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* Merge tag 'perf-tools-for-v5.14-2021-07-10' of ↵Linus Torvalds2021-07-1177-331/+1872
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull more perf tool updates from Arnaldo Carvalho de Melo: "New features: - Enable use of BPF counters with 'perf stat --for-each-cgroup', using per-CPU 'cgroup-switch' events with an attached BPF program that does aggregation per-cgroup in the kernel instead of using per-cgroup perf events. - Add Topdown metrics L2 events as default events in 'perf stat' for systems having those events. Hardware tracing: - Add a config for max loops without consuming a packet in the Intel PT packet decoder, set via 'perf config intel-pt.max-loops=N' Hardware enablement: - Disable misleading NMI watchdog message in 'perf stat' on hybrid systems such as Intel Alder Lake. - Add a dummy event on hybrid systems to collect metadata records. - Add 24x7 nest metric events for the Power10 platform. Fixes: - Fix event parsing for PMUs starting with the same prefix. - Fix the 'perf trace' 'trace' alias installation dir. - Fix buffer size to report iregs in perf script python scripts, supporting the extended registers in PowerPC. - Fix overflow in elf_sec__is_text(). - Fix 's' on source line when disasm is empty in the annotation TUI, accessible via 'perf annotate', 'perf report' and 'perf top'. - Plug leaks in scandir() returned dirent entries in 'perf test' when sorting the shell tests. - Fix --task and --stat with pipe input in 'perf report'. - Fix 'perf probe' use of debuginfo files by build id. - If a DSO has both dynsym and symtab ELF sections, read from both when loading the symbol table, fixing a problem processing Fedora 32 glibc DSOs. Libraries: - Add grouping of events to libperf, from code in tools/perf, allowing libperf users to use that mode. Misc: - Filter plt stubs from the 'perf probe --functions' output. - Update UAPI header copies for asound, DRM, mman-common.h and the ones affected by the quotactl_fd syscall" * tag 'perf-tools-for-v5.14-2021-07-10' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (29 commits) perf test: Add free() calls for scandir() returned dirent entries libperf: Add tests for perf_evlist__set_leader() libperf: Remove BUG_ON() from library code in get_group_fd() libperf: Add group support to perf_evsel__open() perf tools: Fix pattern matching for same substring in different PMU type perf record: Add a dummy event on hybrid systems to collect metadata records perf stat: Add Topdown metrics L2 events as default events libperf: Adopt evlist__set_leader() from tools/perf as perf_evlist__set_leader() libperf: Move 'nr_groups' from tools/perf to evlist::nr_groups libperf: Move 'leader' from tools/perf to perf_evsel::leader libperf: Move 'idx' from tools/perf to perf_evsel::idx libperf: Change tests to single static and shared binaries perf intel-pt: Add a config for max loops without consuming a packet perf stat: Disable the NMI watchdog message on hybrid perf vendor events power10: Adds 24x7 nest metric events for power10 platform perf script python: Fix buffer size to report iregs in perf script perf trace: Fix the perf trace link location perf top: Fix overflow in elf_sec__is_text() perf annotate: Fix 's' on source line when disasm is empty perf probe: Do not show @plt function by default ...
| * perf test: Add free() calls for scandir() returned dirent entriesRiccardo Mancini2021-07-091-4/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ASan reported a memory leak for items of the entlist returned from scandir(). In fact, scandir() returns a malloc'd array of malloc'd dirents. This patch adds the missing (z)frees. Fixes: da963834fe6975a1 ("perf test: Iterate over shell tests in alphabetical order") Signed-off-by: Riccardo Mancini <rickyman7@gmail.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Fabian Hemmer <copy@copy.sh> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Remi Bernon <rbernon@codeweavers.com> Link: http://lore.kernel.org/lkml/20210709163454.672082-1-rickyman7@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * libperf: Add tests for perf_evlist__set_leader()Jiri Olsa2021-07-091-6/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a test for the newly added perf_evlist__set_leader() function. Committer testing: $ cd tools/lib/perf/ $ sudo make tests [sudo] password for acme: running static: - running tests/test-cpumap.c...OK - running tests/test-threadmap.c...OK - running tests/test-evlist.c...OK - running tests/test-evsel.c...OK running dynamic: - running tests/test-cpumap.c...OK - running tests/test-threadmap.c...OK - running tests/test-evlist.c...OK - running tests/test-evsel.c...OK $ Signed-off-by: Jiri Olsa <jolsa@kernel.org> Requested-by: Shunsuke Nakamura <nakamura.shun@fujitsu.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210706151704.73662-8-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * libperf: Remove BUG_ON() from library code in get_group_fd()Arnaldo Carvalho de Melo2021-07-091-7/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We shouldn't just panic, return a value that doesn't clash with what perf_evsel__open() was already returning in case of error, i.e. errno when sys_perf_event_open() fails. Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Shunsuke Nakamura <nakamura.shun@fujitsu.com> Link: http://lore.kernel.org/lkml/YOiOA5zOtVH9IBbE@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * libperf: Add group support to perf_evsel__open()Jiri Olsa2021-07-091-2/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support to set group_fd in perf_evsel__open() and make it follow the group setup. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Requested-by: Shunsuke Nakamura <nakamura.shun@fujitsu.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210706151704.73662-7-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Fix pattern matching for same substring in different PMU typeJin Yao2021-07-093-2/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some different PMU types may have the same substring. For example, on Icelake server we have PMU types "uncore_imc" and "uncore_imc_free_running". Both PMU types have the substring "uncore_imc". But the parser wrongly thinks they are the same PMU type. We enable an imc event, perf stat -e uncore_imc/event=0xe3/ -a -- sleep 1 Perf actually expands the event to: uncore_imc_0/event=0xe3/ uncore_imc_1/event=0xe3/ uncore_imc_2/event=0xe3/ uncore_imc_3/event=0xe3/ uncore_imc_4/event=0xe3/ uncore_imc_5/event=0xe3/ uncore_imc_6/event=0xe3/ uncore_imc_7/event=0xe3/ uncore_imc_free_running_0/event=0xe3/ uncore_imc_free_running_1/event=0xe3/ uncore_imc_free_running_3/event=0xe3/ uncore_imc_free_running_4/event=0xe3/ That's because the "uncore_imc_free_running" matches the pattern "uncore_imc*". Now we check that the last characters of PMU name is '_<digit>'. For example, for pattern "uncore_imc*", "uncore_imc_0" is parsed ok, but "uncore_imc_free_running_0" fails. Fixes: b2b9d3a3f0211c5d ("perf pmu: Support wildcards on pmu name in dynamic pmu events") Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Agustin Vega-Frias <agustinv@codeaurora.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210701064253.1175-1-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf record: Add a dummy event on hybrid systems to collect metadata recordsKan Liang2021-07-091-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some symbols may not be resolved if a user only monitors one type of PMU. $ sudo perf record -e cpu_atom/branch-instructions/ ./big_small_workload $ sudo perf report –stdio # Overhead Command Shared Object Symbol # ........ ......... ................. ..................... # 28.02% perf-exec [unknown] [.] 0x0000000000401cf6 11.32% perf-exec [unknown] [.] 0x0000000000401d04 10.90% perf-exec [unknown] [.] 0x0000000000401d11 10.61% perf-exec [unknown] [.] 0x0000000000401cfc To parse symbols the metadata records, e.g., PERF_RECORD_COMM, which are generated by the kernel, are required. To decide whether to generate the metadata records, the kernel relies on the event_filter_match() to filter the unrelated events. On a hybrid system, event_filter_match() further checks the CPU mask of the current enabled PMU. If an event is collected on the CPU which doesn't have an enabled PMU, it's treated as an unrelated event. The "big_small_workload" is created in a big core, but runs on a small core. The metadata records are filtered, because the user only monitors the PMU of the small core. The big core PMU is not enabled. For a hybrid system, a dummy event is required to generate the complete side-band events. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/1625760212-18441-1-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf stat: Add Topdown metrics L2 events as default eventsKan Liang2021-07-092-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Topdown Microarchitecture Analysis (TMA) Method is a structured analysis methodology to identify critical performance bottlenecks in out-of-order processors. The Topdown metrics L1 event was added as default in 42641d6f4d15e6db ("perf stat: Add Topdown metrics events as default events") From the Sapphire Rapids server and later platforms, the same dedicated "metrics" register is extended to support both L1 and L2 events. Add both L1 and L2 Topdown metrics events as default to enrich the default measuring information if the new measurement register is available. On legacy systems there is no change to avoid extra multiplexing. The topdown_level indicates the max metrics level for the top-down statistics. Set it to 2 to display all L1 and L2 Topdown metrics events. With the patch: $ perf stat sleep 1 Performance counter stats for 'sleep 1': 0.59 msec task-clock # 0.001 CPUs utilized 1 context-switches # 1.687 K/sec 0 cpu-migrations # 0.000 /sec 76 page-faults # 128.198 K/sec 1,405,318 cycles # 2.371 GHz 1,471,136 instructions # 1.05 insn per cycle 310,132 branches # 523.136 M/sec 10,435 branch-misses # 3.36% of all branches 8,431,908 slots # 14.223 G/sec 1,554,116 topdown-retiring # 18.4% retiring 1,289,585 topdown-bad-spec # 15.2% bad speculation 2,810,636 topdown-fe-bound # 33.2% frontend bound 2,810,636 topdown-be-bound # 33.2% backend bound 231,464 topdown-heavy-ops # 2.7% heavy operations # 15.6% light operations 1,223,453 topdown-br-mispredict # 14.5% branch mispredict # 0.8% machine clears 1,884,779 topdown-fetch-lat # 22.3% fetch latency # 10.9% fetch bandwidth 1,454,917 topdown-mem-bound # 17.2% memory bound # 16.0% Core bound 1.001179699 seconds time elapsed 0.000000000 seconds user 0.001238000 seconds sys Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/1625760169-18396-1-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * libperf: Adopt evlist__set_leader() from tools/perf as perf_evlist__set_leader()Jiri Olsa2021-07-097-20/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the implementation of evlist__set_leader() to a new libperf perf_evlist__set_leader() function with the same functionality make it a libperf exported API. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Requested-by: Shunsuke Nakamura <nakamura.shun@fujitsu.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210706151704.73662-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * libperf: Move 'nr_groups' from tools/perf to evlist::nr_groupsJiri Olsa2021-07-0911-23/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move evsel::nr_groups to perf_evsel::nr_groups, so we can move the group interface to libperf. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Requested-by: Shunsuke Nakamura <nakamura.shun@fujitsu.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210706151704.73662-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * libperf: Move 'leader' from tools/perf to perf_evsel::leaderJiri Olsa2021-07-0920-77/+103
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move evsel::leader to perf_evsel::leader, so we can move the group interface to libperf. Also add several evsel helpers to ease up the transition: struct evsel *evsel__leader(struct evsel *evsel); - get leader evsel bool evsel__has_leader(struct evsel *evsel, struct evsel *leader); - true if evsel has leader as leader bool evsel__is_leader(struct evsel *evsel); - true if evsel is itw own leader void evsel__set_leader(struct evsel *evsel, struct evsel *leader); - set leader for evsel Committer notes: Fix this when building with 'make BUILD_BPF_SKEL=1' tools/perf/util/bpf_counter.c - if (evsel->leader->core.nr_members > 1) { + if (evsel->core.leader->nr_members > 1) { Signed-off-by: Jiri Olsa <jolsa@kernel.org> Requested-by: Shunsuke Nakamura <nakamura.shun@fujitsu.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210706151704.73662-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * libperf: Move 'idx' from tools/perf to perf_evsel::idxJiri Olsa2021-07-0921-58/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move evsel::idx to perf_evsel::idx, so we can move the group interface to libperf. Committer notes: Fixup evsel->idx usage in tools/perf/util/bpf_counter_cgroup.c, that appeared in my tree in my local tree. Also fixed up these: $ find tools/perf/ -name "*.[ch]" | xargs grep 'evsel->idx' tools/perf/ui/gtk/annotate.c: evsel->idx + i); tools/perf/ui/gtk/annotate.c: evsel->idx); $ That running 'make -C tools/perf build-test' caught. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Requested-by: Shunsuke Nakamura <nakamura.shun@fujitsu.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210706151704.73662-3-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * libperf: Change tests to single static and shared binariesJiri Olsa2021-07-0711-51/+67
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make tests to be two binaries 'tests_static' and 'tests_shared', so the maintenance is easier. Adding tests under libperf build system, so we define all the flags just once. Adding make-tests tule to just compile tests without running them. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Shunsuke Nakamura <nakamura.shun@fujitsu.com> Link: http://lore.kernel.org/lkml/20210706151704.73662-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf intel-pt: Add a config for max loops without consuming a packetAdrian Hunter2021-07-074-4/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Intel PT decoder limits the number of unconditional branches (e.g. jmps) decoded without consuming any trace packets. Generally, a loop needs a conditional branch which generates a TNT packet, whereas a "ret" instruction will generate a TIP or TNT packet. So exceeding the limit is assumed to be a never-ending loop, which can happen if there has been a decoding error putting the decoder at the wrong place in the code. Up until now, the limit of 10000 has been enough but some analytic purposes have been reported to exceed that. Increase the limit to 100000, and make it configurable via perf config intel-pt.max-loops. Also amend the "Never-ending loop" message to mention the configuration entry. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20210701175132.3977-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf stat: Disable the NMI watchdog message on hybridJin Yao2021-07-071-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we run a single workload that only runs on big core, there is always a ugly message about disabling the NMI watchdog because the atom is not counted. Before: # ./perf stat true Performance counter stats for 'true': 0.43 msec task-clock # 0.396 CPUs utilized 0 context-switches # 0.000 /sec 0 cpu-migrations # 0.000 /sec 45 page-faults # 103.918 K/sec 639,634 cpu_core/cycles/ # 1.477 G/sec <not counted> cpu_atom/cycles/ (0.00%) 643,498 cpu_core/instructions/ # 1.486 G/sec <not counted> cpu_atom/instructions/ (0.00%) 123,715 cpu_core/branches/ # 285.694 M/sec <not counted> cpu_atom/branches/ (0.00%) 4,094 cpu_core/branch-misses/ # 9.454 M/sec <not counted> cpu_atom/branch-misses/ (0.00%) 0.001092407 seconds time elapsed 0.001144000 seconds user 0.000000000 seconds sys Some events weren't counted. Try disabling the NMI watchdog: echo 0 > /proc/sys/kernel/nmi_watchdog perf stat ... echo 1 > /proc/sys/kernel/nmi_watchdog # ./perf stat -e '{cpu_atom/cycles/,msr/tsc/}' true Performance counter stats for 'true': <not counted> cpu_atom/cycles/ (0.00%) <not counted> msr/tsc/ (0.00%) 0.001904106 seconds time elapsed 0.001947000 seconds user 0.000000000 seconds sys Some events weren't counted. Try disabling the NMI watchdog: echo 0 > /proc/sys/kernel/nmi_watchdog perf stat ... echo 1 > /proc/sys/kernel/nmi_watchdog The events in group usually have to be from the same PMU. Try reorganizing the group. Now we disable the NMI watchdog message on hybrid, otherwise there are too many false positives. After: # ./perf stat true Performance counter stats for 'true': 0.79 msec task-clock # 0.419 CPUs utilized 0 context-switches # 0.000 /sec 0 cpu-migrations # 0.000 /sec 48 page-faults # 60.889 K/sec 777,692 cpu_core/cycles/ # 986.519 M/sec <not counted> cpu_atom/cycles/ (0.00%) 669,147 cpu_core/instructions/ # 848.828 M/sec <not counted> cpu_atom/instructions/ (0.00%) 128,635 cpu_core/branches/ # 163.176 M/sec <not counted> cpu_atom/branches/ (0.00%) 4,089 cpu_core/branch-misses/ # 5.187 M/sec <not counted> cpu_atom/branch-misses/ (0.00%) 0.001880649 seconds time elapsed 0.001935000 seconds user 0.000000000 seconds sys # ./perf stat -e '{cpu_atom/cycles/,msr/tsc/}' true Performance counter stats for 'true': <not counted> cpu_atom/cycles/ (0.00%) <not counted> msr/tsc/ (0.00%) 0.000963319 seconds time elapsed 0.000999000 seconds user 0.000000000 seconds sys Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210610034557.29766-1-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf vendor events power10: Adds 24x7 nest metric events for power10 platformKajol Jain2021-07-071-0/+424
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch adds 24x7 nest metric events for POWER10. Signed-off-by: Kajol Jain <kjain@linux.ibm.com> Tested-by: Nageswara R Sastry <rnsastry@linux.ibm.com> Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Clarke <pc@us.ibm.com> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lore.kernel.org/lkml/20210628064935.163465-1-kjain@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf script python: Fix buffer size to report iregs in perf scriptKajol Jain2021-07-071-5/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 48a1f565261d2ab1 ("perf script python: Add more PMU fields to event handler dict") added functionality to report fields like weight, iregs, uregs etc via perf report. That commit predefined buffer size to 512 bytes to print those fields. But in PowerPC, since we added extended regs support in: 068aeea3773a6f4c ("perf powerpc: Support exposing Performance Monitor Counter SPRs as part of extended regs") d735599a069f6936 ("powerpc/perf: Add extended regs support for power10 platform") Now iregs can carry more bytes of data and this predefined buffer size can result to data loss in perf script output. This patch resolves this issue by making the buffer size dynamic, based on the number of registers needed to print. It also changes the regs_map() return type from int to void, as it is not being used by the set_regs_in_dict(), its only caller. Fixes: 068aeea3773a6f4c ("perf powerpc: Support exposing Performance Monitor Counter SPRs as part of extended regs") Signed-off-by: Kajol Jain <kjain@linux.ibm.com> Tested-by: Nageswara R Sastry <rnsastry@linux.ibm.com> Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Paul Clarke <pc@us.ibm.com> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lore.kernel.org/lkml/20210628062341.155839-1-kjain@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf trace: Fix the perf trace link locationJustin M. Forbes2021-07-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The install perf_dlfilter.h patch included what seems to be a typo in the Makefile.perf, which changed the location of the trace link from '$(DESTDIR_SQ)$(bindir_SQ)/trace' to '$(DESTDIR_SQ)$(dir_SQ)/trace'. This reverts it back to the correct location. Fixes: 0beb218315e06e88 ("perf build: Install perf_dlfilter.h") Signed-off-by: Justin M. Forbes <jforbes@fedoraproject.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Justin M. Forbes <jmforbes@linuxtx.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210706185952.116121-1-jforbes@fedoraproject.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf top: Fix overflow in elf_sec__is_text()Riccardo Mancini2021-07-071-3/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ASan reports a heap-buffer-overflow in elf_sec__is_text when using perf-top. The bug is caused by the fact that secstrs is built from runtime_ss, while shdr is built from syms_ss if shdr.sh_type != SHT_NOBITS. Therefore, they point to two different ELF files. This patch renames secstrs to secstrs_run and adds secstrs_sym, so that the correct secstrs is chosen depending on shdr.sh_type. $ ASAN_OPTIONS=abort_on_error=1:disable_coredump=0:unmap_shadow_on_exit=1 ./perf top ================================================================= ==363148==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x61300009add6 at pc 0x00000049875c bp 0x7f4f56446440 sp 0x7f4f56445bf0 READ of size 1 at 0x61300009add6 thread T6 #0 0x49875b in StrstrCheck(void*, char*, char const*, char const*) (/home/user/linux/tools/perf/perf+0x49875b) #1 0x4d13a2 in strstr (/home/user/linux/tools/perf/perf+0x4d13a2) #2 0xacae36 in elf_sec__is_text /home/user/linux/tools/perf/util/symbol-elf.c:176:9 #3 0xac3ec9 in elf_sec__filter /home/user/linux/tools/perf/util/symbol-elf.c:187:9 #4 0xac2c3d in dso__load_sym /home/user/linux/tools/perf/util/symbol-elf.c:1254:20 #5 0x883981 in dso__load /home/user/linux/tools/perf/util/symbol.c:1897:9 #6 0x8e6248 in map__load /home/user/linux/tools/perf/util/map.c:332:7 #7 0x8e66e5 in map__find_symbol /home/user/linux/tools/perf/util/map.c:366:6 #8 0x7f8278 in machine__resolve /home/user/linux/tools/perf/util/event.c:707:13 #9 0x5f3d1a in perf_event__process_sample /home/user/linux/tools/perf/builtin-top.c:773:6 #10 0x5f30e4 in deliver_event /home/user/linux/tools/perf/builtin-top.c:1197:3 #11 0x908a72 in do_flush /home/user/linux/tools/perf/util/ordered-events.c:244:9 #12 0x905fae in __ordered_events__flush /home/user/linux/tools/perf/util/ordered-events.c:323:8 #13 0x9058db in ordered_events__flush /home/user/linux/tools/perf/util/ordered-events.c:341:9 #14 0x5f19b1 in process_thread /home/user/linux/tools/perf/builtin-top.c:1109:7 #15 0x7f4f6a21a298 in start_thread /usr/src/debug/glibc-2.33-16.fc34.x86_64/nptl/pthread_create.c:481:8 #16 0x7f4f697d0352 in clone ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 0x61300009add6 is located 10 bytes to the right of 332-byte region [0x61300009ac80,0x61300009adcc) allocated by thread T6 here: #0 0x4f3f7f in malloc (/home/user/linux/tools/perf/perf+0x4f3f7f) #1 0x7f4f6a0a88d9 (/lib64/libelf.so.1+0xa8d9) Thread T6 created by T0 here: #0 0x464856 in pthread_create (/home/user/linux/tools/perf/perf+0x464856) #1 0x5f06e0 in __cmd_top /home/user/linux/tools/perf/builtin-top.c:1309:6 #2 0x5ef19f in cmd_top /home/user/linux/tools/perf/builtin-top.c:1762:11 #3 0x7b28c0 in run_builtin /home/user/linux/tools/perf/perf.c:313:11 #4 0x7b119f in handle_internal_command /home/user/linux/tools/perf/perf.c:365:8 #5 0x7b2423 in run_argv /home/user/linux/tools/perf/perf.c:409:2 #6 0x7b0c19 in main /home/user/linux/tools/perf/perf.c:539:3 #7 0x7f4f696f7b74 in __libc_start_main /usr/src/debug/glibc-2.33-16.fc34.x86_64/csu/../csu/libc-start.c:332:16 SUMMARY: AddressSanitizer: heap-buffer-overflow (/home/user/linux/tools/perf/perf+0x49875b) in StrstrCheck(void*, char*, char const*, char const*) Shadow bytes around the buggy address: 0x0c268000b560: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c268000b570: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c268000b580: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c268000b590: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c268000b5a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 =>0x0c268000b5b0: 00 00 00 00 00 00 00 00 00 04[fa]fa fa fa fa fa 0x0c268000b5c0: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00 0x0c268000b5d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c268000b5e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c268000b5f0: 07 fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c268000b600: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd Shadow byte legend (one shadow byte represents 8 application bytes): Addressable: 00 Partially addressable: 01 02 03 04 05 06 07 Heap left redzone: fa Freed heap region: fd Stack left redzone: f1 Stack mid redzone: f2 Stack right redzone: f3 Stack after return: f5 Stack use after scope: f8 Global redzone: f9 Global init order: f6 Poisoned by user: f7 Container overflow: fc Array cookie: ac Intra object redzone: bb ASan internal: fe Left alloca redzone: ca Right alloca redzone: cb Shadow gap: cc ==363148==ABORTING Suggested-by: Jiri Slaby <jirislaby@kernel.org> Signed-off-by: Riccardo Mancini <rickyman7@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Fabian Hemmer <copy@copy.sh> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Remi Bernon <rbernon@codeweavers.com> Link: http://lore.kernel.org/lkml/20210621222108.196219-1-rickyman7@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf annotate: Fix 's' on source line when disasm is emptyRiccardo Mancini2021-07-071-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the disasm is empty, 's' should fail. Instead it seemingly works, hiding the empty lines and causing an assertion error on the next time annotate is called (from within perf report). The problem is caused by a buffer overflow, caused by a wrong exit condition in annotate_browser__find_next_asm_line, which checks browser->b.top instead of browser->b.entries. This patch fixes the issue, making annotate_browser__toggle_source fail if the disasm is empty (nothing happens to the user). Fixes: 6de249d66d2e7881 ("perf annotate: Allow 's' on source code lines") Signed-off-by: Riccardo Mancini <rickyman7@gmail.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Martin Liška <mliska@suse.cz> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210705161524.72953-1-rickyman7@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf probe: Do not show @plt function by defaultMasami Hiramatsu2021-07-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the perf-probe --functions option do not show the PLT stub symbols (*@plt) by default. ----- $ ./perf probe -x /usr/lib64/libc-2.33.so -F | head a64l abort abs accept accept4 access acct addmntent addseverity adjtime ----- Reported-by: Thomas Richter <tmricht@linux.ibm.com> Signed-off-by: Masami Hiramatsu <mhriamat@kernel.org> Acked-by: Thomas Richter <tmricht@linux.ibm.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Stefan Liebler <stli@linux.ibm.com> Cc: Sven Schnelle <svens@linux.ibm.com> Link: http://lore.kernel.org/lkml/162532653450.393143.12621329879630677469.stgit@devnote2 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf symbol-elf: Decode dynsym even if symtab existsMasami Hiramatsu2021-07-071-28/+54
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In Fedora34, libc-2.33.so has both .dynsym and .symtab sections and most of (not all) symbols moved to .dynsym. In this case, perf only decode the symbols in .symtab, and perf probe can not list up the functions in the library. To fix this issue, decode both .symtab and .dynsym sections. Without this fix, ----- $ ./perf probe -x /usr/lib64/libc-2.33.so -F @plt @plt calloc@plt free@plt malloc@plt memalign@plt realloc@plt ----- With this fix. ----- $ ./perf probe -x /usr/lib64/libc-2.33.so -F @plt @plt a64l abort abs accept accept4 access acct addmntent ----- Reported-by: Thomas Richter <tmricht@linux.ibm.com> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Richter <tmricht@linux.ibm.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Stefan Liebler <stli@linux.ibm.com> Cc: Sven Schnelle <svens@linux.ibm.com> Link: http://lore.kernel.org/lkml/162532652681.393143.10163733179955267999.stgit@devnote2 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf probe: Fix debuginfo__new() to enable build-id based debuginfoMasami Hiramatsu2021-07-071-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix debuginfo__new() to set the build-id to dso before dso__read_binary_type_filename() so that it can find DSO_BINARY_TYPE__BUILDID_DEBUGINFO debuginfo correctly. However, this may not change the result, because elfutils (libdwfl) has its own debuginfo finder. With/without this patch, the perf probe correctly find the debuginfo file. This is just a failsafe and keep code's sanity (if you use dso__read_binary_type_filename(), you must set the build-id to the dso.) Reported-by: Thomas Richter <tmricht@linux.ibm.com> Acked-by: Thomas Richter <tmricht@linux.ibm.com> Signed-off-by: Masami Hiramatsu <mhriamat@kernel.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Stefan Liebler <stli@linux.ibm.com> Cc: Sven Schnelle <svens@linux.ibm.com> Link: http://lore.kernel.org/lkml/162532651863.393143.11692691321219235810.stgit@devnote2 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools headers UAPI: Sync files changed by the quotactl_fd new syscallArnaldo Carvalho de Melo2021-07-055-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To pick the changes in these csets: 64c2c2c62f92339b ("quota: Change quotactl_path() systcall to an fd-based one") 65ffb3d69ed3da28 ("quota: Wire up quotactl_fd syscall") That silences these perf build warnings and add support for those new syscalls in tools such as 'perf trace'. For instance, this is now possible: # perf trace -v -e quota* event qualifier tracepoint filter: (common_pid != 158365 && common_pid != 2512) && (id == 179 || id == 443) ^C# That is the filter expression attached to the raw_syscalls:sys_{enter,exit} tracepoints. $ grep quota tools/perf/arch/x86/entry/syscalls/syscall_64.tbl 179 common quotactl sys_quotactl 443 common quotactl_fd sys_quotactl_fd $ This addresses these perf build warnings: Warning: Kernel ABI header at 'tools/include/uapi/asm-generic/unistd.h' differs from latest version at 'include/uapi/asm-generic/unistd.h' diff -u tools/include/uapi/asm-generic/unistd.h include/uapi/asm-generic/unistd.h Warning: Kernel ABI header at 'tools/perf/arch/x86/entry/syscalls/syscall_64.tbl' differs from latest version at 'arch/x86/entry/syscalls/syscall_64.tbl' diff -u tools/perf/arch/x86/entry/syscalls/syscall_64.tbl arch/x86/entry/syscalls/syscall_64.tbl Warning: Kernel ABI header at 'tools/perf/arch/powerpc/entry/syscalls/syscall.tbl' differs from latest version at 'arch/powerpc/kernel/syscalls/syscall.tbl' diff -u tools/perf/arch/powerpc/entry/syscalls/syscall.tbl arch/powerpc/kernel/syscalls/syscall.tbl Warning: Kernel ABI header at 'tools/perf/arch/s390/entry/syscalls/syscall.tbl' differs from latest version at 'arch/s390/kernel/syscalls/syscall.tbl' diff -u tools/perf/arch/s390/entry/syscalls/syscall.tbl arch/s390/kernel/syscalls/syscall.tbl Warning: Kernel ABI header at 'tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl' differs from latest version at 'arch/mips/kernel/syscalls/syscall_n64.tbl' diff -u tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl arch/mips/kernel/syscalls/syscall_n64.tbl Cc: Jan Kara <jack@suse.cz> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools headers UAPI: Sync asm-generic/mman-common.h with the kernelArnaldo Carvalho de Melo2021-07-051-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To pick the changes from: Fixes: 4ca9b3859dac14bb ("mm/madvise: introduce MADV_POPULATE_(READ|WRITE) to prefault page tables") That result in these changes in the tools: $ tools/perf/trace/beauty/madvise_behavior.sh > before $ cp include/uapi/asm-generic/mman-common.h tools/include/uapi/asm-generic/mman-common.h $ tools/perf/trace/beauty/madvise_behavior.sh > after $ diff -u before after --- before 2021-07-05 14:30:15.167212621 -0300 +++ after 2021-07-05 14:30:26.638462594 -0300 @@ -18,6 +18,8 @@ [19] = "KEEPONFORK", [20] = "COLD", [21] = "PAGEOUT", + [22] = "POPULATE_READ", + [23] = "POPULATE_WRITE", [100] = "HWPOISON", [101] = "SOFT_OFFLINE", }; $ I.e. now when madvise gets those behaviours as args, it will be able to translate from the number to a human readable string. This addresses the following perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/asm-generic/mman-common.h' differs from latest version at 'include/uapi/asm-generic/mman-common.h' diff -u tools/include/uapi/asm-generic/mman-common.h include/uapi/asm-generic/mman-common.h Cc: David Hildenbrand <david@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools headers UAPI: Update tools's copy of drm/drm.h headerArnaldo Carvalho de Melo2021-07-051-4/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Picking the changes from: 2e290c8d8d29278b ("drm: document minimum kernel version for DRM_CLIENT_CAP_*") bbf4627ba6415711 ("drm: clarify and linkify DRM_CLIENT_CAP_WRITEBACK_CONNECTORS docs") 88938bf343efbc4d ("drm: reference mode flags in DRM_CLIENT_CAP_* docs") Silencing these perf build warnings: Warning: Kernel ABI header at 'tools/include/uapi/drm/drm.h' differs from latest version at 'include/uapi/drm/drm.h' diff -u tools/include/uapi/drm/drm.h include/uapi/drm/drm.h No changes in tooling as these are just C comment documentation changes. Cc: Simon Ser <contact@emersion.fr> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools headers UAPI: Sync drm/i915_drm.h with the kernel sourcesArnaldo Carvalho de Melo2021-07-051-34/+359
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To pick the changes in: 2459e56fd8af0b47 ("drm/i915/uapi: implement object placement extension") ebcb40298947bdb0 ("drm/i915/uapi: introduce drm_i915_gem_create_ext") 710217292a61110a ("drm/i915/query: Expose memory regions through the query uAPI") e3bdccafb5bcfab2 ("drm/i915/uapi: convert i915_query and friend to kernel doc") 19d053d477a14506 ("drm/i915/uapi: convert i915_user_extension to kernel doc") 2ef6a01fb636997b ("drm/i915/uapi: fix kernel doc warnings") That picks a new ioctl: $ tools/perf/trace/beauty/drm_ioctl.sh > before $ cp include/uapi/drm/i915_drm.h tools/include/uapi/drm/i915_drm.h $ tools/perf/trace/beauty/drm_ioctl.sh > after $ diff -u before after --- before 2021-07-05 14:25:13.247680316 -0300 +++ after 2021-07-05 14:25:22.454874111 -0300 @@ -166,4 +166,5 @@ [DRM_COMMAND_BASE + 0x39] = "I915_QUERY", [DRM_COMMAND_BASE + 0x3a] = "I915_GEM_VM_CREATE", [DRM_COMMAND_BASE + 0x3b] = "I915_GEM_VM_DESTROY", + [DRM_COMMAND_BASE + 0x3c] = "I915_GEM_CREATE_EXT", }; $ Addressing this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/drm/i915_drm.h' differs from latest version at 'include/uapi/drm/i915_drm.h' diff -u tools/include/uapi/drm/i915_drm.h include/uapi/drm/i915_drm.h Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com> Cc: Matthew Auld <matthew.auld@intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools include UAPI: Sync sound/asound.h copy with the kernel sourcesArnaldo Carvalho de Melo2021-07-051-2/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Picking the changes from: 08fdced60ca08e34 ("ALSA: rawmidi: Add framing mode") Which entails no changes in the tooling side as it doesn't introduce new ioctls. To silence this perf tools build warning: Warning: Kernel ABI header at 'tools/include/uapi/sound/asound.h' differs from latest version at 'include/uapi/sound/asound.h' diff -u tools/include/uapi/sound/asound.h include/uapi/sound/asound.h Cc: David Henningsson <coding@diwic.se> Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf stat: Enable BPF counter with --for-each-cgroupNamhyung Kim2021-07-057-1/+523
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Recently bperf was added to use BPF to count perf events for various purposes. This is an extension for the approach and targetting to cgroup usages. Unlike the other bperf, it doesn't share the events with other processes but it'd reduce unnecessary events (and the overhead of multiplexing) for each monitored cgroup within the perf session. When --for-each-cgroup is used with --bpf-counters, it will open cgroup-switches event per cpu internally and attach the new BPF program to read given perf_events and to aggregate the results for cgroups. It's only called when task is switched to a task in a different cgroup. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20210701211227.1403788-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf report: Fix --task and --stat with pipe inputNamhyung Kim2021-07-051-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current 'perf report' fails to process a pipe input when --task or --stat options are used. This is because they reset all the tool callbacks and fails to find a matching event for a sample. When pipe input is used, the event info is passed via ATTR records so it needs to handle that operation. Otherwise the following error occurs. Note, -14 (= -EFAULT) comes from evlist__parse_sample(): # perf record -a -o- sleep 1 | perf report -i- --stat Can't parse sample, err = -14 0x271044 [0x38]: failed to process type: 9 Error: failed to process sample # Committer testing: Before: $ perf record -o- sleep 1 | perf report -i- --stat Can't parse sample, err = -14 [ perf record: Woken up 1 times to write data ] 0x1350 [0x30]: failed to process type: 9 Error: failed to process sample [ perf record: Captured and wrote 0.000 MB - ] $ After: $ perf record -o- sleep 1 | perf report -i- --stat [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.000 MB - ] Aggregated stats: TOTAL events: 41 COMM events: 2 ( 4.9%) EXIT events: 1 ( 2.4%) SAMPLE events: 9 (22.0%) MMAP2 events: 4 ( 9.8%) ATTR events: 1 ( 2.4%) FINISHED_ROUND events: 1 ( 2.4%) THREAD_MAP events: 1 ( 2.4%) CPU_MAP events: 1 ( 2.4%) EVENT_UPDATE events: 1 ( 2.4%) TIME_CONV events: 1 ( 2.4%) FEATURE events: 19 (46.3%) cycles:uhH stats: SAMPLE events: 9 $ Fixes: a4a4d0a7a2b20f78 ("perf report: Add --stats option to display quick data statistics") Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210630043058.1131295-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | Merge tag 'trace-v5.14-2' of ↵Linus Torvalds2021-07-091-0/+18
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing fix and cleanup from Steven Rostedt: "Tracing fix for histograms and a clean up in ftrace: - Fixed a bug that broke the .sym-offset modifier and added a test to make sure nothing breaks it again. - Replace a list_del/list_add() with a list_move()" * tag 'trace-v5.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ftrace: Use list_move instead of list_del/list_add tracing/selftests: Add tests to test histogram sym and sym-offset modifiers tracing/histograms: Fix parsing of "sym-offset" modifier
| * | tracing/selftests: Add tests to test histogram sym and sym-offset modifiersSteven Rostedt (VMware)2021-07-081-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a test to the tracing selftests that will catch if the .sym or .sym-offset modifiers break in the future. Link: https://lkml.kernel.org/r/20210707121451.101a1002@oasis.local.home Acked-by: Tom Zanussi <zanussi@kernel.org> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
* | | selftest/mremap_test: avoid crash with static buildAneesh Kumar K.V2021-07-081-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With a large mmap map size, we can overlap with the text area and using MAP_FIXED results in unmapping that area. Switch to MAP_FIXED_NOREPLACE and handle the EEXIST error. Link: https://lkml.kernel.org/r/20210616045239.370802-3-aneesh.kumar@linux.ibm.com Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Reviewed-by: Kalesh Singh <kaleshsingh@google.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Hugh Dickins <hughd@google.com> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | selftest/mremap_test: update the test to handle pagesize other than 4KAneesh Kumar K.V2021-07-081-52/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch series "mrermap fixes", v2. This patch (of 6): Instead of hardcoding 4K page size fetch it using sysconf(). For the performance measurements test still assume 2M and 1G are hugepage sizes. Link: https://lkml.kernel.org/r/20210616045239.370802-1-aneesh.kumar@linux.ibm.com Link: https://lkml.kernel.org/r/20210616045239.370802-2-aneesh.kumar@linux.ibm.com Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Reviewed-by: Kalesh Singh <kaleshsingh@google.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Kirill A. Shutemov <kirill@shutemov.name> Cc: Hugh Dickins <hughd@google.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | secretmem: test: add basic selftest for memfd_secret(2)Mike Rapoport2021-07-084-1/+316
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The test verifies that file descriptor created with memfd_secret does not allow read/write operations, that secret memory mappings respect RLIMIT_MEMLOCK and that remote accesses with process_vm_read() and ptrace() to the secret memory fail. Link: https://lkml.kernel.org/r/20210518072034.31572-8-rppt@kernel.org Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christopher Lameter <cl@linux.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: Elena Reshetova <elena.reshetova@intel.com> Cc: Hagen Paul Pfeifer <hagen@jauu.net> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Bottomley <jejb@linux.ibm.com> Cc: "Kirill A. Shutemov" <kirill@shutemov.name> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Palmer Dabbelt <palmerdabbelt@google.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rick Edgecombe <rick.p.edgecombe@intel.com> Cc: Roman Gushchin <guro@fb.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tycho Andersen <tycho@tycho.ws> Cc: Will Deacon <will@kernel.org> Cc: kernel test robot <lkp@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge tag 'x86-fpu-2021-07-07' of ↵Linus Torvalds2021-07-074-7/+260
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fpu updates from Thomas Gleixner: "Fixes and improvements for FPU handling on x86: - Prevent sigaltstack out of bounds writes. The kernel unconditionally writes the FPU state to the alternate stack without checking whether the stack is large enough to accomodate it. Check the alternate stack size before doing so and in case it's too small force a SIGSEGV instead of silently corrupting user space data. - MINSIGSTKZ and SIGSTKSZ are constants in signal.h and have never been updated despite the fact that the FPU state which is stored on the signal stack has grown over time which causes trouble in the field when AVX512 is available on a CPU. The kernel does not expose the minimum requirements for the alternate stack size depending on the available and enabled CPU features. ARM already added an aux vector AT_MINSIGSTKSZ for the same reason. Add it to x86 as well. - A major cleanup of the x86 FPU code. The recent discoveries of XSTATE related issues unearthed quite some inconsistencies, duplicated code and other issues. The fine granular overhaul addresses this, makes the code more robust and maintainable, which allows to integrate upcoming XSTATE related features in sane ways" * tag 'x86-fpu-2021-07-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (74 commits) x86/fpu/xstate: Clear xstate header in copy_xstate_to_uabi_buf() again x86/fpu/signal: Let xrstor handle the features to init x86/fpu/signal: Handle #PF in the direct restore path x86/fpu: Return proper error codes from user access functions x86/fpu/signal: Split out the direct restore code x86/fpu/signal: Sanitize copy_user_to_fpregs_zeroing() x86/fpu/signal: Sanitize the xstate check on sigframe x86/fpu/signal: Remove the legacy alignment check x86/fpu/signal: Move initial checks into fpu__restore_sig() x86/fpu: Mark init_fpstate __ro_after_init x86/pkru: Remove xstate fiddling from write_pkru() x86/fpu: Don't store PKRU in xstate in fpu_reset_fpstate() x86/fpu: Remove PKRU handling from switch_fpu_finish() x86/fpu: Mask PKRU from kernel XRSTOR[S] operations x86/fpu: Hook up PKRU into ptrace() x86/fpu: Add PKRU storage outside of task XSAVE buffer x86/fpu: Dont restore PKRU in fpregs_restore_userspace() x86/fpu: Rename xfeatures_mask_user() to xfeatures_mask_uabi() x86/fpu: Move FXSAVE_LEAK quirk info __copy_kernel_to_fpregs() x86/fpu: Rename __fpregs_load_activate() to fpregs_restore_userregs() ...
| * \ \ Merge x86/urgent into x86/fpuBorislav Petkov2021-06-23121-904/+3424
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pick up dependent changes which either went mainline (x86/urgent is based on -rc7 and that contains them) as urgent fixes and the current x86/urgent branch which contains two more urgent fixes, so that the bigger FPU rework can base off ontop. Signed-off-by: Borislav Petkov <bp@suse.de>
| * | | | selftests/x86: Test signal frame XSTATE header corruption handlingAndy Lutomirski2021-06-092-1/+116
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is very heavily based on some code from Thomas Gleixner. On a system without XSAVES, it triggers the WARN_ON(): Bad FPU state detected at copy_kernel_to_fpregs+0x2f/0x40, reinitializing FPU registers. [ bp: Massage in nitpicks. ] Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Rik van Riel <riel@surriel.com> Link: https://lkml.kernel.org/r/20210608144346.234764986@linutronix.de
| * | | | selftest/x86/signal: Include test cases for validating sigaltstackChang S. Bae2021-05-192-1/+129
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The test measures the kernel's signal delivery with different (enough vs. insufficient) stack sizes. Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Len Brown <len.brown@intel.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20210518200320.17239-7-chang.seok.bae@intel.com
| * | | | selftest/sigaltstack: Use the AT_MINSIGSTKSZ aux vector if availableChang S. Bae2021-05-191-5/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The SIGSTKSZ constant may not represent enough stack size in some architectures as the hardware state size grows. Use getauxval(AT_MINSIGSTKSZ) to increase the stack size. Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Len Brown <len.brown@intel.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20210518200320.17239-5-chang.seok.bae@intel.com
* | | | | Merge tag 'char-misc-5.14-rc1' of ↵Linus Torvalds2021-07-054-8/+23
|\ \ \ \ \ | |_|_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char / misc driver updates from Greg KH: "Here is the big set of char / misc and other driver subsystem updates for 5.14-rc1. Included in here are: - habanalabs driver updates - fsl-mc driver updates - comedi driver updates - fpga driver updates - extcon driver updates - interconnect driver updates - mei driver updates - nvmem driver updates - phy driver updates - pnp driver updates - soundwire driver updates - lots of other tiny driver updates for char and misc drivers This is looking more and more like the "various driver subsystems mushed together" tree... All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (292 commits) mcb: Use DEFINE_RES_MEM() helper macro and fix the end address PNP: moved EXPORT_SYMBOL so that it immediately followed its function/variable bus: mhi: pci-generic: Add missing 'pci_disable_pcie_error_reporting()' calls bus: mhi: Wait for M2 state during system resume bus: mhi: core: Fix power down latency intel_th: Wait until port is in reset before programming it intel_th: msu: Make contiguous buffers uncached intel_th: Remove an unused exit point from intel_th_remove() stm class: Spelling fix nitro_enclaves: Set Bus Master for the NE PCI device misc: ibmasm: Modify matricies to matrices misc: vmw_vmci: return the correct errno code siox: Simplify error handling via dev_err_probe() fpga: machxo2-spi: Address warning about unused variable lkdtm/heap: Add init_on_alloc tests selftests/lkdtm: Enable various testable CONFIGs lkdtm: Add CONFIG hints in errors where possible lkdtm: Enable DOUBLE_FAULT on all architectures lkdtm/heap: Add vmalloc linear overflow test lkdtm/bugs: XFAIL UNALIGNED_LOAD_STORE_WRITE ...
| * | | | lkdtm/heap: Add init_on_alloc testsKees Cook2021-06-242-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add SLAB and page allocator tests for init_on_alloc. Testing for init_on_free was already happening via the poisoning tests. Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210623203936.3151093-10-keescook@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | | selftests/lkdtm: Enable various testable CONFIGsKees Cook2021-06-241-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a handful of LKDTM-testable features that depend on certain CONFIGs so that they are visible in logs for CI systems that run the selftests. Others could be added, but may be seen as having too high a trade-off for general testing. Cc: kernelci@groups.io Suggested-by: Guillaume Tucker <guillaume.tucker@collabora.com> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210623203936.3151093-9-keescook@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | | lkdtm: Add CONFIG hints in errors where possibleKees Cook2021-06-241-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For various failure conditions, try to include some details about where to look for reasons about the failure. Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210623203936.3151093-8-keescook@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | | lkdtm/heap: Add vmalloc linear overflow testKees Cook2021-06-241-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Similar to the existing slab overflow and stack exhaustion tests, add VMALLOC_LINEAR_OVERFLOW (and rename the slab test SLAB_LINEAR_OVERFLOW). Additionally unmarks the test as destructive. (It should be safe in the face of misbehavior.) Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210623203936.3151093-6-keescook@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | | selftests/lkdtm: Fix expected text for free poisonKees Cook2021-06-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Freed memory poisoning can be tested a few ways, so update the expected text to reflect the non-Oopsing alternative. Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210623203936.3151093-4-keescook@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | | selftests/lkdtm: Fix expected text for CR4 pinningKees Cook2021-06-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The error text for CR4 pinning changed. Update the test to match. Fixes: a13b9d0b9721 ("x86/cpu: Use pinning mask for CR4 bits needing to be 0") Cc: stable@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210623203936.3151093-3-keescook@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | | selftests/lkdtm: Avoid needing explicit sub-shellKees Cook2021-06-241-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some environments do not set $SHELL when running tests. There's no need to use $SHELL here anyway, since "cat" can be used to receive any delivered signals from the kernel. Additionally avoid using bash-isms in the command, and record stderr for posterity. Fixes: 46d1a0f03d66 ("selftests/lkdtm: Add tests for LKDTM targets") Cc: stable@vger.kernel.org Suggested-by: Guillaume Tucker <guillaume.tucker@collabora.com> Suggested-by: David Laight <David.Laight@ACULAB.COM> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210623203936.3151093-2-keescook@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | | | Merge branch 'core-rcu-2021.07.04' of ↵Linus Torvalds2021-07-0416-54/+422
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu Pull RCU updates from Paul McKenney: - Bitmap parsing support for "all" as an alias for all bits - Documentation updates - Miscellaneous fixes, including some that overlap into mm and lockdep - kvfree_rcu() updates - mem_dump_obj() updates, with acks from one of the slab-allocator maintainers - RCU NOCB CPU updates, including limited deoffloading - SRCU updates - Tasks-RCU updates - Torture-test updates * 'core-rcu-2021.07.04' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (78 commits) tasks-rcu: Make show_rcu_tasks_gp_kthreads() be static inline rcu-tasks: Make ksoftirqd provide RCU Tasks quiescent states rcu: Add missing __releases() annotation rcu: Remove obsolete rcu_read_unlock() deadlock commentary rcu: Improve comments describing RCU read-side critical sections rcu: Create an unrcu_pointer() to remove __rcu from a pointer srcu: Early test SRCU polling start rcu: Fix various typos in comments rcu/nocb: Unify timers rcu/nocb: Prepare for fine-grained deferred wakeup rcu/nocb: Only cancel nocb timer if not polling rcu/nocb: Delete bypass_timer upon nocb_gp wakeup rcu/nocb: Cancel nocb_timer upon nocb_gp wakeup rcu/nocb: Allow de-offloading rdp leader rcu/nocb: Directly call __wake_nocb_gp() from bypass timer rcu: Don't penalize priority boosting when there is nothing to boost rcu: Point to documentation of ordering guarantees rcu: Make rcu_gp_cleanup() be noinline for tracing rcu: Restrict RCU_STRICT_GRACE_PERIOD to at most four CPUs rcu: Make show_rcu_gp_kthreads() dump rcu_node structures blocking GP ...
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| *---. \ \ \ \ Merge branches 'bitmaprange.2021.05.10c', 'doc.2021.05.10c', ↵Paul E. McKenney2021-05-1816-54/+422
| |\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'fixes.2021.05.13a', 'kvfree_rcu.2021.05.10c', 'mmdumpobj.2021.05.10c', 'nocb.2021.05.12a', 'srcu.2021.05.12a', 'tasks.2021.05.18a' and 'torture.2021.05.10c' into HEAD bitmaprange.2021.05.10c: Allow "all" for bitmap ranges. doc.2021.05.10c: Documentation updates. fixes.2021.05.13a: Miscellaneous fixes. kvfree_rcu.2021.05.10c: kvfree_rcu() updates. mmdumpobj.2021.05.10c: mem_dump_obj() updates. nocb.2021.05.12a: RCU NOCB CPU updates, including limited deoffloading. srcu.2021.05.12a: SRCU updates. tasks.2021.05.18a: Tasks-RCU updates. torture.2021.05.10c: Torture-test updates.
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-05 03:39:35 +0100