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author | 2017-07-18 20:13:15 +0800 | |
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committer | 2017-07-18 23:14:42 -0300 | |
commit | b851dd49868e295e18c5d72fc3bad85ff1c444b1 (patch) | |
tree | 455626df444b2d4adf4987c46c66dff91193fa40 /tools/perf/util/callchain.c | |
parent | perf report: Show branch type statistics for stdio mode (diff) | |
download | linux-b851dd49868e295e18c5d72fc3bad85ff1c444b1.tar.gz linux-b851dd49868e295e18c5d72fc3bad85ff1c444b1.tar.bz2 linux-b851dd49868e295e18c5d72fc3bad85ff1c444b1.zip |
perf report: Show branch type in callchain entry
Show branch type in callchain entry. The branch type is printed
with other LBR information (such as cycles/abort/...).
For example:
perf record -g -j any,save_type
perf report --branch-history --stdio --no-children
38.50% div.c:45 [.] main div
|
---main div.c:42 (RET CROSS_2M cycles:2)
compute_flag div.c:28 (cycles:2)
compute_flag div.c:27 (RET CROSS_2M cycles:1)
rand rand.c:28 (cycles:1)
rand rand.c:28 (RET CROSS_2M cycles:1)
__random random.c:298 (cycles:1)
__random random.c:297 (COND_BWD CROSS_2M cycles:1)
__random random.c:295 (cycles:1)
__random random.c:295 (COND_BWD CROSS_2M cycles:1)
__random random.c:295 (cycles:1)
__random random.c:295 (RET CROSS_2M cycles:9)
Change log
v6: Remove the branch_type_str() since it's moved to branch.c.
v5: Rewrite the branch info print code in util/callchain.c.
v4: Comparing to previous version, the major changes are:
Signed-off-by: Yao Jin <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1500379995-6449-8-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/callchain.c')
-rw-r--r-- | tools/perf/util/callchain.c | 38 |
1 files changed, 29 insertions, 9 deletions
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c index 917f4d6510ae..22d413ae6025 100644 --- a/tools/perf/util/callchain.c +++ b/tools/perf/util/callchain.c @@ -23,6 +23,7 @@ #include "sort.h" #include "machine.h" #include "callchain.h" +#include "branch.h" #define CALLCHAIN_PARAM_DEFAULT \ .mode = CHAIN_GRAPH_ABS, \ @@ -571,6 +572,11 @@ fill_node(struct callchain_node *node, struct callchain_cursor *cursor) call->cycles_count = cursor_node->branch_flags.cycles; call->iter_count = cursor_node->nr_loop_iter; call->samples_count = cursor_node->samples; + + branch_type_count(&call->brtype_stat, + &cursor_node->branch_flags, + cursor_node->branch_from, + cursor_node->ip); } list_add_tail(&call->list, &node->val); @@ -688,6 +694,11 @@ static enum match_result match_chain(struct callchain_cursor_node *node, cnode->cycles_count += node->branch_flags.cycles; cnode->iter_count += node->nr_loop_iter; cnode->samples_count += node->samples; + + branch_type_count(&cnode->brtype_stat, + &node->branch_flags, + node->branch_from, + node->ip); } return MATCH_EQ; @@ -922,7 +933,7 @@ merge_chain_branch(struct callchain_cursor *cursor, list_for_each_entry_safe(list, next_list, &src->val, list) { callchain_cursor_append(cursor, list->ip, list->ms.map, list->ms.sym, - false, NULL, 0, 0); + false, NULL, 0, 0, 0); list_del(&list->list); map__zput(list->ms.map); free(list); @@ -962,7 +973,7 @@ int callchain_merge(struct callchain_cursor *cursor, int callchain_cursor_append(struct callchain_cursor *cursor, u64 ip, struct map *map, struct symbol *sym, bool branch, struct branch_flags *flags, - int nr_loop_iter, int samples) + int nr_loop_iter, int samples, u64 branch_from) { struct callchain_cursor_node *node = *cursor->last; @@ -986,6 +997,7 @@ int callchain_cursor_append(struct callchain_cursor *cursor, memcpy(&node->branch_flags, flags, sizeof(struct branch_flags)); + node->branch_from = branch_from; cursor->nr++; cursor->last = &node->next; @@ -1235,14 +1247,19 @@ static int count_float_printf(int idx, const char *str, float value, char *bf, i static int counts_str_build(char *bf, int bfsize, u64 branch_count, u64 predicted_count, u64 abort_count, u64 cycles_count, - u64 iter_count, u64 samples_count) + u64 iter_count, u64 samples_count, + struct branch_type_stat *brtype_stat) { u64 cycles; - int printed = 0, i = 0; + int printed, i = 0; if (branch_count == 0) return scnprintf(bf, bfsize, " (calltrace)"); + printed = branch_type_str(brtype_stat, bf, bfsize); + if (printed) + i++; + if (predicted_count < branch_count) { printed += count_float_printf(i++, "predicted", predicted_count * 100.0 / branch_count, @@ -1278,13 +1295,14 @@ static int counts_str_build(char *bf, int bfsize, static int callchain_counts_printf(FILE *fp, char *bf, int bfsize, u64 branch_count, u64 predicted_count, u64 abort_count, u64 cycles_count, - u64 iter_count, u64 samples_count) + u64 iter_count, u64 samples_count, + struct branch_type_stat *brtype_stat) { - char str[128]; + char str[256]; counts_str_build(str, sizeof(str), branch_count, predicted_count, abort_count, cycles_count, - iter_count, samples_count); + iter_count, samples_count, brtype_stat); if (fp) return fprintf(fp, "%s", str); @@ -1316,7 +1334,8 @@ int callchain_list_counts__printf_value(struct callchain_node *node, return callchain_counts_printf(fp, bf, bfsize, branch_count, predicted_count, abort_count, - cycles_count, iter_count, samples_count); + cycles_count, iter_count, samples_count, + &clist->brtype_stat); } static void free_callchain_node(struct callchain_node *node) @@ -1441,7 +1460,8 @@ int callchain_cursor__copy(struct callchain_cursor *dst, rc = callchain_cursor_append(dst, node->ip, node->map, node->sym, node->branch, &node->branch_flags, - node->nr_loop_iter, node->samples); + node->nr_loop_iter, node->samples, + node->branch_from); if (rc) break; |