-id cache support, multi map 'call' instruction navigation fixes, kcore address validation, objdump workarounds. From Adrian Hunter. . Show progress on histogram collapsing, that can take a long time, from Namhyung Kim. . Add --max-stack option to limit callchain stack scan in 'top' and 'report', improving callchain processing when reducing the stack depth is an option, from Waiman Long. . Add new option --ignore-vmlinux for perf top, from Willy Tarreau. * 'perf trace' enhancements: . 'perf trace' now can can use a 'perf probe' dynamic tracepoints to hook into the userspace -> kernel pathname copy so that it can map fds to pathnames without reading /proc/pid/fd/ symlinks. From Arnaldo Carvalho de Melo. . Show VFS path associated with fd in live sessions, using a 'vfs_getname' 'perf probe' created dynamic tracepoint or by looking at /proc/pid/fd, from Arnaldo Carvalho de Melo. . Add 'trace' beautifiers for lots of syscall arguments, from Arnaldo Carvalho de Melo. . Implement more compact 'trace' output by suppressing zeroed args, from Arnaldo Carvalho de Melo. . Show thread COMM by default in 'trace', from Arnaldo Carvalho de Melo. . Add option to show full timestamp in 'trace', from David Ahern. . Add 'record' command in 'trace', to record raw_syscalls:*, from David Ahern. . Add summary option to dump syscall statistics in 'trace', from David Ahern. . Improve error messages in 'trace', providing hints about system configuration steps needed for using it, from Ramkumar Ramachandra. . 'perf trace' now emits hints as to why tracing is not possible, helping the user to setup the system to allow tracing in the desired permission granularity, telling if the problem is due to debugfs not being mounted or with not enough permission for !root, /proc/sys/kernel/perf_event_paranoit value, etc. From Arnaldo Carvalho de Melo. * 'perf record' enhancements: . Check maximum frequency rate for record/top, emitting better error messages, from Jiri Olsa. . 'perf record' code cleanups, from David Ahern. . Improve write_output error message in 'perf record', from Adrian Hunter. . Allow specifying B/K/M/G unit to the --mmap-pages arguments, from Jiri Olsa. . Fix command line callchain attribute tests to handle the new -g/--call-chain semantics, from Arnaldo Carvalho de Melo. * 'perf kvm' enhancements: . Disable live kvm command if timerfd is not supported, from David Ahern. . Fix detection of non-core features, from David Ahern. * 'perf list' enhancements: . Add usage to 'perf list', from David Ahern. . Show error in 'perf list' if tracepoints not available, from Pekka Enberg. * 'perf probe' enhancements: . Support "$vars" meta argument syntax for local variables, allowing asking for all possible variables at a given probe point to be collected when it hits, from Masami Hiramatsu. * 'perf sched' enhancements: . Address the root cause of that 'perf sched' stack initialization build slowdown, by programmatically setting a big array after moving the global variable back to the stack. Fix from Adrian Hunter. * 'perf script' enhancements: . Set up output options for in-stream attributes, from Adrian Hunter. . Print addr by default for BTS in 'perf script', from Adrian Juntmer * 'perf stat' enhancements: . Improved messages when doing profiling in all or a subset of CPUs using a workload as the session delimitator, as in: 'perf stat --cpu 0,2 sleep 10s' from Arnaldo Carvalho de Melo. . Add units to nanosec-based counters in 'perf stat', from David Ahern. . Remove bogus info when using 'perf stat' -e cycles/instructions, from Ramkumar Ramachandra. * 'perf lock' enhancements: . 'perf lock' fixes and cleanups, from Davidlohr Bueso. * 'perf test' enhancements: . Fixup PERF_SAMPLE_TRANSACTION handling in sample synthesizing and 'perf test', from Adrian Hunter. . Clarify the "sample parsing" test entry, from Arnaldo Carvalho de Melo. . Consider PERF_SAMPLE_TRANSACTION in the "sample parsing" test, from Arnaldo Carvalho de Melo. . Memory leak fixes in 'perf test', from Felipe Pena. * 'perf bench' enhancements: . Change the procps visible command-name of invididual benchmark tests plus cleanups, from Ingo Molnar. * Generic perf tooling infrastructure/plumbing changes: . Separating data file properties from session, code reorganization from Jiri Olsa. . Fix version when building out of tree, as when using one of these: $ make help | grep perf perf-tar-src-pkg - Build perf-3.12.0.tar source tarball perf-targz-src-pkg - Build perf-3.12.0.tar.gz source tarball perf-tarbz2-src-pkg - Build perf-3.12.0.tar.bz2 source tarball perf-tarxz-src-pkg - Build perf-3.12.0.tar.xz source tarball $ from David Ahern. . Enhance option parse error message, showing just the help lines of the options affected, from Namhyung Kim. . libtraceevent updates from upstream trace-cmd repo, from Steven Rostedt. . Always use perf_evsel__set_sample_bit to set sample_type, from Adrian Hunter. . Memory and mmap leak fixes from Chenggang Qin. . Assorted build fixes for from David Ahern and Jiri Olsa. . Speed up and prettify the build system, from Ingo Molnar. . Implement addr2line directly using libbfd, from Roberto Vitillo. . Separate the GTK support in a separate libperf-gtk.so DSO, that is only loaded when --gtk is specified, from Namhyung Kim. . perf bash completion fixes and improvements from Ramkumar Ramachandra. . Support for Openembedded/Yocto -dbg packages, from Ricardo Ribalda Delgado. And lots and lots of other fixes and code reorganizations that did not make it into the list, see the shortlog, diffstat and the Git log for details!" * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (300 commits) uprobes: Fix the memory out of bound overwrite in copy_insn() uprobes: Fix the wrong usage of current->utask in uprobe_copy_process() perf tools: Remove unneeded include perf record: Remove post_processing_offset variable perf record: Remove advance_output function perf record: Refactor feature handling into a separate function perf trace: Don't relookup fields by name in each sample perf tools: Fix version when building out of tree perf evsel: Ditch evsel->handler.data field uprobes: Export write_opcode() as uprobe_write_opcode() uprobes: Introduce arch_uprobe->ixol uprobes: Kill module_init() and module_exit() uprobes: Move function declarations out of arch perf/x86/intel: Add Ivy Bridge-EP uncore IRP box support perf/x86/intel/uncore: Add filter support for IvyBridge-EP QPI boxes perf: Factor out strncpy() in perf_event_mmap_event() tools/perf: Add required memory barriers perf: Fix arch_perf_out_copy_user default perf: Update a stale comment perf: Optimize perf_output_begin() -- address calculation ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull leftover IRQ fixes from Ingo Molnar: "Two (minor) fixlets that missed v3.12" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: genirq: Set the irq thread policy without checking CAP_SYS_NICE irq: DocBook/genericirq.tmpl: Correct various typos
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull IRQ changes from Ingo Molnar: "The biggest change this cycle are the softirq/hardirq stack interaction and nesting fixes, cleanups and reorganizations from Frederic. This is the longer followup story to the softirq nesting fix that is already upstream (commit ded79754: "irq: Force hardirq exit's softirq processing on its own stack")" * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip: bcm2835: Convert to use IRQCHIP_DECLARE macro powerpc: Tell about irq stack coverage x86: Tell about irq stack coverage irq: Optimize softirq stack selection in irq exit irq: Justify the various softirq stack choices irq: Improve a bit softirq debugging irq: Optimize call to softirq on hardirq exit irq: Consolidate do_softirq() arch overriden implementations x86/irq: Correct comment about i8259 initialization
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull RCU updates from Ingo Molnar: "The main RCU changes in this cycle are: - Idle entry/exit changes, to throttle callback execution and other refinements to speed up kbuild, primarily to address performance issues located by Tibor Billes. - Grace-period related changes, primarily to aid in debugging, inspired by an -rt debugging session. - Code reorganization moving RCU's source files into its own kernel/rcu/ directory. - RCU documentation updates - Miscellaneous fixes. Note, the following commit: 5c889690 mm: Place preemption point in do_mlockall() loop is identical to the commit already in your tree via email: 22356f44 mm: Place preemption point in do_mlockall() loop [ Your version of the changelog nicely demonstrates it how kernel oops messages should be trimmed properly :-/ ]" * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (30 commits) rcu: Move RCU-related source code to kernel/rcu directory rcu: Fix occurrence of "the the" in checklist.txt kthread: Add pointer to vmstat-avoidance patch rcu: Update stall-warning documentation rcu: Consistent rcu_is_watching() naming rcu: Change EXPORT_SYMBOL() to EXPORT_SYMBOL_GPL() rcu: Is it safe to enter an RCU read-side critical section? rcu: Throttle invoke_rcu_core() invocations due to non-lazy callbacks rcu: Throttle rcu_try_advance_all_cbs() execution rcu: Remove redundant code from rcu_cleanup_after_idle() rcu: Fix CONFIG_RCU_NOCB_CPU_ALL panic on machines with sparse CPU mask rcu: Avoid sparse warnings in rcu_nocb_wake trace event rcu: Track rcu_nocb_kthread()'s sleeping and awakening rcu: Distinguish between NOCB and non-NOCB rcu_callback trace events rcu: Add tracing for rcuo no-CBs CPU wakeup handshake rcu: Add tracing of normal (non-NOCB) grace-period requests rcu: Add tracing to rcu_gp_kthread() rcu: Flag lockless access to ->gp_flags with ACCESS_ONCE() rcu: Prevent spurious-wakeup DoS attack on rcu_gp_kthread() rcu: Improve grace-period start logic ...
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- 11 Nov, 2013 4 commits
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Arnaldo Carvalho de Melo authored
We were using it at 10 kHz, which doesn't work in machines where somehow the max freq was auto reduced by the kernel: [root@ssdandy ~]# perf test 19 19: Test software clock events have valid period values : FAILED! [root@ssdandy ~]# perf test -v 19 19: Test software clock events have valid period values : --- start --- Couldn't open evlist: Invalid argument ---- end ---- Test software clock events have valid period values: FAILED! [root@ssdandy ~]# [root@ssdandy ~]# cat /proc/sys/kernel/perf_event_max_sample_rate 7000 Reducing it to 500 Hz should be good enough for this test and also shouldn't affect what it is testing. But warn the user if it fails, informing the knob and the freq tried. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> 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-548rhj1uo6xbwnxa95kw3hqe@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Arnaldo Carvalho de Melo authored
We were not checking if we successfully opened the counters, i.e. if sys_perf_event_open worked, when it doesn't in this test, we were continuing anyway and then segfaulting when trying to access the file descriptor array, that at that point had been freed in perf_evlist__open error path: [root@ssdandy ~]# perf test -v 19 19: Test software clock events have valid period values : --- start --- Segmentation fault (core dumped) [root@ssdandy ~]# Do the check and bail out instead. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.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-6qy8ljkn0e9hm7bh7keo5z68@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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David Ahern authored
Code move only; no logic changes. In preparation for the mmap based output option in the next patch. Signed-off-by: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1383884605-30968-2-git-send-email-dsahern@gmail.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Adrian Hunter authored
write() returns a 'ssize_t' not an 'int'. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1383906470-21002-1-git-send-email-adrian.hunter@intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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