959c2199d4
The python binding still doesn't provide symbol resolving facilities,
but the recent addition of the trace_event__register_resolver() function
made it add as a dependency the machine__resolve_kernel_addr() method,
that in turn drags all the symbol resolving code.
The problem:
[root@zoo ~]# perf test -v python
17: Try 'import perf' in python, checking link problems :
--- start ---
test child forked, pid 6853
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: /tmp/build/perf/python/perf.so: undefined symbol: machine__resolve_kernel_addr
test child finished with -1
---- end ----
Try 'import perf' in python, checking link problems: FAILED!
[root@zoo ~]#
Fix it by requiring this function to receive the resolver as a
parameter, just like pevent_register_function_resolver(), i.e. do
not explicitely refer to an object file not included in
tools/perf/util/python-ext-sources.
[root@zoo ~]# perf test python
17: Try 'import perf' in python, checking link problems : Ok
[root@zoo ~]#
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Fixes: c3168b0db9 ("perf symbols: Provide libtraceevent callback to resolve kernel symbols")
Link: http://lkml.kernel.org/n/tip-vxlhh95v2em9zdbgj3jm7xi5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
96 lines
2.7 KiB
C
96 lines
2.7 KiB
C
#ifndef _PERF_UTIL_TRACE_EVENT_H
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#define _PERF_UTIL_TRACE_EVENT_H
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#include <traceevent/event-parse.h>
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#include "parse-events.h"
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struct machine;
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struct perf_sample;
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union perf_event;
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struct perf_tool;
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struct thread;
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struct plugin_list;
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struct trace_event {
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struct pevent *pevent;
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struct plugin_list *plugin_list;
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};
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int trace_event__init(struct trace_event *t);
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void trace_event__cleanup(struct trace_event *t);
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int trace_event__register_resolver(struct machine *machine,
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pevent_func_resolver_t *func);
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struct event_format*
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trace_event__tp_format(const char *sys, const char *name);
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int bigendian(void);
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void event_format__fprintf(struct event_format *event,
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int cpu, void *data, int size, FILE *fp);
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void event_format__print(struct event_format *event,
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int cpu, void *data, int size);
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int parse_ftrace_file(struct pevent *pevent, char *buf, unsigned long size);
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int parse_event_file(struct pevent *pevent,
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char *buf, unsigned long size, char *sys);
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unsigned long long
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raw_field_value(struct event_format *event, const char *name, void *data);
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void parse_proc_kallsyms(struct pevent *pevent, char *file, unsigned int size);
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void parse_ftrace_printk(struct pevent *pevent, char *file, unsigned int size);
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ssize_t trace_report(int fd, struct trace_event *tevent, bool repipe);
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struct event_format *trace_find_next_event(struct pevent *pevent,
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struct event_format *event);
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unsigned long long read_size(struct event_format *event, void *ptr, int size);
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unsigned long long eval_flag(const char *flag);
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int read_tracing_data(int fd, struct list_head *pattrs);
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struct tracing_data {
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/* size is only valid if temp is 'true' */
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ssize_t size;
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bool temp;
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char temp_file[50];
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};
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struct tracing_data *tracing_data_get(struct list_head *pattrs,
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int fd, bool temp);
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int tracing_data_put(struct tracing_data *tdata);
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struct addr_location;
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struct perf_session;
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struct scripting_ops {
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const char *name;
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int (*start_script) (const char *script, int argc, const char **argv);
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int (*flush_script) (void);
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int (*stop_script) (void);
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void (*process_event) (union perf_event *event,
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struct perf_sample *sample,
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struct perf_evsel *evsel,
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struct addr_location *al);
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int (*generate_script) (struct pevent *pevent, const char *outfile);
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};
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int script_spec_register(const char *spec, struct scripting_ops *ops);
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void setup_perl_scripting(void);
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void setup_python_scripting(void);
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struct scripting_context {
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struct pevent *pevent;
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void *event_data;
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};
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int common_pc(struct scripting_context *context);
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int common_flags(struct scripting_context *context);
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int common_lock_depth(struct scripting_context *context);
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#endif /* _PERF_UTIL_TRACE_EVENT_H */
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