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2015-10-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Conflicts: drivers/net/usb/asix_common.c net/ipv4/inet_connection_sock.c net/switchdev/switchdev.c In the inet_connection_sock.c case the request socket hashing scheme is completely different in net-next. The other two conflicts were overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-20perf record: Add ability to sample call branchesStephane Eranian
This patch add a new branch type sampling filter to perf record. It is named 'call' and maps to PERF_SAMPLE_BRANCH_CALL. It samples direct call branches only, unlike 'any_call' which includes indirect calls as well. $ perf record -j call -e cycles ..... The man page is updated accordingly. Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: khandual@linux.vnet.ibm.com Link: http://lkml.kernel.org/r/1444720151-10275-5-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-19tools/power turbostat: simplify Bzy_MHz calculationLen Brown
Bzy_MHz = TSC_delta*tsc_tweak/APERF_delta/MPERF_delta/measurement_interval becomes Bzy_MHz = base_mhz/APERF_delta/MPERF_delta on systems which support MSR_NHM_PLATFORM_INFO. base_mhz is calculated directly from the base_ratio reported in MSR_NHM_PLATFORM_INFO * bclk, and bclk is discovered via MSR or cpuid. This reduces the dependency of Bzy_MHz calculation on the TSC. Previously, there were 4 TSC readings required in each caculation, the raw TSC delta combined with the measurement_interval. This also removes the "tsc_tweak" correction factor used when TSC runs on a different base clock from the CPU's bclk. After this change, tsc_tweak is used only for %Busy. The end-result should be a Bzy_MHz result slightly less prone to jitter. Signed-off-by: Len Brown <len.brown@intel.com>
2015-10-19perf bench: Use named initializers in the trailer tooArnaldo Carvalho de Melo
To avoid this splat with gcc 4.4.7: cc1: warnings being treated as errors bench/mem-functions.c:273: error: missing initializer bench/mem-functions.c:273: error: (near initialization for ‘memcpy_functions[4].desc’) bench/mem-functions.c:366: error: missing initializer bench/mem-functions.c:366: error: (near initialization for ‘memset_functions[4].desc’) Cc: David Ahern <dsahern@gmail.com> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/n/tip-0s8o6tgw1pdwvdv02llb9tkd@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf script: Check output fields only for samplesJiri Olsa
There's no need to check sampling output fields for events without perf_event_attr::sample_type field set. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1444992092-17897-51-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf cpu_map: Add data arg to cpu_map__build_map callbackJiri Olsa
Adding data arg to cpu_map__build_map callback, so we could pass data along to the callback. It'll be needed in following patches to retrieve topology info from perf.data. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1444992092-17897-41-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf cpu_map: Make cpu_map__build_map globalJiri Olsa
We'll need to call it from perf stat in the stat_script patchkit Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1444992092-17897-40-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf stat: Add AGGR_UNSET modeJiri Olsa
Adding AGGR_UNSET mode, so we could distinguish unset aggr_mode in following patches. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1444992092-17897-30-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf stat: Rename perf_stat struct into perf_stat_evselJiri Olsa
It's used as the perf_evsel::priv data, so the name suits better. Also we'll need the perf_stat name free for more generic struct. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1444992092-17897-29-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf help: Change 'usage' to 'Usage' for consistencyYunlong Song
Capitalize 'usage' to make it consistent with all the other 'Usage' in the codes, e.g., usage_builtin. Signed-off-by: Yunlong Song <yunlong.song@huawei.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Ramkumar Ramachandra <artagnon@gmail.com> Cc: Sriram Raghunathan <sriram.r@nokia.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1444894792-2338-3-git-send-email-yunlong.song@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf bench: Run benchmarks, don't test themIngo Molnar
So right now we output this text: memcpy: Benchmark for memcpy() functions memset: Benchmark for memset() functions all: Test all memory access benchmarks But the right verb to use with benchmarks is to 'run' them, not 'test' them. So change this (and all similar texts) to: memcpy: Benchmark for memcpy() functions memset: Benchmark for memset() functions all: Run all memory access benchmarks Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1445241870-24854-15-git-send-email-mingo@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf bench mem: Rename 'routine' to 'function'Ingo Molnar
So right now there's a somewhat inconsistent mess of the benchmarking code and options sometimes calling benchmarked functions 'functions', sometimes calling them 'routines'. Name them 'functions' consistently. Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1445241870-24854-14-git-send-email-mingo@kernel.org [ Updated perf-bench man page, pointed out by David Ahern ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf bench: Harmonize all the -l/--nr_loops optionsIngo Molnar
We have three benchmarking subsystems that specify some sort of 'number of loops' parameter - but all of them do it inconsistently: numa: -l/--nr_loops sched messaging: -l/--loops mem memset/memcpy: -i/--iterations Harmonize them to -l/--nr_loops by picking the numa variant - which is also the most likely one to have existing scripting which we don't want to break. Plus improve the parameter help texts to indicate the default value for the nr_loops variable to keep users from guessing ... Also propagate the naming to internal variables. Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1445241870-24854-13-git-send-email-mingo@kernel.org [ Let the harmonisation reach the perf-bench man page as well ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf bench mem: Reorganize the code a bitIngo Molnar
Reorder functions a bit, so that we synchronize the layout of the memcpy() and memset() portions of the code. This improves the code, especially after we'll add an strlcpy() variant as well. Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1445241870-24854-12-git-send-email-mingo@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf bench mem: Improve user visible stringsIngo Molnar
- fix various typos in user visible output strings - make the output consistent (wrt. capitalization and spelling) - offer the list of routines to benchmark on '-r help'. Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1445241870-24854-11-git-send-email-mingo@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf bench mem: Fix 'length' vs. 'size' naming confusionIngo Molnar
So 'perf bench mem memcpy/memset' consistently uses 'len' and 'length' for buffer sizes - while it's really a memory buffer size. (strings have length.) Rename all affected variables. Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1445241870-24854-10-git-send-email-mingo@kernel.org [ Update perf-bench man page ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf bench mem: Rename 'routine' to 'routine_str'Ingo Molnar
So bench/mem-functions.c has a 'routine' name for the routines parameter string, but a 'length_str' name for the length parameter string. We also have another entity named 'routine': 'struct routine'. This is inconsistent and confusing: rename 'routine' to 'routine_str'. Also fix typos in the --routine help text. Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1445241870-24854-9-git-send-email-mingo@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf bench mem: Change 'cycle' to 'cycles'Ingo Molnar
So 'perf bench mem memset/memcpy' has a CPU cycles measurement method, but calls it 'cycle' (singular) throughout the code, which makes it harder to read. Rename all related functions, variables and options to a plural 'cycles' nomenclature. Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1445241870-24854-8-git-send-email-mingo@kernel.org [ s/--cycle/--cycles/g in perf-bench man page ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf bench: List output formatting options on 'perf bench -h'Ingo Molnar
So 'perf bench -h' is not very helpful when printing the help line about the output formatting options: -f, --format <default> Specify format style There are two output format styles, 'default' and 'simple', so improve the help text to: -f, --format <default|simple> Specify the output formatting style Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1445241870-24854-7-git-send-email-mingo@kernel.org [ Removed leftovers from the mem-functions.c rename ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf bench: Remove the prefaulting complication from 'perf bench mem mem*'Ingo Molnar
So 'perf bench mem memcpy/memset' has elaborate code to measure memcpy()/memset() performance both with freshly allocated buffers (which includes initial page fault overhead) and with preallocated buffers. But the thing is, the resulting bandwidth results are mostly meaningless, because page faults dominate so much of the cost. It might make sense to measure cache cold vs. cache hot performance, but the code does not do this. So remove this complication, and always prefault the ranges before using them. Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1445241870-24854-6-git-send-email-mingo@kernel.org [ Remove --no-prefault, --only-prefault from docs, noticed by David Ahern ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf bench: Rename 'mem-memcpy.c' => 'mem-functions.c'Ingo Molnar
So mem-memcpy.c started out as a simple memcpy() benchmark, then it grew memset() functionality and now I plan to add string copy benchmarks as well. This makes the file name a misnomer: rename it to the more generic mem-functions.c name. Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1445241870-24854-5-git-send-email-mingo@kernel.org [ The "rename" was introducing __unused, wasn't removing the old file, and didn't update tools/perf/bench/Build, fix it ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf bench: Eliminate unused argument from bench_mem_common()Ingo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1445241870-24854-4-git-send-email-mingo@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf bench: Default to all routines in 'perf bench mem'Ingo Molnar
So few people know that the --routine option to 'perf bench memcpy/memset' exists, and would not know that it's capable of testing the kernel's memcpy/memset implementations. Furthermore, 'perf bench mem all' will not run all routines: vega:~> perf bench mem all # Running mem/memcpy benchmark... Routine default (Default memcpy() provided by glibc) # Copying 1MB Bytes ... 894.454383 MB/Sec 3.844734 GB/Sec (with prefault) # Running mem/memset benchmark... Routine default (Default memset() provided by glibc) # Copying 1MB Bytes ... 1.220703 GB/Sec 9.042245 GB/Sec (with prefault) Because misleadingly the 'all' refers to 'all sub-benchmarks', not 'all sub-benchmarks and routines'. Fix all this by making the memcpy/memset routine to default to 'all', which results in all the benchmarks being run: triton:~> perf bench mem all # Running mem/memcpy benchmark... Routine default (Default memcpy() provided by glibc) # Copying 1MB Bytes ... 1.448906 GB/Sec 4.957170 GB/Sec (with prefault) Routine x86-64-unrolled (unrolled memcpy() in arch/x86/lib/memcpy_64.S) # Copying 1MB Bytes ... 1.614153 GB/Sec 4.379204 GB/Sec (with prefault) Routine x86-64-movsq (movsq-based memcpy() in arch/x86/lib/memcpy_64.S) # Copying 1MB Bytes ... 1.570036 GB/Sec 4.264465 GB/Sec (with prefault) Routine x86-64-movsb (movsb-based memcpy() in arch/x86/lib/memcpy_64.S) # Copying 1MB Bytes ... 1.788576 GB/Sec 6.554111 GB/Sec (with prefault) # Running mem/memset benchmark... Routine default (Default memset() provided by glibc) # Copying 1MB Bytes ... 2.082223 GB/Sec 9.126752 GB/Sec (with prefault) Routine x86-64-unrolled (unrolled memset() in arch/x86/lib/memset_64.S) # Copying 1MB Bytes ... 5.710892 GB/Sec 8.346688 GB/Sec (with prefault) Routine x86-64-stosq (movsq-based memset() in arch/x86/lib/memset_64.S) # Copying 1MB Bytes ... 9.765625 GB/Sec 12.520032 GB/Sec (with prefault) Routine x86-64-stosb (movsb-based memset() in arch/x86/lib/memset_64.S) # Copying 1MB Bytes ... 9.668936 GB/Sec 12.682630 GB/Sec (with prefault) Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1445241870-24854-3-git-send-email-mingo@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf bench: Improve the 'perf bench mem memcpy' code readabilityIngo Molnar
- improve the readability of initializations - fix unnecessary double negations - fix ugly line breaks - fix other small details Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1445241870-24854-2-git-send-email-mingo@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf test: Suppress libtraceevent warningsNamhyung Kim
Currently libtraceevent emits warning on unsupported event formats. However it'd be better to see them only -v option is given. To do that, it needs to override the warning() function which is used in the libtracevent. Thus add set_warning_routine() same as set_die_routine() and check the verbose flag in our warning routine. Before: # perf test 5 5: parse events tests : Warning: [kvmmmu:kvm_mmu_get_page] bad op token { Warning: [kvmmmu:kvm_mmu_sync_page] bad op token { Warning: [kvmmmu:kvm_mmu_unsync_page] bad op token { Warning: [kvmmmu:kvm_mmu_prepare_zap_page] bad op token { Warning: [kvmmmu:fast_page_fault] function is_writable_pte not defined ... Ok After: # perf test 5 5: parse events tests : Ok Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1445268229-1601-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19perf test: Silence tracepoint event failuresNamhyung Kim
Currently, when 'perf test' is run by a normal user, it'll fail to access tracepoint events. The output becomes somewhat messy because it tries to be nice with long error messages and hints. IMHO this is not needed for 'perf test' by default and AFAIK 'perf test' uses pr_debug() rather than pr_err() for such messages so that one can use -v option to see further details on failed testcases if needed. Before: $ perf test 1: vmlinux symtab matches kallsyms : FAILED! 2: detect openat syscall event :Error: No permissions to read /sys/kernel/debug/tracing/events/syscalls/sys_enter_openat Hint: Try 'sudo mount -o remount,mode=755 /sys/kernel/debug/tracing' FAILED! 3: detect openat syscall event on all cpus :Error: No permissions to read /sys/kernel/debug/tracing/events/syscalls/sys_enter_openat Hint: Try 'sudo mount -o remount,mode=755 /sys/kernel/debug/tracing' FAILED! ... After: $ perf test 1: vmlinux symtab matches kallsyms : FAILED! 2: detect openat syscall event : FAILED! 3: detect openat syscall event on all cpus : FAILED! ... $ perf test -v 2 2: detect openat syscall event : --- start --- test child forked, pid 30575 Error: No permissions to read /sys/kernel/debug/tracing/events/syscalls/sys_enter_openat Hint: Try 'sudo mount -o remount,mode=755 /sys/kernel/debug/tracing' test child finished with -1 ---- end ---- detect openat syscall event: FAILED! Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1445268229-1601-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-19selftests/powerpc: Run EBB tests only on POWER8Denis Kirjanov
EBB (Event Based Branches) are currently only available on POWER8, so we should skip them on other CPUs. I've found that at least one test loops forever on 970MP (cycles_with_freeze_test). Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org> [mpe: Minor change log editing, add skip to cpu_event_vs_ebb_test] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-10-19Merge branch 'for-mingo' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu Pull RCU updates from Paul E. McKenney: - Miscellaneous fixes. (Paul E. McKenney, Boqun Feng, Oleg Nesterov, Patrick Marlier) - Improvements to expedited grace periods. (Paul E. McKenney) - Performance improvements to and locktorture tests for percpu-rwsem. (Oleg Nesterov, Paul E. McKenney) - Torture-test changes. (Paul E. McKenney, Davidlohr Bueso) - Documentation updates. (Paul E. McKenney) Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-16Merge tag 'powerpc-4.3-4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: - Re-enable CONFIG_SCSI_DH in our defconfigs - Remove unused os_area_db_id_video_mode - cxl: fix leak of IRQ names in cxl_free_afu_irqs() from Andrew - cxl: fix leak of ctx->irq_bitmap when releasing context via kernel API from Andrew - cxl: fix leak of ctx->mapping when releasing kernel API contexts from Andrew - cxl: Workaround malformed pcie packets on some cards from Philippe - cxl: Fix number of allocated pages in SPA from Christophe Lombard - Fix checkstop in native_hpte_clear() with lockdep from Cyril - Panic on unhandled Machine Check on powernv from Daniel - selftests/powerpc: Fix build failure of load_unaligned_zeropad test * tag 'powerpc-4.3-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: selftests/powerpc: Fix build failure of load_unaligned_zeropad test powerpc/powernv: Panic on unhandled Machine Check powerpc: Fix checkstop in native_hpte_clear() with lockdep cxl: Fix number of allocated pages in SPA cxl: Workaround malformed pcie packets on some cards cxl: fix leak of ctx->mapping when releasing kernel API contexts cxl: fix leak of ctx->irq_bitmap when releasing context via kernel API cxl: fix leak of IRQ names in cxl_free_afu_irqs() powerpc/ps3: Remove unused os_area_db_id_video_mode powerpc/configs: Re-enable CONFIG_SCSI_DH
2015-10-15selftests/seccomp: build and pass on arm64Kees Cook
Changing arm64 syscalls is done via a specific register set, more like s390 than like arm (specific ptrace call) and x86 (part of general registers). Since (restarting) poll doesn't exist on arm64, switch to using nanosleep for testing restart_syscall. And since it looks like the syscall ABI is inconsistent on arm-compat, so we must work around it (and document it) in the test. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-10-15selftests: memfd_test: Revised STACK_SIZE to make it 16-byte alignedChunyan Zhang
There is a mandate of 16-byte aligned stack on AArch64 [1], so the STACK_SIZE here should also be 16-byte aligned, otherwise we would get an error when calling clone(). [1] http://lxr.free-electrons.com/source/arch/arm64/kernel/process.c#L265 Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-10-15selftests/pstore: add pstore test scripts going with rebootHiraku Toyooka
To test pstore in earnest, we have to cause kernel crash and check pstore filesystem after reboot. We add two scripts: - pstore_crash_test This script causes kernel crash and reboot. It is executed by 'make run_pstore_crash' in selftests. It can also be used with kdump. - pstore_post_reboot_tests This script includes test cases which check pstore's behavior after crash and reboot. It is executed together with pstore_tests by 'make run_tests [-C pstore]' in selftests. The test cases in pstore_post_reboot_tests are currently following. - Check pstore backend is registered - Mount pstore filesystem - Check dmesg/console/pmsg files exist in pstore filesystem - Check dmesg/console files contain oops end marker - Check pmsg file properly keeps the content written before crash - Remove all files in pstore filesystem Example usage is following. (before reboot) # cd /path/to/selftests # make run_tests -C pstore === Pstore unit tests (pstore_tests) === UUID=b49b02cf-b0c2-4309-be43-b08c3971e37f ... selftests: pstore_tests [PASS] === Pstore unit tests (pstore_post_reboot_tests) === UUID=953eb1bc-8e03-48d7-b27a-6552b24c5b7e Checking pstore backend is registered ... ok backend=ramoops cmdline=console=ttyS0,115200 root=/dev/mmcblk0p2 rw rootwait mem=768M ramoops.mem_address=0x30000000 ramoops.mem_size=0x10000 pstore_crash_test has not been executed yet. we skip further tests. selftests: pstore_post_reboot_tests [PASS] # make run_pstore_crash === Pstore unit tests (pstore_crash_test) === UUID=93c8972d-1466-430b-8c4a-28d8681e74c6 Checking pstore backend is registered ... ok backend=ramoops cmdline=console=ttyS0,115200 root=/dev/mmcblk0p2 rw rootwait mem=768M ramoops.mem_address=0x30000000 ramoops.mem_size=0x10000 Causing kernel crash ... (kernel crash and reboot) ... (after reboot) # make run_tests -C pstore === Pstore unit tests (pstore_tests) === UUID=8e511e77-2285-499f-8bc0-900d9af1fbcc ... selftests: pstore_tests [PASS] === Pstore unit tests (pstore_post_reboot_tests) === UUID=2dcc2132-4f3c-45aa-a38f-3b54bff8cef1 Checking pstore backend is registered ... ok backend=ramoops cmdline=console=ttyS0,115200 root=/dev/mmcblk0p2 rw rootwait mem=768M ramoops.mem_address=0x30000000 ramoops.mem_size=0x10000 Mounting pstore filesystem ... ok Checking dmesg files exist in pstore filesystem ... ok dmesg-ramoops-0 dmesg-ramoops-1 Checking console files exist in pstore filesystem ... ok console-ramoops-0 Checking pmsg files exist in pstore filesystem ... ok pmsg-ramoops-0 Checking dmesg files contain oops end marker dmesg-ramoops-0 ... ok dmesg-ramoops-1 ... ok Checking console file contains oops end marker ... ok Checking pmsg file properly keeps the content written before crash ... ok Removing all files in pstore filesystem console-ramoops-0 ... ok dmesg-ramoops-0 ... ok dmesg-ramoops-1 ... ok pmsg-ramoops-0 ... ok selftests: pstore_post_reboot_tests [PASS] Signed-off-by: Hiraku Toyooka <hiraku.toyooka.gu@hitachi.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Anton Vorontsov <anton@enomsg.org> Cc: Colin Cross <ccross@android.com> Cc: Kees Cook <keescook@chromium.org> Cc: Mark Salyzyn <salyzyn@android.com> Cc: Seiji Aguchi <seiji.aguchi.tr@hitachi.com> Cc: linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-10-15selftests/pstore: add pstore test script for pre-rebootHiraku Toyooka
The pstore_tests script includes test cases which check pstore's behavior before crash (and reboot). The test cases are currently following. - Check pstore backend is registered - Check pstore console is registered - Check /dev/pmsg0 exists - Write unique string to /dev/pmsg0 The unique string written to /dev/pmsg includes UUID. The UUID is also left in 'uuid' file in order to enable us to check if the pmsg keeps the string correctly after reboot. Example usage is following. # cd /path/to/selftests # make run_tests -C pstore (or just .pstore/pstore_tests) make: Entering directory '/path/to/selftests/pstore' === Pstore unit tests (pstore_tests) === UUID=b49b02cf-b0c2-4309-be43-b08c3971e37f Checking pstore backend is registered ... ok backend=ramoops cmdline=console=ttyS0,115200 root=/dev/mmcblk0p2 rw rootwait mem=768M ramoops.mem_address=0x30000000 ramoops.mem_size=0x10000 Checking pstore console is registered ... ok Checking /dev/pmsg0 exists ... ok Writing unique string to /dev/pmsg0 ... ok selftests: pstore_tests [PASS] make: Leaving directory '/path/to/selftests/pstore' We can also see test logs later. # cat pstore/logs/20151001-072718_b49b02cf-b0c2-4309-be43-b08c3971e37f/pstore_tests.log Thu Oct 1 07:27:18 UTC 2015 === Pstore unit tests (pstore_tests) === UUID=b49b02cf-b0c2-4309-be43-b08c3971e37f Checking pstore backend is registered ... ok backend=ramoops cmdline=console=ttyS0,115200 root=/dev/mmcblk0p2 rw rootwait mem=768M ramoops.mem_address=0x30000000 ramoops.mem_size=0x10000 Checking pstore console is registered ... ok Checking /dev/pmsg0 exists ... ok Writing unique string to /dev/pmsg0 ... ok Signed-off-by: Hiraku Toyooka <hiraku.toyooka.gu@hitachi.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Anton Vorontsov <anton@enomsg.org> Cc: Colin Cross <ccross@android.com> Cc: Kees Cook <keescook@chromium.org> Cc: Mark Salyzyn <salyzyn@android.com> Cc: Seiji Aguchi <seiji.aguchi.tr@hitachi.com> Cc: linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-10-15selftests: add .gitignore for efivarfsYuan Sun
Signed-off-by: Yuan Sun <sunyuan3@huawei.com> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-10-15selftests/powerpc: Allow the tm-syscall test to build with old headersMichael Ellerman
When building against older kernel headers, currently the tm-syscall test fails to build because PPC_FEATURE2_HTM_NOSC is not defined. Tweak the test so that if PPC_FEATURE2_HTM_NOSC is not defined it still builds, but prints a warning at run time and marks the test as skipped. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-10-15selftests/powerpc: Sort the list of SUB_DIRS to buildMichael Ellerman
This list has gotten too long. Split it into individual lines and sort them, so in future we can add new entries more cleanly. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-10-15selftests/powerpc: Add tests of unmuxed IPC callsMichael Ellerman
This is just a simple test which confirms that the individual IPC syscalls are all available. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-10-14selftests/x86: Style fixes for the 'unwind_vdso' testAndy Lutomirski
Checkpatch is really quite bad for user code like this, but it caught two legit style issues. Reported-by: Borislav Petkov <bp@suse.de> Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/3335040bdd40d2bca4b1a28a3f8b165361c801b7.1444696194.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-13tools build: Fix cross compile buildJiri Olsa
He Kuang the new fixdep tool breaks cross compiling. The reason is it wouldn't get compiled under host arch, but under cross arch and failed to run. We need to add support for host side tools build, meanwhile disabling fixdep usage for cross arch builds. Reported-by: He Kuang <hekuang@huawei.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/20151013124358.GB9467@krava.brq.redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-13tools include: Fix strict-aliasing rules breakageJiri Olsa
Vinson reported build breakage with gcc 4.4 due to strict-aliasing. CC util/annotate.o cc1: warnings being treated as errors util/annotate.c: In function ‘disasm__purge’: linux-next/tools/include/linux/compiler.h:66: error: dereferencing pointer ‘res.41’ does break strict-aliasing rules The reason is READ_ONCE/WRITE_ONCE code we took from kernel sources. They intentionaly break aliasing rules. While this is ok for kernel because it's built with -fno-strict-aliasing, it breaks perf which is build with -Wstrict-aliasing=3. Using extra __may_alias__ type to allow aliasing in this case. Reported-and-tested-by: Vinson Lee <vlee@twopensource.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Martin Liska <mliska@suse.cz> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Rabin Vincent <rabin@rab.in> Cc: linux-next@vger.kernel.org Link: http://lkml.kernel.org/r/20151013085214.GB2705@krava.brq.redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-13selftests/powerpc: Fix build failure of load_unaligned_zeropad testMichael Ellerman
Commit 7a5692e6e533 ("arch/powerpc: provide zero_bytemask() for big-endian") added a call to __fls() in our word-at-a-time.h. That was fine for the kernel build but missed the fact that we also use word-at-a-time.h in a userspace test. Pulling in the kernel version of __fls() gets messy, so just define our own, it's unlikely to change often. Fixes: 7a5692e6e533 ("arch/powerpc: provide zero_bytemask() for big-endian") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-10-12perf hists browser: Add 'm' key for context menu displayNamhyung Kim
With horizontal scrolling, the left/right arrow keys are used to scroll columns and ENTER/ESC keys are used to enter/exit menu. However if callchain is recorded, the ENTER key is used to toggle callchain expansion so there's no way to display menu. Use 'm' key to display the menu for this case. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1444694521-8136-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-12perf callchains: Fix unw_word_t pointer castsRabin Vincent
unw_word_t is uint64_t even on 32-bit MIPS. Cast it to uintptr_t before the cast to void *p to get rid of the following errors: util/unwind-libunwind.c: In function 'access_mem': util/unwind-libunwind.c:464:4: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast] util/unwind-libunwind.c:475:2: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast] cc1: all warnings being treated as errors make[3]: *** [util/unwind-libunwind.o] Error 1 Signed-off-by: Rabin Vincent <rabin.vincent@axis.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Rabin Vincent <rabinv@axis.com> Link: http://lkml.kernel.org/r/1443379079-29133-1-git-send-email-rabin.vincent@axis.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-12perf callchain: Use debug_frame if eh_frame is unusableRabin Vincent
When NO_LIBUNWIND_DEBUG_FRAME=0, use the .debug_frame if the .eh_frame doesn't contain the approprate unwind tables. Signed-off-by: Rabin Vincent <rabin.vincent@axis.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Rabin Vincent <rabinv@axis.com> Link: http://lkml.kernel.org/r/1443379079-29133-3-git-send-email-rabin.vincent@axis.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-12Merge 4.3-rc5 into usb-nextGreg Kroah-Hartman
We want the USB fixes in here as well to make merges easier. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-12Merge 4.3-rc5 into staging-nextGreg Kroah-Hartman
We want the fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-12perf hists browser: Inform how to reset the symbol filterArnaldo Carvalho de Melo
When in the hists browser, i.e. in 'perf report' or in 'perf top', it is possible to press '/' and specify a substring to filter by symbol name. Clarify how to remove a filter by making the prompt be: Please enter the name of symbol you want to see. To remove the filter later, press / + ENTER Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-vbq2b0kyufwy6p0ctkfswcoe@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-12perf ui browsers: Remove help messages about use of right and arrow keysArnaldo Carvalho de Melo
They were repurposed for horizontal scrolling, so use just ENTER/ESC in the help messages. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Fixes: c6c3c02dea40 ("perf hists browser: Implement horizontal scrolling") Link: http://lkml.kernel.org/n/tip-n5ar4qg8fs12ax4vhr3rxhxj@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-12perf symbols: Try the .debug/ DSO cache as a last resortArnaldo Carvalho de Melo
Not as the first attempt at finding a vmlinux for the running kernel, this way we get a more informative filename to present in tools, it will check that the build-id is the same as the one previously loaded in the DSO in dso->build_id, reading from /sys/kernel/notes, for instance. E.g. in the annotation TUI, going from 'perf top', for the scsi_sg_alloc kernel function, in the first line: Before: scsi_sg_alloc /root/.debug/.build-id/28/2777c262e6b3c0451375163c9a81c893218ab1 After: scsi_sg_alloc /lib/modules/4.3.0-rc1+/build/vmlinux And: # ls -la /root/.debug/.build-id/28/2777c262e6b3c0451375163c9a81c893218ab1 lrwxrwxrwx. 1 root root 81 Sep 22 16:11 /root/.debug/.build-id/28/2777c262e6b3c0451375163c9a81c893218ab1 -> ../../home/git/build/v4.3.0-rc1+/vmlinux/282777c262e6b3c0451375163c9a81c893218ab1 # file ~/.debug/home/git/build/v4.3.0-rc1+/vmlinux/282777c262e6b3c0451375163c9a81c893218ab1 /root/.debug/home/git/build/v4.3.0-rc1+/vmlinux/282777c262e6b3c0451375163c9a81c893218ab1: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, BuildID[sha1]=282777c262e6b3c0451375163c9a81c893218ab1, not stripped # The same as: # file /lib/modules/4.3.0-rc1+/build/vmlinux /lib/modules/4.3.0-rc1+/build/vmlinux: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, BuildID[sha1]=282777c262e6b3c0451375163c9a81c893218ab1, not stripped Furthermore: # sha256sum /lib/modules/4.3.0-rc1+/build/vmlinux e7a789bbdc61029ec09140c228e1dd651271f38ef0b8416c0b7d5ff727b98be2 /lib/modules/4.3.0-rc1+/build/vmlinux # sha256sum ~/.debug/home/git/build/v4.3.0-rc1+/vmlinux/282777c262e6b3c0451375163c9a81c893218ab1 e7a789bbdc61029ec09140c228e1dd651271f38ef0b8416c0b7d5ff727b98be2 /root/.debug/home/git/build/v4.3.0-rc1+/vmlinux/282777c262e6b3c0451375163c9a81c893218ab1 [root@zoo new]# Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-9y42ikzq3jisiddoi6f07n8z@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-12timers, kselftest: Add 'adjtick' test to validate adjtimex() tick adjustmentsJohn Stultz
Recently a kernel side NTP bug was fixed via the following commit: 2619d7e9c92d ("time: Fix timekeeping_freqadjust()'s incorrect use of abs() instead of abs64()") When the bug was reported it was difficult to detect, except by tweaking the adjtimex tick value, and noticing how quickly the adjustment took: https://lkml.org/lkml/2015/9/1/488 Thus this patch introduces a new test which manipulates the adjtimex tick value and validates that the results are what we expect. Signed-off-by: John Stultz <john.stultz@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Miroslav Lichvar <mlichvar@redhat.com> Cc: Nuno Gonçalves <nunojpg@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1444094217-20258-1-git-send-email-john.stultz@linaro.org [ Tidied up the code and the changelog a bit. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
generated by cgit (git 2.34.1) at 2025-07-15 20:47:35 +0000