perf report: Show inline stack for stdio mode
If the address belongs to an inlined function, the source information
back to the first non-inlined function will be printed.
For example:
1. Show inlined function name
perf report --stdio -g function --inline
0.69% 0.00% inline ld-2.23.so [.] dl_main
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---dl_main
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--0.56%--_dl_relocate_object
_dl_relocate_object (inline)
elf_dynamic_do_Rela (inline)
2. Show the file/line information
perf report --stdio -g address --inline
0.69% 0.00% inline ld-2.23.so [.] _dl_start_user
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---_dl_start_user .:0
_dl_start rtld.c:307
/build/glibc-GKVZIf/glibc-2.23/elf/rtld.c:413 (inline)
_dl_sysdep_start dl-sysdep.c:250
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--0.56%--dl_main rtld.c:2076
Committer tests:
# perf record --call-graph dwarf ~/bin/perf stat usleep 1
Performance counter stats for 'usleep 1':
0.443020 task-clock (msec) # 0.449 CPUs utilized
1 context-switches # 0.002 M/sec
0 cpu-migrations # 0.000 K/sec
52 page-faults # 0.117 M/sec
1,049,423 cycles # 2.369 GHz
801,456 instructions # 0.76 insn per cycle
155,609 branches # 351.246 M/sec
7,026 branch-misses # 4.52% of all branches
0.000987570 seconds time elapsed
[ perf record: Woken up 2 times to write data ]
[ perf record: Captured and wrote 0.553 MB perf.data (66 samples) ]
# perf report --stdio --inline fs__get_mountpoint
<SNIP>
1.73% 0.00% perf perf [.] fs__get_mountpoint
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---fs__get_mountpoint
fs__get_mountpoint (inline)
fs__check_mounts (inline)
__statfs
entry_SYSCALL_64
sys_statfs
SYSC_statfs
user_statfs
user_path_at_empty
filename_lookup
path_lookupat
link_path_walk
inode_permission
__inode_permission
kernfs_iop_permission
kernfs_refresh_inode
security_inode_notifysecctx
selinux_inode_notifysecctx
selinux_inode_setsecurity
security_context_to_sid
security_context_to_sid_core
string_to_context_struct
symcmp
Signed-off-by: Yao Jin <yao.jin@linux.intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Milian Wolff <milian.wolff@kdab.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@intel.com>
Link: http://lkml.kernel.org/r/1490474069-15823-5-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jin Yao
committed by
Arnaldo Carvalho de Melo
Arnaldo Carvalho de Melo
parent
f3a60646cc
commit
0db64dd060
@@ -17,6 +17,66 @@ static size_t callchain__fprintf_left_margin(FILE *fp, int left_margin)
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return ret;
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}
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static size_t inline__fprintf(struct map *map, u64 ip, int left_margin,
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int depth, int depth_mask, FILE *fp)
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{
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struct dso *dso;
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struct inline_node *node;
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struct inline_list *ilist;
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int ret = 0, i;
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if (map == NULL)
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return 0;
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dso = map->dso;
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if (dso == NULL)
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return 0;
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if (dso->kernel != DSO_TYPE_USER)
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return 0;
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node = dso__parse_addr_inlines(dso,
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map__rip_2objdump(map, ip));
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if (node == NULL)
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return 0;
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list_for_each_entry(ilist, &node->val, list) {
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if ((ilist->filename != NULL) || (ilist->funcname != NULL)) {
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ret += callchain__fprintf_left_margin(fp, left_margin);
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for (i = 0; i < depth; i++) {
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if (depth_mask & (1 << i))
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ret += fprintf(fp, "|");
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else
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ret += fprintf(fp, " ");
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ret += fprintf(fp, " ");
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}
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if (callchain_param.key == CCKEY_ADDRESS) {
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if (ilist->filename != NULL)
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ret += fprintf(fp, "%s:%d (inline)",
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ilist->filename,
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ilist->line_nr);
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else
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ret += fprintf(fp, "??");
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} else if (ilist->funcname != NULL)
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ret += fprintf(fp, "%s (inline)",
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ilist->funcname);
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else if (ilist->filename != NULL)
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ret += fprintf(fp, "%s:%d (inline)",
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ilist->filename,
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ilist->line_nr);
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else
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ret += fprintf(fp, "??");
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ret += fprintf(fp, "\n");
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}
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}
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inline_node__delete(node);
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return ret;
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}
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static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask,
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int left_margin)
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{
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@@ -78,6 +138,10 @@ static size_t ipchain__fprintf_graph(FILE *fp, struct callchain_node *node,
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fputs(str, fp);
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fputc('\n', fp);
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free(alloc_str);
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if (symbol_conf.inline_name)
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ret += inline__fprintf(chain->ms.map, chain->ip,
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left_margin, depth, depth_mask, fp);
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return ret;
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}
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@@ -229,6 +293,7 @@ static size_t callchain__fprintf_graph(FILE *fp, struct rb_root *root,
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if (!i++ && field_order == NULL &&
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sort_order && !prefixcmp(sort_order, "sym"))
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continue;
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if (!printed) {
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ret += callchain__fprintf_left_margin(fp, left_margin);
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ret += fprintf(fp, "|\n");
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@@ -251,6 +316,13 @@ static size_t callchain__fprintf_graph(FILE *fp, struct rb_root *root,
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if (++entries_printed == callchain_param.print_limit)
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break;
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if (symbol_conf.inline_name)
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ret += inline__fprintf(chain->ms.map,
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chain->ip,
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left_margin,
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0, 0,
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fp);
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}
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root = &cnode->rb_root;
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}
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@@ -529,6 +601,8 @@ static int hist_entry__fprintf(struct hist_entry *he, size_t size,
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bool use_callchain)
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{
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int ret;
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int callchain_ret = 0;
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int inline_ret = 0;
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struct perf_hpp hpp = {
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.buf = bf,
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.size = size,
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@@ -547,7 +621,16 @@ static int hist_entry__fprintf(struct hist_entry *he, size_t size,
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ret = fprintf(fp, "%s\n", bf);
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if (use_callchain)
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ret += hist_entry_callchain__fprintf(he, total_period, 0, fp);
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callchain_ret = hist_entry_callchain__fprintf(he, total_period,
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0, fp);
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if (callchain_ret == 0 && symbol_conf.inline_name) {
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inline_ret = inline__fprintf(he->ms.map, he->ip, 0, 0, 0, fp);
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ret += inline_ret;
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if (inline_ret > 0)
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ret += fprintf(fp, "\n");
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} else
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ret += callchain_ret;
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return ret;
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}
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