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Subject[PATCH RFC 6/7] perf mem: Support page size
Date
From: Kan Liang <kan.liang@linux.intel.com>

Add option --page-size in "perf mem" to record/report page size.

Here are some examples.
perf mem --phys-data --page-size report -D

# PID, TID, IP, ADDR, PHYS ADDR, PAGE SIZE, LOCAL WEIGHT, DSRC, SYMBOL
20134 20134 0xffffffffb5bd2fd0 0x016ffff9a274e96a308 0x000000044e96a308
4K 1168 0x5080144
/lib/modules/4.18.0-rc7+/build/vmlinux:perf_ctx_unlock
20134 20134 0xffffffffb63f645c 0xffffffffb752b814 0xcfb52b814 2M 225
0x26a100142 /lib/modules/4.18.0-rc7+/build/vmlinux:_raw_spin_lock
20134 20134 0xffffffffb660300c 0xfffffe00016b8bb0 0x0 4K 0 0x5080144
/lib/modules/4.18.0-rc7+/build/vmlinux:__x86_indirect_thunk_rax


perf mem --phys-data --page-size report --stdio

# To display the perf.data header info, please use
# --header/--header-only options.
#
#
# Total Lost Samples: 0
#
# Samples: 5K of event 'cpu/mem-loads,ldlat=30/P'
# Total weight : 281234
# Sort order :
# mem,sym,dso,symbol_daddr,dso_daddr,tlb,locked,phys_daddr,page_size
#
# Overhead Samples Memory access Symbol
# Shared Object Data Symbol Data
# Object TLB access Locked Data Physical
# Address Page Size
# ........ ............ ........................
# ................................ ................
# ........................................... .......................
# ...................... ...... ......................
# ......................
#
28.54% 1826 L1 or L1 hit [k]
__x86_indirect_thunk_rax [kernel.vmlinux] [k] 0xffffb0df31b0ff28
[unknown] L1 or L2 hit No [k]
0000000000000000 4K
6.02% 256 L1 or L1 hit [.] touch_buffer
dtlb [.] 0x00007ffd50109da8 [stack]
L1 or L2 hit No [.] 0x000000042454ada8 4K
3.23% 5 L1 or L1 hit [k] clear_huge_page
[kernel.vmlinux] [k] 0xffff9a2753b8ce60 [unknown]
L1 or L2 hit No [k] 0x0000000453b8ce60 2M
2.98% 4 L1 or L1 hit [k] clear_page_erms
[kernel.vmlinux] [k] 0xffffb0df31b0fd00 [unknown]
L1 or L2 hit No [k] 0000000000000000 4K

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
---
tools/perf/Documentation/perf-mem.txt | 4 ++++
tools/perf/builtin-mem.c | 17 +++++++++++++++++
2 files changed, 21 insertions(+)

diff --git a/tools/perf/Documentation/perf-mem.txt b/tools/perf/Documentation/perf-mem.txt
index f8d2167..1708689 100644
--- a/tools/perf/Documentation/perf-mem.txt
+++ b/tools/perf/Documentation/perf-mem.txt
@@ -63,6 +63,10 @@ OPTIONS
--phys-data::
Record/Report sample physical addresses

+-s::
+--page-size::
+ Record/Report sample page size
+
RECORD OPTIONS
--------------
-e::
diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c
index 6048fca..0dad6c2 100644
--- a/tools/perf/builtin-mem.c
+++ b/tools/perf/builtin-mem.c
@@ -26,6 +26,7 @@ struct perf_mem {
bool dump_raw;
bool force;
bool phys_addr;
+ bool page_size;
int operation;
const char *cpu_list;
DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
@@ -107,6 +108,9 @@ static int __cmd_record(int argc, const char **argv, struct perf_mem *mem)
if (mem->phys_addr)
rec_argv[i++] = "--phys-data";

+ if (mem->phys_addr)
+ rec_argv[i++] = "--page-size";
+
for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
if (!perf_mem_events[j].record)
continue;
@@ -195,6 +199,12 @@ dump_raw_samples(struct perf_tool *tool,
symbol_conf.field_sep);
}

+ if (mem->page_size) {
+ printf("%s%s",
+ get_page_size_name(sample->page_size),
+ symbol_conf.field_sep);
+ }
+
if (field_sep)
fmt = "%"PRIu64"%s0x%"PRIx64"%s%s:%s\n";
else
@@ -253,6 +263,9 @@ static int report_raw_events(struct perf_mem *mem)
if (mem->phys_addr)
printf("PHYS ADDR, ");

+ if (mem->page_size)
+ printf("PAGE SIZE, ");
+
printf("LOCAL WEIGHT, DSRC, SYMBOL\n");

ret = perf_session__process_events(session);
@@ -277,6 +290,9 @@ static char *get_sort_order(struct perf_mem *mem)
if (mem->phys_addr)
strcat(sort, ",phys_daddr");

+ if (mem->page_size)
+ strcat(sort, ",page_size");
+
return strdup(sort);
}

@@ -418,6 +434,7 @@ int cmd_mem(int argc, const char **argv)
" between columns '.' is reserved."),
OPT_BOOLEAN('f', "force", &mem.force, "don't complain, do it"),
OPT_BOOLEAN('p', "phys-data", &mem.phys_addr, "Record/Report sample physical addresses"),
+ OPT_BOOLEAN('s', "page-size", &mem.page_size, "Record/Report sample page size"),
OPT_END()
};
const char *const mem_subcommands[] = { "record", "report", NULL };
--
2.7.4
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