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2019-05-19Merge branch 'perf-core-for-linus' of ↵Linus Torvalds94-214/+5414
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf tooling updates from Ingo Molnar: "perf.data: - Streaming compression of perf ring buffer into PERF_RECORD_COMPRESSED user space records, resulting in ~3-5x perf.data file size reduction on variety of tested workloads what saves storage space on larger server systems where perf.data size can easily reach several tens or even hundreds of GiBs, especially when profiling with DWARF-based stacks and tracing of context switches. perf record: - Improve -user-regs/intr-regs suggestions to overcome errors perf annotate: - Remove hist__account_cycles() from callback, speeding up branch processing (perf record -b) perf stat: - Add a 'percore' event qualifier, e.g.: -e cpu/event=0,umask=0x3,percore=1/, that sums up the event counts for both hardware threads in a core. We can already do this with --per-core, but it's often useful to do this together with other metrics that are collected per hardware thread. I.e. now its possible to do this per-event, and have it mixed with other events not aggregated by core. arm64: - Map Brahma-B53 CPUID to cortex-a53 events. - Add Cortex-A57 and Cortex-A72 events. csky: - Add DWARF register mappings for libdw, allowing --call-graph=dwarf to work on the C-SKY arch. x86: - Add support for recording and printing XMM registers, available, for instance, on Icelake. - Add uncore_upi (Intel's "Ultra Path Interconnect" events) JSON support. UPI replaced the Intel QuickPath Interconnect (QPI) in Xeon Skylake-SP. Intel PT: - Fix instructions sampling rate. - Timestamp fixes. - Improve exported-sql-viewer GUI, allowing, for instance, to copy'n'paste the trees, useful for e-mailing" * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (73 commits) perf stat: Support 'percore' event qualifier perf stat: Factor out aggregate counts printing perf tools: Add a 'percore' event qualifier perf docs: Add description for stderr perf intel-pt: Fix sample timestamp wrt non-taken branches perf intel-pt: Fix improved sample timestamp perf intel-pt: Fix instructions sampling rate perf regs x86: Add X86 specific arch__intr_reg_mask() perf parse-regs: Add generic support for arch__intr/user_reg_mask() perf parse-regs: Split parse_regs perf vendor events arm64: Add Cortex-A57 and Cortex-A72 events perf vendor events arm64: Map Brahma-B53 CPUID to cortex-a53 events perf vendor events arm64: Remove [[:xdigit:]] wildcard perf jevents: Remove unused variable perf test zstd: Fixup verbose mode output perf tests: Implement Zstd comp/decomp integration test perf inject: Enable COMPRESSED record decompression perf report: Implement perf.data record decompression perf record: Implement -z,--compression_level[=<n>] option perf report: Add stub processing of compressed events for -D ...
2019-05-19Merge branch 'core-urgent-for-linus' of ↵Linus Torvalds1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull core fixes from Ingo Molnar: "This fixes a particularly thorny munmap() bug with MPX, plus fixes a host build environment assumption in objtool" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Allow AR to be overridden with HOSTAR x86/mpx, mm/core: Fix recursive munmap() corruption
2019-05-18Merge tag 'perf-core-for-mingo-5.2-20190517' of ↵Ingo Molnar94-214/+5414
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: perf.data: Alexey Budankov: - Streaming compression of perf ring buffer into PERF_RECORD_COMPRESSED user space records, resulting in ~3-5x perf.data file size reduction on variety of tested workloads what saves storage space on larger server systems where perf.data size can easily reach several tens or even hundreds of GiBs, especially when profiling with DWARF-based stacks and tracing of context switches. perf record: Arnaldo Carvalho de Melo - Improve -user-regs/intr-regs suggestions to overcome errors. perf annotate: Jin Yao: - Remove hist__account_cycles() from callback, speeding up branch processing (perf record -b). perf stat: - Add a 'percore' event qualifier, e.g.: -e cpu/event=0,umask=0x3,percore=1/, that sums up the event counts for both hardware threads in a core. We can already do this with --per-core, but it's often useful to do this together with other metrics that are collected per hardware thread. I.e. now its possible to do this per-event, and have it mixed with other events not aggregated by core. core libraries: Donald Yandt: - Check for errors when doing fgets(/proc/version). Jiri Olsa: - Speed up report for perf compiled with linbunwind. tools headers: Arnaldo Carvalho de Melo - Update memcpy_64.S, x86's kvm.h and pt_regs.h. arm64: Florian Fainelli: - Map Brahma-B53 CPUID to cortex-a53 events. - Add Cortex-A57 and Cortex-A72 events. csky: Mao Han: - Add DWARF register mappings for libdw, allowing --call-graph=dwarf to work on the C-SKY arch. x86: Andi Kleen/Kan Liang: - Add support for recording and printing XMM registers, available, for instance, on Icelake. Kan Liang: - Add uncore_upi (Intel's "Ultra Path Interconnect" events) JSON support. UPI replaced the Intel QuickPath Interconnect (QPI) in Xeon Skylake-SP. Intel PT: Adrian Hunter . Fix instructions sampling rate. . Timestamp fixes. . Improve exported-sql-viewer GUI, allowing, for instance, to copy'n'paste the trees, useful for e-mailing. Documentation: Thomas Richter: - Add description for 'perf --debug stderr=1', which redirects stderr to stdout. libtraceevent: Tzvetomir Stoyanov: - Add man pages for the various APIs. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-05-17Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds8-4/+398
Pull KVM updates from Paolo Bonzini: "ARM: - support for SVE and Pointer Authentication in guests - PMU improvements POWER: - support for direct access to the POWER9 XIVE interrupt controller - memory and performance optimizations x86: - support for accessing memory not backed by struct page - fixes and refactoring Generic: - dirty page tracking improvements" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (155 commits) kvm: fix compilation on aarch64 Revert "KVM: nVMX: Expose RDPMC-exiting only when guest supports PMU" kvm: x86: Fix L1TF mitigation for shadow MMU KVM: nVMX: Disable intercept for FS/GS base MSRs in vmcs02 when possible KVM: PPC: Book3S: Remove useless checks in 'release' method of KVM device KVM: PPC: Book3S HV: XIVE: Fix spelling mistake "acessing" -> "accessing" KVM: PPC: Book3S HV: Make sure to load LPID for radix VCPUs kvm: nVMX: Set nested_run_pending in vmx_set_nested_state after checks complete tests: kvm: Add tests for KVM_SET_NESTED_STATE KVM: nVMX: KVM_SET_NESTED_STATE - Tear down old EVMCS state before setting new state tests: kvm: Add tests for KVM_CAP_MAX_VCPUS and KVM_CAP_MAX_CPU_ID tests: kvm: Add tests to .gitignore KVM: Introduce KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2 KVM: Fix kvm_clear_dirty_log_protect off-by-(minus-)one KVM: Fix the bitmap range to copy during clear dirty KVM: arm64: Fix ptrauth ID register masking logic KVM: x86: use direct accessors for RIP and RSP KVM: VMX: Use accessors for GPRs outside of dedicated caching logic KVM: x86: Omit caching logic for always-available GPRs kvm, x86: Properly check whether a pfn is an MMIO or not ...
2019-05-17objtool: Allow AR to be overridden with HOSTARNathan Chancellor1-1/+2
Currently, this Makefile hardcodes GNU ar, meaning that if it is not available, there is no way to supply a different one and the build will fail. $ make AR=llvm-ar CC=clang LD=ld.lld HOSTAR=llvm-ar HOSTCC=clang \ HOSTLD=ld.lld HOSTLDFLAGS=-fuse-ld=lld defconfig modules_prepare ... AR /out/tools/objtool/libsubcmd.a /bin/sh: 1: ar: not found ... Follow the logic of HOST{CC,LD} and allow the user to specify a different ar tool via HOSTAR (which is used elsewhere in other tools/ Makefiles). Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Mukesh Ojha <mojha@codeaurora.org> Cc: <stable@vger.kernel.org> 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/80822a9353926c38fd7a152991c6292491a9d0e8.1558028966.git.jpoimboe@redhat.com Link: https://github.com/ClangBuiltLinux/linux/issues/481 Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-05-17Merge tag 'linux-kselftest-5.2-rc1-2' of ↵Linus Torvalds32-220/+875
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull more kselftest updates from Shuah Khan: - kselftest framework bpf build/test workflow regression fix - Fix to kselftest install to use default install path - Fix to kselftest KBUILD_OUTPUT builds to not clutter main KBUILD_OUTPUT directory with selftest objects - .gitignore fixes (Kelsey Skunberg) - rseq selftests updates (Mathieu Desnoyers and Martin Schwidefsky) They change the per-architecture pre-abort signatures to ensure those are valid trap instructions. The way exit points are presented to debuggers is enhanced, ensuring all exit points are present, so debuggers don't have to disassemble rseq critical section to properly skip over them. Discussions with the glibc community is reaching a consensus of exposing a __rseq_handled symbol from glibc to coexist with rseq early adopters. Update the rseq selftest code to expose and use this symbol. Support for compiling asm goto with clang is added with the "-no-integrated-as" compiler switch, similarly to the top level kernel Makefile. - kselftest Makefile test run output refactoring and making test output TAP13 compliant from Kees Cook: This re-factors the selftest Makefiles to extract the test running logic to be reused between "run_tests" and "emit_tests", while also fixing up the test output to be TAP version 13 compliant: - added "plan" line - fixed result line syntax - moved all test output to be "# "-prefixed as TAP "diagnostic" lines The prefixing code includes a fallback mode for limited execution environments. Additionally, the plan lines are fixed for all callers of kselftest.h. * tag 'linux-kselftest-5.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (25 commits) selftests: avoid KBUILD_OUTPUT dir cluttering with selftest objects selftests: drivers: Create .gitignore to include /dma-buf/udmabuf selftests: pidfd: Create .gitignore to include pidfd_test selftests: fix bpf build/test workflow regression when KBUILD_OUTPUT is set selftests: fix install target to use default install path rseq/selftests: add -no-integrated-as for clang rseq/selftests: mips: use break instruction for RSEQ_SIG rseq/selftests: powerpc code signature: generate valid instructions rseq/selftests: aarch64 code signature: handle big-endian environment rseq/selftests: arm: use udf instruction for RSEQ_SIG rseq/selftests: s390: use trap4 for RSEQ_SIG rseq/selftests: x86: use ud1 instruction as RSEQ_SIG opcode rseq/selftests: s390: use jg instruction for jumps outside of the asm rseq/selftests: Use __rseq_handled symbol to coexist with glibc rseq/selftests: Introduce __rseq_cs_ptr_array, rename __rseq_table to __rseq_cs rseq/selftests: Add __rseq_exit_point_array section for debuggers rseq/selftests: x86: Work-around bogus gcc-8 optimisation selftests: Add test plan API to kselftest.h and adjust callers selftests: Remove KSFT_TAP_LEVEL selftests: Move test output to diagnostic lines ...
2019-05-16Merge branch 'core-urgent-for-linus' of ↵Linus Torvalds2-5/+8
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull core fixes from Ingo Molnar: "A handful of objtool updates, plus a documentation addition for __ab_c_size()" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Fix whitelist documentation typo objtool: Fix function fallthrough detection objtool: Don't use ignore flag for fake jumps overflow.h: Add comment documenting __ab_c_size()
2019-05-16perf stat: Support 'percore' event qualifierJin Yao4-7/+69
With this patch, we can use the 'percore' event qualifier in perf-stat. root@skl:/tmp# perf stat -e cpu/event=0,umask=0x3,percore=1/,cpu/event=0,umask=0x3/ -a -A -I1000 1.000773050 S0-C0 98,352,832 cpu/event=0,umask=0x3,percore=1/ (50.01%) 1.000773050 S0-C1 103,763,057 cpu/event=0,umask=0x3,percore=1/ (50.02%) 1.000773050 S0-C2 196,776,995 cpu/event=0,umask=0x3,percore=1/ (50.02%) 1.000773050 S0-C3 176,493,779 cpu/event=0,umask=0x3,percore=1/ (50.02%) 1.000773050 CPU0 47,699,641 cpu/event=0,umask=0x3/ (50.02%) 1.000773050 CPU1 49,052,451 cpu/event=0,umask=0x3/ (49.98%) 1.000773050 CPU2 102,771,422 cpu/event=0,umask=0x3/ (49.98%) 1.000773050 CPU3 100,784,662 cpu/event=0,umask=0x3/ (49.98%) 1.000773050 CPU4 43,171,342 cpu/event=0,umask=0x3/ (49.98%) 1.000773050 CPU5 54,152,158 cpu/event=0,umask=0x3/ (49.98%) 1.000773050 CPU6 93,618,410 cpu/event=0,umask=0x3/ (49.98%) 1.000773050 CPU7 74,477,589 cpu/event=0,umask=0x3/ (49.99%) In this example, we count the event 'ref-cycles' per-core and per-CPU in one perf stat command-line. From the output, we can see: S0-C0 = CPU0 + CPU4 S0-C1 = CPU1 + CPU5 S0-C2 = CPU2 + CPU6 S0-C3 = CPU3 + CPU7 So the result is expected (tiny difference is ignored). Note that, the 'percore' event qualifier needs to use with option '-A'. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Tested-by: Ravi Bangoria <ravi.bangoria@linux.ibm.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://lkml.kernel.org/r/1555077590-27664-4-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16perf stat: Factor out aggregate counts printingJin Yao1-25/+39
Move the aggregate counts printing to a new function print_counter_aggrdata, which will be used in following patches. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Tested-by: Ravi Bangoria <ravi.bangoria@linux.ibm.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://lkml.kernel.org/r/1555077590-27664-3-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16perf tools: Add a 'percore' event qualifierJin Yao6-0/+46
Add a 'percore' event qualifier, like cpu/event=0,umask=0x3,percore=1/, that sums up the event counts for both hardware threads in a core. We can already do this with --per-core, but it's often useful to do this together with other metrics that are collected per hardware thread. So we need to support this per-core counting on a event level. This can be implemented in only the user tool, no kernel support needed. v4: --- 1. Add Arnaldo's patch which updates the documentation for this new qualifier. 2. Rebase to latest perf/core branch v3: --- Simplify the code according to Jiri's comments. Before: "return term->val.percore ? true : false;" Now: "return term->val.percore;" v2: --- Change the qualifier name from 'coresum' to 'percore' according to comments from Jiri and Andi. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Tested-by: Ravi Bangoria <ravi.bangoria@linux.ibm.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://lkml.kernel.org/r/1555077590-27664-2-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16perf docs: Add description for stderrThomas Richter1-0/+2
'perf report' displays recorded data on the screen and emits warnings and debug messages in the status line (last one on screen). perf also supports the possibility to write all debug messages to stderr (instead of writing them to the status line). This is achieved with the following command: # ./perf --debug stderr=1 report -vvvvv -i ~/fast.data 2>/tmp/2 # ll /tmp/2 -rw-rw-r-- 1 tmricht tmricht 5420835 May 7 13:46 /tmp/2 # The usage of variable stderr=1 is not documented, so add it to the perf man page. Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Link: http://lkml.kernel.org/r/20190513080220.91966-1-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16perf intel-pt: Fix sample timestamp wrt non-taken branchesAdrian Hunter1-1/+4
The sample timestamp is updated to ensure that the timestamp represents the time of the sample and not a branch that the decoder is still walking towards. The sample timestamp is updated when the decoder returns, but the decoder does not return for non-taken branches. Update the sample timestamp then also. Note that commit 3f04d98e972b5 ("perf intel-pt: Improve sample timestamp") was also a stable fix and appears, for example, in v4.4 stable tree as commit a4ebb58fd124 ("perf intel-pt: Improve sample timestamp"). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org # v4.4+ Fixes: 3f04d98e972b ("perf intel-pt: Improve sample timestamp") Link: http://lkml.kernel.org/r/20190510124143.27054-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16perf intel-pt: Fix improved sample timestampAdrian Hunter1-3/+10
The decoder uses its current timestamp in samples. Usually that is a timestamp that has already passed, but in some cases it is a timestamp for a branch that the decoder is walking towards, and consequently hasn't reached. The intel_pt_sample_time() function decides which is which, but was not handling TNT packets exactly correctly. In the case of TNT, the timestamp applies to the first branch, so the decoder must first walk to that branch. That means intel_pt_sample_time() should return true for TNT, and this patch makes that change. However, if the first branch is a non-taken branch (i.e. a 'N'), then intel_pt_sample_time() needs to return false for subsequent taken branches in the same TNT packet. To handle that, introduce a new state INTEL_PT_STATE_TNT_CONT to distinguish the cases. Note that commit 3f04d98e972b5 ("perf intel-pt: Improve sample timestamp") was also a stable fix and appears, for example, in v4.4 stable tree as commit a4ebb58fd124 ("perf intel-pt: Improve sample timestamp"). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org # v4.4+ Fixes: 3f04d98e972b5 ("perf intel-pt: Improve sample timestamp") Link: http://lkml.kernel.org/r/20190510124143.27054-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16perf intel-pt: Fix instructions sampling rateAdrian Hunter1-3/+10
The timestamp used to determine if an instruction sample is made, is an estimate based on the number of instructions since the last known timestamp. A consequence is that it might go backwards, which results in extra samples. Change it so that a sample is only made when the timestamp goes forwards. Note this does not affect a sampling period of 0 or sampling periods specified as a count of instructions. Example: Before: $ perf script --itrace=i10us ls 13812 [003] 2167315.222583: 3270 instructions:u: 7fac71e2e494 __GI___tunables_init+0xf4 (/lib/x86_64-linux-gnu/ld-2.28.so) ls 13812 [003] 2167315.222667: 30902 instructions:u: 7fac71e2da0f _dl_cache_libcmp+0x2f (/lib/x86_64-linux-gnu/ld-2.28.so) ls 13812 [003] 2167315.222667: 10 instructions:u: 7fac71e2d9ff _dl_cache_libcmp+0x1f (/lib/x86_64-linux-gnu/ld-2.28.so) ls 13812 [003] 2167315.222667: 8 instructions:u: 7fac71e2d9ea _dl_cache_libcmp+0xa (/lib/x86_64-linux-gnu/ld-2.28.so) ls 13812 [003] 2167315.222667: 14 instructions:u: 7fac71e2d9ea _dl_cache_libcmp+0xa (/lib/x86_64-linux-gnu/ld-2.28.so) ls 13812 [003] 2167315.222667: 6 instructions:u: 7fac71e2d9ff _dl_cache_libcmp+0x1f (/lib/x86_64-linux-gnu/ld-2.28.so) ls 13812 [003] 2167315.222667: 14 instructions:u: 7fac71e2d9ff _dl_cache_libcmp+0x1f (/lib/x86_64-linux-gnu/ld-2.28.so) ls 13812 [003] 2167315.222667: 4 instructions:u: 7fac71e2dab2 _dl_cache_libcmp+0xd2 (/lib/x86_64-linux-gnu/ld-2.28.so) ls 13812 [003] 2167315.222728: 16423 instructions:u: 7fac71e2477a _dl_map_object_deps+0x1ba (/lib/x86_64-linux-gnu/ld-2.28.so) ls 13812 [003] 2167315.222734: 12731 instructions:u: 7fac71e27938 _dl_name_match_p+0x68 (/lib/x86_64-linux-gnu/ld-2.28.so) ... After: $ perf script --itrace=i10us ls 13812 [003] 2167315.222583: 3270 instructions:u: 7fac71e2e494 __GI___tunables_init+0xf4 (/lib/x86_64-linux-gnu/ld-2.28.so) ls 13812 [003] 2167315.222667: 30902 instructions:u: 7fac71e2da0f _dl_cache_libcmp+0x2f (/lib/x86_64-linux-gnu/ld-2.28.so) ls 13812 [003] 2167315.222728: 16479 instructions:u: 7fac71e2477a _dl_map_object_deps+0x1ba (/lib/x86_64-linux-gnu/ld-2.28.so) ... Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Fixes: f4aa081949e7b ("perf tools: Add Intel PT decoder") Link: http://lkml.kernel.org/r/20190510124143.27054-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16perf regs x86: Add X86 specific arch__intr_reg_mask()Kan Liang2-0/+29
XMM registers can be collected on Icelake and later platforms. Add specific arch__intr_reg_mask(), which creating an event to check if the kernel and hardware can collect XMM registers. Test on Skylake which doesn't support XMM registers collection. There is nothing changed. #perf record -I? available registers: AX BX CX DX SI DI BP SP IP FLAGS CS SS R8 R9 R10 R11 R12 R13 R14 R15 Usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -I, --intr-regs[=<any register>] sample selected machine registers on interrupt, use '-I?' to list register names #perf record -I [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.905 MB perf.data (2520 samples) ] #perf evlist -v cycles: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|CPU|PERIOD|REGS_INTR, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, task: 1, precise_ip: 3, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1, sample_regs_intr: 0xff0fff Test on Icelake which support XMM registers collection. #perf record -I? available registers: AX BX CX DX SI DI BP SP IP FLAGS CS SS R8 R9 R10 R11 R12 R13 R14 R15 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 XMM9 XMM10 XMM11 XMM12 XMM13 XMM14 XMM15 Usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -I, --intr-regs[=<any register>] sample selected machine registers on interrupt, use '-I?' to list register names #perf record -I [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.800 MB perf.data (318 samples) ] #perf evlist -v cycles: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|CPU|PERIOD|REGS_INTR, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, task: 1, precise_ip: 3, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1, sample_regs_intr: 0xffffffff00ff0fff Committer notes: Don't set attr.sample_period as a named struct init, as it is part of an unnamed union in 'struct perf_event_attr', and doing so breaks the build on older gcc versions, such as: gcc version 4.1.2 20080704 (Red Hat 4.1.2-55) gcc version 4.4.7 20120313 (Red Hat 4.4.7-23) (GCC) arch/x86/util/perf_regs.c: In function 'arch__intr_reg_mask': arch/x86/util/perf_regs.c:279: error: unknown field 'sample_period' specified in initializer cc1: warnings being treated as errors arch/x86/util/perf_regs.c:279: warning: missing braces around initializer arch/x86/util/perf_regs.c:279: warning: (near initialization for 'attr.<anonymous>') Signed-off-by: Kan Liang <kan.liang@linux.intel.com> [ Only on a lenovo t480s, a skylake machine, where the XMM registers didn't show up in -I?/--user-regs=? as expected ] Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/1557865174-56264-3-git-send-email-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16perf parse-regs: Add generic support for arch__intr/user_reg_mask()Kan Liang3-3/+22
There may be different register mask for use with intr or user on some platforms, e.g. Icelake. Add weak functions arch__intr_reg_mask() and arch__user_reg_mask() to return intr and user register mask respectively. Check mask before printing or comparing the register name. Generic code always return PERF_REGS_MASK. No functional change. Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Tested-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/1557865174-56264-2-git-send-email-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16Merge tag 'libnvdimm-fixes-5.2-rc1' of ↵Linus Torvalds6-0/+33
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm updates from Dan Williams: "Just a small collection of fixes this time around. The new virtio-pmem driver is nearly ready, but some last minute device-mapper acks and virtio questions made it prudent to await v5.3. Other major topics that were brewing on the linux-nvdimm mailing list like sub-section hotplug, and other devm_memremap_pages() reworks will go upstream through Andrew's tree. Summary: - Fix a long standing namespace label corruption scenario when re-provisioning capacity for a namespace. - Restore the ability of the dax_pmem module to be built-in. - Harden the build for the 'nfit_test' unit test modules so that the userspace test harness can ensure all required test modules are available" * tag 'libnvdimm-fixes-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: drivers/dax: Allow to include DEV_DAX_PMEM as builtin libnvdimm/namespace: Fix label tracking error tools/testing/nvdimm: add watermarks for dax_pmem* modules dax/pmem: Fix whitespace in dax_pmem
2019-05-16Merge tag 'ktest-v5.2' of ↵Linus Torvalds2-47/+62
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest Pull more ktest updates from Steven Rostedt: - Add support for grub2bls boot loader - Show name and test iteration number in error message sent in mail - Minor fixes and clean ups * tag 'ktest-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest: ktest: update sample.conf for grub2bls ktest: remove get_grub2_index ktest: pass KERNEL_VERSION to POST_KTEST ktest: introduce grub2bls REBOOT_TYPE option ktest: cleanup get_grub_index ktest: introduce _get_grub_index
2019-05-16Merge tag 'trace-v5.2' of ↵Linus Torvalds5-28/+139
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing updates from Steven Rostedt: "The major changes in this tracing update includes: - Removal of non-DYNAMIC_FTRACE from 32bit x86 - Removal of mcount support from x86 - Emulating a call from int3 on x86_64, fixes live kernel patching - Consolidated Tracing Error logs file Minor updates: - Removal of klp_check_compiler_support() - kdb ftrace dumping output changes - Accessing and creating ftrace instances from inside the kernel - Clean up of #define if macro - Introduction of TRACE_EVENT_NOP() to disable trace events based on config options And other minor fixes and clean ups" * tag 'trace-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (44 commits) x86: Hide the int3_emulate_call/jmp functions from UML livepatch: Remove klp_check_compiler_support() ftrace/x86: Remove mcount support ftrace/x86_32: Remove support for non DYNAMIC_FTRACE tracing: Simplify "if" macro code tracing: Fix documentation about disabling options using trace_options tracing: Replace kzalloc with kcalloc tracing: Fix partial reading of trace event's id file tracing: Allow RCU to run between postponed startup tests tracing: Fix white space issues in parse_pred() function tracing: Eliminate const char[] auto variables ring-buffer: Fix mispelling of Calculate tracing: probeevent: Fix to make the type of $comm string tracing: probeevent: Do not accumulate on ret variable tracing: uprobes: Re-enable $comm support for uprobe events ftrace/x86_64: Emulate call function while updating in breakpoint handler x86_64: Allow breakpoints to emulate call instructions x86_64: Add gap to int3 to allow for call emulation tracing: kdb: Allow ftdump to skip all but the last few entries tracing: Add trace_total_entries() / trace_total_entries_cpu() ...
2019-05-15perf parse-regs: Split parse_regsKan Liang4-7/+22
The available registers for --int-regs and --user-regs may be different, e.g. XMM registers. Split parse_regs into two dedicated functions for --int-regs and --user-regs respectively. Modify the warning message. "--user-regs=?" should be applied to show the available registers for --user-regs. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Tested-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/1557865174-56264-1-git-send-email-kan.liang@linux.intel.com [ Changed docs as suggested by Ravi and agreed by Kan ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15perf vendor events arm64: Add Cortex-A57 and Cortex-A72 eventsFlorian Fainelli2-0/+181
The Cortex-A57 and Cortex-A72 both support all ARMv8 recommended events up to the RC_ST_SPEC (0x91) event with the exception of: - L1D_CACHE_REFILL_INNER (0x44) - L1D_CACHE_REFILL_OUTER (0x45) - L1D_TLB_RD (0x4E) - L1D_TLB_WR (0x4F) - L2D_TLB_REFILL_RD (0x5C) - L2D_TLB_REFILL_WR (0x5D) - L2D_TLB_RD (0x5E) - L2D_TLB_WR (0x5F) - STREX_SPEC (0x6F) Create an appropriate JSON file for mapping those events and update the mapfile.csv for matching the Cortex-A57 and Cortex-A72 MIDR to that file. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: John Garry <john.garry@huawei.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sean V Kelley <seanvk.dev@oregontracks.org> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-arm-kernel@lists.infradead.org (moderated list:arm pmu profiling and debugging) Link: http://lkml.kernel.org/r/20190513202522.9050-4-f.fainelli@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15perf vendor events arm64: Map Brahma-B53 CPUID to cortex-a53 eventsFlorian Fainelli1-0/+1
Broadcom's Brahma-B53 CPUs support the same type of events that the Cortex-A53 supports, recognize its CPUID and map it to the cortex-a53 events. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Will Deacon <will.deacon@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sean V Kelley <seanvk.dev@oregontracks.org> Cc: bcm-kernel-feedback-list@broadcom.com Cc: linux-arm-kernel@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org (moderated list Link: http://lkml.kernel.org/r/20190513202522.9050-3-f.fainelli@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15perf vendor events arm64: Remove [[:xdigit:]] wildcardFlorian Fainelli1-1/+1
ARM64's implementation of get_cpuidr_str() masks out the revision bits [3:0] while reading the CPU identifier, there is no need for the [[:xdigit:]] wildcard. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sean V Kelley <seanvk.dev@oregontracks.org> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-arm-kernel@lists.infradead.org (moderated list:arm pmu profiling and debugging) Link: http://lkml.kernel.org/r/20190513202522.9050-2-f.fainelli@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15perf jevents: Remove unused variableZenghui Yu1-1/+0
Address gcc warning: pmu-events/jevents.c: In function ‘save_arch_std_events’: pmu-events/jevents.c:417:15: warning: unused variable ‘sb’ [-Wunused-variable] struct stat *sb = data; ^~ Signed-off-by: Zenghui Yu <yuzenghui@huawei.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: wanghaibin.wang@huawei.com Link: http://lkml.kernel.org/r/1557919169-23972-1-git-send-email-yuzenghui@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15perf test zstd: Fixup verbose mode outputArnaldo Carvalho de Melo1-5/+4
The shell tests should not redirect useful output to /dev/null, as that is done automatically by 'perf test' in non verbose mode, so remove that from the zstd comp/decomp test, fixing up verbose mode. Before: $ perf test zstd 68: Zstd perf.data compression/decompression : Ok $ perf test -v zstd 68: Zstd perf.data compression/decompression : --- start --- test child forked, pid 11956 -z, --compression-level[=<n>] Collecting compressed record file: Checking compressed events stats: test child finished with 0 ---- end ---- Zstd perf.data compression/decompression: Ok $ Now: $ perf test zstd 68: Zstd perf.data compression/decompression : Ok $ perf test -v zstd 68: Zstd perf.data compression/decompression : --- start --- test child forked, pid 12695 Collecting compressed record file: 0+500 records in 72+1 records out 37361 bytes (37 kB, 36 KiB) copied, 9.83796 s, 3.8 kB/s [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.001 MB /tmp/perf.data.rzq, compressed (original 0.004 MB, ratio is 3.679) ] Checking compressed events stats: # compressed : Zstd, level = 1, ratio = 4 COMPRESSED events: 3 test child finished with 0 ---- end ---- Zstd perf.data compression/decompression: Ok $ Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lkml.kernel.org/n/tip-tp96618ds42zic94nlh0msz3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15perf tests: Implement Zstd comp/decomp integration testAlexey Budankov1-0/+35
Introduce a basic integration test for Zstd based record compression/decompression using 'perf record' and 'perf report'. Committer notes: Reduce a bit the freq (from 25 kHz to 5 kHz) and the number of /dev/null records read (from 1000 to 500), reducing the time it takes to something more in line with the time existing 'perf test' entries take to run. With that in place: $ time perf test zstd 68: Zstd perf.data compression/decompression : Ok real 0m10.376s user 0m0.105s sys 0m0.440s $ grep "model name" /proc/cpuinfo | head -1 model name : Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz $ Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/dc007ae4-104a-2b7c-316e-275929025f0d@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15perf inject: Enable COMPRESSED record decompressionAlexey Budankov1-0/+4
Initialized decompression part of Zstd based API so COMPRESSED records would be decompressed into the resulting output data file. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/c27d7500-ecdd-3569-cab5-8f70bbed5ea4@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15perf report: Implement perf.data record decompressionAlexey Budankov5-2/+181
zstd_init(, comp_level = 0) initializes decompression part of API only hat now consists of zstd_decompress_stream() function. The perf.data PERF_RECORD_COMPRESSED records are decompressed using zstd_decompress_stream() function into a linked list of mmaped memory regions of mmap_comp_len size (struct decomp). After decompression of one COMPRESSED record its content is iterated and fetched for usual processing. The mmaped memory regions with decompressed events are kept in the linked list till the tool process termination. When dumping raw records (e.g., perf report -D --header) file offsets of events from compressed records are printed as zero. Committer notes: Since now we have support for processing PERF_RECORD_COMPRESSED, we see none, in raw form, like we saw in the previous patch commiter notes, they were decompressed into the usual PERF_RECORD_{FORK,MMAP,COMM,etc} records, we only see the stats for those PERF_RECORD_COMPRESSED events, and since I used the file generated in the commiter notes for the previous patch, there they are, 2 compressed records: $ perf report --header-only | grep cmdline # cmdline : /home/acme/bin/perf record -z2 sleep 1 $ perf report -D | grep COMPRESS COMPRESSED events: 2 COMPRESSED events: 0 $ perf report --stdio # To display the perf.data header info, please use --header/--header-only options. # # # Total Lost Samples: 0 # # Samples: 15 of event 'cycles:u' # Event count (approx.): 962227 # # Overhead Command Shared Object Symbol # ........ ....... ................ ........................... # 46.99% sleep libc-2.28.so [.] _dl_addr 29.24% sleep [unknown] [k] 0xffffffffaea00a67 16.45% sleep libc-2.28.so [.] __GI__IO_un_link.part.1 5.92% sleep ld-2.28.so [.] _dl_setup_hash 1.40% sleep libc-2.28.so [.] __nanosleep 0.00% sleep [unknown] [k] 0xffffffffaea00163 # # (Tip: To see callchains in a more compact form: perf report -g folded) # $ Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/304b0a59-942c-3fe1-da02-aa749f87108b@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15perf record: Implement -z,--compression_level[=<n>] optionAlexey Budankov2-0/+35
Implemented -z,--compression_level[=<n>] option that enables compression of mmaped kernel data buffers content in runtime during perf record mode collection. Default option value is 1 (fastest compression). Compression overhead has been measured for serial and AIO streaming when profiling matrix multiplication workload: ------------------------------------------------------------- | SERIAL | AIO-1 | ----------------------------------------------------------------| |-z | OVH(x) | ratio(x) size(MiB) | OVH(x) | ratio(x) size(MiB) | |---------------------------------------------------------------| | 0 | 1,00 | 1,000 179,424 | 1,00 | 1,000 187,527 | | 1 | 1,04 | 8,427 181,148 | 1,01 | 8,474 188,562 | | 2 | 1,07 | 8,055 186,953 | 1,03 | 7,912 191,773 | | 3 | 1,04 | 8,283 181,908 | 1,03 | 8,220 191,078 | | 5 | 1,09 | 8,101 187,705 | 1,05 | 7,780 190,065 | | 8 | 1,05 | 9,217 179,191 | 1,12 | 6,111 193,024 | ----------------------------------------------------------------- OVH = (Execution time with -z N) / (Execution time with -z 0) ratio - compression ratio size - number of bytes that was compressed size ~= trace size x ratio Committer notes: Testing it I noticed that it failed to disable build id processing when compression is enabled, and as we'd have to uncompress everything to look for the PERF_RECORD_{MMAP,SAMPLE,etc} to figure out which build ids to read from DSOs, we better disable build id processing when compression is enabled, logging with pr_debug() when doing so: Original patch: # perf record -z2 ^C[ perf record: Woken up 1 times to write data ] 0x1746e0 [0x76]: failed to process type: 81 [Invalid argument] [ perf record: Captured and wrote 1.568 MB perf.data, compressed (original 0.452 MB, ratio is 3.995) ] # After auto-disabling build id processing when compression is enabled: $ perf record -z2 sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.001 MB perf.data, compressed (original 0.001 MB, ratio is 2.292) ] $ perf record -v -z2 sleep 1 Compression enabled, disabling build id collection at the end of the session. <SNIP extra -v pr_debug() messages> [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.001 MB perf.data, compressed (original 0.001 MB, ratio is 2.305) ] $ Also, with parts of the patch originally after this one moved to just before this one we get: $ perf record -z2 sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.001 MB perf.data, compressed (original 0.001 MB, ratio is 2.371) ] $ perf report -D | grep COMPRESS 0 0x1b8 [0x155]: PERF_RECORD_COMPRESSED: unhandled! 0 0x30d [0x80]: PERF_RECORD_COMPRESSED: unhandled! COMPRESSED events: 2 COMPRESSED events: 0 $ I.e. when faced with PERF_RECORD_COMPRESSED that we still have no code to process, we just show it as not being handled, skip them and continue, while before we had: $ perf report -D | grep COMPRESS 0x1b8 [0x169]: failed to process type: 81 [Invalid argument] Error: failed to process sample 0 0x1b8 [0x169]: PERF_RECORD_COMPRESSED $ Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/9ff06518-ae63-a908-e44d-5d9e56dd66d9@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15perf report: Add stub processing of compressed events for -DAlexey Budankov2-1/+20
Committer note: Split from a larger patch, this only dumps PERF_RECORD_COMPRESSED as unhandled, so that when we introduce the record part in the next patch, we don't see unhandled events when using 'perf record -D'. Changed it so that we dump the event if the handler is just a stub, i.e. for the case where we don't have ZSTD linked but we're processing a perf.data file generated by a tool with that linked. Also when failing to decompress we can't just dump the uncompressed event and return 0, we have to propagate the error. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/304b0a59-942c-3fe1-da02-aa749f87108b@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15perf record: Implement compression for AIO trace streamingAlexey Budankov3-113/+89
Compression is implemented using the functions from zstd.c. As the memory to operate on the compression uses mmap->aio.data[] buffers. If Zstd streaming compression API fails for some reason the data to be compressed are just copied into the memory buffers using plain memcpy(). Compressed trace frame consists of an array of PERF_RECORD_COMPRESSED records. Each element of the array is not longer that PERF_SAMPLE_MAX_SIZE and consists of perf_event_header followed by the compressed chunk that is decompressed on the loading stage. perf_mmap__aio_push() is replaced by perf_mmap__push() which is now used in the both serial and AIO streaming cases. perf_mmap__push() is extended with positive return values to signify absence of data ready for processing. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/77db2b2c-5d03-dbb0-aeac-c4dd92129ab9@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15perf record: Implement compression for serial trace streamingAlexey Budankov2-2/+51
Compression is implemented using the functions from zstd.c. As the memory to operate on the compression uses mmap->data buffer. If Zstd streaming compression API fails for some reason the data to be compressed are just copied into the memory buffers using plain memcpy(). Compressed trace frame consists of an array of PERF_RECORD_COMPRESSED records. Each element of the array is not longer that PERF_SAMPLE_MAX_SIZE and consists of perf_event_header followed by the compressed chunk that is decompressed on the loading stage. Comitter notes: Undo some unnecessary line breaks, remove some unnecessary () around zstd_data to then just get its address, and fix conflicts with BPF_PROG_INFO/BPF_BTF patchkits. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/744df43f-3932-2594-ddef-1e99a3cad03a@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15perf tools: Introduce Zstd streaming based compression APIAlexey Budankov3-0/+114
Implemented functions are based on Zstd streaming compression API. The functions are used in runtime to compress data that come from mmaped kernel buffer. zstd_init(), zstd_fini() are used for initialization and finalization to allocate and deallocate internal zstd objects. zstd_compress_stream_to_records() is used to convert parts of mmaped kernel buffer into an array of PERF_RECORD_COMPRESSED records. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/18bf36f3-b85a-1fe2-dd83-10e0c6069568@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15perf mmap: Implement dedicated memory buffer for data compressionAlexey Budankov5-8/+44
Implemented mmap data buffer that is used as the memory to operate on when compressing data in case of serial trace streaming. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/49b31321-0f70-392b-9a4f-649d3affe090@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15perf record: Implement COMPRESSED event record and its attributesAlexey Budankov8-0/+105
Implemented PERF_RECORD_COMPRESSED event, related data types, header feature and functions to write, read and print feature attributes from the trace header section. comp_mmap_len preserves the size of mmaped kernel buffer that was used during collection. comp_mmap_len size is used on loading stage as the size of decomp buffer for decompression of COMPRESSED events content. Committer notes: Fixed up conflict with BPF_PROG_INFO and BTF_BTF header features. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/ebbaf031-8dda-3864-ebc6-7922d43ee515@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15perf session: Define 'bytes_transferred' and 'bytes_compressed' metricsAlexey Budankov3-1/+16
Define 'bytes_transferred' and 'bytes_compressed' metrics to calculate ratio in the end of the data collection: compression ratio = bytes_transferred / bytes_compressed The 'bytes_transferred' metric accumulates the amount of bytes that was extracted from the mmaped kernel buffers for compression, while 'bytes_compressed' accumulates the amount of bytes that was received after applying compression. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1d4bf499-cb03-26dc-6fc6-f14fec7622ce@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15perf build tests: Add NO_LIBZSTD=1 to make_minimalArnaldo Carvalho de Melo1-1/+1
So that we can test the ifdef parts for this feature. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lkml.kernel.org/n/tip-7o65mfl10wlvm8v3f0ombxd1@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15tools lib traceevent: Man pages for trace sequences APIsTzvetomir Stoyanov1-0/+158
Create man pages for trace sequences libtraceevent APIs: trace_seq_init(), trace_seq_destroy(), trace_seq_reset(), trace_seq_terminate(), trace_seq_putc(), trace_seq_puts(), trace_seq_printf(), trace_seq_vprintf(), trace_seq_do_fprintf(), trace_seq_do_printf() Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linux-trace-devel@vger.kernel.org Link: http://lore.kernel.org/linux-trace-devel/20190503091119.23399-27-tstoyanov@vmware.com Link: http://lkml.kernel.org/r/20190510200110.462646052@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15tools lib traceevent: Man pages for APIs used to extract common fields from ↵Tzvetomir Stoyanov1-0/+137
a record Create man pages for libtraceevent APIs: tep_data_type(), tep_data_pid(), tep_data_preempt_count(), tep_data_flags() Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linux-trace-devel@vger.kernel.org Link: http://lore.kernel.org/linux-trace-devel/20190503091119.23399-26-tstoyanov@vmware.com Link: http://lkml.kernel.org/r/20190510200110.284281830@goodmis.org [ Fixed missing T in description of NOSUPPORT flag ] Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15tools lib traceevent: Man page for tep_parse_header_page()Tzvetomir Stoyanov1-0/+82
Create man page for tep_parse_header_page() libtraceevent API. Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linux-trace-devel@vger.kernel.org Link: http://lore.kernel.org/linux-trace-devel/20190503091119.23399-25-tstoyanov@vmware.com Link: http://lkml.kernel.org/r/20190510200110.093108279@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15tools lib traceevent: Man pages for parse event APIsTzvetomir Stoyanov1-0/+90
Create man pages for libtraceevent APIs: tep_parse_event(), tep_parse_format() Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linux-trace-devel@vger.kernel.org Link: http://lore.kernel.org/linux-trace-devel/20190503091119.23399-24-tstoyanov@vmware.com Link: http://lkml.kernel.org/r/20190510200109.847820380@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15tools lib traceevent: Man pages for event filter APIsTzvetomir Stoyanov1-0/+209
Added new man pages, describing libtraceevent event filter APIs: tep_filter_alloc() tep_filter_free() tep_filter_reset() tep_filter_add_filter_str() tep_filter_strerror() tep_event_filtered() tep_filter_remove_event() tep_filter_match() tep_filter_copy() tep_filter_compare() tep_filter_make_string() Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linux-trace-devel@vger.kernel.org Link: http://lore.kernel.org/linux-trace-devel/20190503091119.23399-23-tstoyanov@vmware.com Link: http://lkml.kernel.org/r/20190510200109.638838141@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15tools lib traceevent: Man pages for event fields APIsTzvetomir Stoyanov1-0/+105
Create man pages for libtraceevent APIs: tep_event_common_fields(), tep_event_fields() Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linux-trace-devel@vger.kernel.org Link: http://lore.kernel.org/linux-trace-devel/20190503091119.23399-22-tstoyanov@vmware.com Link: http://lkml.kernel.org/r/20190510200109.421670142@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15tools lib traceevent: Man page for tep_read_number_field()Tzvetomir Stoyanov1-0/+81
Create man page for libtraceevent API tep_read_number_field(). Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linux-trace-devel@vger.kernel.org Link: http://lore.kernel.org/linux-trace-devel/20190503091119.23399-21-tstoyanov@vmware.com Link: http://lkml.kernel.org/r/20190510200109.219394901@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15tools lib traceevent: Man pages for print field APIsTzvetomir Stoyanov1-0/+126
Create man pages for libtraceevent APIs: tep_print_field(), tep_print_fields(), tep_print_num_field(), tep_print_func_field() Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linux-trace-devel@vger.kernel.org Link: http://lore.kernel.org/linux-trace-devel/20190503091119.23399-20-tstoyanov@vmware.com Link: http://lkml.kernel.org/r/20190510200109.054708419@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15tools lib traceevent: Man pages for get field value APIsTzvetomir Stoyanov1-0/+122
Create man pages for libtraceevent APIs: tep_get_any_field_val(), tep_get_common_field_val(), tep_get_field_val(), tep_get_field_raw() Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linux-trace-devel@vger.kernel.org Link: http://lore.kernel.org/linux-trace-devel/20190503091119.23399-19-tstoyanov@vmware.com Link: http://lkml.kernel.org/r/20190510200108.885426878@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15tools lib traceevent: Man pages for find field APIsTzvetomir Stoyanov1-0/+118
Create man pages for libtraceevent APIs: tep_find_common_field(), tep_find_field() tep_find_any_field() Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linux-trace-devel@vger.kernel.org Link: http://lore.kernel.org/linux-trace-devel/20190503091119.23399-18-tstoyanov@vmware.com Link: http://lkml.kernel.org/r/20190510200108.721589427@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15tools lib traceevent: Man pages for libtraceevent event get APIsTzvetomir Stoyanov1-0/+99
Create man pages for libtraceevent APIs: tep_get_event(), tep_get_first_event(), tep_get_events_count() Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linux-trace-devel@vger.kernel.org Link: http://lore.kernel.org/linux-trace-devel/20190503091119.23399-17-tstoyanov@vmware.com Link: http://lkml.kernel.org/r/20190510200108.561088129@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15tools lib traceevent: Man page for list events APIsTzvetomir Stoyanov1-0/+122
Create man page for libtraceevent APIs: tep_list_events() tep_list_events_copy() Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linux-trace-devel@vger.kernel.org Link: http://lore.kernel.org/linux-trace-devel/20190503091119.23399-16-tstoyanov@vmware.com Link: http://lkml.kernel.org/r/20190510200108.367633707@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-15tools lib traceevent: Man pages for event find APIsTzvetomir Stoyanov1-0/+103
Create man pages for libtraceevent APIs: tep_find_event() tep_find_event_by_name() tep_find_event_by_record() Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linux-trace-devel@vger.kernel.org Link: http://lore.kernel.org/linux-trace-devel/20190503091119.23399-15-tstoyanov@vmware.com Link: http://lkml.kernel.org/r/20190510200108.197407057@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-06 10:25:53 +0300