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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>
150 lines
4.4 KiB
C
150 lines
4.4 KiB
C
#ifndef __PERF_SESSION_H
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#define __PERF_SESSION_H
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#include "hist.h"
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#include "event.h"
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#include "header.h"
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#include "symbol.h"
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#include "thread.h"
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#include <linux/rbtree.h>
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#include "../../../include/linux/perf_event.h"
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struct sample_queue;
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struct ip_callchain;
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struct thread;
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struct ordered_samples {
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u64 last_flush;
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u64 next_flush;
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u64 max_timestamp;
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struct list_head samples;
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struct list_head sample_cache;
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struct list_head to_free;
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struct sample_queue *sample_buffer;
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struct sample_queue *last_sample;
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int sample_buffer_idx;
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unsigned int nr_samples;
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};
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struct perf_session {
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struct perf_header header;
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unsigned long size;
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unsigned long mmap_window;
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struct machine host_machine;
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struct rb_root machines;
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struct perf_evlist *evlist;
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struct pevent *pevent;
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/*
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* FIXME: Need to split this up further, we need global
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* stats + per event stats. 'perf diff' also needs
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* to properly support multiple events in a single
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* perf.data file.
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*/
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struct hists hists;
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int fd;
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bool fd_pipe;
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bool repipe;
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int cwdlen;
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char *cwd;
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struct ordered_samples ordered_samples;
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char filename[1];
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};
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struct perf_tool;
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struct perf_session *perf_session__new(const char *filename, int mode,
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bool force, bool repipe,
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struct perf_tool *tool);
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void perf_session__delete(struct perf_session *self);
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void perf_event_header__bswap(struct perf_event_header *self);
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int __perf_session__process_events(struct perf_session *self,
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u64 data_offset, u64 data_size, u64 size,
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struct perf_tool *tool);
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int perf_session__process_events(struct perf_session *self,
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struct perf_tool *tool);
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int perf_session__resolve_callchain(struct perf_session *self, struct perf_evsel *evsel,
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struct thread *thread,
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struct ip_callchain *chain,
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struct symbol **parent);
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struct branch_info *machine__resolve_bstack(struct machine *self,
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struct thread *thread,
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struct branch_stack *bs);
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bool perf_session__has_traces(struct perf_session *self, const char *msg);
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void mem_bswap_64(void *src, int byte_size);
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void mem_bswap_32(void *src, int byte_size);
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void perf_event__attr_swap(struct perf_event_attr *attr);
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int perf_session__create_kernel_maps(struct perf_session *self);
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void perf_session__set_id_hdr_size(struct perf_session *session);
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void perf_session__remove_thread(struct perf_session *self, struct thread *th);
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static inline
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struct machine *perf_session__find_host_machine(struct perf_session *self)
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{
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return &self->host_machine;
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}
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static inline
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struct machine *perf_session__find_machine(struct perf_session *self, pid_t pid)
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{
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if (pid == HOST_KERNEL_ID)
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return &self->host_machine;
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return machines__find(&self->machines, pid);
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}
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static inline
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struct machine *perf_session__findnew_machine(struct perf_session *self, pid_t pid)
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{
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if (pid == HOST_KERNEL_ID)
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return &self->host_machine;
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return machines__findnew(&self->machines, pid);
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}
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static inline
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void perf_session__process_machines(struct perf_session *self,
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struct perf_tool *tool,
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machine__process_t process)
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{
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process(&self->host_machine, tool);
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return machines__process(&self->machines, process, tool);
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}
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struct thread *perf_session__findnew(struct perf_session *self, pid_t pid);
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size_t perf_session__fprintf(struct perf_session *self, FILE *fp);
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size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp);
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size_t perf_session__fprintf_dsos_buildid(struct perf_session *self,
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FILE *fp, bool with_hits);
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size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp);
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struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
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unsigned int type);
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void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
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struct perf_sample *sample, struct machine *machine,
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int print_sym, int print_dso, int print_symoffset);
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int perf_session__cpu_bitmap(struct perf_session *session,
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const char *cpu_list, unsigned long *cpu_bitmap);
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void perf_session__fprintf_info(struct perf_session *s, FILE *fp, bool full);
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struct perf_evsel_str_handler;
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int __perf_session__set_tracepoints_handlers(struct perf_session *session,
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const struct perf_evsel_str_handler *assocs,
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size_t nr_assocs);
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#define perf_session__set_tracepoints_handlers(session, array) \
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__perf_session__set_tracepoints_handlers(session, array, ARRAY_SIZE(array))
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#endif /* __PERF_SESSION_H */
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