kernel/linux.git/tools/perf/util/Build, branch v4.6.4

perf llvm: Use realpath to canonicalize paths

2016-03-23T20:39:19+00:00

To kill the last user of make_nonrelative_path(), that gets ditched, one more panicking function killed. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-3hu56rvyh4q5gxogovb6ko8a@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf jitdump: Build only on supported archs

2016-03-10T19:33:19+00:00

Build jitdump only on architectures defined in util/genelf.h file, to avoid breaking the build on such arches. Signed-off-by: Jiri Olsa Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Andi Kleen Cc: Borislav Petkov Cc: Colin Ian King Cc: David Ahern Cc: Davidlohr Bueso Cc: He Kuang Cc: Mel Gorman Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Steven Rostedt Cc: Wang Nan Link: http://lkml.kernel.org/r/20160310164113.GA11357@krava.redhat.com Signed-off-by: Arnaldo Carvalho de Melo

perf jitdump: DWARF is also needed

2016-03-09T13:29:03+00:00

While building on a Docker container for ubuntu and installing package by package one ends up with: MKDIR /tmp/build/util/ CC /tmp/build/util/genelf.o util/genelf.c:22:19: fatal error: dwarf.h: No such file or directory #include ^ compilation terminated. mv: cannot stat '/tmp/build/util/.genelf.o.tmp': No such file or directory Because the jitdump code needs the DWARF related development packages to be installed. So make it dependent on that so that the build can succeed without jitdump support. Cc: Adrian Hunter Cc: Stephane Eranian Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-le498robnmxd40237wej3w62@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add monitored events array

2016-02-23T15:11:06+00:00

It will ease up configuration of memory events and addition of other memory events in following patches. Signed-off-by: Jiri Olsa Cc: Andi Kleen Cc: David Ahern Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1455525293-8671-5-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf jit: add source line info support

2016-02-05T15:33:09+00:00

This patch adds source line information support to perf for jitted code. The source line info must be emitted by the runtime, such as JVMTI. Perf injects extract the source line info from the jitdump file and adds the corresponding .debug_lines section in the ELF image generated for each jitted function. The source line enables matching any address in the profile with a source file and line number. The improvement is visible in perf annotate with the source code displayed alongside the assembly code. The dwarf code leverages the support from OProfile which is also released under GPLv2. Copyright 2007 OProfile authors. Signed-off-by: Stephane Eranian Cc: Adrian Hunter Cc: Andi Kleen Cc: Carl Love Cc: David Ahern Cc: Jiri Olsa Cc: John McCutchan Cc: Namhyung Kim Cc: Pawel Moll Cc: Peter Zijlstra Cc: Sonny Rao Cc: Sukadev Bhattiprolu Link: http://lkml.kernel.org/r/1448874143-7269-5-git-send-email-eranian@google.com Signed-off-by: Arnaldo Carvalho de Melo

perf inject: Add jitdump mmap injection support

2016-02-05T12:46:45+00:00

This patch adds a --jit/-j option to perf inject. This options injects MMAP records into the perf.data file to cover the jitted code mmaps. It also emits ELF images for each function in the jidump file. Those images are created where the jitdump file is. The MMAP records point to that location as well. Typical flow: $ perf record -k mono -- java -agentpath:libpjvmti.so java_class $ perf inject --jit -i perf.data -o perf.data.jitted $ perf report -i perf.data.jitted Note that jitdump.h support is not limited to Java, it works with any jitted environment modified to emit the jitdump file format, include those where code can be jitted multiple times and moved around. The jitdump.h format is adapted from the Oprofile project. The genelf.c (ELF binary generation) depends on MD5 hash encoding for the buildid. To enable this, libssl-dev must be installed. If not, then genelf.c defaults to using urandom to generate the buildid, which is not ideal. The Makefile auto-detects the presence on libssl-dev. This version mmaps the jitdump file to create a marker MMAP record in the perf.data file. The marker is used to detect jitdump and cause perf inject to inject the jitted mmaps and generate ELF images for jitted functions. In V8, the following fixes and changes were made among other things: - the jidump header format include a new flags field to be used to carry information about the configuration of the runtime agent. Contributed by: Adrian Hunter - Fix mmap pgoff: MMAP event pgoff must be the offset within the ELF file at which the code resides. Contributed by: Adrian Hunter - Fix ELF virtual addresses: perf tools expect the ELF virtual addresses of dynamic objects to match the file offset. Contributed by: Adrian Hunter - JIT MMAP injection does not obey finished_round semantics. JIT MMAP injection injects all MMAP events in one go, so it does not obey finished_round semantics, so drop the finished_round events from the output perf.data file. Contributed by: Adrian Hunter Signed-off-by: Stephane Eranian Cc: Adrian Hunter Cc: Andi Kleen Cc: Carl Love Cc: David Ahern Cc: Jiri Olsa Cc: John McCutchan Cc: Namhyung Kim Cc: Pawel Moll Cc: Peter Zijlstra Cc: Sonny Rao Cc: Sukadev Bhattiprolu Link: http://lkml.kernel.org/r/1448874143-7269-3-git-send-email-eranian@google.com [ Moved inject.build_ids ordering bits to a separate patch, fixed the NO_LIBELF=1 build ] Signed-off-by: Arnaldo Carvalho de Melo

perf symbols: add Java demangling support

2016-02-05T12:46:45+00:00

Add Java function descriptor demangling support. Something bfd cannot do. Use the JAVA_DEMANGLE_NORET flag to avoid decoding the return type of functions. Signed-off-by: Stephane Eranian Cc: Adrian Hunter Cc: Andi Kleen Cc: Carl Love Cc: David Ahern Cc: Jiri Olsa Cc: John McCutchan Cc: Namhyung Kim Cc: Pawel Moll Cc: Peter Zijlstra Cc: Sonny Rao Cc: Sukadev Bhattiprolu Link: http://lkml.kernel.org/r/1448874143-7269-2-git-send-email-eranian@google.com Signed-off-by: Arnaldo Carvalho de Melo

tools lib: Move bitmap.[ch] from tools/perf/ to tools/{lib,include}/

2016-01-08T15:35:46+00:00

So that lib/find_bit.c doesn't requires anything inside tools/perf/ Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: George Spelvin Cc: Namhyung Kim Cc: Rasmus Villemoes Cc: Wang Nan Cc: Yury Norov Link: http://lkml.kernel.org/n/tip-7lxe7jgohaac5faodndhdmvk@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

tools lib: Move find_next_bit.c to tools/lib/

2016-01-08T15:35:35+00:00

The commit that introduced it should've moved it to the same place, plus the 'tools/' prefix, but instead moved it to a bogus tools/lib/util/ directory, being the only file there. Move it to tools/lib/find_bit.c, picking the name for the file where these routines live since: 8f6f19dd5143 ("lib: move find_last_bit to lib/find_next_bit.c") Next step is to make tools/lib/find_bit.c to differ from lib/find_bit.c just in removing what is not used by tools/. Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: George Spelvin Cc: Namhyung Kim Cc: Rasmus Villemoes Cc: Wang Nan Cc: Yury Norov Link: http://lkml.kernel.org/n/tip-p391cex5mqvahp4pwrton87n@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf subcmd: Create subcmd library

2015-12-17T17:27:14+00:00

Move the subcommand-related files from perf to a new library named libsubcmd.a. Since we're moving files anyway, go ahead and rename 'exec_cmd.*' to 'exec-cmd.*' to be consistent with the naming of all the other files. Signed-off-by: Josh Poimboeuf Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/c0a838d4c878ab17fee50998811612b2281355c1.1450193761.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo