user/sven/linux.git/tools/perf/scripts, branch v4.8.1

Merge tag 'perf-core-for-mingo-20160803' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

2016-08-04T09:02:38Z

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: New features: - Add --sample-cpu to 'perf record', to explicitely ask for sampling the CPU (Jiri Olsa) Fixes: - Fix processing of multi byte chunks in objdump output, fixing disassemble processing for annotation on at least ARM64 (Jan Stancek) - Use SyS_epoll_wait in a BPF 'perf test' entry instead of sys_epoll_wait, that is not present in the DWARF info in vmlinux files (Arnaldo Carvalho de Melo) - Add -wno-shadow when processing files using perl headers, fixing the build on Fedora Rawhide and Arch Linux (Namhyung Kim) Infrastructure changes: - Annotate prep work to better catch and report errors related to using objdump to disassemble DSOs (Arnaldo Carvalho de Melo) - Add 'alloc', 'scnprintf' and 'and' methods for bitmap processing (Jiri Olsa) - Add nested output resorting callback in hists processing (Jiri Olsa) Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Ingo Molnar

perf tools: Fix build failure on perl script context

2016-08-02T15:11:06Z

On my Archlinux machine, perf faild to build like below: CC scripts/perl/Perf-Trace-Util/Context.o In file included from /usr/lib/perl5/core/perl/CORE/perl.h:3905:0, from Context.xs:23: /usr/lib/perl5/core/perl/CORE/inline.h: In function : /usr/lib/perl5/core/perl/CORE/cop.h:612:13: warning: declaration of 'av' shadows a previous local [-Werror-shadow] AV *av =3D GvAV(PL_defgv); ^ /usr/lib/perl5/core/perl/CORE/inline.h:526:5: note: in expansion of macro 'CX_POP_SAVEARRAY' CX_POP_SAVEARRAY(cx); ^~~~~~~~~~~~~~~~ In file included from /usr/lib/perl5/core/perl/CORE/perl.h:5853:0, from Context.xs:23: /usr/lib/perl5/core/perl/CORE/inline.h:518:9: note: shadowed declaration is here AV *av; ^~ What I did to fix is adding '-Wno-shadow' as the error message said it's the cause of the failure. Since it's from the perl (not perf) code base, we don't have the control so I just wanted to ignore the warning when compiling perl scripting code. Committer note: This also fixes the build on Fedora Rawhide. Signed-off-by: Namhyung Kim Tested-by: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20160802024317.31725-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

2016-07-27T19:03:20Z

Pull networking updates from David Miller: 1) Unified UDP encapsulation offload methods for drivers, from Alexander Duyck. 2) Make DSA binding more sane, from Andrew Lunn. 3) Support QCA9888 chips in ath10k, from Anilkumar Kolli. 4) Several workqueue usage cleanups, from Bhaktipriya Shridhar. 5) Add XDP (eXpress Data Path), essentially running BPF programs on RX packets as soon as the device sees them, with the option to mirror the packet on TX via the same interface. From Brenden Blanco and others. 6) Allow qdisc/class stats dumps to run lockless, from Eric Dumazet. 7) Add VLAN support to b53 and bcm_sf2, from Florian Fainelli. 8) Simplify netlink conntrack entry layout, from Florian Westphal. 9) Add ipv4 forwarding support to mlxsw spectrum driver, from Ido Schimmel, Yotam Gigi, and Jiri Pirko. 10) Add SKB array infrastructure and convert tun and macvtap over to it. From Michael S Tsirkin and Jason Wang. 11) Support qdisc packet injection in pktgen, from John Fastabend. 12) Add neighbour monitoring framework to TIPC, from Jon Paul Maloy. 13) Add NV congestion control support to TCP, from Lawrence Brakmo. 14) Add GSO support to SCTP, from Marcelo Ricardo Leitner. 15) Allow GRO and RPS to function on macsec devices, from Paolo Abeni. 16) Support MPLS over IPV4, from Simon Horman. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1622 commits) xgene: Fix build warning with ACPI disabled. be2net: perform temperature query in adapter regardless of its interface state l2tp: Correctly return -EBADF from pppol2tp_getname. net/mlx5_core/health: Remove deprecated create_singlethread_workqueue net: ipmr/ip6mr: update lastuse on entry change macsec: ensure rx_sa is set when validation is disabled tipc: dump monitor attributes tipc: add a function to get the bearer name tipc: get monitor threshold for the cluster tipc: make cluster size threshold for monitoring configurable tipc: introduce constants for tipc address validation net: neigh: disallow transition to NUD_STALE if lladdr is unchanged in neigh_update() MAINTAINERS: xgene: Add driver and documentation path Documentation: dtb: xgene: Add MDIO node dtb: xgene: Add MDIO node drivers: net: xgene: ethtool: Use phy_ethtool_gset and sset drivers: net: xgene: Use exported functions drivers: net: xgene: Enable MDIO driver drivers: net: xgene: Add backward compatibility drivers: net: phy: xgene: Add MDIO driver ...

net: tracepoint napi:napi_poll add work and budget

2016-07-09T22:05:02Z

An important information for the napi_poll tracepoint is knowing the work done (packets processed) by the napi_poll() call. Add both the work done and budget, as they are related. Handle trace_napi_poll() param change in dropwatch/drop_monitor and in python perf script netdev-times.py in backward compat way, as python fortunately supports optional parameter handling. Signed-off-by: Jesper Dangaard Brouer Signed-off-by: David S. Miller

perf script stackcollapse: Remove reference to the perl interpreter

2016-06-22T12:56:34Z

It is ignored and this is actually a python script, not a perl one. Reported-by: Brendan Gregg Cc: Jiri Olsa Cc: Milian Wolff Cc: Namhyung Kim Cc: Paolo Bonzini Link: http://lkml.kernel.org/n/tip-0w4bpbqd79v3sl34jvpr11v0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf script: Add stackcollapse.py script

2016-06-21T16:18:35Z

Add stackcollapse.py script as an example of parsing call chains, and also of using optparse to access command line options. The flame graph tools include a set of scripts that parse output from various tools (including "perf script"), remove the offsets in the function and collapse each stack to a single line. The website also says "perf report could have a report style [...] that output folded stacks directly, obviating the need for stackcollapse-perf.pl", so here it is. This script is a Python rewrite of stackcollapse-perf.pl, using the perf scripting interface to access the perf data directly from Python. Signed-off-by: Paolo Bonzini Acked-by: Jiri Olsa Cc: Brendan Gregg Link: http://lkml.kernel.org/r/1460467573-22989-1-git-send-email-pbonzini@redhat.com Signed-off-by: Arnaldo Carvalho de Melo

perf script: Update export-to-postgresql to support callchain export

2016-05-06T16:00:55Z

Update the export-to-postgresql.py to support the newly introduced callchain export. callchains are added into the existing call_paths table and can now be associated with samples when the "callpaths" commandline option is used with the script. Ex.: $ perf script -s export-to-postgresql.py example_db all callchains Includes the following changes to enable callchain export via the python export APIs: - Add the "callchains" commandline option, which is used to enable callchain export by setting the perf_db_export_callchains global - Add perf_db_export_callchains checks for call_path table creation and population. - Add call_path_id to samples_table to conform with the new API example usage and output using a small test app: test_app.c: volatile int x = 0; void inc_x_loop() { int i; for(i=0; i<100000000; i++) x++; } void a() { inc_x_loop(); } void b() { inc_x_loop(); } int main() { a(); b(); return 0; } example usage: $ gcc -g -O0 test_app.c $ perf record --call-graph=dwarf ./a.out [ perf record: Woken up 77 times to write data ] [ perf record: Captured and wrote 19.373 MB perf.data (2404 samples) ] $ perf script -s scripts/python/export-to-postgresql.py example_db all callchains $ psql example_db example_db=# SELECT (SELECT name FROM symbols WHERE id = cps.symbol_id) as symbol, (SELECT name FROM symbols WHERE id = (SELECT symbol_id from call_paths where id = cps.parent_id)) as parent_symbol, sum(period) as event_count FROM samples join call_paths as cps on call_path_id = cps.id GROUP BY cps.id,evsel_id ORDER BY event_count DESC LIMIT 5; symbol | parent_symbol | event_count ------------------+--------------------------+------------- inc_x_loop | a | 734250982 inc_x_loop | b | 731028057 unknown | unknown | 1335858 task_tick_fair | scheduler_tick | 1238842 update_wall_time | tick_do_update_jiffies64 | 650373 (5 rows) The above data shows total "self time" in cycles for each call path that was sampled. It is intended to demonstrate how it accounts separately for the two ways to reach the "inc_x_loop" function(via "a" and "b"). Recursive common table expressions can be used as well to get cumulative time spent in a function as well, but that is beyond the scope of this basic example. Signed-off-by: Chris Phlipot Acked-by: Adrian Hunter Cc: Jiri Olsa Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1461831551-12213-7-git-send-email-cphlipot0@gmail.com Signed-off-by: Arnaldo Carvalho de Melo

perf script: Fix postgresql ubuntu install instructions

2016-04-19T15:36:54Z

The current instructions for setting up an Ubuntu system for using the export-to-postgresql.py script are incorrect. The instructions in the script have been updated to work on newer versions of ubuntu. -Add missing dependencies to apt-get command: python-pyside.qtsql, libqt4-sql-psql -Add '-s' option to createuser command to force the user to be a superuser since the command doesn't prompt as indicated in the current instructions. Tested on: Ubuntu 14.04, Ubuntu 16.04(beta) Signed-off-by: Chris Phlipot Cc: Adrian Hunter Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1461056164-14914-3-git-send-email-cphlipot0@gmail.com Signed-off-by: Arnaldo Carvalho de Melo

perf python scripting: Append examples to err msg about audit-libs-python

2016-02-12T14:30:27Z

To print syscall names, the audit-libs-python package is required.. If not installed, it prints this error string: # perf script syscall-counts Install the audit-libs-python package to get syscall names. But the package name is different in Ubuntu, mention that in the error message, similar to a error message of util/trace-event-scripting.c: # perf script syscall-counts Install the audit-libs-python package to get syscall names. For example: # apt-get install python-audit (Ubuntu) # yum install audit-libs-python (Fedora) etc. Signed-off-by: Taeung Song Cc: Jiri Olsa Cc: Namhyung Kim Link: http://lkml.kernel.org/r/1455018790-13425-1-git-send-email-treeze.taeung@gmail.com Signed-off-by: Arnaldo Carvalho de Melo

perf script: Add stat-cpi.py script

2016-01-06T23:11:16Z

Adding stat-cpi.py as an example of how to do stat scripting. It computes the CPI metrics from cycles and instructions events. The CPI is based performance metric showing the Cycles Per Instructions ratio, which helps to identify cycles-hungry code. Following stat record/report/script combinations could be used: - get CPI for given workload $ perf stat -e cycles,instructions record ls SNIP Performance counter stats for 'ls': 2,904,431 cycles 3,346,878 instructions # 1.15 insns per cycle 0.001782686 seconds time elapsed $ perf script -s ./scripts/python/stat-cpi.py 0.001783: cpu -1, thread -1 -> cpi 0.867803 (2904431/3346878) $ perf stat -e cycles,instructions record ls | perf script -s ./scripts/python/stat-cpi.py SNIP 0.001730: cpu -1, thread -1 -> cpi 0.869026 (2928292/3369627) - get CPI systemwide: $ perf stat -e cycles,instructions -a -I 1000 record sleep 3 # time counts unit events 1.000158618 594,274,711 cycles (100.00%) 1.000158618 441,898,250 instructions 2.000350973 567,649,705 cycles (100.00%) 2.000350973 432,669,206 instructions 3.000559210 561,940,430 cycles (100.00%) 3.000559210 420,403,465 instructions 3.000670798 780,105 cycles (100.00%) 3.000670798 326,516 instructions $ perf script -s ./scripts/python/stat-cpi.py 1.000159: cpu -1, thread -1 -> cpi 1.344823 (594274711/441898250) 2.000351: cpu -1, thread -1 -> cpi 1.311972 (567649705/432669206) 3.000559: cpu -1, thread -1 -> cpi 1.336669 (561940430/420403465) 3.000671: cpu -1, thread -1 -> cpi 2.389178 (780105/326516) $ perf stat -e cycles,instructions -a -I 1000 record sleep 3 | perf script -s ./scripts/python/stat-cpi.py 1.000202: cpu -1, thread -1 -> cpi 1.035091 (940778881/908885530) 2.000392: cpu -1, thread -1 -> cpi 1.442600 (627493992/434974455) 3.000545: cpu -1, thread -1 -> cpi 1.353612 (741463930/547766890) 3.000622: cpu -1, thread -1 -> cpi 2.642110 (784083/296764) Signed-off-by: Jiri Olsa Tested-by: Arnaldo Carvalho de Melo Tested-by: Kan Liang Cc: David Ahern Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1452077397-31958-4-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo