linux/tools/lib, branch v4.19

perf tools: Fix tracing_path_mount proper path

2018-10-16T15:27:46Z

If there's no tracefs (RHEL7) support the tracing_path_mount returns debugfs path which results in following fail: # perf probe sys_write kprobe_events file does not exist - please rebuild kernel with CONFIG_KPROBE_EVENTS. Error: Failed to add events. In tracing_path_debugfs_mount function we need to return the 'tracing' path instead of just the mount to make it work: # perf probe sys_write Added new event: probe:sys_write (on sys_write) You can now use it in all perf tools, such as: perf record -e probe:sys_write -aR sleep 1 Adding the 'return tracing_path;' also to tracing_path_tracefs_mount function just for consistency with tracing_path_debugfs_mount. Upstream keeps working, because it has the tracefs support. Link: http://lkml.kernel.org/n/tip-yiwkzexq9fk1ey1xg3gnjlw4@git.kernel.org Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Steven Rostedt Fixes: 23773ca18b39 ("perf tools: Make perf aware of tracefs") Link: http://lkml.kernel.org/r/20181016114818.3595-1-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

tools lib bpf: Provide wrapper for strerror_r to build in !_GNU_SOURCE systems

2018-09-18T13:16:18Z

Same problem that got fixed in a similar fashion in tools/perf/ in c8b5f2c96d1b ("tools: Introduce str_error_r()"), fix it in the same way, licensing needs to be sorted out to libbpf to use libapi, so, for this simple case, just get the same wrapper in tools/lib/bpf. This makes libbpf and its users (bpftool, selftests, perf) to build again in Alpine Linux 3.[45678] and edge. Acked-by: Alexei Starovoitov Cc: Adrian Hunter Cc: Daniel Borkmann Cc: David Ahern Cc: Hendrik Brueckner Cc: Jakub Kicinski Cc: Jiri Olsa Cc: Martin KaFai Lau Cc: Namhyung Kim Cc: Quentin Monnet Cc: Thomas Richter Cc: Wang Nan Cc: Yonghong Song Fixes: 1ce6a9fc1549 ("bpf: fix build error in libbpf with EXTRA_CFLAGS="-Wp, -D_FORTIFY_SOURCE=2 -O2"") Link: https://lkml.kernel.org/r/20180917151636.GA21790@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2018-08-26T18:25:21Z

Pull perf updates from Thomas Gleixner: "Kernel: - Improve kallsyms coverage - Add x86 entry trampolines to kcore - Fix ARM SPE handling - Correct PPC event post processing Tools: - Make the build system more robust - Small fixes and enhancements all over the place - Update kernel ABI header copies - Preparatory work for converting libtraceevnt to a shared library - License cleanups" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (100 commits) tools arch: Update arch/x86/lib/memcpy_64.S copy used in 'perf bench mem memcpy' tools arch x86: Update tools's copy of cpufeatures.h perf python: Fix pyrf_evlist__read_on_cpu() interface perf mmap: Store real cpu number in 'struct perf_mmap' perf tools: Remove ext from struct kmod_path perf tools: Add gzip_is_compressed function perf tools: Add lzma_is_compressed function perf tools: Add is_compressed callback to compressions array perf tools: Move the temp file processing into decompress_kmodule perf tools: Use compression id in decompress_kmodule() perf tools: Store compression id into struct dso perf tools: Add compression id into 'struct kmod_path' perf tools: Make is_supported_compression() static perf tools: Make decompress_to_file() function static perf tools: Get rid of dso__needs_decompress() call in __open_dso() perf tools: Get rid of dso__needs_decompress() call in symbol__disassemble() perf tools: Get rid of dso__needs_decompress() call in read_object_code() tools lib traceevent: Change to SPDX License format perf llvm: Allow passing options to llc in addition to clang perf parser: Improve error message for PMU address filters ...

tools lib traceevent: Change to SPDX License format

2018-08-20T11:54:58Z

Replace the GPL text with SPDX tags in the tools/lib/traceevent files. Signed-off-by: Steven Rostedt Cc: Jiri Olsa Cc: Tzvetomir Stoyanov (VMware) Cc: Yordan Karadzhov (VMware) Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180816111015.125e0f25@gandalf.local.home Signed-off-by: Arnaldo Carvalho de Melo

Merge tag 'perf-core-for-mingo-4.19-20180815' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

2018-08-18T11:11:51Z

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: kernel: - kallsyms, x86: Export addresses of PTI entry trampolines (Alexander Shishkin) - kallsyms: Simplify update_iter_mod() (Adrian Hunter) - x86: Add entry trampolines to kcore (Adrian Hunter) Hardware tracing: - Fix auxtrace queue resize (Adrian Hunter) Arch specific: - Fix uninitialized ARM SPE record error variable (Kim Phillips) - Fix trace event post-processing in powerpc (Sandipan Das) Build: - Fix check-headers.sh AND list path of execution (Alexander Kapshuk) - Remove -mcet and -fcf-protection when building the python binding with older clang versions (Arnaldo Carvalho de Melo) - Make check-headers.sh check based on kernel dir (Jiri Olsa) - Move syscall_64.tbl check into check-headers.sh (Jiri Olsa) Infrastructure: - Check for null when copying nsinfo. (Benno Evers) Libraries: - Rename libtraceevent prefixes, prep work for making it a shared library generaly available (Tzvetomir Stoyanov (VMware)) Signed-off-by: Arnaldo Carvalho de Melo

tools lib traceevent: Rename static variables and functions in event-parse.c

2018-08-13T18:37:26Z

In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes static variables and functions in event-parse.c: pevent_func_params, __pevent_parse_format, __pevent_parse_event, pevent_error_str, pevent_search_event Signed-off-by: Tzvetomir Stoyanov (VMware) Cc: Andrew Morton Cc: Peter Zijlstra Cc: Yordan Karadzhov (VMware) Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180703.575392642@goodmis.org Signed-off-by: Steven Rostedt Signed-off-by: Arnaldo Carvalho de Melo

tools lib traceevent: Rename various pevent APIs

2018-08-13T18:36:43Z

In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_reset_function_resolver, pevent_strerror, pevent_list_events, pevent_event_common_fields, pevent_event_fields, pevent_ref, pevent_unref Signed-off-by: Tzvetomir Stoyanov (VMware) Cc: Andrew Morton Cc: Peter Zijlstra Cc: Yordan Karadzhov (VMware) Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180703.426198047@goodmis.org Signed-off-by: Steven Rostedt Signed-off-by: Arnaldo Carvalho de Melo

tools lib traceevent: Rename internal parser related APIs

2018-08-13T18:35:58Z

In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_buffer_init, pevent_read_token, pevent_free_token, pevent_peek_char, pevent_get_input_buf, pevent_get_input_buf_ptr Signed-off-by: Tzvetomir Stoyanov (VMware) Cc: Andrew Morton Cc: Peter Zijlstra Cc: Yordan Karadzhov (VMware) Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180703.275281085@goodmis.org Signed-off-by: Steven Rostedt Signed-off-by: Arnaldo Carvalho de Melo

tools lib traceevent: Rename various pevent get/set/is APIs

2018-08-13T18:35:02Z

In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_pid_is_registered, pevent_get_cpus, pevent_set_cpus, pevent_is_file_bigendian, pevent_is_host_bigendian, pevent_is_latency_format, pevent_set_latency_format Signed-off-by: Tzvetomir Stoyanov (VMware) Cc: Andrew Morton Cc: Peter Zijlstra Cc: Yordan Karadzhov (VMware) Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180703.114110715@goodmis.org Signed-off-by: Steven Rostedt Signed-off-by: Arnaldo Carvalho de Melo

tools lib traceevent: Rename pevent_find_* APIs

2018-08-13T18:31:28Z

In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. That prefix will be "tep_" and not "pevent_". This changes APIs: pevent_find_function, pevent_find_function_address, pevent_find_event_by_name, pevent_find_event_by_record Signed-off-by: Tzvetomir Stoyanov (VMware) Cc: Andrew Morton Cc: Peter Zijlstra Cc: Yordan Karadzhov (VMware) Cc: linux-trace-devel@vger.kernel.org Link: http://lkml.kernel.org/r/20180808180702.966965051@goodmis.org Signed-off-by: Steven Rostedt Signed-off-by: Arnaldo Carvalho de Melo