[tip:perf/core] perf annotate: Align source and offset lines

From: tip-bot for Jiri Olsa
Date: Sat Nov 18 2017 - 03:28:07 EST

Commit-ID: f48e7c407050e5f5f53a0fa9a266d83b001dd356
Gitweb: https://git.kernel.org/tip/f48e7c407050e5f5f53a0fa9a266d83b001dd356
Author: Jiri Olsa <jolsa@xxxxxxxxxx>
AuthorDate: Wed, 11 Oct 2017 17:01:58 +0200
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 16 Nov 2017 14:49:50 -0300

perf annotate: Align source and offset lines

Align source with offset lines, which are more advanced, because of the
address column.

Before:
: static void *worker_thread(void *__tdata)
: {
0.00 : 48a971: push %rbp
0.00 : 48a972: mov %rsp,%rbp
0.00 : 48a975: sub $0x30,%rsp
0.00 : 48a979: mov %rdi,-0x28(%rbp)
0.00 : 48a97d: mov %fs:0x28,%rax
0.00 : 48a986: mov %rax,-0x8(%rbp)
0.00 : 48a98a: xor %eax,%eax
: struct thread_data *td = __tdata;
0.00 : 48a98c: mov -0x28(%rbp),%rax
0.00 : 48a990: mov %rax,-0x10(%rbp)
: int m = 0, i;
0.00 : 48a994: movl $0x0,-0x1c(%rbp)
: int ret;
:
: for (i = 0; i < loops; i++) {
0.00 : 48a99b: movl $0x0,-0x18(%rbp)

After:
: static void *worker_thread(void *__tdata)
: {
0.00 : 48a971: push %rbp
0.00 : 48a972: mov %rsp,%rbp
0.00 : 48a975: sub $0x30,%rsp
0.00 : 48a979: mov %rdi,-0x28(%rbp)
0.00 : 48a97d: mov %fs:0x28,%rax
0.00 : 48a986: mov %rax,-0x8(%rbp)
0.00 : 48a98a: xor %eax,%eax
: struct thread_data *td = __tdata;
0.00 : 48a98c: mov -0x28(%rbp),%rax
0.00 : 48a990: mov %rax,-0x10(%rbp)
: int m = 0, i;
0.00 : 48a994: movl $0x0,-0x1c(%rbp)
: int ret;
:
: for (i = 0; i < loops; i++) {
0.00 : 48a99b: movl $0x0,-0x18(%rbp)

It makes bigger different when displaying script sources, where the
comment lines looks oddly shifted from the lines which actually hold
code. I'll send script support separately.

Committer note:

Do not use a fixed column width for the addresses, as kernel ones se
more than 10 columns, look at the last offset and get the right width.

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20171011150158.11895-36-jolsa@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/annotate.c | 34 ++++++++++++++++++++++++----------
1 file changed, 24 insertions(+), 10 deletions(-)

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index cb065ca..eab4a8e 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -1092,15 +1092,14 @@ static void annotate__branch_printf(struct block_range *br, u64 addr)
}
}

-
-static int disasm_line__print(struct disasm_line *dl, u64 start)
+static int disasm_line__print(struct disasm_line *dl, u64 start, int addr_fmt_width)
{
s64 offset = dl->al.offset;
const u64 addr = start + offset;
struct block_range *br;

br = block_range__find(addr);
- color_fprintf(stdout, annotate__address_color(br), " %" PRIx64 ":", addr);
+ color_fprintf(stdout, annotate__address_color(br), " %*" PRIx64 ":", addr_fmt_width, addr);
color_fprintf(stdout, annotate__asm_color(br), "%s", dl->al.line);
annotate__branch_printf(br, addr);
return 0;
@@ -1109,7 +1108,7 @@ static int disasm_line__print(struct disasm_line *dl, u64 start)
static int
annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start,
struct perf_evsel *evsel, u64 len, int min_pcnt, int printed,
- int max_lines, struct annotation_line *queue)
+ int max_lines, struct annotation_line *queue, int addr_fmt_width)
{
struct disasm_line *dl = container_of(al, struct disasm_line, al);
static const char *prev_line;
@@ -1139,7 +1138,7 @@ annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start
if (queue == al)
break;
annotation_line__print(queue, sym, start, evsel, len,
- 0, 0, 1, NULL);
+ 0, 0, 1, NULL, addr_fmt_width);
}
}

@@ -1174,9 +1173,9 @@ annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start
color_fprintf(stdout, color, " %7.2f", sample->percent);
}

- printf(" : ");
+ printf(" : ");

- disasm_line__print(dl, start);
+ disasm_line__print(dl, start, addr_fmt_width);
printf("\n");
} else if (max_lines && printed >= max_lines)
return 1;
@@ -1192,7 +1191,7 @@ annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start
if (!*al->line)
printf(" %*s:\n", width, " ");
else
- printf(" %*s: %s\n", width, " ", al->line);
+ printf(" %*s: %*s %s\n", width, " ", addr_fmt_width, " ", al->line);
}

return 0;
@@ -1796,6 +1795,19 @@ static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel)
printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->nr_samples", h->nr_samples);
}

+static int annotated_source__addr_fmt_width(struct list_head *lines, u64 start)
+{
+ char bf[32];
+ struct annotation_line *line;
+
+ list_for_each_entry_reverse(line, lines, node) {
+ if (line->offset != -1)
+ return scnprintf(bf, sizeof(bf), "%" PRIx64, start + line->offset);
+ }
+
+ return 0;
+}
+
int symbol__annotate_printf(struct symbol *sym, struct map *map,
struct perf_evsel *evsel, bool full_paths,
int min_pcnt, int max_lines, int context)
@@ -1808,7 +1820,7 @@ int symbol__annotate_printf(struct symbol *sym, struct map *map,
struct sym_hist *h = annotation__histogram(notes, evsel->idx);
struct annotation_line *pos, *queue = NULL;
u64 start = map__rip_2objdump(map, sym->start);
- int printed = 2, queue_len = 0;
+ int printed = 2, queue_len = 0, addr_fmt_width;
int more = 0;
u64 len;
int width = symbol_conf.show_total_period ? 12 : 8;
@@ -1839,6 +1851,8 @@ int symbol__annotate_printf(struct symbol *sym, struct map *map,
if (verbose > 0)
symbol__annotate_hits(sym, evsel);

+ addr_fmt_width = annotated_source__addr_fmt_width(&notes->src->source, start);
+
list_for_each_entry(pos, &notes->src->source, node) {
int err;

@@ -1849,7 +1863,7 @@ int symbol__annotate_printf(struct symbol *sym, struct map *map,

err = annotation_line__print(pos, sym, start, evsel, len,
min_pcnt, printed, max_lines,
- queue);
+ queue, addr_fmt_width);

switch (err) {
case 0: