perf build: Remove NO_AUXTRACE build option

2025-11-14T07:03:11+00:00

The NO_AUXTRACE build option was used when the __get_cpuid feature test failed or if it was provided on the command line. The option no longer avoids a dependency on a library and so having the option is just adding complexity to the code base. Remove the option CONFIG_AUXTRACE from Build files and HAVE_AUXTRACE_SUPPORT by assuming it is always defined. Signed-off-by: Ian Rogers Reviewed-by: James Clark Signed-off-by: Namhyung Kim

perf util: Make util its own library

2024-06-26T18:07:42+00:00

Make the util directory into its own library. This is done to avoid compiling code twice, once for the perf tool and once for the perf python module. For convenience: arch/common.c scripts/perl/Perf-Trace-Util/Context.c scripts/python/Perf-Trace-Util/Context.c are made part of this library. Signed-off-by: Ian Rogers Reviewed-by: James Clark Cc: Suzuki K Poulose Cc: Kees Cook Cc: Palmer Dabbelt Cc: Albert Ou Cc: Nick Terrell Cc: Gary Guo Cc: Alex Gaynor Cc: Boqun Feng Cc: Wedson Almeida Filho Cc: Ze Gao Cc: Alice Ryhl Cc: Andrei Vagin Cc: Yicong Yang Cc: Jonathan Cameron Cc: Guo Ren Cc: Miguel Ojeda Cc: Will Deacon Cc: Mike Leach Cc: Leo Yan Cc: Oliver Upton Cc: John Garry Cc: Benno Lossin Cc: Björn Roy Baron Cc: Andreas Hindborg Cc: Paul Walmsley Signed-off-by: Namhyung Kim Link: https://lore.kernel.org/r/20240625214117.953777-7-irogers@google.com

perf arm-spe: Support synthetic events

2020-06-01T15:24:23+00:00

After the commit ffd3d18c20b8 ("perf tools: Add ARM Statistical Profiling Extensions (SPE) support") has been merged, it supports to output raw data with option "--dump-raw-trace". However, it misses for support synthetic events so cannot output any statistical info. This patch is to improve the "perf report" support for ARM SPE for four types synthetic events: First level cache synthetic events, including L1 data cache accessing and missing events; Last level cache synthetic events, including last level cache accessing and missing events; TLB synthetic events, including TLB accessing and missing events; Remote access events, which is used to account load/store operations caused to another socket. Example usage: $ perf record -c 1024 -e arm_spe_0/branch_filter=1,ts_enable=1,pct_enable=1,pa_enable=1,load_filter=1,jitter=1,store_filter=1,min_latency=0/ dd if=/dev/zero of=/dev/null count=10000 $ perf report --stdio # Samples: 59 of event 'l1d-miss' # Event count (approx.): 59 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. .................................. # 23.73% 23.73% dd [kernel.kallsyms] [k] perf_iterate_ctx.constprop.135 20.34% 20.34% dd [kernel.kallsyms] [k] filemap_map_pages 5.08% 5.08% dd [kernel.kallsyms] [k] perf_event_mmap 5.08% 5.08% dd [kernel.kallsyms] [k] unlock_page_memcg 5.08% 5.08% dd [kernel.kallsyms] [k] unmap_page_range 3.39% 3.39% dd [kernel.kallsyms] [k] PageHuge 3.39% 3.39% dd [kernel.kallsyms] [k] release_pages 3.39% 3.39% dd ld-2.28.so [.] 0x0000000000008b5c 1.69% 1.69% dd [kernel.kallsyms] [k] __alloc_fd [...] # Samples: 3K of event 'l1d-access' # Event count (approx.): 3980 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ...................................... # 26.98% 26.98% dd [kernel.kallsyms] [k] ret_to_user 10.53% 10.53% dd [kernel.kallsyms] [k] fsnotify 7.51% 7.51% dd [kernel.kallsyms] [k] new_sync_read 4.57% 4.57% dd [kernel.kallsyms] [k] vfs_read 4.35% 4.35% dd [kernel.kallsyms] [k] vfs_write 3.69% 3.69% dd [kernel.kallsyms] [k] __fget_light 3.69% 3.69% dd [kernel.kallsyms] [k] rw_verify_area 3.44% 3.44% dd [kernel.kallsyms] [k] security_file_permission 2.76% 2.76% dd [kernel.kallsyms] [k] __fsnotify_parent 2.44% 2.44% dd [kernel.kallsyms] [k] ksys_write 2.24% 2.24% dd [kernel.kallsyms] [k] iov_iter_zero 2.19% 2.19% dd [kernel.kallsyms] [k] read_iter_zero 1.81% 1.81% dd dd [.] 0x0000000000002960 1.78% 1.78% dd dd [.] 0x0000000000002980 [...] # Samples: 35 of event 'llc-miss' # Event count (approx.): 35 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ........................... # 34.29% 34.29% dd [kernel.kallsyms] [k] filemap_map_pages 8.57% 8.57% dd [kernel.kallsyms] [k] unlock_page_memcg 8.57% 8.57% dd [kernel.kallsyms] [k] unmap_page_range 5.71% 5.71% dd [kernel.kallsyms] [k] PageHuge 5.71% 5.71% dd [kernel.kallsyms] [k] release_pages 5.71% 5.71% dd ld-2.28.so [.] 0x0000000000008b5c 2.86% 2.86% dd [kernel.kallsyms] [k] __queue_work 2.86% 2.86% dd [kernel.kallsyms] [k] __radix_tree_lookup 2.86% 2.86% dd [kernel.kallsyms] [k] copy_page [...] # Samples: 2 of event 'llc-access' # Event count (approx.): 2 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ............. # 50.00% 50.00% dd [kernel.kallsyms] [k] copy_page 50.00% 50.00% dd libc-2.28.so [.] _dl_addr # Samples: 48 of event 'tlb-miss' # Event count (approx.): 48 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. .................................. # 20.83% 20.83% dd [kernel.kallsyms] [k] perf_iterate_ctx.constprop.135 12.50% 12.50% dd [kernel.kallsyms] [k] __arch_clear_user 10.42% 10.42% dd [kernel.kallsyms] [k] clear_page 4.17% 4.17% dd [kernel.kallsyms] [k] copy_page 4.17% 4.17% dd [kernel.kallsyms] [k] filemap_map_pages 2.08% 2.08% dd [kernel.kallsyms] [k] __alloc_fd 2.08% 2.08% dd [kernel.kallsyms] [k] __mod_memcg_state.part.70 2.08% 2.08% dd [kernel.kallsyms] [k] __queue_work 2.08% 2.08% dd [kernel.kallsyms] [k] __rcu_read_unlock 2.08% 2.08% dd [kernel.kallsyms] [k] d_path 2.08% 2.08% dd [kernel.kallsyms] [k] destroy_inode 2.08% 2.08% dd [kernel.kallsyms] [k] do_dentry_open [...] # Samples: 9K of event 'tlb-access' # Event count (approx.): 9573 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ...................................... # 25.79% 25.79% dd [kernel.kallsyms] [k] __arch_clear_user 11.22% 11.22% dd [kernel.kallsyms] [k] ret_to_user 8.56% 8.56% dd [kernel.kallsyms] [k] fsnotify 4.06% 4.06% dd [kernel.kallsyms] [k] new_sync_read 3.67% 3.67% dd [kernel.kallsyms] [k] el0_svc_common.constprop.2 3.04% 3.04% dd [kernel.kallsyms] [k] __fsnotify_parent 2.90% 2.90% dd [kernel.kallsyms] [k] vfs_write 2.82% 2.82% dd [kernel.kallsyms] [k] vfs_read 2.52% 2.52% dd libc-2.28.so [.] write 2.26% 2.26% dd [kernel.kallsyms] [k] security_file_permission 2.08% 2.08% dd [kernel.kallsyms] [k] ksys_write 1.96% 1.96% dd [kernel.kallsyms] [k] rw_verify_area 1.95% 1.95% dd [kernel.kallsyms] [k] read_iter_zero [...] # Samples: 9 of event 'branch-miss' # Event count (approx.): 9 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ......................... # 22.22% 22.22% dd libc-2.28.so [.] _dl_addr 11.11% 11.11% dd [kernel.kallsyms] [k] __arch_clear_user 11.11% 11.11% dd [kernel.kallsyms] [k] __arch_copy_from_user 11.11% 11.11% dd [kernel.kallsyms] [k] __dentry_kill 11.11% 11.11% dd [kernel.kallsyms] [k] __efistub_memcpy 11.11% 11.11% dd ld-2.28.so [.] 0x0000000000012b7c 11.11% 11.11% dd libc-2.28.so [.] 0x000000000002a980 11.11% 11.11% dd libc-2.28.so [.] 0x0000000000083340 # Samples: 29 of event 'remote-access' # Event count (approx.): 29 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ........................... # 41.38% 41.38% dd [kernel.kallsyms] [k] filemap_map_pages 10.34% 10.34% dd [kernel.kallsyms] [k] unlock_page_memcg 10.34% 10.34% dd [kernel.kallsyms] [k] unmap_page_range 6.90% 6.90% dd [kernel.kallsyms] [k] release_pages 3.45% 3.45% dd [kernel.kallsyms] [k] PageHuge 3.45% 3.45% dd [kernel.kallsyms] [k] __queue_work 3.45% 3.45% dd [kernel.kallsyms] [k] page_add_file_rmap 3.45% 3.45% dd [kernel.kallsyms] [k] page_counter_try_charge 3.45% 3.45% dd [kernel.kallsyms] [k] page_remove_rmap 3.45% 3.45% dd [kernel.kallsyms] [k] xas_start 3.45% 3.45% dd ld-2.28.so [.] 0x0000000000002a1c 3.45% 3.45% dd ld-2.28.so [.] 0x0000000000008b5c 3.45% 3.45% dd ld-2.28.so [.] 0x00000000000093cc Signed-off-by: Tan Xiaojun Tested-by: James Clark Cc: Adrian Hunter Cc: Al Grant Cc: Alexander Shishkin Cc: Andi Kleen Cc: Ian Rogers Cc: Jin Yao Cc: Jiri Olsa Cc: Leo Yan Cc: Mark Rutland Cc: Mathieu Poirier Cc: Mike Leach Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Will Deacon Cc: linux-arm-kernel@lists.infradead.org Link: http://lore.kernel.org/lkml/20200530122442.490-4-leo.yan@linaro.org Signed-off-by: James Clark Signed-off-by: Leo Yan Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Move arm-spe-pkt-decoder.h/c to the new dir

2020-06-01T15:24:23+00:00

Create a new arm-spe-decoder directory for subsequent extensions and move arm-spe-pkt-decoder.h/c to this directory. No code changes. Signed-off-by: Tan Xiaojun Tested-by: James Clark Tested-by: Qi Liu Cc: Adrian Hunter Cc: Al Grant Cc: Alexander Shishkin Cc: Andi Kleen Cc: Ian Rogers Cc: Jin Yao Cc: Jiri Olsa Cc: Leo Yan Cc: Mark Rutland Cc: Mathieu Poirier Cc: Mike Leach Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Will Deacon Cc: linux-arm-kernel@lists.infradead.org Link: http://lore.kernel.org/lkml/20200530122442.490-2-leo.yan@linaro.org Signed-off-by: James Clark Signed-off-by: Leo Yan Signed-off-by: Arnaldo Carvalho de Melo

kernel/linux.git/tools/perf/util/arm-spe-decoder/Build, branch v6.19.11

perf build: Remove NO_AUXTRACE build option

perf util: Make util its own library

perf arm-spe: Support synthetic events

perf tools: Move arm-spe-pkt-decoder.h/c to the new dir