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2017-10-05selftests: mqueue: fix regression in silencing output from RUN_TESTSShuah Khan1-2/+2
Fix fix regression in silencing output from RUN_TESTS introduced by commit <8230b905a6780c6> selftests: mqueue: Use full path to run tests from Makefile Signed-off-by: Shuah Khan <[email protected]>
2017-10-05selftests: x86: sysret_ss_attrs doesn't build on a PIE buildShuah Khan1-1/+1
sysret_ss_attrs fails to compile leading x86 test run to fail on systems configured to build using PIE by default. Add -no-pie fix it. Relocation might still fail if relocated above 4G. For now this change fixes the build and runs x86 tests. tools/testing/selftests/x86$ make gcc -m64 -o .../tools/testing/selftests/x86/single_step_syscall_64 -O2 -g -std=gnu99 -pthread -Wall single_step_syscall.c -lrt -ldl gcc -m64 -o .../tools/testing/selftests/x86/sysret_ss_attrs_64 -O2 -g -std=gnu99 -pthread -Wall sysret_ss_attrs.c thunks.S -lrt -ldl /usr/bin/ld: /tmp/ccS6pvIh.o: relocation R_X86_64_32S against `.text' can not be used when making a shared object; recompile with -fPIC /usr/bin/ld: final link failed: Nonrepresentable section on output collect2: error: ld returned 1 exit status Makefile:49: recipe for target '.../tools/testing/selftests/x86/sysret_ss_attrs_64' failed make: *** [.../tools/testing/selftests/x86/sysret_ss_attrs_64] Error 1 Suggested-by: Andy Lutomirski <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2017-10-05perf callchain: Compare dsos (as well) for CCKEY_FUNCTIONRavi Bangoria1-1/+5
Two functions from different binaries can have same start address. Thus, comparing only start address in match_chain() leads to inconsistent callchains. Fix this by adding a check for dsos as well. Ex, https://www.spinics.net/lists/linux-perf-users/msg04067.html Reported-by: Alexander Pozdneev <[email protected]> Signed-off-by: Ravi Bangoria <[email protected]> Acked-by: Jiri Olsa <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Krister Johansen <[email protected]> Cc: Milian Wolff <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Yao Jin <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-10-04tools: bpftool: add documentationJakub Kicinski5-0/+263
Add documentation for bpftool. Separate files for each subcommand. Use rst format. Documentation is compiled into man pages using rst2man. Signed-off-by: David Beckett <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-10-04tools: bpf: add bpftoolJakub Kicinski8-3/+1909
Add a simple tool for querying and updating BPF objects on the system. Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Simon Horman <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-10-04tools: rename tools/net directory to tools/bpfJakub Kicinski7-7/+7
We currently only have BPF tools in the tools/net directory. We are about to add more BPF tools there, not necessarily networking related, rename the directory and related Makefile targets to bpf. Suggested-by: Daniel Borkmann <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Simon Horman <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-10-04libbpf: add support for BPF_PROG_QUERYAlexei Starovoitov2-1/+22
add support for BPF_PROG_QUERY command to libbpf Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-10-04libbpf: sync bpf.hAlexei Starovoitov1-3/+52
tools/include/uapi/linux/bpf.h got out of sync with actual kernel header. Update it. Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-10-04libbpf: introduce bpf_prog_detach2()Alexei Starovoitov2-0/+13
introduce bpf_prog_detach2() that takes one more argument prog_fd vs bpf_prog_detach() that takes only attach_fd and type. Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-10-04bpf: enforce return code for cgroup-bpf programsAlexei Starovoitov1-0/+72
with addition of tnum logic the verifier got smart enough and we can enforce return codes at program load time. For now do so for cgroup-bpf program types. Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-10-04selftests: rtnetlink: try concurrent change of ifaliasFlorian Westphal1-0/+6
to make sure this is serialized correctly. Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-10-04usbip: tools: Install all headers needed for libusbip developmentBen Hutchings1-1/+2
usbip_host_driver.h now depends on several additional headers, which need to be installed along with it. Fixes: 021aed845303 ("staging: usbip: userspace: migrate usbip_host_driver ...") Fixes: 3391ba0e2792 ("usbip: tools: Extract generic code to be shared with ...") Signed-off-by: Ben Hutchings <[email protected]> Acked-by: Shuah Khan <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2017-10-04ACPICA: Restructure/cleanup all string-to-integer conversion functionsBob Moore3-5/+3
ACPICA commit 610046d444ad781cc36673bf1f030abe50cbc61f Improve adherence to ACPI spec for implicit and explicit conversions Adds octal support for constants in ASL code Adds integer overflow errors for constants during ASL compilation Eliminates most of the existing complex flags parameters Simplify support for implicit/explicit runtime conversions Adds one new file, utilities/utstrsuppt.c Link: https://github.com/acpica/acpica/commit/610046d444ad Signed-off-by: Bob Moore <[email protected]> Signed-off-by: Lv Zheng <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]>
2017-10-03perf tests attr: Fix group stat testsJiri Olsa2-0/+4
We started to use group read whenever it's possible: 82bf311e15d2 perf stat: Use group read for event groups That breaks some of attr tests, this change adds the new possible read_format value. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: Hendrik Brueckner <[email protected]> Cc: Martin Schwidefsky <[email protected]> Cc: Thomas-Mich Richter <[email protected]> LPU-Reference: 20170928160633.GA26973@krava Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-10-03perf top: Add option to set the number of thread for event synthesizeKan Liang4-4/+16
Using UINT_MAX to indicate the default thread#, which is the max number of online CPU. Committer testing: # perf trace --no-inherit -e clone -o /tmp/output perf top --num-thread-synthesize 9 # cat /tmp/output ? ( ? ): ... [continued]: clone()) = 26651 (perf) 0.059 ( 0.010 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7f5bfac44f30, parent_tidptr: 0x7f5bfac459d0, child_tidptr: 0x7f5bfac459d0, tls: 0x7f5bfac45700) = 26652 (perf) 0.116 ( 0.014 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7f5bfa443f30, parent_tidptr: 0x7f5bfa4449d0, child_tidptr: 0x7f5bfa4449d0, tls: 0x7f5bfa444700) = 26653 (perf) 0.141 ( 0.009 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7f5bf9c42f30, parent_tidptr: 0x7f5bf9c439d0, child_tidptr: 0x7f5bf9c439d0, tls: 0x7f5bf9c43700) = 26654 (perf) 0.160 ( 0.012 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7f5bf9441f30, parent_tidptr: 0x7f5bf94429d0, child_tidptr: 0x7f5bf94429d0, tls: 0x7f5bf9442700) = 26655 (perf) 0.232 ( 0.013 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7f5bf8c40f30, parent_tidptr: 0x7f5bf8c419d0, child_tidptr: 0x7f5bf8c419d0, tls: 0x7f5bf8c41700) = 26656 (perf) 0.393 ( 0.011 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7f5be3ffef30, parent_tidptr: 0x7f5be3fff9d0, child_tidptr: 0x7f5be3fff9d0, tls: 0x7f5be3fff700) = 26657 (perf) 0.802 ( 0.012 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7f5be37fdf30, parent_tidptr: 0x7f5be37fe9d0, child_tidptr: 0x7f5be37fe9d0, tls: 0x7f5be37fe700) = 26658 (perf) 1.411 ( 0.022 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7f5be2ffcf30, parent_tidptr: 0x7f5be2ffd9d0, child_tidptr: 0x7f5be2ffd9d0, tls: 0x7f5be2ffd700) = 26659 (perf) 246.422 ( 0.042 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7f5be2ffcf30, parent_tidptr: 0x7f5be2ffd9d0, child_tidptr: 0x7f5be2ffd9d0, tls: 0x7f5be2ffd700) = 26660 (perf) # Signed-off-by: Kan Liang <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Acked-by: Jiri Olsa <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Andi Kleen <[email protected]> Cc: He Kuang <[email protected]> Cc: Lukasz Odzioba <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-10-03perf top: Implement multithreading for perf_event__synthesize_threadsKan Liang9-42/+155
The proc files which is sorted with alphabetical order are evenly assigned to several synthesize threads to be processed in parallel. For 'perf top', the threads number hard code to online CPU number. The following patch will introduce an option to set it. For other perf tools, the thread number is 1. Because the process function is not ready for multithreading, e.g. process_synthesized_event. This patch series only support event synthesize multithreading for 'perf top'. For other tools, it can be done separately later. With multithread applied, the total processing time can get up to 1.56x speedup on Knights Mill for 'perf top'. For specific single event processing, the processing time could increase because of the lock contention. So proc_map_timeout may need to be increased. Otherwise some proc maps will be truncated. Based on my test, increasing the proc_map_timeout has small impact on the total processing time. The total processing time still get 1.49x speedup on Knights Mill after increasing the proc_map_timeout. The patch itself doesn't increase the proc_map_timeout. Doesn't need to implement multithreading for per task monitoring, perf_event__synthesize_thread_map. It doesn't have performance issue. Committer testing: # getconf _NPROCESSORS_ONLN 4 # perf trace --no-inherit -e clone -o /tmp/output perf top # tail -4 /tmp/bla 0.124 ( 0.041 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7fc3eb3a8f30, parent_tidptr: 0x7fc3eb3a99d0, child_tidptr: 0x7fc3eb3a99d0, tls: 0x7fc3eb3a9700) = 9548 (perf) 0.246 ( 0.023 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7fc3eaba7f30, parent_tidptr: 0x7fc3eaba89d0, child_tidptr: 0x7fc3eaba89d0, tls: 0x7fc3eaba8700) = 9549 (perf) 0.286 ( 0.019 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7fc3ea3a6f30, parent_tidptr: 0x7fc3ea3a79d0, child_tidptr: 0x7fc3ea3a79d0, tls: 0x7fc3ea3a7700) = 9550 (perf) 246.540 ( 0.047 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7fc3ea3a6f30, parent_tidptr: 0x7fc3ea3a79d0, child_tidptr: 0x7fc3ea3a79d0, tls: 0x7fc3ea3a7700) = 9551 (perf) # Signed-off-by: Kan Liang <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Acked-by: Jiri Olsa <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Andi Kleen <[email protected]> Cc: He Kuang <[email protected]> Cc: Lukasz Odzioba <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-10-03perf tools: Lock to protect comm_str rb treeKan Liang1-1/+17
Add comm_str_lock to protect comm_str rb tree. The lock is only needed for multithreaded code, so using mutex wrappers provided by perf tool. Signed-off-by: Kan Liang <[email protected]> Acked-by: Jiri Olsa <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Andi Kleen <[email protected]> Cc: He Kuang <[email protected]> Cc: Lukasz Odzioba <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-10-03perf tools: Lock to protect namespaces and comm listKan Liang2-5/+51
Add two locks to protect namespaces_list and comm_list. The lock is only needed for multithreaded code, so using mutex wrappers provided by perf tool. Not all the comm_list/namespaces_list accessing are protected, e.g. thread__exec_comm. Because the multithread code for perf top event synthesizing does not touch them. They don't need a lock. Signed-off-by: Kan Liang <[email protected]> Acked-by: Jiri Olsa <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Andi Kleen <[email protected]> Cc: He Kuang <[email protected]> Cc: Lukasz Odzioba <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-10-02selftests: rtnetlink.sh: add vxlan and fou test casesFlorian Westphal1-0/+96
fou test lifted from ip-fou man page. Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-10-02perf test attr: Fix ignored test case resultThomas Richter1-1/+1
Command perf test -v 16 (Setup struct perf_event_attr test) always reports success even if the test case fails. It works correctly if you also specify -F (for don't fork). root@s35lp76 perf]# ./perf test -v 16 15: Setup struct perf_event_attr : --- start --- running './tests/attr/test-record-no-delay' [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.002 MB /tmp/tmp4E1h7R/perf.data (1 samples) ] expected task=0, got 1 expected precise_ip=0, got 3 expected wakeup_events=1, got 0 FAILED './tests/attr/test-record-no-delay' - match failure test child finished with 0 ---- end ---- Setup struct perf_event_attr: Ok The reason for the wrong error reporting is the return value of the system() library call. It is called in run_dir() file tests/attr.c and returns the exit status, in above case 0xff00. This value is given as parameter to the exit() function which can only handle values 0-0xff. The child process terminates with exit value of 0 and the parent does not detect any error. This patch corrects the error reporting and prints the correct test result. Signed-off-by: Thomas-Mich Richter <[email protected]> Acked-by: Jiri Olsa <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: Hendrik Brueckner <[email protected]> Cc: Martin Schwidefsky <[email protected]> Cc: Thomas-Mich Richter <[email protected]> LPU-Reference: [email protected] Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-10-02perf test attr: Fix python error on empty resultThomas Richter1-1/+5
Commit d78ada4a767 ("perf tests attr: Do not store failed events") does not create an event file in the /tmp directory when the perf_open_event() system call failed. This can lead to a situation where not /tmp/event-xx-yy-zz result file exists at all (for example on a s390x virtual machine environment) where no CPUMF hardware is available. The following command then fails with a python call back chain instead of printing failure: [root@s8360046 perf]# /usr/bin/python2 ./tests/attr.py -d ./tests/attr/ \ -p ./perf -v -ttest-stat-basic running './tests/attr//test-stat-basic' Traceback (most recent call last): File "./tests/attr.py", line 379, in <module> main() File "./tests/attr.py", line 370, in main run_tests(options) File "./tests/attr.py", line 311, in run_tests Test(f, options).run() File "./tests/attr.py", line 300, in run self.compare(self.expect, self.result) File "./tests/attr.py", line 248, in compare exp_event.diff(res_event) UnboundLocalError: local variable 'res_event' referenced before assignment [root@s8360046 perf]# This patch catches this pitfall and prints an error message instead: [root@s8360047 perf]# /usr/bin/python2 ./tests/attr.py -d ./tests/attr/ \ -p ./perf -vvv -ttest-stat-basic running './tests/attr//test-stat-basic' loading expected events Event event:base-stat fd = 1 group_fd = -1 flags = 0|8 [....] sample_regs_user = 0 sample_stack_user = 0 'PERF_TEST_ATTR=/tmp/tmpJbMQMP ./perf stat -o /tmp/tmpJbMQMP/perf.data -e cycles kill >/dev/null 2>&1' ret '1', expected '1' loading result events compare matching [event:base-stat] match: [event:base-stat] matches [] res_event is empty FAILED './tests/attr//test-stat-basic' - match failure [root@s8360047 perf]# Signed-off-by: Thomas-Mich Richter <[email protected]> Acked-by: Jiri Olsa <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: Hendrik Brueckner <[email protected]> Cc: Martin Schwidefsky <[email protected]> Cc: Thomas-Mich Richter <[email protected]> LPU-Reference: [email protected] Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-10-02perf tests attr: Fix task term valuesJiri Olsa4-2/+4
The perf_event_attr::task is 1 by default for first (tracking) event in the session. Setting task=1 as default and adding task=0 for cases that need it. Signed-off-by: Jiri Olsa <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas-Mich Richter <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-10-02Merge remote-tracking branch 'tip/perf/urgent' into perf/core, to pick up fixesArnaldo Carvalho de Melo16-73/+190
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-10-01Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds18-169/+195
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Thomas Gleixner: - Prevent a division by zero in the perf aux buffer handling - Sync kernel headers with perf tool headers - Fix a build failure in the syscalltbl code - Make the debug messages of perf report --call-graph work correctly - Make sure that all required perf files are in the MANIFEST for container builds - Fix the atrr.exclude kernel handling so it respects the perf_event_paranoid and the user permissions - Make perf test on s390x work correctly * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/aux: Only update ->aux_wakeup in non-overwrite mode perf test: Fix vmlinux failure on s390x part 2 perf test: Fix vmlinux failure on s390x perf tools: Fix syscalltbl build failure perf report: Fix debug messages with --call-graph option perf evsel: Fix attr.exclude_kernel setting for default cycles:p tools include: Sync kernel ABI headers with tooling headers perf tools: Get all of tools/{arch,include}/ in the MANIFEST
2017-09-29Merge tag 'perf-urgent-for-mingo-4.14-20170928' of ↵Ingo Molnar18-169/+195
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/urgent fixes from Arnaldo Carvalho de Melo: - Fix syscalltbl build failure (Akemi Yagi) - Fix attr.exclude_kernel setting for default cycles:p, this time for !root with kernel.perf_event_paranoid = -1 (Arnaldo Carvalho de Melo) - Sync kernel ABI headers with tooling headers (Ingo Molnar) - Remove misleading debug messages with --call-graph option (Mengting Zhang) - Revert vmlinux symbol resolution patches for s390x (Thomas Richter) Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2017-09-29bpf: Test new fields in bpf_attr and bpf_{prog, map}_infoMartin KaFai Lau1-11/+132
This patch tests newly added fields of the bpf_attr, bpf_prog_info and bpf_map_info. Signed-off-by: Martin KaFai Lau <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-09-29bpf: Swap the order of checking prog_info and map_infoMartin KaFai Lau1-28/+30
This patch swaps the checking order. It now checks the map_info first and then prog_info. It is a prep work for adding test to the newly added fields (the map_ids of prog_info field in particular). Signed-off-by: Martin KaFai Lau <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-09-29bpf: libbpf: Provide basic API support to specify BPF obj nameMartin KaFai Lau5-47/+154
This patch extends the libbpf to provide API support to allow specifying BPF object name. In tools/lib/bpf/libbpf, the C symbol of the function and the map is used. Regarding section name, all maps are under the same section named "maps". Hence, section name is not a good choice for map's name. To be consistent with map, bpf_prog also follows and uses its function symbol as the prog's name. This patch adds logic to collect function's symbols in libbpf. There is existing codes to collect the map's symbols and no change is needed. The bpf_load_program_name() and bpf_map_create_name() are added to take the name argument. For the other bpf_map_create_xxx() variants, a name argument is directly added to them. In samples/bpf, bpf_load.c in particular, the symbol is also used as the map's name and the map symbols has already been collected in the existing code. For bpf_prog, bpf_load.c does not collect the function symbol name. We can consider to collect them later if there is a need to continue supporting the bpf_load.c. Signed-off-by: Martin KaFai Lau <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-09-28selftests: rtnetlink.sh: add rudimentary vrf testFlorian Westphal1-0/+42
Acked-by: David Ahern <[email protected]> Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-09-28nfit_test Make private definitions to command emulationYasunori Goto1-0/+47
Move private definitions to command emulation. These definitions were originally defined at include/uapi/linux/ndctl.h, but they are used at only nfit_test emulation now. Signed-off-by: Yasunori Goto <[email protected]> Reviewed-by: Vishal Verma <[email protected]> Signed-off-by: Dan Williams <[email protected]>
2017-09-28perf test: Fix vmlinux failure on s390x part 2Thomas Richter2-22/+0
On s390x perf test 1 failed. It turned out that commit cf6383f73cf2 ("perf report: Fix kernel symbol adjustment for s390x") was incorrect. The previous implementation in dso__load_sym() is also suitable for s390x. Therefore this patch undoes commit cf6383f73cf2 Signed-off-by: Thomas-Mich Richter <[email protected]> Cc: Zvonko Kosic <[email protected]> Cc: Hendrik Brueckner <[email protected]> Fixes: cf6383f73cf2 ("perf report: Fix kernel symbol adjustment for s390x") LPU-Reference: [email protected] Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-09-28perf test: Fix vmlinux failure on s390xThomas Richter3-18/+1
On s390x perf test 1 failed. It turned out that commit 4a084ecfc821 ("perf report: Fix module symbol adjustment for s390x") was incorrect. The previous implementation in dso__load_sym() is also suitable for s390x. Therefore this patch undoes commit 4a084ecfc821. Signed-off-by: Thomas-Mich Richter <[email protected]> Cc: Hendrik Brueckner <[email protected]> Cc: Zvonko Kosic <[email protected]> Fixes: 4a084ecfc821 ("perf report: Fix module symbol adjustment for s390x") LPU-Reference: [email protected] Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-09-28Merge drm-upstream/drm-next into drm-intel-next-queuedJani Nikula451-7645/+30844
Need MST sideband message transaction to power up/down nodes. Signed-off-by: Jani Nikula <[email protected]>
2017-09-28objtool: Don't report end of section error after an empty unwind hintJosh Poimboeuf1-2/+5
If asm code specifies an UNWIND_HINT_EMPTY hint, don't warn if the section ends unexpectedly. This can happen with the xen-head.S code because the hypercall_page is "text" but it's all zeros. Signed-off-by: Josh Poimboeuf <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Boris Ostrovsky <[email protected]> Cc: Jiri Slaby <[email protected]> Cc: Juergen Gross <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Link: http://lkml.kernel.org/r/ddafe199dd8797e40e3c2777373347eba1d65572.1505764066.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <[email protected]>
2017-09-28Merge branch 'linus' into perf/core, to refresh the branchIngo Molnar26-189/+906
Signed-off-by: Ingo Molnar <[email protected]>
2017-09-28objtool: Support unoptimized frame pointer setupJosh Poimboeuf1-3/+8
Arnd Bergmann reported a bunch of warnings like: crypto/jitterentropy.o: warning: objtool: jent_fold_time()+0x3b: call without frame pointer save/setup crypto/jitterentropy.o: warning: objtool: jent_stuck()+0x1d: call without frame pointer save/setup crypto/jitterentropy.o: warning: objtool: jent_unbiased_bit()+0x15: call without frame pointer save/setup crypto/jitterentropy.o: warning: objtool: jent_read_entropy()+0x32: call without frame pointer save/setup crypto/jitterentropy.o: warning: objtool: jent_entropy_collector_free()+0x19: call without frame pointer save/setup and arch/x86/events/core.o: warning: objtool: collect_events uses BP as a scratch register arch/x86/events/core.o: warning: objtool: events_ht_sysfs_show()+0x22: call without frame pointer save/setup With certain rare configurations, GCC sometimes sets up the frame pointer with: lea (%rsp),%rbp instead of: mov %rsp,%rbp The instructions are equivalent, so treat the former like the latter. Reported-by: Arnd Bergmann <[email protected]> Signed-off-by: Josh Poimboeuf <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Link: http://lkml.kernel.org/r/a468af8b28a69b83fffc6d7668be9b6fcc873699.1506526584.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <[email protected]>
2017-09-27Merge tag 'linux-kselftest-4.14-rc3-fixes' of ↵Linus Torvalds20-65/+245
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kselftest fixes from Shuah Khan: "This update consists of: - fixes to several existing tests - a test for regression introduced by b9470c27607b ("inet: kill smallest_size and smallest_port") - seccomp support for glibc 2.26 siginfo_t.h - fixes to kselftest framework and tests to run make O=dir use-case - fixes to silence unnecessary test output to de-clutter test results" * tag 'linux-kselftest-4.14-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (28 commits) selftests: timers: set-timer-lat: Fix hang when testing unsupported alarms selftests: timers: set-timer-lat: fix hang when std out/err are redirected selftests/memfd: correct run_tests.sh permission selftests/seccomp: Support glibc 2.26 siginfo_t.h selftests: futex: Makefile: fix for loops in targets to run silently selftests: Makefile: fix for loops in targets to run silently selftests: mqueue: Use full path to run tests from Makefile selftests: futex: copy sub-dir test scripts for make O=dir run selftests: lib.mk: copy test scripts and test files for make O=dir run selftests: sync: kselftest and kselftest-clean fail for make O=dir case selftests: sync: use TEST_CUSTOM_PROGS instead of TEST_PROGS selftests: lib.mk: add TEST_CUSTOM_PROGS to allow custom test run/install selftests: watchdog: fix to use TEST_GEN_PROGS and remove clean selftests: lib.mk: fix test executable status check to use full path selftests: Makefile: clear LDFLAGS for make O=dir use-case selftests: lib.mk: kselftest and kselftest-clean fail for make O=dir case Makefile: kselftest and kselftest-clean fail for make O=dir case selftests/net: msg_zerocopy enable build with older kernel headers selftests: actually run the various net selftests selftest: add a reuseaddr test ...
2017-09-26bpf: improve selftests and add tests for meta pointerDaniel Borkmann5-4/+370
Add various test_verifier selftests, and a simple xdp/tc functional test that is being attached to veths. Also let new versions of clang use the recently added -mcpu=probe support [1] for the BPF target, so that it can probe the underlying kernel for BPF insn set extensions. We could also just set this options always, where older versions just ignore it and give a note to the user that the -mcpu value is not supported, but given emitting the note cannot be turned off from clang side lets not confuse users running selftests with it, thus fallback to the default generic one when we see that clang doesn't support it. Also allow CPU option to be overridden in the Makefile from command line. [1] https://github.com/llvm-mirror/llvm/commit/d7276a40d87b89aed89978dec6457a5b8b3a0db5 Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Acked-by: John Fastabend <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-09-26bpf: update bpf.h uapi header for toolsDaniel Borkmann1-13/+32
Looks like a couple of updates missed to get carried into tools/include/uapi/, so copy the bpf.h header as usual to pull in latest updates. Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Acked-by: John Fastabend <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-09-25selftests: timers: set-timer-lat: Fix hang when testing unsupported alarmsShuah Khan1-3/+6
When timer_create() fails on a bootime or realtime clock, setup_timer() returns 0 as if timer has been set. Callers wait forever for the timer to expire. This hang is seen on a system that doesn't have support for: CLOCK_REALTIME_ALARM ABSTIME missing CAP_WAKE_ALARM? : [UNSUPPORTED] Test hangs waiting for a timer that hasn't been set to expire. Fix setup_timer() to return 1, add handling in callers to detect the unsupported case and return 0 without waiting to not fail the test. Signed-off-by: Shuah Khan <[email protected]>
2017-09-25selftests: timers: set-timer-lat: fix hang when std out/err are redirectedShuah Khan1-3/+1
do_timer_oneshot() uses select() as a timer with FD_SETSIZE and readfs is cleared with FD_ZERO without FD_SET. When stdout and stderr are redirected, the test hangs in select forever. Fix the problem calling select() with readfds empty and nfds zero. This is sufficient for using select() for timer. With this fix "./set-timer-lat > /dev/null 2>&1" no longer hangs. Signed-off-by: Shuah Khan <[email protected]> Acked-by: Greg Hackmann <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2017-09-25selftests/memfd: correct run_tests.sh permissionLi Zhijian1-0/+0
to fix the following issue: ------------------ TAP version 13 selftests: run_tests.sh ======================================== selftests: Warning: file run_tests.sh is not executable, correct this. not ok 1..1 selftests: run_tests.sh [FAIL] ------------------ Signed-off-by: Li Zhijian <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2017-09-25selftests/seccomp: Support glibc 2.26 siginfo_t.hKees Cook1-5/+13
The 2.26 release of glibc changed how siginfo_t is defined, and the earlier work-around to using the kernel definition are no longer needed. The old way needs to stay around for a while, though. Reported-by: Seth Forshee <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Will Drewry <[email protected]> Cc: Shuah Khan <[email protected]> Cc: [email protected] Cc: [email protected] Signed-off-by: Kees Cook <[email protected]> Tested-by: Seth Forshee <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2017-09-25selftests: futex: Makefile: fix for loops in targets to run silentlyShuah Khan1-3/+3
Fix for loops in targets to run silently to avoid cluttering the test results. Suppresses the following from targets: for DIR in functional; do \ BUILD_TARGET=./tools/testing/selftests/futex/$DIR; \ mkdir $BUILD_TARGET -p; \ make OUTPUT=$BUILD_TARGET -C $DIR all;\ done ./tools/testing/selftests/futex/run.sh Signed-off-by: Shuah Khan <[email protected]> Reviewed-by: Darren Hart (VMware) <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2017-09-25selftests: Makefile: fix for loops in targets to run silentlyShuah Khan1-7/+7
Fix for loops in targets to run silently to avoid cluttering the test results. Suppresses the following from targets: e.g run from breakpoints for TARGET in breakpoints; do \ BUILD_TARGET=$BUILD/$TARGET; \ mkdir $BUILD_TARGET -p; \ make OUTPUT=$BUILD_TARGET -C $TARGET;\ done; Signed-off-by: Shuah Khan <[email protected]>
2017-09-25selftests: mqueue: Use full path to run tests from MakefileShuah Khan1-2/+2
Use full path including $(OUTPUT) to run tests from Makefile for normal case when objects reside in the source tree as well as when objects are relocated with make O=dir. In both cases $(OUTPUT) will be set correctly by lib.mk. Signed-off-by: Shuah Khan <[email protected]>
2017-09-25selftests: futex: copy sub-dir test scripts for make O=dir runShuah Khan1-1/+4
For make O=dir run_tests to work, test scripts from sub-directories need to be copied over to the object directory. Running tests from the object directory is necessary to avoid making the source tree dirty. Signed-off-by: Shuah Khan <[email protected]> Reviewed-by: Darren Hart (VMware) <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2017-09-25perf tools: Fix syscalltbl build failureAkemi Yagi1-1/+1
The build of kernel v4.14-rc1 for i686 fails on RHEL 6 with the error in tools/perf: util/syscalltbl.c:157: error: expected ';', ',' or ')' before '__maybe_unused' mv: cannot stat `util/.syscalltbl.o.tmp': No such file or directory Fix it by placing/moving: #include <linux/compiler.h> outside of #ifdef HAVE_SYSCALL_TABLE block. Signed-off-by: Akemi Yagi <[email protected]> Cc: Alan Bartlett <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-09-25perf report: Fix debug messages with --call-graph optionMengting Zhang1-14/+21
With --call-graph option, perf report can display call chains using type, min percent threshold, optional print limit and order. And the default call-graph parameter is 'graph,0.5,caller,function,percent'. Before this patch, 'perf report --call-graph' shows incorrect debug messages as below: # perf report --call-graph Invalid callchain mode: 0.5 Invalid callchain order: 0.5 Invalid callchain sort key: 0.5 Invalid callchain config key: 0.5 Invalid callchain mode: caller Invalid callchain mode: function Invalid callchain order: function Invalid callchain mode: percent Invalid callchain order: percent Invalid callchain sort key: percent That is because in function __parse_callchain_report_opt(),each field of the call-graph parameter is passed to parse_callchain_{mode,order, sort_key,value} in turn until it meets the matching value. For example, the order field "caller" is passed to parse_callchain_mode() firstly and obviously it doesn't match any mode field. Therefore parse_callchain_mode() will shows the debug message "Invalid callchain mode: caller", which could confuse users. The patch fixes this issue by moving the warning out of the function parse_callchain_{mode,order,sort_key,value}. Signed-off-by: Mengting Zhang <[email protected]> Acked-by: Jiri Olsa <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Krister Johansen <[email protected]> Cc: Li Bin <[email protected]> Cc: Milian Wolff <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Wang Nan <[email protected]> Cc: Yao Jin <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2017-09-25perf evsel: Fix attr.exclude_kernel setting for default cycles:pArnaldo Carvalho de Melo1-1/+6
Yet another fix for probing the max attr.precise_ip setting: it is not enough settting attr.exclude_kernel for !root users, as they _can_ profile the kernel if the kernel.perf_event_paranoid sysctl is set to -1, so check that as well. Testing it: As non root: $ sysctl kernel.perf_event_paranoid kernel.perf_event_paranoid = 2 $ perf record sleep 1 $ perf evlist -v cycles:uppp: ..., exclude_kernel: 1, ... precise_ip: 3, ... Now as non-root, but with kernel.perf_event_paranoid set set to the most permissive value, -1: $ sysctl kernel.perf_event_paranoid kernel.perf_event_paranoid = -1 $ perf record sleep 1 $ perf evlist -v cycles:ppp: ..., exclude_kernel: 0, ... precise_ip: 3, ... $ I.e. non-root, default kernel.perf_event_paranoid: :uppp modifier = not allowed to sample the kernel, non-root, most permissible kernel.perf_event_paranoid: :ppp = allowed to sample the kernel. In both cases, use the highest available precision: attr.precise_ip = 3. Reported-and-Tested-by: Ingo Molnar <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Fixes: d37a36979077 ("perf evsel: Fix attr.exclude_kernel setting for default cycles:p") Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
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