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2019-06-05perf scripts python: export-to-sqlite.py: Export IPC informationAdrian Hunter
Export cycle and instruction counts on samples and calls tables. Committer testing: First runs some workload collecting intel_pt with the 'cyc' ter just for userspace: [root@quaco adrian.hunter]# perf record -o simple-retpoline.perf.data -e intel_pt/cyc/u ./simple-retpoline [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.035 MB simple-retpoline.perf.data ] [root@quaco adrian.hunter]# Then use the export-to-sqlite.py script to see if the changes in this cset don't make it to break and if the changes in the db schema are the ones expected: [root@quaco adrian.hunter]# perf script -i simple-retpoline.perf.data --itrace=be -s ~acme/libexec/perf-core/scripts/python/export-to-sqlite.py simple-retpoline.db branches calls 2019-05-31 11:50:46.942710 Creating database ... 2019-05-31 11:50:46.949663 Writing records... 2019-05-31 11:50:47.224033 Adding indexes 2019-05-31 11:50:47.231599 Done [root@quaco adrian.hunter]# Now lets use the db: [root@quaco adrian.hunter]# sqlite3 simple-retpoline.db SQLite version 3.26.0 2018-12-01 12:34:55 Enter ".help" for usage hints. sqlite> .schema samples CREATE TABLE samples (id integer NOT NULL PRIMARY KEY,evsel_id bigint,machine_id bigint,thread_id bigint,comm_id bigint,dso_id bigint,symbol_id bigint,sym_offset bigint,ip bigint,time bigint,cpuinteger,to_dso_id bigint,to_symbol_id bigint,to_sym_offset bigint,to_ip bigint,branch_type integer,in_tx boolean,call_path_id bigint,insn_count bigint,cyc_count bigint); sqlite> Cool, the 'insn_count' and 'cyc_count' are there, now lets see if we can use them in a query: sqlite> select insn_count,cyc_count from samples where cyc_count > 1500 and insn_count < 10; 6|1507 sqlite> select insn_count,cyc_count from samples where cyc_count > 1500; 118|2210 140|1516 3783|1861 132|1521 6|1507 sqlite> Seems to work :-) Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190520113728.14389-17-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-05perf db-export: Export IPC informationAdrian Hunter
Export cycle and instruction counts on samples and call-returns. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190520113728.14389-16-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-05perf db-export: Add brief documentationAdrian Hunter
Add brief documentation to explain how the database export maintains backward and forward compatibility. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190520113728.14389-15-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-05perf thread-stack: Accumulate IPC informationAdrian Hunter
Cycle and instruction counts are added to the stack. The IPC of a function and all functions it calls, is also recorded. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190520113728.14389-14-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-05perf intel-pt: Document IPC usageAdrian Hunter
Add brief documentation about instructions-per-cycle (IPC) information derived from Intel PT. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190520113728.14389-13-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-05perf intel-pt: Accumulate cycle count from TSC/TMA/MTC packetsAdrian Hunter
When CYC packets are not available, it is still possible to count cycles using TSC/TMA/MTC timestamps. As the timestamp increments in TSC ticks, convert to CPU cycles using the current core-to-bus ratio. Do not accumulate cycles when control flow packet generation is not enabled, nor when time has been "lost", typically due to mwait, which is indicated by a TSC/TMA packet that is not part of PSB+. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190520113728.14389-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-05perf intel-pt: Re-factor TIP cases in intel_pt_walk_to_ipAdrian Hunter
To make it easier to add new code for different TIP cases, separate each case. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190520113728.14389-11-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-05perf intel-pt: Record when decoding PSB+ packetsAdrian Hunter
In preparation for using MTC packets to count cycles, record whether decoding is between a PSB and PSBEND packets. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190520113728.14389-10-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-05perf script: Add output of IPC ratioAdrian Hunter
Add field 'ipc' to display instructions-per-cycle. Example: perf record -e intel_pt/cyc/u ls perf script --insn-trace --xed -F+ipc,-dso,-cpu,-tid ls 2670177.697113434: 7f0dfdbcd090 _start+0x0 mov %rsp, %rdi IPC: 0.00 (1/877) ls 2670177.697113434: 7f0dfdbcd093 _start+0x3 callq 0x7f0dfdbce030 ls 2670177.697113434: 7f0dfdbce030 _dl_start+0x0 pushq %rbp ls 2670177.697113434: 7f0dfdbce031 _dl_start+0x1 mov %rsp, %rbp ls 2670177.697113434: 7f0dfdbce034 _dl_start+0x4 pushq %r15 ls 2670177.697113434: 7f0dfdbce036 _dl_start+0x6 pushq %r14 ls 2670177.697113434: 7f0dfdbce038 _dl_start+0x8 pushq %r13 ls 2670177.697113434: 7f0dfdbce03a _dl_start+0xa pushq %r12 ls 2670177.697113434: 7f0dfdbce03c _dl_start+0xc mov %rdi, %r12 ls 2670177.697113434: 7f0dfdbce03f _dl_start+0xf pushq %rbx ls 2670177.697113434: 7f0dfdbce040 _dl_start+0x10 sub $0x38, %rsp ls 2670177.697113434: 7f0dfdbce044 _dl_start+0x14 rdtsc ls 2670177.697113434: 7f0dfdbce046 _dl_start+0x16 mov %eax, %eax ls 2670177.697113434: 7f0dfdbce048 _dl_start+0x18 shl $0x20, %rdx ls 2670177.697113434: 7f0dfdbce04c _dl_start+0x1c or %rax, %rdx ls 2670177.697114471: 7f0dfdbce04f _dl_start+0x1f movq 0x27e22(%rip), %rax IPC: 0.00 (15/1685) ls 2670177.697116177: 7f0dfdbce056 _dl_start+0x26 movq %rdx, 0x27683(%rip) IPC: 0.00 (1/881) Note, the IPC values are low due to page faults at the beginning of execution. The additional cycles are due to the time to enter the kernel, not the actual kernel page fault handler. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190520113728.14389-9-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-05perf intel-pt: Add support for samples to contain IPC ratioAdrian Hunter
Copy the incremental instruction count and cycle count onto 'instructions' and 'branches' samples. Because Intel PT does not update the cycle count on every branch or instruction, the incremental values will often be zero. When there are values, they will be the number of instructions and number of cycles since the last update, and thus represent the average IPC since the last IPC value. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190520113728.14389-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-05perf tools: Add IPC information to perf_sampleAdrian Hunter
Add counts of instructions and cycles, in order to represent instructions-per-cycle (IPC). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190520113728.14389-7-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-05perf intel-pt: Accumulate cycle count from CYC packetsAdrian Hunter
In preparation for providing instructions-per-cycle (IPC) information, accumulate cycle count from CYC packets. Although CYC packets are optional (requires config term 'cyc' to enable cycle-accurate mode when recording), the simplest way to count cycles is with CYC packets. The first complication is that cycles must be counted only when also counting instructions. That means when control flow packet generation is enabled i.e. between TIP.PGE and TIP.PGD packets. Also, sampling the cycle count follows the same rules as sampling the timestamp, that is, not before the instruction to which the decoder is walking is reached. In addition, the cycle count is not accurate for any but the first branch of a TNT packet. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190520113728.14389-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-05perf intel-pt: Factor out intel_pt_update_sample_timeAdrian Hunter
To eliminate some duplication and make the code more understandable, factor out intel_pt_update_sample_time. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190520113728.14389-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-05perf record: Allow mixing --user-regs with --call-graph=dwarfAlexey Budankov
When DWARF stacks were requested and at the same time that the user specifies a register set using the --user-regs option the full register context was being captured on samples: $ perf record -g --call-graph dwarf,1024 --user-regs=IP,SP,BP -- stack_test2.g.O3 188143843893585 0x6b48 [0x4f8]: PERF_RECORD_SAMPLE(IP, 0x4002): 23828/23828: 0x401236 period: 1363819 addr: 0x7ffedbdd51ac ... FP chain: nr:0 ... user regs: mask 0xff0fff ABI 64-bit .... AX 0x53b .... BX 0x7ffedbdd3cc0 .... CX 0xffffffff .... DX 0x33d3a .... SI 0x7f09b74c38d0 .... DI 0x0 .... BP 0x401260 .... SP 0x7ffedbdd3cc0 .... IP 0x401236 .... FLAGS 0x20a .... CS 0x33 .... SS 0x2b .... R8 0x7f09b74c3800 .... R9 0x7f09b74c2da0 .... R10 0xfffffffffffff3ce .... R11 0x246 .... R12 0x401070 .... R13 0x7ffedbdd5db0 .... R14 0x0 .... R15 0x0 ... ustack: size 1024, offset 0xe0 . data_src: 0x5080021 ... thread: stack_test2.g.O:23828 ...... dso: /root/abudanko/stacks/stack_test2.g.O3 I.e. the --user-regs=IP,SP,BP was being ignored, being overridden by the needs of --call-graph=dwarf. After applying the change in this patch the sample data contains the user specified register, but making sure that at least the minimal set of register needed for DWARF unwinding (DWARF_MINIMAL_REGS) is requested. The user is warned that DWARF unwinding may not work if extra registers end up being needed. -g call-graph dwarf,K full_regs --user-regs=user_regs user_regs -g call-graph dwarf,K --user-regs=user_regs user_regs + DWARF_MINIMAL_REGS $ perf record -g --call-graph dwarf,1024 --user-regs=BP -- ls WARNING: The use of --call-graph=dwarf may require all the user registers, specifying a subset with --user-regs may render DWARF unwinding unreliable, so the minimal registers set (IP, SP) is explicitly forced. arch COPYING Documentation include Kbuild lbuild MAINTAINERS modules.builtin Module.symvers perf.data.old scripts System.map virt block CREDITS drivers init Kconfig lib Makefile modules.builtin.modinfo net README security tools vmlinux certs crypto fs ipc kernel LICENSES mm modules.order perf.data samples sound usr vmlinux.o [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.030 MB perf.data (10 samples) ] 188368474305373 0x5e40 [0x470]: PERF_RECORD_SAMPLE(IP, 0x4002): 23839/23839: 0x401236 period: 1260507 addr: 0x7ffd3d85e96c ... FP chain: nr:0 ... user regs: mask 0x1c0 ABI 64-bit .... BP 0x401260 .... SP 0x7ffd3d85cc20 .... IP 0x401236 ... ustack: size 1024, offset 0x58 . data_src: 0x5080021 Committer notes: Detected build failures on arches where PERF_REGS_ is not available, such as debian:experimental-x-{mips,mips64,mipsel}, fedora 24 and 30 for ARC uClibc and glibc, reported to Alexey that provided a patch moving the DWARF_MINIMAL_REGS from evsel.c to util/perf_regs.h, where it is guarded by an HAVE_PERF_REGS_SUPPORT ifdef. Committer testing: # perf record --user-regs=bp,ax -a sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 1.955 MB perf.data (1773 samples) ] # perf script -F+uregs | grep AX: | head -5 perf 1719 [000] 181.272398: 1 cycles: ffffffffba06a7c4 native_write_msr+0x4 (/lib/modules/5.2.0-rc1+/build/vmlinux) ABI:2 AX:0xffffffffffffffda BP:0x7ffef828fb00 perf 1719 [000] 181.272402: 1 cycles: ffffffffba06a7c4 native_write_msr+0x4 (/lib/modules/5.2.0-rc1+/build/vmlinux) ABI:2 AX:0xffffffffffffffda BP:0x7ffef828fb00 perf 1719 [000] 181.272403: 8 cycles: ffffffffba06a7c4 native_write_msr+0x4 (/lib/modules/5.2.0-rc1+/build/vmlinux) ABI:2 AX:0xffffffffffffffda BP:0x7ffef828fb00 perf 1719 [000] 181.272405: 181 cycles: ffffffffba06a7c6 native_write_msr+0x6 (/lib/modules/5.2.0-rc1+/build/vmlinux) ABI:2 AX:0xffffffffffffffda BP:0x7ffef828fb00 perf 1719 [000] 181.272406: 4405 cycles: ffffffffba06a7c4 native_write_msr+0x4 (/lib/modules/5.2.0-rc1+/build/vmlinux) ABI:2 AX:0xffffffffffffffda BP:0x7ffef828fb00 # perf record --call-graph=dwarf --user-regs=bp,ax -a sleep 1 WARNING: The use of --call-graph=dwarf may require all the user registers, specifying a subset with --user-regs may render DWARF unwinding unreliable, so the minimal registers set (IP, SP) is explicitly forced. [ perf record: Woken up 55 times to write data ] [ perf record: Captured and wrote 24.184 MB perf.data (2841 samples) ] [root@quaco ~]# perf script --hide-call-graph -F+uregs | grep AX: | head -5 perf 1729 [000] 211.268006: 1 cycles: ffffffffba06a7c4 native_write_msr+0x4 (/lib/modules/5.2.0-rc1+/build/vmlinux) ABI:2 AX:0xffffffffffffffda BP:0x7ffc8679abb0 SP:0x7ffc8679ab78 IP:0x7fa75223a0db perf 1729 [000] 211.268014: 1 cycles: ffffffffba06a7c4 native_write_msr+0x4 (/lib/modules/5.2.0-rc1+/build/vmlinux) ABI:2 AX:0xffffffffffffffda BP:0x7ffc8679abb0 SP:0x7ffc8679ab78 IP:0x7fa75223a0db perf 1729 [000] 211.268017: 5 cycles: ffffffffba06a7c4 native_write_msr+0x4 (/lib/modules/5.2.0-rc1+/build/vmlinux) ABI:2 AX:0xffffffffffffffda BP:0x7ffc8679abb0 SP:0x7ffc8679ab78 IP:0x7fa75223a0db perf 1729 [000] 211.268020: 48 cycles: ffffffffba06a7c6 native_write_msr+0x6 (/lib/modules/5.2.0-rc1+/build/vmlinux) ABI:2 AX:0xffffffffffffffda BP:0x7ffc8679abb0 SP:0x7ffc8679ab78 IP:0x7fa75223a0db perf 1729 [000] 211.268024: 490 cycles: ffffffffba00e471 intel_bts_enable_local+0x21 (/lib/modules/5.2.0-rc1+/build/vmlinux) ABI:2 AX:0xffffffffffffffda BP:0x7ffc8679abb0 SP:0x7ffc8679ab78 IP:0x7fa75223a0db # Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> 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: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/e7fd37b1-af22-0d94-a0dc-5895e803bbfe@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-05perf symbols: Remove unused variable 'err'Leo Yan
Variable 'err' is defined but never used in function symsrc__init(), remove it and directly return -1 at the end of the function. Signed-off-by: Leo Yan <leo.yan@linaro.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190530093801.20510-1-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-05perf data: Document directory format header: HEADER_DIR_FORMATArnaldo Carvalho de Melo
We forgot to update the perf.data file format document for the HEADER_DIR_FORMAT header, do it now from comments in the patch introducing it. 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: Chong Jiang <chongjiang@chromium.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Simon Que <sque@chromium.org> Fixes: 258031c017c3 ("perf header: Add DIR_FORMAT feature to describe directory data") Link: https://lkml.kernel.org/n/tip-jbrzb7ijb5al33gi8br6f9rr@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-05perf data: Document clockid header: HEADER_CLOCKIDArnaldo Carvalho de Melo
We forgot to update the perf.data file format document for the HEADER_CLOCKID header, do it now from comments in the patch introducing it. 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: Chong Jiang <chongjiang@chromium.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Simon Que <sque@chromium.org> Fixes: cf7905165fee ("perf record: Encode -k clockid frequency into Perf trace") Link: https://lkml.kernel.org/n/tip-slhnjp06027j3ae17qqetzxj@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-05perf data: Document memory topology header: HEADER_MEM_TOPOLOGYArnaldo Carvalho de Melo
We forgot to update the perf.data file format document for the HEADER_MEM_TOPOLOGY header, do it now from comments in the patch introducing it. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Chong Jiang <chongjiang@chromium.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Simon Que <sque@chromium.org> Fixes: e2091cedd51b ("perf tools: Add MEM_TOPOLOGY feature to perf data file") Link: https://lkml.kernel.org/n/tip-h5lcm1nbe9ztxwm61gmadd56@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-05perf data: Add description of header HEADER_BPF_PROG_INFO and HEADER_BPF_BTFSong Liu
This patch addes description of HEADER_BPF_PROG_INFO and HEADER_BPF_BTF to perf.data-file-format.txt. Requested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Song Liu <songliubraving@fb.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Fixes: 606f972b1361 ("perf bpf: Save bpf_prog_info information as headers to perf.data") Link: http://lkml.kernel.org/r/20190521064406.2498925-1-songliubraving@fb.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-03Merge tag 'v5.2-rc3' into perf/core, to pick up fixesIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-06-02Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Ingo Molnar: "On the kernel side there's a bunch of ring-buffer ordering fixes for a reproducible bug, plus a PEBS constraints regression fix. Plus tooling fixes" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: tools headers UAPI: Sync kvm.h headers with the kernel sources perf record: Fix s390 missing module symbol and warning for non-root users perf machine: Read also the end of the kernel perf test vmlinux-kallsyms: Ignore aliases to _etext when searching on kallsyms perf session: Add missing swap ops for namespace events perf namespace: Protect reading thread's namespace tools headers UAPI: Sync drm/drm.h with the kernel tools headers UAPI: Sync drm/i915_drm.h with the kernel tools headers UAPI: Sync linux/fs.h with the kernel tools headers UAPI: Sync linux/sched.h with the kernel tools arch x86: Sync asm/cpufeatures.h with the with the kernel tools include UAPI: Update copy of files related to new fspick, fsmount, fsconfig, fsopen, move_mount and open_tree syscalls perf arm64: Fix mksyscalltbl when system kernel headers are ahead of the kernel perf data: Fix 'strncat may truncate' build failure with recent gcc perf/ring-buffer: Use regular variables for nesting perf/ring-buffer: Always use {READ,WRITE}_ONCE() for rb->user_page data perf/ring_buffer: Add ordering to rb->nest increment perf/ring_buffer: Fix exposing a temporarily decreased data_head perf/x86/intel/ds: Fix EVENT vs. UEVENT PEBS constraints
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166Thomas Gleixner
Based on 1 normalized pattern(s): licensed under the terms of the gnu gpl license version 2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 62 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.929121379@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157Thomas Gleixner
Based on 3 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156Thomas Gleixner
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152Thomas Gleixner
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-28perf intel-pt: Rationalize intel_pt_sync_switch()'s use of next_tidAdrian Hunter
Returning 1 from intel_pt_sync_switch() causes the current tid to be set. That negates the need to keep next_tid anymore. Rationalize the code to that effect. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190412113830.4126-9-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf intel-pt: Improve sync_switch by processing PERF_RECORD_SWITCH* in eventsAdrian Hunter
sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. Improve it by processing "context switch in" events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190412113830.4126-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf scripts python: export-to-postgresql.py: Add support for pyside2Adrian Hunter
pyside2 is the future for pyside support. Note pyside use Qt4 whereas pyside2 uses Qt5. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190412113830.4126-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf scripts python: export-to-sqlite.py: Add support for pyside2Adrian Hunter
pyside2 is the future for pyside support. Note pyside use Qt4 whereas pyside2 uses Qt5. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190412113830.4126-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf scripts python: exported-sql-viewer.py: Add support for pyside2Adrian Hunter
pyside2 is the future for pyside support. Note pyside use Qt4 whereas pyside2 uses Qt5. Committer testing: On a system with just: # rpm -qa| grep -i pyside python2-pyside-1.2.4-7.fc29.x86_64 # Running: $ python ~acme/libexec/perf-core/scripts/python/exported-sql-viewer.py ~/c/adrian.hunter/simple-retpoline.db & [1] 7438 Makes it use the pyside 1 files: $ grep -i pyside /proc/7438/maps | cut -d ' ' -f 6- | sort -u /usr/lib64/libpyside-python2.7.so.1.2.4 /usr/lib64/python2.7/site-packages/PySide/QtCore.so /usr/lib64/python2.7/site-packages/PySide/QtGui.so /usr/lib64/python2.7/site-packages/PySide/QtSql.so $ rpm -qf /usr/lib64/libpyside-python2.7.so.1.2.4 python2-pyside-1.2.4-7.fc29.x86_64 $ To get PySide2 I guess one needs to do: $ pip install PySide2 But thats a 142MiB download I can't do right now, perhaps before pushing upstream... Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190412113830.4126-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf scripts python: exported-sql-viewer.py: Use argparse module for ↵Adrian Hunter
argument parsing The argparse module makes it easier to add new arguments. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190412113830.4126-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf scripts python: exported-sql-viewer.py: Change python2 to pythonAdrian Hunter
Now that there is also support for python3, there is no need to specify python2 explicitly. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190412113830.4126-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf top: Lower message level for failure on synthesizing events for ↵Arnaldo Carvalho de Melo
pre-existing BPF programs Move it from being a pr_warning() to a pr_debug(). Also capitalize BPF and explain what gets missing when we're not able to synthesize these events: we'll not be able to resolve symbols, etc. Reported-by: Ingo Molnar <mingo@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexei Starovoitov <ast@fb.com> Cc: Andrii Nakryiko <andrii.nakryiko@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Wang Nan <wangnan0@huawei.com> Cc: Yonghong Song <yhs@fb.com> Link: https://lkml.kernel.org/n/tip-whpnfnw6xtd939odgt9bw9as@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf python: Remove -fstack-protector-strong if clang doesn't have itArnaldo Carvalho de Melo
Some distros put -fstack-protector-strong in the compiler flags to be used to build python extensions, but then, the clang version in that distro doesn't know about that, only gcc does. Check if that is the case and remove it from the set of options used to build the python binding with clang. Case at hand: oraclelinux:7 $ head -2 /etc/os-release NAME="Oracle Linux Server" VERSION="7.6" $ grep stack-protector /usr/lib64/python2.7/_sysconfigdata.py | head -1 | cut -c-120 'CFLAGS': '-fno-strict-aliasing -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --para $ gcc version 4.8.5 20150623 (Red Hat 4.8.5-36.0.1) (GCC) clang version 3.4.2 (tags/RELEASE_34/dot2-final) clang: error: unknown argument: '-fstack-protector-strong' clang: error: unknown argument: '-fstack-protector-strong' error: command 'clang' failed with exit status 1 cp: cannot stat '/tmp/build/perf/python_ext_build/lib/perf*.so': No such file or directory make[2]: *** [/tmp/build/perf/python/perf.so] Error 1 Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-brmp2415zxpbhz45etkgjoma@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf annotate TUI browser: Do not use member from variable within its own ↵Arnaldo Carvalho de Melo
initialization Some compilers will complain when using a member of a struct to initialize another member, in the same struct initialization. For instance: debian:8 Debian clang version 3.5.0-10 (tags/RELEASE_350/final) (based on LLVM 3.5.0) oraclelinux:7 clang version 3.4.2 (tags/RELEASE_34/dot2-final) Produce: ui/browsers/annotate.c:104:12: error: variable 'ops' is uninitialized when used within its own initialization [-Werror,-Wuninitialized] (!ops.current_entry || ^~~ 1 error generated. So use an extra variable, initialized just before that struct, to have the value used in the expressions used to init two of the struct members. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Fixes: c298304bd747 ("perf annotate: Use a ops table for annotation_line__write()") Link: https://lkml.kernel.org/n/tip-f9nexro58q62l3o9hez8hr0i@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf machine: Return NULL instead of null-terminating /proc/version arrayDonald Yandt
Return NULL instead of null-terminating version char array when fgets fails due to end-of-file or error. Signed-off-by: Donald Yandt <donald.yandt@gmail.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yanmin Zhang <yanmin_zhang@linux.intel.com> Fixes: 30ba5b0e66c8 ("perf machine: Null-terminate version char array upon fgets(/proc/version) error") Link: http://lkml.kernel.org/r/20190528134128.30841-1-donald.yandt@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf version: Append 12 git SHA chars to the version stringArnaldo Carvalho de Melo
Bumping it from just 4: Before: $ perf -v perf version 5.2.rc1.g80978f $ After: $ perf -v perf version 5.2.rc1.g80978fc864c5 $ Requested-by: Ingo Molnar <mingo@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-p4yun2nxlo7eeeohyx5v4kw7@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf script: Remove superfluous BPF event titlesJiri Olsa
There's no need to display "ksymbol event with" text for the PERF_RECORD_KSYMBOL event and "bpf event with" test for the PERF_RECORD_BPF_EVENT event. Remove it so it also goes along with other side-band events display. Before: # perf script --show-bpf-events ... swapper 0 [000] 0.000000: PERF_RECORD_KSYMBOL ksymbol event with addr ffffffffc0ef971d len 229 type 1 flags 0x0 name bpf_prog_2a142ef67aaad174 swapper 0 [000] 0.000000: PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 36 After: # perf script --show-bpf-events ... swapper 0 [000] 0.000000: PERF_RECORD_KSYMBOL addr ffffffffc0ef971d len 229 type 1 flags 0x0 name bpf_prog_2a142ef67aaad174 swapper 0 [000] 0.000000: PERF_RECORD_BPF_EVENT type 1, flags 0, id 36 Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@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> Cc: Stanislav Fomichev <sdf@google.com> Link: http://lkml.kernel.org/r/20190508132010.14512-12-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf script: Add --show-bpf-events to show eBPF related eventsJiri Olsa
Add the --show-bpf-events command line option to show the eBPF related events: PERF_RECORD_KSYMBOL PERF_RECORD_BPF_EVENT Usage: # perf record -a ... # perf script --show-bpf-events ... swapper 0 [000] 0.000000: PERF_RECORD_KSYMBOL ksymbol event with addr ffffffffc0ef971d len 229 type 1 flags 0x0 name bpf_prog_2a142ef67aaad174 swapper 0 [000] 0.000000: PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 36 ... Committer testing: # perf script --show-bpf-events | egrep -i 'PERF_RECORD_(BPF|KSY)' 0 PERF_RECORD_KSYMBOL ksymbol event with addr ffffffffc029a6c3 len 229 type 1 flags 0x0 name bpf_prog_7be49e3934a125ba 0 PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 47 0 PERF_RECORD_KSYMBOL ksymbol event with addr ffffffffc029c1ae len 229 type 1 flags 0x0 name bpf_prog_2a142ef67aaad174 0 PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 48 0 PERF_RECORD_KSYMBOL ksymbol event with addr ffffffffc02ddd1c len 229 type 1 flags 0x0 name bpf_prog_7be49e3934a125ba 0 PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 49 0 PERF_RECORD_KSYMBOL ksymbol event with addr ffffffffc02dfc11 len 229 type 1 flags 0x0 name bpf_prog_2a142ef67aaad174 0 PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 50 0 PERF_RECORD_KSYMBOL ksymbol event with addr ffffffffc045da0a len 229 type 1 flags 0x0 name bpf_prog_7be49e3934a125ba 0 PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 51 0 PERF_RECORD_KSYMBOL ksymbol event with addr ffffffffc04ef4b4 len 229 type 1 flags 0x0 name bpf_prog_2a142ef67aaad174 0 PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 52 0 PERF_RECORD_KSYMBOL ksymbol event with addr ffffffffc09e15da len 229 type 1 flags 0x0 name bpf_prog_7be49e3934a125ba 0 PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 53 0 PERF_RECORD_KSYMBOL ksymbol event with addr ffffffffc0d2b1a3 len 229 type 1 flags 0x0 name bpf_prog_2a142ef67aaad174 0 PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 54 0 PERF_RECORD_KSYMBOL ksymbol event with addr ffffffffc0fd9850 len 381 type 1 flags 0x0 name bpf_prog_819967866022f1e1_sys_enter 0 PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 179 0 PERF_RECORD_KSYMBOL ksymbol event with addr ffffffffc0feb1ec len 191 type 1 flags 0x0 name bpf_prog_c1bd85c092d6e4aa_sys_exit 0 PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 180 ^C[root@quaco pt]# perf evlist intel_pt//ku dummy:u # Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@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> Cc: Stanislav Fomichev <sdf@google.com> Link: http://lkml.kernel.org/r/20190508132010.14512-11-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf tests: Add map_groups__merge_in testJiri Olsa
Add map_groups__merge_in test to test the map_groups__merge_in function usage - merging kcore maps into existing eBPF maps. Committer testing: # perf test merge 59: map_groups__merge_in : Ok # perf test -v merge 59: map_groups__merge_in : --- start --- test child forked, pid 8349 test child finished with 0 ---- end ---- map_groups__merge_in: Ok # Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@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> Cc: Stanislav Fomichev <sdf@google.com> Link: http://lkml.kernel.org/r/20190508132010.14512-10-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf script: Pad DSO name for --call-traceJiri Olsa
Pad the DSO name in --call-trace so we don't have the indent screwed by different DSO name lengths, as now for kernel there's also BPF code displayed. # perf-with-kcore record pt -e intel_pt//ku -- sleep 1 # perf-core/perf-with-kcore script pt --call-trace Before: sleep 3660 [16] 57036.806464404: ([kernel.kallsyms]) kretprobe_perf_func sleep 3660 [16] 57036.806464404: ([kernel.kallsyms]) trace_call_bpf sleep 3660 [16] 57036.806464404: ([kernel.kallsyms]) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806464404: ([kernel.kallsyms]) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806464725: (bpf_prog_da4fe6b3d2c29b25_trace_return) bpf_get_current_pid_tgid sleep 3660 [16] 57036.806464725: (bpf_prog_da4fe6b3d2c29b25_trace_return) bpf_ktime_get_ns sleep 3660 [16] 57036.806464725: ([kernel.kallsyms]) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806464725: ([kernel.kallsyms]) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806465045: (bpf_prog_da4fe6b3d2c29b25_trace_return) __htab_map_lookup_elem sleep 3660 [16] 57036.806465366: ([kernel.kallsyms]) memcmp sleep 3660 [16] 57036.806465687: (bpf_prog_da4fe6b3d2c29b25_trace_return) bpf_probe_read sleep 3660 [16] 57036.806465687: ([kernel.kallsyms]) probe_kernel_read sleep 3660 [16] 57036.806465687: ([kernel.kallsyms]) __check_object_size sleep 3660 [16] 57036.806465687: ([kernel.kallsyms]) check_stack_object sleep 3660 [16] 57036.806465687: ([kernel.kallsyms]) copy_user_enhanced_fast_string sleep 3660 [16] 57036.806465687: (bpf_prog_da4fe6b3d2c29b25_trace_return) bpf_probe_read sleep 3660 [16] 57036.806465687: ([kernel.kallsyms]) probe_kernel_read sleep 3660 [16] 57036.806465687: ([kernel.kallsyms]) __check_object_size sleep 3660 [16] 57036.806465687: ([kernel.kallsyms]) check_stack_object sleep 3660 [16] 57036.806465687: ([kernel.kallsyms]) copy_user_enhanced_fast_string sleep 3660 [16] 57036.806466008: (bpf_prog_da4fe6b3d2c29b25_trace_return) bpf_get_current_uid_gid sleep 3660 [16] 57036.806466008: ([kernel.kallsyms]) from_kgid sleep 3660 [16] 57036.806466008: ([kernel.kallsyms]) from_kuid sleep 3660 [16] 57036.806466008: (bpf_prog_da4fe6b3d2c29b25_trace_return) bpf_perf_event_output sleep 3660 [16] 57036.806466328: ([kernel.kallsyms]) perf_event_output sleep 3660 [16] 57036.806466328: ([kernel.kallsyms]) perf_prepare_sample sleep 3660 [16] 57036.806466328: ([kernel.kallsyms]) perf_misc_flags sleep 3660 [16] 57036.806466328: ([kernel.kallsyms]) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806466328: ([kernel.kallsyms]) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806466328: ([kvm]) kvm_is_in_guest sleep 3660 [16] 57036.806466649: ([kernel.kallsyms]) __perf_event_header__init_id.isra.0 sleep 3660 [16] 57036.806466649: ([kernel.kallsyms]) perf_output_begin After: sleep 3660 [16] 57036.806464404: ([kernel.kallsyms] ) kretprobe_perf_func sleep 3660 [16] 57036.806464404: ([kernel.kallsyms] ) trace_call_bpf sleep 3660 [16] 57036.806464404: ([kernel.kallsyms] ) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806464404: ([kernel.kallsyms] ) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806464725: (bpf_prog_da4fe6b3d2c29b25_trace_return ) bpf_get_current_pid_tgid sleep 3660 [16] 57036.806464725: (bpf_prog_da4fe6b3d2c29b25_trace_return ) bpf_ktime_get_ns sleep 3660 [16] 57036.806464725: ([kernel.kallsyms] ) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806464725: ([kernel.kallsyms] ) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806465045: (bpf_prog_da4fe6b3d2c29b25_trace_return ) __htab_map_lookup_elem sleep 3660 [16] 57036.806465366: ([kernel.kallsyms] ) memcmp sleep 3660 [16] 57036.806465687: (bpf_prog_da4fe6b3d2c29b25_trace_return ) bpf_probe_read sleep 3660 [16] 57036.806465687: ([kernel.kallsyms] ) probe_kernel_read sleep 3660 [16] 57036.806465687: ([kernel.kallsyms] ) __check_object_size sleep 3660 [16] 57036.806465687: ([kernel.kallsyms] ) check_stack_object sleep 3660 [16] 57036.806465687: ([kernel.kallsyms] ) copy_user_enhanced_fast_string sleep 3660 [16] 57036.806465687: (bpf_prog_da4fe6b3d2c29b25_trace_return ) bpf_probe_read sleep 3660 [16] 57036.806465687: ([kernel.kallsyms] ) probe_kernel_read sleep 3660 [16] 57036.806465687: ([kernel.kallsyms] ) __check_object_size sleep 3660 [16] 57036.806465687: ([kernel.kallsyms] ) check_stack_object sleep 3660 [16] 57036.806465687: ([kernel.kallsyms] ) copy_user_enhanced_fast_string sleep 3660 [16] 57036.806466008: (bpf_prog_da4fe6b3d2c29b25_trace_return ) bpf_get_current_uid_gid sleep 3660 [16] 57036.806466008: ([kernel.kallsyms] ) from_kgid sleep 3660 [16] 57036.806466008: ([kernel.kallsyms] ) from_kuid sleep 3660 [16] 57036.806466008: (bpf_prog_da4fe6b3d2c29b25_trace_return ) bpf_perf_event_output sleep 3660 [16] 57036.806466328: ([kernel.kallsyms] ) perf_event_output sleep 3660 [16] 57036.806466328: ([kernel.kallsyms] ) perf_prepare_sample sleep 3660 [16] 57036.806466328: ([kernel.kallsyms] ) perf_misc_flags sleep 3660 [16] 57036.806466328: ([kernel.kallsyms] ) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806466328: ([kernel.kallsyms] ) __x86_indirect_thunk_rax Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@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> Cc: Stanislav Fomichev <sdf@google.com> Link: http://lkml.kernel.org/r/20190508132010.14512-8-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf dso: Add BPF DSO read and size hooksJiri Olsa
Add BPF related code into DSO reading paths to return size (bpf_size) and read the BPF code (bpf_read). Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Cc: Adrian Hunter <adrian.hunter@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> Cc: Stanislav Fomichev <sdf@google.com> Link: http://lkml.kernel.org/r/20190508132010.14512-5-jolsa@kernel.org [ Use uintptr_t when casting from u64 to u8 pointers ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf dso: Simplify dso_cache__read functionJiri Olsa
There's no need for the while loop now, also we can connect two (ret > 0) condition legs together. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Cc: Adrian Hunter <adrian.hunter@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> Cc: Song Liu <songliubraving@fb.com> Cc: Stanislav Fomichev <sdf@google.com> Link: http://lkml.kernel.org/r/20190508132010.14512-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf dso: Separate generic code in dso_cache__readJiri Olsa
Move the file specific code in the dso_cache__read function to a separate file_read function. I'll add BPF specific code in the following patches. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Cc: Adrian Hunter <adrian.hunter@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> Cc: Stanislav Fomichev <sdf@google.com> Link: http://lkml.kernel.org/r/20190508132010.14512-3-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf dso: Separate generic code in dso__data_file_size()Jiri Olsa
Moving file specific code in dso__data_file_size function into separate file_size function. I'll add bpf specific code in following patches. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Cc: Adrian Hunter <adrian.hunter@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> Cc: Stanislav Fomichev <sdf@google.com> Link: http://lkml.kernel.org/r/20190508132010.14512-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf tools: Remove const from thread read accessorsNamhyung Kim
The namespaces and comm fields of a thread are protected by rwsem and require write access for it. So it ended up using a cast to remove the const qualifier. Let's get rid of the const then. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Hari Bathini <hbathini@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Krister Johansen <kjlx@templeofstupid.com> Link: http://lkml.kernel.org/r/20190527061149.168640-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf top: Add --namespaces optionNamhyung Kim
Since 'perf record' already have this option, let's have it for 'perf top' as well. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Hari Bathini <hbathini@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Krister Johansen <kjlx@templeofstupid.com> Link: http://lkml.kernel.org/r/20190522053250.207156-4-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf trace: Beautify 'sync_file_range' argumentsArnaldo Carvalho de Melo
Use existing beautifiers for the first arg, fd, assigned using the heuristic that looks for syscall arg names and associates SCA_FD with 'fd' named argumes, and wire up the recently introduced sync_file_range flags table generator. Now it should be possible to just use: perf trace -e sync_file_range As root and see all sync_file_range syscalls with its args beautified. Doing a syscall strace like session looking for this syscall, then run postgresql's initdb command: # perf trace -e sync_file_range <SNIP> initdb/1332 sync_file_range(6</var/lib/pgsql/data/global/1260_fsm>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(6</var/lib/pgsql/data/global/1260_fsm>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(5</var/lib/pgsql/data/global>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(5</var/lib/pgsql/data/global>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(5</var/lib/pgsql/data/global>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(5</var/lib/pgsql/data/global>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(5</var/lib/pgsql/data/global>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(5</var/lib/pgsql/data/global>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(5</var/lib/pgsql/data/global>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(5</var/lib/pgsql/data/global>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(7</var/lib/pgsql/data/base/1/2682>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(6</var/lib/pgsql/data/global/1260_fsm>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(7</var/lib/pgsql/data/base/1/2682>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(6</var/lib/pgsql/data/global/1260_fsm>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(5</var/lib/pgsql/data/global>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(5</var/lib/pgsql/data/global>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(5</var/lib/pgsql/data/global>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(5</var/lib/pgsql/data/global>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(4</var/lib/pgsql/data>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 initdb/1332 sync_file_range(4</var/lib/pgsql/data>, 0, 0, SYNC_FILE_RANGE_WRITE) = 0 ^C # Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Amir Goldstein <amir73il@gmail.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-8tqy34xhpg8gwnaiv74xy93w@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf beauty: Add generator for sync_file_range's 'flags' arg valuesArnaldo Carvalho de Melo
$ tools/perf/trace/beauty/sync_file_range.sh static const char *sync_file_range_flags[] = { [ilog2(1) + 1] = "WAIT_BEFORE", [ilog2(2) + 1] = "WRITE", [ilog2(4) + 1] = "WAIT_AFTER", }; $ When all are the above are present, then we have something called SYNC_FILE_RANGE_WRITE_AND_WAIT, that will be special cased in the upcoming scnprintf beautifier for this flags arg. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Amir Goldstein <amir73il@gmail.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-uf2vd7bc8fkz65j7yit8dh84@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-28perf trace beauty clone: Handle CLONE_PIDFDArnaldo Carvalho de Melo
In addition to the older flags. This will allow something like this to be implemented in 'perf trace" perf trace -e clone/PIDFD in flags/ I.e. ask for strace like tracing, system wide, looking for 'clone' syscalls that have the CLONE_PIDFD bit set in the 'flags' arg. For now we'll just see PIDFD if it is set in the 'flags' arg. Cc: Christian Brauner <christian@brauner.io> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-drq9h7s8gcv8b87064fp6lb0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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