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linux/tools/perf/jvmti
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Nick Gasson 959f8ed4c1 perf jvmti: Do not report error when missing debug information 
If the Java sources are compiled with -g:none to disable debug
information the perf JVMTI plugin reports a lot of errors like:

  java: GetLineNumberTable failed with JVMTI_ERROR_ABSENT_INFORMATION
  java: GetLineNumberTable failed with JVMTI_ERROR_ABSENT_INFORMATION
  java: GetLineNumberTable failed with JVMTI_ERROR_ABSENT_INFORMATION
  java: GetLineNumberTable failed with JVMTI_ERROR_ABSENT_INFORMATION
  java: GetLineNumberTable failed with JVMTI_ERROR_ABSENT_INFORMATION

Instead if GetLineNumberTable returns JVMTI_ERROR_ABSENT_INFORMATION
simply skip emitting line number information for that method. Unlike the
previous patch these errors don't affect the jitdump generation, they
just generate a lot of noise.

Similarly for native methods which also don't have line tables.

Signed-off-by: Nick Gasson <nick.gasson@arm.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Tested-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200427061520.24905-3-nick.gasson@arm.com
[ Moved || operator to the end of the line, not at the start of 2nd if condition ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-28 10:03:28 -03:00
..
Build perf jvmti: Link against tools/lib/ctype.h to have weak strlcpy() 2019-10-15 11:47:38 -03:00
jvmti_agent.c tools build: Check if gettid() is available before providing helper 2019-06-17 15:57:19 -03:00
jvmti_agent.h perf jvmti: Generate correct debug information for inlined code 2017-12-18 11:54:08 -03:00
libjvmti.c perf jvmti: Do not report error when missing debug information 2020-05-28 10:03:28 -03:00