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Subject[PATCH v1 2/2] perf annotate: Create hotkey 'c' to show max/min cycles
Date
In perf annotate view, a new hotkey 'c' is created for
showing the max/min cycles.

For example, when press 'c', the annotate view is:

Percent│ IPC Cycle(max/min)


│ Disassembly of section .text:

│ 000000000003aab0 <random@@GLIBC_2.2.5>:
8.22 │3.92 sub $0x18,%rsp
│3.92 mov $0x1,%esi
│3.92 xor %eax,%eax
│3.92 cmpl $0x0,argp_program_version_hook@@G
│3.92 1(2/1) ↓ je 20
│ lock cmpxchg %esi,__abort_msg@@GLIBC_P
│ ↓ jne 29
│ ↓ jmp 43
│1.10 20: cmpxchg %esi,__abort_msg@@GLIBC_PRIVATE+
8.93 │1.10 1(5/1) ↓ je 43

When press 'c' again, the annotate view is switched back:

Percent│ IPC Cycle


│ Disassembly of section .text:

│ 000000000003aab0 <random@@GLIBC_2.2.5>:
8.22 │3.92 sub $0x18,%rsp
│3.92 mov $0x1,%esi
│3.92 xor %eax,%eax
│3.92 cmpl $0x0,argp_program_version_hook@@GLIBC_2.2.5+0x
│3.92 1 ↓ je 20
│ lock cmpxchg %esi,__abort_msg@@GLIBC_PRIVATE+0x8a0
│ ↓ jne 29
│ ↓ jmp 43
│1.10 20: cmpxchg %esi,__abort_msg@@GLIBC_PRIVATE+0x8a0
8.93 │1.10 1 ↓ je 43

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
---
tools/perf/ui/browsers/annotate.c | 8 ++++++++
tools/perf/util/annotate.c | 37 +++++++++++++++++++++++++++++++------
tools/perf/util/annotate.h | 7 ++++++-
3 files changed, 45 insertions(+), 7 deletions(-)

diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
index 3781d74..f202a3f 100644
--- a/tools/perf/ui/browsers/annotate.c
+++ b/tools/perf/ui/browsers/annotate.c
@@ -695,6 +695,7 @@ static int annotate_browser__run(struct annotate_browser *browser,
"O Bump offset level (jump targets -> +call -> all -> cycle thru)\n"
"s Toggle source code view\n"
"t Circulate percent, total period, samples view\n"
+ "c Show max/min cycle\n"
"/ Search string\n"
"k Toggle line numbers\n"
"P Print to [symbol_name].annotation file.\n"
@@ -791,6 +792,13 @@ static int annotate_browser__run(struct annotate_browser *browser,
notes->options->show_total_period = true;
annotation__update_column_widths(notes);
continue;
+ case 'c':
+ if (notes->options->show_maxmin_cycle)
+ notes->options->show_maxmin_cycle = false;
+ else
+ notes->options->show_maxmin_cycle = true;
+ annotation__update_column_widths(notes);
+ continue;
case K_LEFT:
case K_ESC:
case 'q':
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 934a172..17fff6f 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -2495,13 +2495,38 @@ static void __annotation_line__write(struct annotation_line *al, struct annotati
else
obj__printf(obj, "%*s ", ANNOTATION__IPC_WIDTH - 1, "IPC");

- if (al->cycles)
- obj__printf(obj, "%*" PRIu64 " ",
+ if (!notes->options->show_maxmin_cycle) {
+ if (al->cycles)
+ obj__printf(obj, "%*" PRIu64 " ",
ANNOTATION__CYCLES_WIDTH - 1, al->cycles);
- else if (!show_title)
- obj__printf(obj, "%*s", ANNOTATION__CYCLES_WIDTH, " ");
- else
- obj__printf(obj, "%*s ", ANNOTATION__CYCLES_WIDTH - 1, "Cycle");
+ else if (!show_title)
+ obj__printf(obj, "%*s",
+ ANNOTATION__CYCLES_WIDTH, " ");
+ else
+ obj__printf(obj, "%*s ",
+ ANNOTATION__CYCLES_WIDTH - 1,
+ "Cycle");
+ } else {
+ if (al->cycles) {
+ char str[32];
+
+ scnprintf(str, sizeof(str),
+ "%" PRIu64 "(%" PRIu64 "/%" PRIu64 ")",
+ al->cycles, al->cycles_max,
+ al->cycles_min);
+
+ obj__printf(obj, "%*s ",
+ ANNOTATION__MAXMIN_CYCLES_WIDTH - 1,
+ str);
+ } else if (!show_title)
+ obj__printf(obj, "%*s",
+ ANNOTATION__MAXMIN_CYCLES_WIDTH,
+ " ");
+ else
+ obj__printf(obj, "%*s ",
+ ANNOTATION__MAXMIN_CYCLES_WIDTH - 1,
+ "Cycle(max/min)");
+ }
}

obj__printf(obj, " ");
diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
index d50363d..4cafd63 100644
--- a/tools/perf/util/annotate.h
+++ b/tools/perf/util/annotate.h
@@ -61,6 +61,7 @@ bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2);

#define ANNOTATION__IPC_WIDTH 6
#define ANNOTATION__CYCLES_WIDTH 6
+#define ANNOTATION__MAXMIN_CYCLES_WIDTH 19

struct annotation_options {
bool hide_src_code,
@@ -69,7 +70,8 @@ struct annotation_options {
show_linenr,
show_nr_jumps,
show_nr_samples,
- show_total_period;
+ show_total_period,
+ show_maxmin_cycle;
u8 offset_level;
};

@@ -243,6 +245,9 @@ struct annotation {

static inline int annotation__cycles_width(struct annotation *notes)
{
+ if (notes->have_cycles && notes->options->show_maxmin_cycle)
+ return ANNOTATION__IPC_WIDTH + ANNOTATION__MAXMIN_CYCLES_WIDTH;
+
return notes->have_cycles ? ANNOTATION__IPC_WIDTH + ANNOTATION__CYCLES_WIDTH : 0;
}

--
2.7.4
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