linux-dev/tools/perf/jvmti/Build, branch master

perf jvmti: Link against tools/lib/ctype.h to have weak strlcpy()

2019-10-15T14:47:38Z

The build of file libperf-jvmti.so succeeds but the resulting object fails to load: # ~/linux/tools/perf/perf record -k mono -- java \ -XX:+PreserveFramePointer \ -agentpath:/root/linux/tools/perf/libperf-jvmti.so \ hog 100000 123450 Error occurred during initialization of VM Could not find agent library /root/linux/tools/perf/libperf-jvmti.so in absolute path, with error: /root/linux/tools/perf/libperf-jvmti.so: undefined symbol: _ctype Add the missing _ctype symbol into the build script. Fixes: 79743bc927f6 ("perf jvmti: Link against tools/lib/string.o to have weak strlcpy()") Signed-off-by: Thomas Richter Cc: Heiko Carstens Cc: Vasily Gorbik Link: http://lore.kernel.org/lkml/20191008093841.59387-1-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo

perf jvmti: Link against tools/lib/string.o to have weak strlcpy()

2019-09-20T12:18:45Z

That is needed in systems such some S/390 distros. $ readelf -s /tmp/build/perf/jvmti/jvmti-in.o | grep strlcpy 452: 0000000000002990 125 FUNC WEAK DEFAULT 119 strlcpy $ Thanks to Jiri Olsa for fixing up my initial stab at this, I forgot how Makefiles are picky about spaces versus tabs. Reported-by: Thomas Richter Cc: Adrian Hunter Cc: Andreas Krebbel Cc: Jiri Olsa Cc: Namhyung Kim Cc: Sergey Melnikov Link: https://lkml.kernel.org/n/tip-x8vg9sffgb2t1tzqmhkrulh7@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf jvmti: Plug compilation into perf build

2016-11-14T15:42:47Z

Compile jvmti agent as part of the perf build. The agent library is called libperf-jvmti.so and is installed in default place together with other files: $ make libperf-jvmti.so BUILD: Doing 'make -j4' parallel build ... CC jvmti/libjvmti.o CC jvmti/jvmti_agent.o LD jvmti/jvmti-in.o LINK libperf-jvmti.so $ make DESTDIR=/tmp/krava/ install-bin ... $ find /tmp/krava/ | grep libperf /tmp/krava/lib64/libperf-jvmti.so /tmp/krava/lib64/libperf-gtk.so Signed-off-by: Jiri Olsa Tested-by: Arnaldo Carvalho de Melo Tested-by: Stephane Eranian Cc: Andi Kleen Cc: David Ahern Cc: Namhyung Kim Cc: Peter Zijlstra Cc: William Cohen Link: http://lkml.kernel.org/r/1478093749-5602-4-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo