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Subject[PATCH 3/8] perf ui annotate browser: Allow toggling addr offset view
Date
From: Arnaldo Carvalho de Melo <acme@redhat.com>

The lines in objdump have this format:

ffffffff8126543f: jne ffffffff81265494 <__list_del_entry+0x84>
<SNIP>
ffffffff81265494: mov %rdi,%rcx
Since we now have objdump_line allowing tools to print the offset
independently from the rest of the line, allow toggling a view where
just offsets from the start of the function are shown:

2f: jne ffffffff81265494 <__list_del_entry+0x84>
<SNIP>
84: mov %rdi,%rcx
The offset view will be the default as soon as operations that deal with
offsets in a function are handled accodringly, i.e. in offset view the
above will become:

2f: jne __list_del_entry+0x84
<SNIP>
84: mov %rdi,%rcx

And then a follow up patch will allow navigating thru jumps, just like
we handle callq instructions.

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-4zpgimmz8xv7b5c920el7s45@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/ui/browsers/annotate.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/tools/perf/util/ui/browsers/annotate.c b/tools/perf/util/ui/browsers/annotate.c
index 7ac7dd0..5cf9b78 100644
--- a/tools/perf/util/ui/browsers/annotate.c
+++ b/tools/perf/util/ui/browsers/annotate.c
@@ -20,6 +20,7 @@ struct annotate_browser {
int nr_asm_entries;
int nr_entries;
bool hide_src_code;
+ bool use_offset;
};

struct objdump_line_rb_node {
@@ -82,10 +83,13 @@ static void annotate_browser__write(struct ui_browser *self, void *entry, int ro
slsmg_write_nstring(ol->line, width - 18);
else {
char bf[64];
- u64 addr = ab->start + ol->offset;
- int printed = scnprintf(bf, sizeof(bf), " %" PRIx64 ":", addr);
- int color = -1;
+ u64 addr = ol->offset;
+ int printed, color = -1;

+ if (!ab->use_offset)
+ addr += ab->start;
+
+ printed = scnprintf(bf, sizeof(bf), " %" PRIx64 ":", addr);
if (change_color)
color = ui_browser__set_color(self, HE_COLORSET_ADDR);
slsmg_write_nstring(bf, printed);
@@ -250,6 +254,7 @@ static int annotate_browser__run(struct annotate_browser *self, int evidx,
struct symbol *sym = ms->sym;
const char *help = "<-/ESC: Exit, TAB/shift+TAB: Cycle hot lines, "
"H: Go to hottest line, ->/ENTER: Line action, "
+ "O: Toggle offset view, "
"S: Toggle source code view";
int key;

@@ -310,6 +315,10 @@ static int annotate_browser__run(struct annotate_browser *self, int evidx,
if (annotate_browser__toggle_source(self))
ui_helpline__puts(help);
continue;
+ case 'O':
+ case 'o':
+ self->use_offset = !self->use_offset;
+ continue;
case K_ENTER:
case K_RIGHT:
if (self->selection == NULL) {
--
1.7.9.2.358.g22243


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