[PATCH V4 12/13] perf report: Add support for PERF_SAMPLE_CODE_PAGE_SIZE

[kan . liang]

From: Stephane Eranian <eranian@xxxxxxxxxx>

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@xxxxxxxxxx>
Signed-off-by: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>
---

Changes since V3
- Apply modified get_page_size_name()

 tools/perf/Documentation/perf-report.txt |  1 +
 tools/perf/util/hist.c                   |  2 ++
 tools/perf/util/hist.h                   |  1 +
 tools/perf/util/sort.c                   | 26 ++++++++++++++++++++++++++
 tools/perf/util/sort.h                   |  2 ++
 5 files changed, 32 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 253bf3f..e4ab496 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));
@@ -613,6 +614,7 @@ __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 2b72d03..76640fc 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 1e0bb0c..c6d5e5c 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -1422,6 +1422,31 @@ 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)
+{
+	char str[PAGE_SIZE_NAME_LEN];
+
+	return repsep_snprintf(bf, size, "%-*s", width,
+			       get_page_size_name(he->code_page_size, str));
+}
+
+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)
@@ -1663,6 +1688,7 @@ 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 2e324ae..33e5b46 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -103,6 +103,7 @@ struct hist_entry {
 	u64			transaction;
 	s32			socket;
 	s32			cpu;
+	u64			code_page_size;
 	u8			cpumode;
 	u8			depth;
 
@@ -230,6 +231,7 @@ 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