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2019-11-26perf maps: Rename map_groups.h to maps.hArnaldo Carvalho de Melo1-1/+1
One more step in the merge of 'struct maps' with 'struct map_groups'. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-9ibtn3vua76f934t7woyf26w@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26perf thread: Rename thread->mg to thread->mapsArnaldo Carvalho de Melo1-1/+1
One more step on the merge of 'struct maps' with 'struct map_groups'. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-69vcr8pubpym90skxhmbwhiw@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26perf maps: Merge 'struct maps' with 'struct map_groups'Arnaldo Carvalho de Melo1-1/+1
And pick the shortest name: 'struct maps'. The split existed because we used to have two groups of maps, one for functions and one for variables, but that only complicated things, sometimes we needed to figure out what was at some address and then had to first try it on the functions group and if that failed, fall back to the variables one. That split is long gone, so for quite a while we had only one struct maps per struct map_groups, simplify things by combining those structs. First patch is the minimum needed to merge both, follow up patches will rename 'thread->mg' to 'thread->maps', etc. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-hom6639ro7020o708trhxh59@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-07perf report: Support --percent-limit for --total-cyclesJin Yao1-1/+6
We have already supported the '--total-cycles' option in previous patch. It's also useful to show entries only above a threshold percent. This patch enables '--percent-limit' for not showing entries under that percent. For example: perf report --total-cycles --stdio --percent-limit 1 # To display the perf.data header info, please use --header/--header-only options. # # # Total Lost Samples: 0 # # Samples: 2M of event 'cycles' # Event count (approx.): 2753248 # # Sampled Cycles% Sampled Cycles Avg Cycles% Avg Cycles [Program Block Range] Shared Object # ............... .............. ........... .......... ................................................................. .................... # 26.04% 2.8M 0.40% 18 [div.c:42 -> div.c:39] div 15.17% 1.2M 0.16% 7 [random_r.c:357 -> random_r.c:380] libc-2.27.so 5.11% 402.0K 0.04% 2 [div.c:27 -> div.c:28] div 4.87% 381.6K 0.04% 2 [random.c:288 -> random.c:291] libc-2.27.so 4.53% 381.0K 0.04% 2 [div.c:40 -> div.c:40] div 3.85% 300.9K 0.02% 1 [div.c:22 -> div.c:25] div 3.08% 241.1K 0.02% 1 [rand.c:26 -> rand.c:27] libc-2.27.so 3.06% 240.0K 0.02% 1 [random.c:291 -> random.c:291] libc-2.27.so 2.78% 215.7K 0.02% 1 [random.c:298 -> random.c:298] libc-2.27.so 2.52% 198.3K 0.02% 1 [random.c:293 -> random.c:293] libc-2.27.so 2.36% 184.8K 0.02% 1 [rand.c:28 -> rand.c:28] libc-2.27.so 2.33% 180.5K 0.02% 1 [random.c:295 -> random.c:295] libc-2.27.so 2.28% 176.7K 0.02% 1 [random.c:295 -> random.c:295] libc-2.27.so 2.20% 168.8K 0.02% 1 [rand@plt+0 -> rand@plt+0] div 1.98% 158.2K 0.02% 1 [random_r.c:388 -> random_r.c:388] libc-2.27.so 1.57% 123.3K 0.02% 1 [div.c:42 -> div.c:44] div 1.44% 116.0K 0.42% 19 [random_r.c:357 -> random_r.c:394] libc-2.27.so Committer testing: From second exapmple onwards slightly edited for brevity: # perf report --total-cycles --percent-limit 2 --stdio # To display the perf.data header info, please use --header/--header-only options. # # # Total Lost Samples: 0 # # Samples: 6M of event 'cycles' # Event count (approx.): 6299936 # # Sampled Cycles% Sampled Cycles Avg Cycles% Avg Cycles [Program Block Range] Shared Object # ............... .............. ........... .......... ...................................................................... .................... # 2.17% 1.7M 0.08% 607 [compiler.h:199 -> common.c:221] [kernel.vmlinux] # # (Tip: Create an archive with symtabs to analyse on other machine: perf archive) # # perf report --total-cycles --percent-limit 1 --stdio # Sampled Cycles% Sampled Cycles Avg Cycles% Avg Cycles [Program Block Range] Shared Object 2.17% 1.7M 0.08% 607 [compiler.h:199 -> common.c:221] [kernel.vmlinux] 1.75% 1.3M 8.34% 65.5K [memset-vec-unaligned-erms.S:147 -> memset-vec-unaligned-erms.S:151] libc-2.29.so # # perf report --total-cycles --percent-limit 0.7 --stdio # Sampled Cycles% Sampled Cycles Avg Cycles% Avg Cycles [Program Block Range] Shared Object 2.17% 1.7M 0.08% 607 [compiler.h:199 -> common.c:221] [kernel.vmlinux] 1.75% 1.3M 8.34% 65.5K [memset-vec-unaligned-erms.S:147 -> memset-vec-unaligned-erms.S:151] libc-2.29.so 0.72% 544.5K 0.03% 230 [entry_64.S:657 -> entry_64.S:662] [kernel.vmlinux] # ------------------------------------------- It only shows the entries which 'Sampled Cycles%' > 1%. v7: --- No functional change. Only fix the conflict issue because previous patches are changed. v6: --- No functional change. Only fix the conflict issue because previous patches are changed. v5: --- No functional change. Only fix the conflict issue because previous patches are changed. v4: --- No functional change. Only fix the build issue because previous patches are changed. Signed-off-by: Jin Yao <yao.jin@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: Jin Yao <yao.jin@intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191107074719.26139-7-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-07perf report: Sort by sampled cycles percent per block for stdioJin Yao1-0/+22
It would be useful to support sorting for all blocks by the sampled cycles percent per block. This is useful to concentrate on the globally hottest blocks. This patch implements a new option "--total-cycles" which sorts all blocks by 'Sampled Cycles%'. The 'Sampled Cycles%' is the percent: percent = block sampled cycles aggregation / total sampled cycles Note that, this patch only supports "--stdio" mode. For example, # perf record -b ./div # perf report --total-cycles --stdio # To display the perf.data header info, please use --header/--header-only options. # # Total Lost Samples: 0 # # Samples: 2M of event 'cycles' # Event count (approx.): 2753248 # # Sampled Cycles% Sampled Cycles Avg Cycles% Avg Cycles [Program Block Range] Shared Object # ............... .............. ........... .......... ................................................ ................. # 26.04% 2.8M 0.40% 18 [div.c:42 -> div.c:39] div 15.17% 1.2M 0.16% 7 [random_r.c:357 -> random_r.c:380] libc-2.27.so 5.11% 402.0K 0.04% 2 [div.c:27 -> div.c:28] div 4.87% 381.6K 0.04% 2 [random.c:288 -> random.c:291] libc-2.27.so 4.53% 381.0K 0.04% 2 [div.c:40 -> div.c:40] div 3.85% 300.9K 0.02% 1 [div.c:22 -> div.c:25] div 3.08% 241.1K 0.02% 1 [rand.c:26 -> rand.c:27] libc-2.27.so 3.06% 240.0K 0.02% 1 [random.c:291 -> random.c:291] libc-2.27.so 2.78% 215.7K 0.02% 1 [random.c:298 -> random.c:298] libc-2.27.so 2.52% 198.3K 0.02% 1 [random.c:293 -> random.c:293] libc-2.27.so 2.36% 184.8K 0.02% 1 [rand.c:28 -> rand.c:28] libc-2.27.so 2.33% 180.5K 0.02% 1 [random.c:295 -> random.c:295] libc-2.27.so 2.28% 176.7K 0.02% 1 [random.c:295 -> random.c:295] libc-2.27.so 2.20% 168.8K 0.02% 1 [rand@plt+0 -> rand@plt+0] div 1.98% 158.2K 0.02% 1 [random_r.c:388 -> random_r.c:388] libc-2.27.so 1.57% 123.3K 0.02% 1 [div.c:42 -> div.c:44] div 1.44% 116.0K 0.42% 19 [random_r.c:357 -> random_r.c:394] libc-2.27.so 0.25% 182.5K 0.02% 1 [random_r.c:388 -> random_r.c:391] libc-2.27.so 0.00% 48 1.07% 48 [x86_pmu_enable+284 -> x86_pmu_enable+298] [kernel.kallsyms] 0.00% 74 1.64% 74 [vm_mmap_pgoff+0 -> vm_mmap_pgoff+92] [kernel.kallsyms] 0.00% 73 1.62% 73 [vm_mmap+0 -> vm_mmap+48] [kernel.kallsyms] 0.00% 63 0.69% 31 [up_write+0 -> up_write+34] [kernel.kallsyms] 0.00% 13 0.29% 13 [setup_arg_pages+396 -> setup_arg_pages+413] [kernel.kallsyms] 0.00% 3 0.07% 3 [setup_arg_pages+418 -> setup_arg_pages+450] [kernel.kallsyms] 0.00% 616 6.84% 308 [security_mmap_file+0 -> security_mmap_file+72] [kernel.kallsyms] 0.00% 23 0.51% 23 [security_mmap_file+77 -> security_mmap_file+87] [kernel.kallsyms] 0.00% 4 0.02% 1 [sched_clock+0 -> sched_clock+4] [kernel.kallsyms] 0.00% 4 0.02% 1 [sched_clock+9 -> sched_clock+12] [kernel.kallsyms] 0.00% 1 0.02% 1 [rcu_nmi_exit+0 -> rcu_nmi_exit+9] [kernel.kallsyms] Committer testing: This should provide material for hours of endless joy, both from looking for suspicious things in the implementation of this patch, such as the top one: # Sampled Cycles% Sampled Cycles Avg Cycles% Avg Cycles [Program Block Range] Shared Object 2.17% 1.7M 0.08% 607 [compiler.h:199 -> common.c:221] [kernel.vmlinux] As well from things that look legit: # Sampled Cycles% Sampled Cycles Avg Cycles% Avg Cycles [Program Block Range] Shared Object 0.16% 123.0K 0.60% 4.7K [nospec-branch.h:265 -> nospec-branch.h:278] [kernel.vmlinux] :-) Very short system wide taken branches session: # perf record -h -b Usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -b, --branch-any sample any taken branches # # perf record -b ^C[ perf record: Woken up 595 times to write data ] [ perf record: Captured and wrote 156.672 MB perf.data (196873 samples) ] # # perf evlist -v cycles: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|CPU|PERIOD|BRANCH_STACK, 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, branch_sample_type: ANY # # perf report --total-cycles --stdio # To display the perf.data header info, please use --header/--header-only options. # # Total Lost Samples: 0 # # Samples: 6M of event 'cycles' # Event count (approx.): 6299936 # # Sampled Cycles% Sampled Cycles Avg Cycles% Avg Cycles [Program Block Range] Shared Object # ............... .............. ........... .......... ...................................................................... .................... # 2.17% 1.7M 0.08% 607 [compiler.h:199 -> common.c:221] [kernel.vmlinux] 1.75% 1.3M 8.34% 65.5K [memset-vec-unaligned-erms.S:147 -> memset-vec-unaligned-erms.S:151] libc-2.29.so 0.72% 544.5K 0.03% 230 [entry_64.S:657 -> entry_64.S:662] [kernel.vmlinux] 0.56% 541.8K 0.09% 672 [compiler.h:199 -> common.c:300] [kernel.vmlinux] 0.39% 293.2K 0.01% 104 [list_debug.c:43 -> list_debug.c:61] [kernel.vmlinux] 0.36% 278.6K 0.03% 272 [entry_64.S:1289 -> entry_64.S:1308] [kernel.vmlinux] 0.30% 260.8K 0.07% 564 [clear_page_64.S:47 -> clear_page_64.S:50] [kernel.vmlinux] 0.28% 215.3K 0.05% 369 [traps.c:623 -> traps.c:628] [kernel.vmlinux] 0.23% 178.1K 0.04% 278 [entry_64.S:271 -> entry_64.S:275] [kernel.vmlinux] 0.20% 152.6K 0.09% 706 [paravirt.c:177 -> paravirt.c:179] [kernel.vmlinux] 0.20% 155.8K 0.05% 373 [entry_64.S:153 -> entry_64.S:175] [kernel.vmlinux] 0.18% 136.6K 0.03% 222 [msr.h:105 -> msr.h:166] [kernel.vmlinux] 0.16% 123.0K 0.60% 4.7K [nospec-branch.h:265 -> nospec-branch.h:278] [kernel.vmlinux] 0.16% 118.3K 0.01% 44 [entry_64.S:632 -> entry_64.S:657] [kernel.vmlinux] 0.14% 104.5K 0.00% 28 [rwsem.c:1541 -> rwsem.c:1544] [kernel.vmlinux] 0.13% 99.2K 0.01% 53 [spinlock.c:150 -> spinlock.c:152] [kernel.vmlinux] 0.13% 95.5K 0.00% 35 [swap.c:456 -> swap.c:471] [kernel.vmlinux] 0.12% 96.2K 0.05% 407 [copy_user_64.S:175 -> copy_user_64.S:209] [kernel.vmlinux] 0.11% 85.9K 0.00% 31 [swap.c:400 -> page-flags.h:188] [kernel.vmlinux] 0.10% 73.0K 0.01% 52 [paravirt.h:763 -> list.h:131] [kernel.vmlinux] 0.07% 56.2K 0.03% 214 [filemap.c:1524 -> filemap.c:1557] [kernel.vmlinux] 0.07% 54.2K 0.02% 145 [memory.c:1032 -> memory.c:1049] [kernel.vmlinux] 0.07% 50.3K 0.00% 39 [mmzone.c:49 -> mmzone.c:69] [kernel.vmlinux] 0.06% 48.3K 0.01% 40 [paravirt.h:768 -> page_alloc.c:3304] [kernel.vmlinux] 0.06% 46.7K 0.02% 155 [memory.c:1032 -> memory.c:1056] [kernel.vmlinux] 0.06% 46.9K 0.01% 103 [swap.c:867 -> swap.c:902] [kernel.vmlinux] 0.06% 47.8K 0.00% 34 [entry_64.S:1201 -> entry_64.S:1202] [kernel.vmlinux] ----------------------------------------------------------- v7: --- Use use_browser in report__browse_block_hists for supporting stdio and potential tui mode. v6: --- Create report__browse_block_hists in block-info.c (codes are moved from builtin-report.c). It's called from perf_evlist__tty_browse_hists. v5: --- 1. Move all block functions to block-info.c 2. Move the code of setting ms in block hist_entry to other patch. v4: --- 1. Use new option '--total-cycles' to replace '-s total_cycles' in v3. 2. Move block info collection out of block info printing. v3: --- 1. Use common function block_info__process_sym to process the blocks per symbol. 2. Remove the nasty hack for skipping calculation of column length 3. Some minor cleanup Signed-off-by: Jin Yao <yao.jin@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: Jin Yao <yao.jin@intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191107074719.26139-6-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-09-20perf tools: Move event synthesizing routines to separate headerArnaldo Carvalho de Melo1-0/+1
Those are the only routines using the perf_event__handler_t typedef and are all related, so move to a separate header to reduce the header dependency tree, lots of places were getting event.h and even stdio.h, limits.h indirectly, so fix those as well. 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-yvx9u1mf7baq6cu1abfhbqgs@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-09-01perf auxtrace: Uninline functions that touch perf_sessionArnaldo Carvalho de Melo1-0/+1
So that we don't carry the session.h include directive in auxtrace.h, which in turn opens a can of worms of files that were getting all sorts of things via that include, fix them all. 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-d2d83aovpgri2z75wlitquni@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26perf sort: Remove needless headers from sort.h, provide fwd struct declsArnaldo Carvalho de Melo1-0/+1
Reducing the includes hell a bit more, speeding up the build and avoiding needless rebuilds when just one of those files gets updated. 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-u63el2vqsovsmnhebx1rcixo@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-09tools lib: Adopt zalloc()/zfree() from tools/perfArnaldo Carvalho de Melo1-1/+1
Eroding a bit more the tools/perf/util/util.h hodpodge header. 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-natazosyn9rwjka25tvcnyi0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-02perf diff: Print the basic block cycles diffJin Yao1-0/+27
$ perf record -b ./div $ perf record -b ./div Following is the default perf diff output $ perf diff # Event 'cycles' # # Baseline Delta Abs Shared Object Symbol # ........ ......... ................ .................................. # 48.75% +0.33% div [.] main 8.21% -0.20% div [.] compute_flag 19.02% -0.12% libc-2.23.so [.] __random_r 16.17% -0.09% libc-2.23.so [.] __random 2.27% -0.03% div [.] rand@plt +0.02% [i915] [k] gen8_irq_handler 5.52% +0.02% libc-2.23.so [.] rand This patch creates a new computation selection 'cycles'. $ perf diff -c cycles # Event 'cycles' # # Baseline [Program Block Range] Cycles Diff Shared Object Symbol # ........ ....................................... ......................................... # 48.75% [div.c:42 -> div.c:45] 147 div [.] main 48.75% [div.c:31 -> div.c:40] 4 div [.] main 48.75% [div.c:40 -> div.c:40] 0 div [.] main 48.75% [div.c:42 -> div.c:42] 0 div [.] main 48.75% [div.c:42 -> div.c:44] 0 div [.] main 19.02% [random_r.c:357 -> random_r.c:360] 0 libc-2.23.so [.] __random_r 19.02% [random_r.c:357 -> random_r.c:373] 0 libc-2.23.so [.] __random_r 19.02% [random_r.c:357 -> random_r.c:376] 0 libc-2.23.so [.] __random_r 19.02% [random_r.c:357 -> random_r.c:380] 0 libc-2.23.so [.] __random_r 19.02% [random_r.c:357 -> random_r.c:392] 0 libc-2.23.so [.] __random_r 16.17% [random.c:288 -> random.c:291] 0 libc-2.23.so [.] __random 16.17% [random.c:288 -> random.c:291] 0 libc-2.23.so [.] __random 16.17% [random.c:288 -> random.c:295] 0 libc-2.23.so [.] __random 16.17% [random.c:288 -> random.c:297] 0 libc-2.23.so [.] __random 16.17% [random.c:291 -> random.c:291] 0 libc-2.23.so [.] __random 16.17% [random.c:293 -> random.c:293] 0 libc-2.23.so [.] __random 8.21% [div.c:22 -> div.c:22] 148 div [.] compute_flag 8.21% [div.c:22 -> div.c:25] 0 div [.] compute_flag 8.21% [div.c:27 -> div.c:28] 0 div [.] compute_flag 5.52% [rand.c:26 -> rand.c:27] 0 libc-2.23.so [.] rand 5.52% [rand.c:26 -> rand.c:28] 0 libc-2.23.so [.] rand 2.27% [rand@plt+0 -> rand@plt+0] 0 div [.] rand@plt 0.01% [entry_64.S:694 -> entry_64.S:694] 16 [vmlinux] [k] native_irq_return_iret 0.00% [fair.c:7676 -> fair.c:7665] 162 [vmlinux] [k] update_blocked_averages "[Program Block Range]" indicates the range of program basic block (start -> end). If we can find the source line it prints the source line otherwise it prints the symbol+offset instead. v4: --- Use source lines or symbol+offset to indicate the basic block. It should be easier to understand. v3: --- Cast 'struct hist_entry' to 'struct block_hist' in hist_entry__block_fprintf. Use symbol_conf.report_block to check if executing hist_entry__block_fprintf. v2: --- Keep standard perf diff format and display the 'Baseline' and 'Shared Object'. The output is sorted by "Baseline" and the basic blocks in the same function are sorted by cycles diff. Signed-off-by: Jin Yao <yao.jin@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: 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/1561713784-30533-7-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-26perf tools: Remove trim() implementation, use tools/lib's strim()Arnaldo Carvalho de Melo1-1/+1
Moving more stuff out of tools/perf/util/ and using the kernel idiom. 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-wpj8rktj62yse5dq6ckny6de@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-26perf tools: Ditch rtrim(), use skip_spaces() to get closer to the kernelArnaldo Carvalho de Melo1-1/+1
No change in behaviour, just using the same kernel idiom for such operation. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: André Goddard Rosa <andre.goddard@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-a85lkptkt0ru40irpga8yf54@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-26tools perf: Move from sane_ctype.h obtained from git to the Linux's originalArnaldo Carvalho de Melo1-1/+1
We got the sane_ctype.h headers from git and kept using it so far, but since that code originally came from the kernel sources to the git sources, perhaps its better to just use the one in the kernel, so that we can leverage tools/perf/check_headers.sh to be notified when our copy gets out of sync, i.e. when fixes or goodies are added to the code we've copied. This will help with things like tools/lib/string.c where we want to have more things in common with the kernel, such as strim(), skip_spaces(), etc so as to go on removing the things that we have in tools/perf/util/ and instead using the code in the kernel, indirectly and removing things like EXPORT_SYMBOL(), etc, getting notified when fixes and improvements are made to the original code. Hopefully this also should help with reducing the difference of code hosted in tools/ to the one in the kernel proper. 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-7k9868l713wqtgo01xxygn12@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-25perf ui stdio: No need to use 'spaces' to left alignArnaldo Carvalho de Melo1-3/+7
We can just use the 'field width' for the %s used to print the alignment, this way we'll get the same result without requiring having a variable with just lots of space chars. No way to do that for the dots tho, we still need that variable filled with dot chars. # perf report --stdio --hierarchy > before # perf report --stdio --hierarchy > after # diff before after # I.e. it continues as: # perf report --stdio --hierarchy | head -15 # To display the perf.data header info, please use --header/--header-only options. # # # Total Lost Samples: 0 # # Samples: 107 of event 'cycles' # Event count (approx.): 31378313 # # Overhead Command / Shared Object / Symbol # .............. ............................................ # 80.13% swapper 72.29% [kernel.vmlinux] 49.85% [k] intel_idle 9.05% [k] tick_nohz_next_event # 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-9s1dxik37waveor7c84hqti2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-06perf tools: Add missing include <callchain.h> in various placesArnaldo Carvalho de Melo1-0/+1
Its getting it from hist.h and that will go away, as that header doesn't need callchain.h at all. 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-6ebl3mwwiqocl79yts44qltu@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-06perf tools: Add missing include for symbols.hArnaldo Carvalho de Melo1-0/+1
Several places were using definitions found in symbols.h but not including it, getting it by sheer luck from some other headers that now are in the process of removing that include because they don't need it or because simply having struct forward declarations is enough, fix it. 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-xbcvvx296d70kpg9wb0qmeq9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-06perf map: Move structs and prototypes for map groups to a separate headerArnaldo Carvalho de Melo1-0/+1
And since machine.h only needs what is in there, make it stop including map.h and instead include this newly introduced map_groups.h instead. 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-dbob25fv5rp2rjpwlnterf38@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-06perf callchain: Uninline callchain_cursor_reset() to remove map.h dependencyArnaldo Carvalho de Melo1-0/+1
That was the only thing that made including map.h in callchain.h a requiriment, so uninline it and just add a 'struct map' forward declaration. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-7fjz4hvv1bpzqaeriku44fn4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-25perf hist: Use cached rbtreesDavidlohr Bueso1-1/+2
At the cost of an extra pointer, we can avoid the O(logN) cost of finding the first element in the tree (smallest node), which is something heavily required for histograms. Specifically, the following are converted to rb_root_cached, and users accordingly: hist::entries_in_array hist::entries_in hist::entries hist::entries_collapsed hist_entry::hroot_in hist_entry::hroot_out Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20181206191819.30182-7-dave@stgolabs.net [ Added some missing conversions to rb_first_cached() ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-07-24perf hists: Clarify callchain disabling when availableArnaldo Carvalho de Melo1-4/+4
We want to allow having mixed events with/without callchains, not using a global flag to show callchains, but allowing supressing callchains when they are present. So invert the logic of the last parameter to hists__fprint() to that effect. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-ohqyisr6qge79qa95ojslptx@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-06-06perf hists: Check if a hist_entry has callchains before using themArnaldo Carvalho de Melo1-2/+2
So far if we use 'perf record -g' this will make symbol_conf.use_callchain 'true' and logic will assume that all events have callchains enabled, but ever since we added the possibility of setting up callchains for some events (e.g.: -e cycles/call-graph=dwarf/) while not for others, we limit usage scenarios by looking at that symbol_conf.use_callchain global boolean, we better look at each event attributes. On the road to that we need to look if a hist_entry has callchains, that is, to go from hist_entry->hists to the evsel that contains it, to then look at evsel->sample_type for PERF_SAMPLE_CALLCHAIN. The next step is to add a symbol_conf.ignore_callchains global, to use in the places where what we really want to know is if callchains should be ignored, even if present. Then -g will mean just to select a callchain mode to be applied to all events not explicitely setting some other callchain mode, i.e. a default callchain mode, and --no-call-graph will set symbol_conf.ignore_callchains with that clear intention. That too will at some point become a per evsel thing, that tools can set for all or just a few of its evsels. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-0sas5cm4dsw2obn75g7ruz69@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-04-26perf ui stdio: Use map_groups__fprintf()Arnaldo Carvalho de Melo1-2/+1
Instead of the variant that allows asking for just a specific map_type, because that map_type split will go away. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-eya0jvmu26qvro0nxxd49xia@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-16perf report: Show zero counters as well in 'perf report --stat'Ingo Molnar1-5/+1
When recently using 'perf report --stat' it was not clear to me from the output whether a particular statistics field (LOST_SAMPLES) was not present, or just zero: fomalhaut:~> perf report --stat Aggregated stats: TOTAL events: 495984 MMAP events: 85 COMM events: 3389 EXIT events: 1605 THROTTLE events: 2 UNTHROTTLE events: 2 FORK events: 3377 SAMPLE events: 472629 MMAP2 events: 14753 FINISHED_ROUND events: 139 THREAD_MAP events: 1 CPU_MAP events: 1 TIME_CONV events: 1 I had to check the output several times to ascertain that I'm not misreading the output, that the field didn't change and that I didn't misremember the name. In fact I had to look into the perf source to make sure that zero fields are indeed not shown. With the patch applied: fomalhaut:~> perf report --stat Aggregated stats: TOTAL events: 495984 MMAP events: 85 LOST events: 0 COMM events: 3389 EXIT events: 1605 THROTTLE events: 2 UNTHROTTLE events: 2 FORK events: 3377 READ events: 0 SAMPLE events: 472629 MMAP2 events: 14753 AUX events: 0 ITRACE_START events: 0 LOST_SAMPLES events: 0 SWITCH events: 0 SWITCH_CPU_WIDE events: 0 NAMESPACES events: 0 ATTR events: 0 EVENT_TYPE events: 0 TRACING_DATA events: 0 BUILD_ID events: 0 FINISHED_ROUND events: 139 ID_INDEX events: 0 AUXTRACE_INFO events: 0 AUXTRACE events: 0 AUXTRACE_ERROR events: 0 THREAD_MAP events: 1 CPU_MAP events: 1 STAT_CONFIG events: 0 STAT events: 0 STAT_ROUND events: 0 EVENT_UPDATE events: 0 TIME_CONV events: 1 FEATURE events: 0 It's pretty clear at a glance that LOST_SAMPLES is present but zero. The original output can still be gotten via: fomalhaut:~> perf report --stat | grep -vw 0 Aggregated stats: TOTAL events: 495984 MMAP events: 85 COMM events: 3389 EXIT events: 1605 THROTTLE events: 2 UNTHROTTLE events: 2 FORK events: 3377 SAMPLE events: 472629 MMAP2 events: 14753 FINISHED_ROUND events: 139 THREAD_MAP events: 1 CPU_MAP events: 1 TIME_CONV events: 1 So I don't think there's any real loss in functionality. Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20180307152430.7e5h7e657b7bgd7q@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-07Merge branch 'linus' into perf/core, to fix conflictsIngo Molnar1-0/+1
Conflicts: tools/perf/arch/arm/annotate/instructions.c tools/perf/arch/arm64/annotate/instructions.c tools/perf/arch/powerpc/annotate/instructions.c tools/perf/arch/s390/annotate/instructions.c tools/perf/arch/x86/tests/intel-cqm.c tools/perf/ui/tui/progress.c tools/perf/util/zlib.c Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-11-02License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman1-0/+1
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-24perf report: Remove code to handle inline frames from browsersMilian Wolff1-76/+1
The follow-up commits will make inline frames first-class citizens in the callchain, thereby obsoleting all of this special code. Signed-off-by: Milian Wolff <milian.wolff@kdab.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Reviewed-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yao Jin <yao.jin@linux.intel.com> Link: http://lkml.kernel.org/r/20171009203310.17362-2-milian.wolff@kdab.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-30perf report: Calculate the average cycles of iterationsJin Yao1-7/+3
The branch history code has a loop detection function. With this, we can get the number of iterations by calculating the removed loops. While it would be nice for knowing the average cycles of iterations. This patch adds up the cycles in branch entries of removed loops and save the result to the next branch entry (e.g. branch entry A). Finally it will display the iteration number and average cycles at the "from" of branch entry A. For example: perf record -g -j any,save_type ./div perf report --branch-history --no-children --stdio --22.63%--main div.c:42 (RET CROSS_2M) compute_flag div.c:28 (cycles:2 iter:173115 avg_cycles:2) | --10.73%--compute_flag div.c:27 (RET CROSS_2M) rand rand.c:28 (cycles:1) rand rand.c:28 (RET CROSS_2M) __random random.c:298 (cycles:1) __random random.c:297 (COND_BWD CROSS_2M) __random random.c:295 (cycles:1) __random random.c:295 (COND_BWD CROSS_2M) __random random.c:295 (cycles:1) __random random.c:295 (RET CROSS_2M) Signed-off-by: Yao Jin <yao.jin@linux.intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1502111115-18305-1-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-07-20tools include: Adopt strstarts() from the kernelArnaldo Carvalho de Melo1-1/+2
Replacing prefixcmp(), same purpose, inverted result, so standardize on the kernel variant, to reduce silly differences among tools/ and the kernel sources, making it easier for people to work in both codebases. And then doing: if (strstarts(option, "no-")) Looks clearer than doing: if (!prefixcmp(option, "no-")) To figure out if option starts witn "no-". Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-kaei42gi7lpa8subwtv7eug8@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-07-19perf report: Enable finding kernel inline functionsJin Yao1-3/+0
Currently perf supports a mode to query inline stack. It works well for finding user space inline functions but it doesn't work for kernel ones, due to some unnecessary check. This patch removes these unnecessary checks. Now kernel inline functions can be reported. For example: perf report --inline -g func --stdio |--46.19%--do_huge_pmd_anonymous_page | do_huge_pmd_anonymous_page (inline) | __do_huge_pmd_anonymous_page (inline) | __SetPageUptodate (inline) | __set_bit (inline) The result is compared with the output of addr2line. They match. Signed-off-by: Yao Jin <yao.jin@linux.intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1500409892-15904-1-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-04-24perf tools: Use just forward declarations for struct thread where possibleArnaldo Carvalho de Melo1-0/+1
Removing various instances of unnecessary includes, reducing the maze of header dependencies. Link: http://lkml.kernel.org/n/tip-hwu6eyuok9pc57alookyzmsf@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-04-19perf tools: Move extra string util functions to util/string2.hArnaldo Carvalho de Melo1-0/+1
Moving them from util.h, where they don't belong. Since libc already have string.h, name it slightly differently, as string2.h. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-eh3vz5sqxsrdd8lodoro4jrw@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-04-19perf tools: Move srcline definitions to separate headerArnaldo Carvalho de Melo1-0/+1
Out of util.h into a new file, srcline.h Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-ludnlm4djqcdjziekzr4s3u9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-04-19perf tools: Move sane ctype stuff from util.h to sane_ctype.hArnaldo Carvalho de Melo1-1/+1
More stuff that came from git, out of the hodge-podge that is util.h Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-e3lana4gctz3ub4hn4y29hkw@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-03-27perf report: Enable sorting by srcline as keyMilian Wolff1-1/+2
Often it is interesting to know how costly a given source line is in total. Previously, one had to build these sums manually based on all addresses that pointed to the same source line. This patch introduces srcline as a sort key, which will do the aggregation for us. Paired with the recent addition of showing inline frames, this makes perf report much more useful for many C++ work loads. The following shows the new feature in action. First, let's show the status quo output when we sort by address. The result contains many hist entries that generate the same output: ~~~~~~~~~~~~~~~~ $ perf report --stdio --inline -g address # Children Self Command Shared Object Symbol # ........ ........ ............ ................... ......................................... # 99.89% 35.34% cpp-inlining cpp-inlining [.] main | |--64.55%--main complex:655 | /home/milian/projects/kdab/rnd/hotspot/tests/test-clients/cpp-inlining/main.cpp:39 (inline) | /usr/include/c++/6.3.1/complex:664 (inline) | | | |--60.31%--hypot +20 | | | | | |--8.52%--__hypot_finite +273 | | | | | |--7.32%--__hypot_finite +411 ... --35.34%--_start +4194346 __libc_start_main +241 | |--6.65%--main random.tcc:3326 | /home/milian/projects/kdab/rnd/hotspot/tests/test-clients/cpp-inlining/main.cpp:39 (inline) | /usr/include/c++/6.3.1/bits/random.h:1809 (inline) | /usr/include/c++/6.3.1/bits/random.h:1818 (inline) | /usr/include/c++/6.3.1/bits/random.h:185 (inline) | |--2.70%--main random.tcc:3326 | /home/milian/projects/kdab/rnd/hotspot/tests/test-clients/cpp-inlining/main.cpp:39 (inline) | /usr/include/c++/6.3.1/bits/random.h:1809 (inline) | /usr/include/c++/6.3.1/bits/random.h:1818 (inline) | /usr/include/c++/6.3.1/bits/random.h:185 (inline) | |--1.69%--main random.tcc:3326 | /home/milian/projects/kdab/rnd/hotspot/tests/test-clients/cpp-inlining/main.cpp:39 (inline) | /usr/include/c++/6.3.1/bits/random.h:1809 (inline) | /usr/include/c++/6.3.1/bits/random.h:1818 (inline) | /usr/include/c++/6.3.1/bits/random.h:185 (inline) ... ~~~~~~~~~~~~~~~~ With this patch and `-g srcline` we instead get the following output: ~~~~~~~~~~~~~~~~ $ perf report --stdio --inline -g srcline # Children Self Command Shared Object Symbol # ........ ........ ............ ................... ......................................... # 99.89% 35.34% cpp-inlining cpp-inlining [.] main | |--64.55%--main complex:655 | /home/milian/projects/kdab/rnd/hotspot/tests/test-clients/cpp-inlining/main.cpp:39 (inline) | /usr/include/c++/6.3.1/complex:664 (inline) | | | |--64.02%--hypot | | | | | --59.81%--__hypot_finite | | | --0.53%--cabs | --35.34%--_start __libc_start_main | |--12.48%--main random.tcc:3326 | /home/milian/projects/kdab/rnd/hotspot/tests/test-clients/cpp-inlining/main.cpp:39 (inline) | /usr/include/c++/6.3.1/bits/random.h:1809 (inline) | /usr/include/c++/6.3.1/bits/random.h:1818 (inline) | /usr/include/c++/6.3.1/bits/random.h:185 (inline) ... ~~~~~~~~~~~~~~~~ Signed-off-by: Milian Wolff <milian.wolff@kdab.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Yao Jin <yao.jin@linux.intel.com> Link: http://lkml.kernel.org/r/20170318214928.9047-1-milian.wolff@kdab.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-03-27perf report: Show inline stack for stdio modeJin Yao1-1/+84
If the address belongs to an inlined function, the source information back to the first non-inlined function will be printed. For example: 1. Show inlined function name perf report --stdio -g function --inline 0.69% 0.00% inline ld-2.23.so [.] dl_main | ---dl_main | --0.56%--_dl_relocate_object _dl_relocate_object (inline) elf_dynamic_do_Rela (inline) 2. Show the file/line information perf report --stdio -g address --inline 0.69% 0.00% inline ld-2.23.so [.] _dl_start_user | ---_dl_start_user .:0 _dl_start rtld.c:307 /build/glibc-GKVZIf/glibc-2.23/elf/rtld.c:413 (inline) _dl_sysdep_start dl-sysdep.c:250 | --0.56%--dl_main rtld.c:2076 Committer tests: # perf record --call-graph dwarf ~/bin/perf stat usleep 1 Performance counter stats for 'usleep 1': 0.443020 task-clock (msec) # 0.449 CPUs utilized 1 context-switches # 0.002 M/sec 0 cpu-migrations # 0.000 K/sec 52 page-faults # 0.117 M/sec 1,049,423 cycles # 2.369 GHz 801,456 instructions # 0.76 insn per cycle 155,609 branches # 351.246 M/sec 7,026 branch-misses # 4.52% of all branches 0.000987570 seconds time elapsed [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.553 MB perf.data (66 samples) ] # perf report --stdio --inline fs__get_mountpoint <SNIP> 1.73% 0.00% perf perf [.] fs__get_mountpoint | ---fs__get_mountpoint fs__get_mountpoint (inline) fs__check_mounts (inline) __statfs entry_SYSCALL_64 sys_statfs SYSC_statfs user_statfs user_path_at_empty filename_lookup path_lookupat link_path_walk inode_permission __inode_permission kernfs_iop_permission kernfs_refresh_inode security_inode_notifysecctx selinux_inode_notifysecctx selinux_inode_setsecurity security_context_to_sid security_context_to_sid_core string_to_context_struct symcmp Signed-off-by: Yao Jin <yao.jin@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Milian Wolff <milian.wolff@kdab.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Link: http://lkml.kernel.org/r/1490474069-15823-5-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-11-14perf report: Show branch info in callchain entry for stdio modeJin Yao1-4/+31
If the branch is 100% predicted then the "predicted" is hidden. Similarly, if there is no branch tsx abort, the "abort" is hidden. There is only cycles shown (cycle is supported on skylake platform, older platform would be 0). If no iterations, the "iterations" is hidden. For example: |--29.93%--main div.c:39 (predicted:50.6%, cycles:1, iterations:18) | main div.c:44 (predicted:50.6%, cycles:1) | | | --22.69%--main div.c:42 (cycles:2, iterations:17) | compute_flag div.c:28 (cycles:2) | | | --10.52%--compute_flag div.c:27 (cycles:1) | rand rand.c:28 (cycles:1) | rand rand.c:28 (cycles:1) | __random random.c:298 (cycles:1) | __random random.c:297 (cycles:1) | __random random.c:295 (cycles:1) | __random random.c:295 (cycles:1) | __random random.c:295 (cycles:1) | __random random.c:295 (cycles:6) Signed-off-by: Yao Jin <yao.jin@linux.intel.com> Acked-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Cc: Linux-kernel@vger.kernel.org Cc: Yao Jin <yao.jin@linux.intel.com> Link: http://lkml.kernel.org/r/1477876794-30749-5-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-22perf hists: Make hists__fprintf_headers function globalJiri Olsa1-1/+1
Will be used from external places in the upcoming c2c patch series. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1474558645-19956-10-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-22perf hists: Make __hist_entry__snprintf function globalJiri Olsa1-2/+2
Will be used from external places in the upcoming c2c patch series. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1474558645-19956-9-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-22perf hists: Add __hist_entry__snprintf functionJiri Olsa1-2/+8
Add __hist_entry__snprintf() to take a perf_hpp_list as an argument instead of using he->hists->hpp_list. This way we can display arbitrary list of entries regardless of the hists setup, which will be useful in the upcoming c2c patch series. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1474558645-19956-2-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-21perf hists: Use bigger buffer for stdio headersJiri Olsa1-1/+1
With node column on big CPUs servers we can run out of stdio header space quite soon. Enlarging header buffer. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1474290610-23241-5-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-20perf hists: Factor out hists__reset_column_width()Namhyung Kim1-9/+1
The stdio and tui has same code to reset hpp format column width. Factor it out as a new function. Suggested-and-Acked-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20160920053025.13989-2-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-13perf ui/stdio: Rename print_hierarchy_header()Namhyung Kim1-10/+3
Now the hists__fprintf_hierarchy_headers() is a simple wrapper passing field separator. Let's do it directly. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20160913074552.13284-6-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-13perf ui/stdio: Always reset output width for hierarchyNamhyung Kim1-8/+6
When the --hierarchy option is used, each entry has its own hpp_list to show the result. But it is not updating the width of each column for perf-top. The perf-report command has no problem since it resets it during header display. $ sudo perf top --hierarchy --stdio PerfTop: 160 irqs/sec kernel:38.8% exact: 100.0% [4000Hz cycles:pp], (all, 12 CPUs) ---------------------------------------------------------------------- 52.32% perf 24.74% [.] __symbols__insert 5.62% [.] rb_next 5.14% [.] dso__load_sym Move the code into hists__fprintf() so that it can be called always. Also it'd be better to put similar code together. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Fixes: 1b2dbbf41a0f ("perf hists: Use own hpp_list for hierarchy mode") Link: http://lkml.kernel.org/r/20160913074552.13284-5-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-23perf hists: Add support for header spanJiri Olsa1-5/+8
Add span argument for header callback function. The handling of this argument is completely in the hands of the callback. The only thing the caller ensures is it's zeroed on the beginning. Omitting span skipping in hierarchy headers and gtk code. The c2c code use this to span header lines based on the entries span configuration. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1470583710-1649-6-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-23perf tools stdio: Display multiple header linesJiri Olsa1-9/+25
Display multiple header lines in stdio output , if it's configured within struct perf_hpp_list::nr_header_lines. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1470583710-1649-5-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-23perf hists: Add line argument into perf_hpp_fmt's header callbackJiri Olsa1-3/+3
Adding line argument into perf_hpp_fmt's header callback to be able to request specific header line. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1470583710-1649-3-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-15perf hists: Replace perf_evsel arg perf_hpp_fmt's width callbackJiri Olsa1-3/+3
Replacing perf_evsel arg perf_hpp_fmt's width callback with hists object. This will be helpful in future for non evsel related hist browsers. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1465928361-2442-11-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-15perf hists: Replace perf_evsel arg perf_hpp_fmt's header callbackJiri Olsa1-3/+3
Replacing perf_evsel arg perf_hpp_fmt's header callback with hists object. None of the actual callbacks actually use evsel object, also this will be helpful in future for non evsel related hist browsers. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1465928361-2442-10-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-15perf stdio: Add use_callchain parameter to hists__fprintfJiri Olsa1-4/+6
It will be convenient in following patches to display hists entries without callchains even if they are defined. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1465928361-2442-9-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-15perf stdio: Do not pass hists in hist_entry__fprintfJiri Olsa1-2/+2
There's no need, we have the hists pointer in struct hist_entry. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1465928361-2442-8-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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