diff options
Diffstat (limited to 'tools/perf/util/machine.c')
| -rw-r--r-- | tools/perf/util/machine.c | 82 |
1 files changed, 67 insertions, 15 deletions
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index df85b9efd80f..9b33bef54581 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -1616,7 +1616,11 @@ static int add_callchain_ip(struct thread *thread, struct symbol **parent, struct addr_location *root_al, u8 *cpumode, - u64 ip) + u64 ip, + bool branch, + struct branch_flags *flags, + int nr_loop_iter, + int samples) { struct addr_location al; @@ -1668,7 +1672,8 @@ static int add_callchain_ip(struct thread *thread, if (symbol_conf.hide_unresolved && al.sym == NULL) return 0; - return callchain_cursor_append(cursor, al.addr, al.map, al.sym); + return callchain_cursor_append(cursor, al.addr, al.map, al.sym, + branch, flags, nr_loop_iter, samples); } struct branch_info *sample__resolve_bstack(struct perf_sample *sample, @@ -1757,7 +1762,9 @@ static int resolve_lbr_callchain_sample(struct thread *thread, /* LBR only affects the user callchain */ if (i != chain_nr) { struct branch_stack *lbr_stack = sample->branch_stack; - int lbr_nr = lbr_stack->nr, j; + int lbr_nr = lbr_stack->nr, j, k; + bool branch; + struct branch_flags *flags; /* * LBR callstack can only get user call chain. * The mix_chain_nr is kernel call chain @@ -1772,23 +1779,41 @@ static int resolve_lbr_callchain_sample(struct thread *thread, for (j = 0; j < mix_chain_nr; j++) { int err; + branch = false; + flags = NULL; + if (callchain_param.order == ORDER_CALLEE) { if (j < i + 1) ip = chain->ips[j]; - else if (j > i + 1) - ip = lbr_stack->entries[j - i - 2].from; - else + else if (j > i + 1) { + k = j - i - 2; + ip = lbr_stack->entries[k].from; + branch = true; + flags = &lbr_stack->entries[k].flags; + } else { ip = lbr_stack->entries[0].to; + branch = true; + flags = &lbr_stack->entries[0].flags; + } } else { - if (j < lbr_nr) - ip = lbr_stack->entries[lbr_nr - j - 1].from; + if (j < lbr_nr) { + k = lbr_nr - j - 1; + ip = lbr_stack->entries[k].from; + branch = true; + flags = &lbr_stack->entries[k].flags; + } else if (j > lbr_nr) ip = chain->ips[i + 1 - (j - lbr_nr)]; - else + else { ip = lbr_stack->entries[0].to; + branch = true; + flags = &lbr_stack->entries[0].flags; + } } - err = add_callchain_ip(thread, cursor, parent, root_al, &cpumode, ip); + err = add_callchain_ip(thread, cursor, parent, + root_al, &cpumode, ip, + branch, flags, 0, 0); if (err) return (err < 0) ? err : 0; } @@ -1813,6 +1838,7 @@ static int thread__resolve_callchain_sample(struct thread *thread, int i, j, err, nr_entries; int skip_idx = -1; int first_call = 0; + int nr_loop_iter; if (perf_evsel__has_branch_callstack(evsel)) { err = resolve_lbr_callchain_sample(thread, cursor, sample, parent, @@ -1868,14 +1894,37 @@ static int thread__resolve_callchain_sample(struct thread *thread, be[i] = branch->entries[branch->nr - i - 1]; } + nr_loop_iter = nr; nr = remove_loops(be, nr); + /* + * Get the number of iterations. + * It's only approximation, but good enough in practice. + */ + if (nr_loop_iter > nr) + nr_loop_iter = nr_loop_iter - nr + 1; + else + nr_loop_iter = 0; + for (i = 0; i < nr; i++) { - err = add_callchain_ip(thread, cursor, parent, root_al, - NULL, be[i].to); + if (i == nr - 1) + err = add_callchain_ip(thread, cursor, parent, + root_al, + NULL, be[i].to, + true, &be[i].flags, + nr_loop_iter, 1); + else + err = add_callchain_ip(thread, cursor, parent, + root_al, + NULL, be[i].to, + true, &be[i].flags, + 0, 0); + if (!err) err = add_callchain_ip(thread, cursor, parent, root_al, - NULL, be[i].from); + NULL, be[i].from, + true, &be[i].flags, + 0, 0); if (err == -EINVAL) break; if (err) @@ -1903,7 +1952,9 @@ check_calls: if (ip < PERF_CONTEXT_MAX) ++nr_entries; - err = add_callchain_ip(thread, cursor, parent, root_al, &cpumode, ip); + err = add_callchain_ip(thread, cursor, parent, + root_al, &cpumode, ip, + false, NULL, 0, 0); if (err) return (err < 0) ? err : 0; @@ -1919,7 +1970,8 @@ static int unwind_entry(struct unwind_entry *entry, void *arg) if (symbol_conf.hide_unresolved && entry->sym == NULL) return 0; return callchain_cursor_append(cursor, entry->ip, - entry->map, entry->sym); + entry->map, entry->sym, + false, NULL, 0, 0); } static int thread__resolve_callchain_unwind(struct thread *thread, |