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2017-08-28selftests/bpf: check the instruction dumps are populatedJakub Kicinski
Add a basic test for checking whether kernel is populating the jited and xlated BPF images. It was used to confirm the behaviour change from commit d777b2ddbecf ("bpf: don't zero out the info struct in bpf_obj_get_info_by_fd()"), which made bpf_obj_get_info_by_fd() usable for retrieving the image dumps. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28perf trace beauty: Beautify pkey_{alloc,free,mprotect} argumentsArnaldo Carvalho de Melo
Reuse 'mprotect' beautifiers for 'pkey_mprotect'. System wide tracing pkey_alloc, pkey_free and pkey_mprotect calls, with backtraces: # perf trace -e pkey_alloc,pkey_mprotect,pkey_free --max-stack=5 0.000 ( 0.011 ms): pkey/7818 pkey_alloc(init_val: DISABLE_ACCESS|DISABLE_WRITE) = -1 EINVAL Invalid argument syscall (/usr/lib64/libc-2.25.so) pkey_alloc (/home/acme/c/pkey) 0.022 ( 0.003 ms): pkey/7818 pkey_mprotect(start: 0x7f28c3890000, len: 4096, prot: READ|WRITE, pkey: -1) = 0 syscall (/usr/lib64/libc-2.25.so) pkey_mprotect (/home/acme/c/pkey) 0.030 ( 0.002 ms): pkey/7818 pkey_free(pkey: -1 ) = -1 EINVAL Invalid argument syscall (/usr/lib64/libc-2.25.so) pkey_free (/home/acme/c/pkey) The tools/include/uapi/asm-generic/mman-common.h file is used to find the access rights defines for the pkey_alloc syscall second argument. Since we have the detector of changes for the tools/include header files versus its kernel origin (include/uapi/asm-generic/mman-common.h), we'll get whatever new flag appears for that argument automatically. This method should be used in other cases where it is easy to generate those flags tables because the header has properly namespaced defines like PKEY_DISABLE_ACCESS and PKEY_DISABLE_WRITE. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-3xq5312qlks7wtfzv2sk3nct@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-28tools headers: Sync cpu features kernel ABI headers with tooling headersArnaldo Carvalho de Melo
These changes made the tools/arch/x86/include/ headers to drift from its kernel origins: 910448bbed06 ("perf/x86/amd/uncore: Rename cpufeatures macro for cache counters") 5442c2699552 ("x86/cpufeature, kvm/svm: Rename (shorten) the new "virtualized VMSAVE/VMLOAD" CPUID flag") cba4671af755 ("x86/mm: Disable PCID on 32-bit kernels") Which was detected while building perf: make: Entering directory '/home/acme/git/linux/tools/perf' BUILD: Doing 'make -j4' parallel build Warning: Kernel ABI header at 'tools/arch/x86/include/asm/disabled-features.h' differs from latest version at 'arch/x86/include/asm/disabled-features.h' Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h' This sync causes just these perf object files to be rebuilt: CC /tmp/build/perf/bench/mem-memcpy-x86-64-asm.o CC /tmp/build/perf/bench/mem-memset-x86-64-asm.o And the changes in the above changesets don't entail any need for change in the above 'perf bench' files. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-456aafouj911a4x4zwt8stkm@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-28perf tools: Pass full path of FEATURES_DUMPDavid Carrillo-Cisneros
When building with an external FEATURES_DUMP, bpf complains that features dump file is not found. Fix it by passing full file path. Signed-off-by: David Carrillo-Cisneros <davidcc@google.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Paul Turner <pjt@google.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20170827075442.108534-7-davidcc@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-28perf tools: Robustify detection of clang binaryDavid Carrillo-Cisneros
Prior to this patch, make scripts tested for CLANG with ifeq ($(CC), clang), failing to detect CLANG binaries with different names. Fix it by testing for the existence of __clang__ macro in the list of compiler defined macros. Signed-off-by: David Carrillo-Cisneros <davidcc@google.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Paul Turner <pjt@google.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20170827075442.108534-5-davidcc@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-28tools lib: Allow external definition of CC, AR and LDDavid Carrillo-Cisneros
Use already defined values for CC, AR and LD when available. Signed-off-by: David Carrillo-Cisneros <davidcc@google.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Paul Turner <pjt@google.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20170827075442.108534-4-davidcc@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-28perf tools: Allow external definition of flex and bison binary namesDavid Carrillo-Cisneros
Allow user to define flex and bison binary names by passing FLEX and BISON variables. Signed-off-by: David Carrillo-Cisneros <davidcc@google.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Paul Turner <pjt@google.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20170827075442.108534-3-davidcc@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-28tools build tests: Don't hardcode gcc nameDavid Carrillo-Cisneros
Use $(CC) instead of harcoded gcc binary name. Signed-off-by: David Carrillo-Cisneros <davidcc@google.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Paul Turner <pjt@google.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20170827075442.108534-2-davidcc@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-28perf report: Group stat values on global event idJiri Olsa
There's no big value on displaying counts for every event ID, which is one per every CPU. Rather than that, displaying the whole sum for the event. $ perf record -c 100000 -e cycles:u -s test $ perf report -T Before: # PID TID cycles:u cycles:u cycles:u cycles:u ... [20 more columns of 'cycles:u'] 3339 3339 0 0 0 0 3340 3340 0 0 0 0 3341 3341 0 0 0 0 3342 3342 0 0 0 0 Now: # PID TID cycles:u 3339 3339 19678 3340 3340 18744 3341 3341 17335 3342 3342 26414 Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20170824162737.7813-10-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-28perf values: Zero value buffersJiri Olsa
We need to make sure the array of value pointers are zero initialized, because we use them in realloc later on and uninitialized non zero value will cause allocation error and aborted execution. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20170824162737.7813-9-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-28perf values: Fix allocation checkJiri Olsa
Bailing out in case the allocation failed, not the other way round. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20170824162737.7813-8-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-28perf values: Fix thread index bugJiri Olsa
We are taking wrong index (+1) for first thread, which leaves thread with index 0 unused and uninitialized. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20170824162737.7813-7-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-28perf report: Add dump_read functionJiri Olsa
Adding dump_read function to gather all the dump output of read function. Adding output of enabled and running times and id if enabled (3 new lines with '...' prefix below). $ perf record -s ... $ perf report -D 958358311769 0x91f8 [0x40]: PERF_RECORD_READ: 3339 3339 cycles:u 0 ... time enabled : 958358313731 ... time running : 958358313731 ... id : 80 Committer note: Do not use 'read' as a variable name as it breaks the build on older systems, such as RHEL6: CC /tmp/build/perf/util/session.o cc1: warnings being treated as errors util/session.c: In function 'dump_read': util/session.c:1132: error: declaration of 'read' shadows a global declaration /usr/include/bits/unistd.h:35: error: shadowed declaration is here mv: cannot stat `/tmp/build/perf/util/.session.o.tmp': No such file or directory Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20170824162737.7813-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-28bpf: test_maps add sockmap stress testJohn Fastabend
Sockmap is a bit different than normal stress tests that can run in parallel as is. We need to reuse the same socket pool and map pool to get good stress test cases. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28bpf: harden sockmap program attach to ensure correct map typeJohn Fastabend
When attaching a program to sockmap we need to check map type is correct. Fixes: 174a79ff9515 ("bpf: sockmap with sk redirect support") Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28bpf: more SK_SKB selftestsJohn Fastabend
Tests packet read/writes and additional skb fields. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28bpf: additional sockmap self testsJohn Fastabend
Add some more sockmap tests to cover, - forwarding to NULL entries - more than two maps to test list ops - forwarding to different map Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28bpf: convert sockmap field attach_bpf_fd2 to typeJohn Fastabend
In the initial sockmap API we provided strparser and verdict programs using a single attach command by extending the attach API with a the attach_bpf_fd2 field. However, if we add other programs in the future we will be adding a field for every new possible type, attach_bpf_fd(3,4,..). This seems a bit clumsy for an API. So lets push the programs using two new type fields. BPF_SK_SKB_STREAM_PARSER BPF_SK_SKB_STREAM_VERDICT This has the advantage of having a readable name and can easily be extended in the future. Updates to samples and sockmap included here also generalize tests slightly to support upcoming patch for multiple map support. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Fixes: 174a79ff9515 ("bpf: sockmap with sk redirect support") Suggested-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-28perf: cs-etm: Fix ETMv4 CONFIGR entry in perf.data fileMike Leach
The value passed into the perf.data file for the CONFIGR register in ETMv4 was incorrectly being set to the command line options/ETMv3 value. Adds bit definitions and function to remap this value to the correct ETMv4 CONFIGR bit values for all selected options. Signed-off-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-28coresight: pmu: Adds return stack option to perf coresight pmuMike Leach
Return stack is a programmable option on some ETM and PTM hardware. Adds the option flags to enable this from the perf event command line. Signed-off-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-28perf record: Set read_format for inherit_statJiri Olsa
Set read_format for what we expect to get from read event generated by perf_event_attr::inherit_stat. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20170824162737.7813-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-28perf c2c: Fix remote HITM detection for SkylakeJiri Olsa
Skylake introduced new mem_remote bit in union perf_mem_data_src [1]. It applies to any other memory level to express Remote unknown level, as is reported by Skylake. Adding this extra check to c2c_decode_stats to properly decode remote HITMs on Skylake. [1] http://lkml.kernel.org/r/20170816222156.19953-4-andi@firstfloor.org Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Andi Kleen <ak@linux.intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Joe Mario <jmario@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20170824085732.28481-1-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-28perf tools: Fix static build with newer toolchainsJiri Olsa
We can't pass --dynamic-list list into static build anymore, because compilers starts to scream about that. Fedora 26 started to fail build with following error: $ make LDFLAGS=-static ... /usr/bin/ld: dynamic STT_GNU_IFUNC symbol `strcmp' with pointer equality in `/usr/lib/gcc/x86_64-redhat-linux/7/../../../../lib64/libc.a(strcmp.o +)' can not be used when making an executable; recompile with -fPIE and relink with -pie There's no sense for --dynamic-list in static build, because there's no .dynsym table in static binary. Consequently the traceevent plugins have never worked with static build, but it was quietly passed by. To fix this in future I think we should add support to compile plugins within the perf binary directly for static build. Reported-and-Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/n/tip-jeg6a7ff9j9hlqn8k4gllzvv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-28perf stat: Fix path to PMU formats in documentationJack Henschel
As defined in tools/perf/util/pmu.c, the EVENT_SOURCE_DEVICE_PATH is /sys/bus/event_source/devices/ (no traling 's' in event_source) This patch corrects the path in the perf stat documentation Signed-off-by: Jack Henschel <jackdev@mailbox.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jack Henschel <jackdev@mailbox.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: trivial@kernel.org Link: http://lkml.kernel.org/r/20170824132022.10934-1-jackdev@mailbox.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-28Merge 4.13-rc7 into staging-nextGreg Kroah-Hartman
We want the staging and iio fixes in here to handle the merge issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-28Merge 4.13-rc7 into char-misc-nextGreg Kroah-Hartman
We want the binder fix in here as well for testing and merge issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-27Merge tag 'ntb-4.13-bugfixes' of git://github.com/jonmason/ntbLinus Torvalds
Pull NTB fixes from Jon Mason: "NTB bug fixes to address an incorrect ntb_mw_count reference in the NTB transport, improperly bringing down the link if SPADs are corrupted, and an out-of-order issue regarding link negotiation and data passing" * tag 'ntb-4.13-bugfixes' of git://github.com/jonmason/ntb: ntb: ntb_test: ensure the link is up before trying to configure the mws ntb: transport shouldn't disable link due to bogus values in SPADs ntb: use correct mw_count function in ntb_tool and ntb_transport
2017-08-26Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Ingo Molnar: "Two fixes: one for an ldt_struct handling bug and a cherry-picked objtool fix" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm: Fix use-after-free of ldt_struct objtool: Fix '-mtune=atom' decoding support in objtool 2.0
2017-08-25selftests: lib.mk: change RUN_TESTS to print messages in TAP13 formatShuah Khan
Change common RUN_TESTS to print messages in user friendly TAP13 format. This change add TAP13 header at the start of RUN_TESTS target run, and prints the resulting pass/fail messages with test number information in the TAP 13 format for each test in the run tests list. This change covers test scripts as well as test programs. Test programs have an option to use ksft_ API, however test scripts won't be able to. With this change, test scripts can print TAP13 format output without any changes to individual scripts. Test programs can provide TAP13 format output as needed as some tests already do. Tests that haven't been converted will benefit from this change. Tests that are converted benefit from the test counts for all the tests in each test directory. Running firmware tests: make --silent -C tools/testing/selftests/firmware/ run_tests Before the change: modprobe: ERROR: could not insert 'test_firmware': Operation not permitted ./fw_filesystem.sh: /sys/devices/virtual/misc/test_firmware not present You must have the following enabled in your kernel: CONFIG_TEST_FIRMWARE=y selftests: fw_filesystem.sh [FAIL] modprobe: ERROR: could not insert 'test_firmware': Operation not permitted selftests: fw_fallback.sh [FAIL] After the change: TAP version 13 selftests: fw_filesystem.sh ======================================== modprobe: ERROR: could not insert 'test_firmware': Operation not permitted ./fw_filesystem.sh: /sys/devices/virtual/misc/test_firmware not present You must have the following enabled in your kernel: CONFIG_TEST_FIRMWARE=y not ok 1..1 selftests: fw_filesystem.sh [FAIL] selftests: fw_fallback.sh ======================================== modprobe: ERROR: could not insert 'test_firmware': Operation not permitted not ok 1..2 selftests: fw_fallback.sh [FAIL] Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-08-25selftests: change lib.mk RUN_TESTS to take test list as an argumentShuah Khan
Change lib.mk RUN_TESTS to take test list as an argument. This will allow it to be called from individual test makefiles to run additional tests that aren't suitable for a default kselftest run. As an example, timers test includes destructive tests that aren't included in the common run_tests target. Change times/Makefile to use RUN_TESTS call with destructive test list as an argument instead of using its own RUN_TESTS target. Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-08-25selftests: lib.mk: suppress "cd" output from run_tests targetShuah Khan
Suppress "cd" output from run_tests while running tests to declutter the test results. Running efivarfs test: make --silent -C tools/testing/selftests/efivarfs/ run_tests Before the change: skip all tests: must be run as root selftests: efivarfs.sh [PASS] /lkml/linux-kselftest/tools/testing/selftests/efivarfs After the change: skip all tests: must be run as root selftests: efivarfs.sh [PASS] Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-08-25selftests: kselftest framework: change skip exit code to 0Shuah Khan
When a test is skipped, instead of using a special exit code of 4, treat it as pass condition and use exit code of 0. It makes sense to treat skip as pass since the test couldn't be run as opposed to a failed test. Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-08-25selftests/timers: make loop consistent with array sizeBenjamin Gaignard
clocksource_list array is defined as char [10][30] so to initialise it we only have to iterate 10 times. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-08-24Merge tag 'perf-core-for-mingo-4.14-20170823' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: - Expression parser enhancements for metrics (Andi Kleen) - Fix buffer overflow while freeing events in 'perf stat' (Andi Kleen) - Fix static linking with elfutils's libdf and with libunwind in Debian/Ubuntu (Konstantin Khlebnikov) - Tighten detection of BPF events, avoiding matching some other PMU events such as 'cpu/uops_executed.core,cmask=1/' as a .c source file that ended up being considered a BPF event (Andi Kleen) - Add Skylake server uncore JSON vendor events (Andi Kleen) - Add support for printing new mem_info encodings, including 'perf test' checks (Andi Kleen) - Really install manpages via 'make install-man' (Konstantin Khlebnikov) - Fix documentation for perf_event_paranoid and perf_event_mlock_kb sysctls (Konstantin Khlebnikov) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-08-24Merge branch 'linus' into perf/core, to pick up fixesIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-08-24x86/lguest: Remove lguest supportJuergen Gross
Lguest seems to be rather unused these days. It has seen only patches ensuring it still builds the last two years and its official state is "Odd Fixes". Remove it in order to be able to clean up the paravirt code. Signed-off-by: Juergen Gross <jgross@suse.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: boris.ostrovsky@oracle.com Cc: lguest@lists.ozlabs.org Cc: rusty@rustcorp.com.au Cc: xen-devel@lists.xenproject.org Link: http://lkml.kernel.org/r/20170816173157.8633-3-jgross@suse.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-08-23selftests/bpf: add a test for a pruning bug in the verifierAlexei Starovoitov
The test makes a read through a map value pointer, then considers pruning a branch where the register holds an adjusted map value pointer. It should not prune, but currently it does. Signed-off-by: Alexei Starovoitov <ast@fb.com> [ecree@solarflare.com: added test-name and patch description] Signed-off-by: Edward Cree <ecree@solarflare.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-23selftests/bpf: add a test for a bug in liveness-based pruningEdward Cree
Writes in straight-line code should not prevent reads from propagating along jumps. With current verifier code, the jump from 3 to 5 does not add a read mark on 3:R0 (because 5:R0 has a write mark), meaning that the jump from 1 to 3 gets pruned as safe even though R0 is NOT_INIT. Verifier output: 0: (61) r2 = *(u32 *)(r1 +0) 1: (35) if r2 >= 0x0 goto pc+1 R1=ctx(id=0,off=0,imm=0) R2=inv(id=0,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R10=fp0 2: (b7) r0 = 0 3: (35) if r2 >= 0x0 goto pc+1 R0=inv0 R1=ctx(id=0,off=0,imm=0) R2=inv(id=0,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R10=fp0 4: (b7) r0 = 0 5: (95) exit from 3 to 5: safe from 1 to 3: safe processed 8 insns, stack depth 0 Signed-off-by: Edward Cree <ecree@solarflare.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-23selftests/net: Add a test to validate behavior of rx timestampsMike Maloney
Validate the behavior of the combination of various timestamp socket options, and ensure consistency across ip, udp, and tcp. Signed-off-by: Mike Maloney <maloney@google.com> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-23selftests: timers: remove rtctest_setdate from run_destructive_testsShuah Khan
Remove rtctest_setdate from run_destructive_tests target. Leave it in TEST_GEN_PROGS_EXTENDED to be included in the install targets. Suggested-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> Reviewed-by: Benjamin Gaignard <benjamin.gaignard@linaro.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-08-22selftests: timers: Fix run_destructive_tests target to handle skipped testsShuah Khan
When a test exits with skip exit code of 4, "make run_destructive_tests" halts testing. Fix run_destructive_tests target to handle error exit codes. Cc: stable <stable@vger.kernel.org> [4.13+] Reported-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-08-22kselftests: timers: leap-a-day: Change default arguments to help test runsJohn Stultz
Change default arguments for leap-a-day to always set the time each iteration (rather then waiting for midnight UTC), and to only run 10 interations (rather then infinite). If one wants to wait for midnight UTC, they can use the new -w flag, and we add a note to the argument help that -i -1 will run infinitely. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Cc: Miroslav Lichvar <mlichvar@redhat.com> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Stephen Boyd <stephen.boyd@linaro.org> Cc: Shuah Khan <shuah@kernel.org> Cc: linux-kselftest@vger.kernel.org Signed-off-by: John Stultz <john.stultz@linaro.org> Cc: stable <stable@vger.kernel.org> [4.13+] Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-08-22selftests: timers: drop support for !KTEST caseShuah Khan
There is no need to keep timers tests in sync with external timers repo. Drop support for !KTEST to support for building and running timers tests without kselftest framework. Reference: https://lkml.org/lkml/2017/8/10/952 Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> Acked-by: John Stultz <john.stultz@linaro.org>
2017-08-22perf tools: Fix static linking with libunwindKonstantin Khlebnikov
* libunwind-x86_64 must be linked before libunwind * libunwind requires liblzma * static libunwind conflicts with static libgcc_eh Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/150322917247.129799.14247751517961953155.stgit@buzz Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-22perf tools: Fix static linking with libdw from elfutilsKonstantin Khlebnikov
Fix feature test for static libdw: link required dependencies. Backends of libebl are not statically linked thus libdl is required. In Debian/Ubuntu libdw-dev includes libebl.a starting from 0.166-1. Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/150322916720.129772.7959925864494283854.stgit@buzz Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-22perf: Fix documentation for sysctls perf_event_paranoid and perf_event_mlock_kbKonstantin Khlebnikov
Fix misprint CAP_IOC_LOCK -> CAP_IPC_LOCK. This capability have nothing to do with raw tracepoints. This part is about bypassing mlock limits. Sysctl kernel.perf_event_paranoid = -1 allows raw and ftrace function tracepoints without CAP_SYS_ADMIN. Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/150322916080.129746.11285255474738558340.stgit@buzz Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-22perf tools: Really install manpages via 'make install-man'Konstantin Khlebnikov
Target install-man builds them but forget to install. Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Borislav Petkov <borislav.petkov@amd.com> Cc: Peter Zijlstra <peterz@infradead.org> Fixes: af3df2cf17f5 ("perf tools: Try to build Documentation when installing") Link: http://lkml.kernel.org/r/150322915300.129715.13645857235229756834.stgit@buzz Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-22perf test: Add test cases for new data source encodingAndi Kleen
Add some simple tests to perf test to test data source printing. v2: Make the tests actually checked for the correct name of Forward v3: Adjust to new encoding Committer notes: Avoid the in place declaration to make this build with older compilers, for instance, in Debian 7 we get: tests/mem.c: In function 'test__mem': tests/mem.c:30:5: error: missing initializer [-Werror=missing-field-initializers] tests/mem.c:30:5: error: (near initialization for '(anonymous).<anonymous>.mem_snoop') [-Werror=missing-field-initializers] So just zero a struct, then go on building the unions as needed, reusing settings from the previous test, i.e. local -> remote, etc. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20170816222156.19953-5-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-22perf tools: Add support for printing new mem_info encodingsAndi Kleen
Add decoding for the new "lvlx" and "snoopx" meminfo fields added earlier to the kernel so that "perf mem report" and other tools can print it properly. v2: Merge with persistent memory patch. Switch to new bit encoding for each combination. v3: Switch to generic lvlnum field. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20170816222156.19953-4-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-22perf vendor events: Add Skylake server uncore event listAndi Kleen
Add JSON uncore events for Skylake Server to perf. Based on JSON list V1.01 This is a much fuller list than with earlier uncores, including more low level (but also harder to understand) events. It does not include the "experimential" events. The previous high level metric (LLC_* etc.) are still available when applicable. C state power events are not included at this point. Signed-off-by: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/20170816220553.GA19463@tassilo.jf.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
generated by cgit (git 2.34.1) at 2025-07-16 19:47:38 +0000