[PATCH 11/12] perf report: Add support for PERF_SAMPLE_CODE_PAGE_SIZE

kan.liang
2019-01-21T17:06:41Z

From: Stephane Eranian <eranian@google.com>

Add a new sort dimension "code_page_size" for common sort.
With this option applied, perf can sort and report by sample's code page
size.

For example,
perf report --stdio --sort=comm,symbol,code_page_size
# To display the perf.data header info, please use
# --header/--header-only options.
#
#
# Total Lost Samples: 0
#
# Samples: 3K of event 'mem-loads:uP'
# Event count (approx.): 1470769
#
# Overhead Command Symbol Code Page Size IPC
# [IPC Coverage]
# ........ ....... ............................ ..............
# ....................
#
69.56% dtlb [.] GetTickCount 4K -

17.93% dtlb [.] Calibrate 4K -
-
11.40% dtlb [.] __gettimeofday 4K -
-

Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
---
tools/perf/Documentation/perf-report.txt | 1 +
tools/perf/util/hist.c | 2 ++
tools/perf/util/hist.h | 1 +
tools/perf/util/sort.c | 24 ++++++++++++++++++++++++
tools/perf/util/sort.h | 2 ++
5 files changed, 30 insertions(+)

diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 2ca0477..b6ecdbc 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -105,6 +105,7 @@ OPTIONS
guest machine
- sample: Number of sample
- period: Raw number of event count of sample
+ - code_page_size: the code page size of sampled code address (ip)

By default, comm, dso and symbol keys are used.
(i.e. --sort comm,dso,symbol)
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index fa94ee9..d16273c 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -193,6 +193,7 @@ void hists__calc_col_len(struct hists *hists, struct hist_entry *h)
hists__new_col_len(hists, HISTC_MEM_LVL, 21 + 3);
hists__new_col_len(hists, HISTC_LOCAL_WEIGHT, 12);
hists__new_col_len(hists, HISTC_GLOBAL_WEIGHT, 12);
+ hists__new_col_len(hists, HISTC_CODE_PAGE_SIZE, 6);

if (h->srcline) {
len = MAX(strlen(h->srcline), strlen(sort_srcline.se_header));
@@ -610,6 +611,7 @@ __hists__add_entry(struct hists *hists,
.cpumode = al->cpumode,
.ip = al->addr,
.level = al->level,
+ .code_page_size = sample->code_page_size,
.stat = {
.nr_events = 1,
.period = sample->period,
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 28c79b79..ca22eea 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -46,6 +46,7 @@ enum hist_column {
HISTC_DSO_TO,
HISTC_LOCAL_WEIGHT,
HISTC_GLOBAL_WEIGHT,
+ HISTC_CODE_PAGE_SIZE,
HISTC_MEM_DADDR_SYMBOL,
HISTC_MEM_DADDR_DSO,
HISTC_MEM_PHYS_DADDR,
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 93d1391..0aaf763 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -1420,6 +1420,29 @@ struct sort_entry sort_mem_data_page_size = {
};

static int64_t
+sort__code_page_size_cmp(struct hist_entry *left, struct hist_entry *right)
+{
+ uint64_t l = left->code_page_size;
+ uint64_t r = right->code_page_size;
+
+ return (int64_t)(r - l);
+}
+
+static int hist_entry__code_page_size_snprintf(struct hist_entry *he, char *bf,
+ size_t size, unsigned int width)
+{
+ return repsep_snprintf(bf, size, "%-*s", width,
+ get_page_size_name(he->code_page_size));
+}
+
+struct sort_entry sort_code_page_size = {
+ .se_header = "Code Page Size",
+ .se_cmp = sort__code_page_size_cmp,
+ .se_snprintf = hist_entry__code_page_size_snprintf,
+ .se_width_idx = HISTC_CODE_PAGE_SIZE,
+};
+
+static int64_t
sort__abort_cmp(struct hist_entry *left, struct hist_entry *right)
{
if (!left->branch_info || !right->branch_info)
@@ -1661,6 +1684,7 @@ static struct sort_dimension common_sort_dimensions[] = {
DIM(SORT_DSO_SIZE, "dso_size", sort_dso_size),
DIM(SORT_CGROUP_ID, "cgroup_id", sort_cgroup_id),
DIM(SORT_SYM_IPC_NULL, "ipc_null", sort_sym_ipc_null),
+ DIM(SORT_CODE_PAGE_SIZE, "code_page_size", sort_code_page_size),
};

#undef DIM
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index fc8290c..97fe807 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -105,6 +105,7 @@ struct hist_entry {
u64 transaction;
s32 socket;
s32 cpu;
+ u64 code_page_size;
u8 cpumode;
u8 depth;

@@ -232,6 +233,7 @@ enum sort_type {
SORT_DSO_SIZE,
SORT_CGROUP_ID,
SORT_SYM_IPC_NULL,
+ SORT_CODE_PAGE_SIZE,

/* branch stack specific sort keys */
__SORT_BRANCH_STACK,
--
2.7.4