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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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71ad0f5e4e
This brings the support for DWARF cfi unwinding on perf post processing. Call frame informations are retrieved and then passed to libunwind that requests memory and register content from the applications. Adding unwind object to handle the user stack backtrace based on the user register values and user stack dump. The unwind object access the libunwind via remote interface and provides to it all the necessary data to unwind the stack. The unwind interface provides following function: unwind__get_entries And callback (specified in above function) to retrieve the backtrace entries: typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg); Signed-off-by: Jiri Olsa <jolsa@redhat.com> Original-patch-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: "Frank Ch. Eigler" <fche@redhat.com> Cc: Arun Sharma <asharma@fb.com> Cc: Benjamin Redelings <benjamin.redelings@nescent.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Robert Richter <robert.richter@amd.com> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Ulrich Drepper <drepper@gmail.com> Link: http://lkml.kernel.org/r/1344345647-11536-12-git-send-email-jolsa@redhat.com [ Replaced use of perf_session by usage of perf_evsel ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
109 lines
3.1 KiB
C
109 lines
3.1 KiB
C
#ifndef _PERF_UTIL_TRACE_EVENT_H
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#define _PERF_UTIL_TRACE_EVENT_H
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#include "parse-events.h"
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#include "event-parse.h"
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#include "session.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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extern int header_page_size_size;
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extern int header_page_ts_size;
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extern int header_page_data_offset;
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extern bool latency_format;
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extern struct pevent *perf_pevent;
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enum {
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RINGBUF_TYPE_PADDING = 29,
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RINGBUF_TYPE_TIME_EXTEND = 30,
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RINGBUF_TYPE_TIME_STAMP = 31,
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};
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#ifndef TS_SHIFT
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#define TS_SHIFT 27
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#endif
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int bigendian(void);
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struct pevent *read_trace_init(int file_bigendian, int host_bigendian);
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void print_trace_event(struct pevent *pevent, int cpu, void *data, int size);
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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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void print_event(struct pevent *pevent, int cpu, void *data, int size,
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unsigned long long nsecs, char *comm);
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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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struct pevent_record *trace_peek_data(struct pevent *pevent, int cpu);
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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 *raw_field_ptr(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 pevent **pevent, bool repipe);
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int trace_parse_common_type(struct pevent *pevent, void *data);
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int trace_parse_common_pid(struct pevent *pevent, void *data);
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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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struct pevent_record *trace_read_data(struct pevent *pevent, int cpu);
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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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void 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 (*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 machine *machine,
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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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