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| author | Nick Gasson <nick.gasson@arm.com> | 2020-04-27 14:15:14 +0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-05-28 10:03:28 -0300 |
| commit | 953e92402a523102899d15f0083a508006220859 (patch) | |
| tree | 892d9346ad8b1676f272158838e58800c47dd649 /tools/perf/jvmti | |
| parent | 85afd35575a3c1a3a905722dde5ee70b49282e70 (diff) | |
| download | lwn-953e92402a523102899d15f0083a508006220859.tar.gz lwn-953e92402a523102899d15f0083a508006220859.zip | |
perf jvmti: Fix jitdump for methods without debug info
If a Java class is compiled with -g:none to omit debug information, the
JVMTI plugin won't write jitdump entries for any method in this class
and prints a lot of errors like:
java: GetSourceFileName failed with JVMTI_ERROR_ABSENT_INFORMATION
The call to GetSourceFileName is used to derive the file name `fn`, but
this value is not actually used since commit ca58d7e64bdf ("perf jvmti:
Generate correct debug information for inlined code") which moved the
file name lookup into fill_source_filenames(). So the call to
GetSourceFileName and related code can be safely removed.
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/20200427061520.24905-2-nick.gasson@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/jvmti')
| -rw-r--r-- | tools/perf/jvmti/libjvmti.c | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/tools/perf/jvmti/libjvmti.c b/tools/perf/jvmti/libjvmti.c index c441a34cb1c0..50ef524b5cd4 100644 --- a/tools/perf/jvmti/libjvmti.c +++ b/tools/perf/jvmti/libjvmti.c @@ -246,8 +246,6 @@ compiled_method_load_cb(jvmtiEnv *jvmti, char *class_sign = NULL; char *func_name = NULL; char *func_sign = NULL; - char *file_name = NULL; - char fn[PATH_MAX]; uint64_t addr = (uint64_t)(uintptr_t)code_addr; jvmtiError ret; int nr_lines = 0; /* in line_tab[] */ @@ -282,12 +280,6 @@ compiled_method_load_cb(jvmtiEnv *jvmti, } } - ret = (*jvmti)->GetSourceFileName(jvmti, decl_class, &file_name); - if (ret != JVMTI_ERROR_NONE) { - print_error(jvmti, "GetSourceFileName", ret); - goto error; - } - ret = (*jvmti)->GetClassSignature(jvmti, decl_class, &class_sign, NULL); if (ret != JVMTI_ERROR_NONE) { @@ -302,8 +294,6 @@ compiled_method_load_cb(jvmtiEnv *jvmti, goto error; } - copy_class_filename(class_sign, file_name, fn, PATH_MAX); - /* * write source line info record if we have it */ @@ -323,7 +313,6 @@ error: (*jvmti)->Deallocate(jvmti, (unsigned char *)func_name); (*jvmti)->Deallocate(jvmti, (unsigned char *)func_sign); (*jvmti)->Deallocate(jvmti, (unsigned char *)class_sign); - (*jvmti)->Deallocate(jvmti, (unsigned char *)file_name); free(line_tab); while (line_file_names && (nr_lines > 0)) { if (line_file_names[nr_lines - 1]) { |