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authorJames Morris <jmorris@namei.org>2009-08-10 18:33:01 -0400
committerJames Morris <jmorris@namei.org>2009-08-10 18:33:01 -0400
commit8b4bfc7feb005d84e2bd0831d8331a304e9d6483 (patch)
treea13891d7264aefeea65e60cc956e8fa704032cd9 /tools/perf
parent896a6de40ef3814525632609799af909338f50c3 (diff)
parent85dfd81dc57e8183a277ddd7a56aa65c96f3f487 (diff)
Merge branch 'master' into next
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/Documentation/perf-examples.txt225
-rw-r--r--tools/perf/Documentation/perf-record.txt60
-rw-r--r--tools/perf/Documentation/perf-stat.txt2
-rw-r--r--tools/perf/Documentation/perf-top.txt112
-rw-r--r--tools/perf/Makefile33
-rw-r--r--tools/perf/builtin-record.c13
-rw-r--r--tools/perf/builtin-report.c103
-rw-r--r--tools/perf/builtin-stat.c2
-rw-r--r--tools/perf/builtin-top.c552
-rw-r--r--tools/perf/util/callchain.c32
-rw-r--r--tools/perf/util/callchain.h8
-rw-r--r--tools/perf/util/header.c5
-rw-r--r--tools/perf/util/parse-events.c26
-rw-r--r--tools/perf/util/parse-events.h1
-rw-r--r--tools/perf/util/symbol.c134
-rw-r--r--tools/perf/util/symbol.h2
16 files changed, 1203 insertions, 107 deletions
diff --git a/tools/perf/Documentation/perf-examples.txt b/tools/perf/Documentation/perf-examples.txt
new file mode 100644
index 000000000000..8eb6c489fb15
--- /dev/null
+++ b/tools/perf/Documentation/perf-examples.txt
@@ -0,0 +1,225 @@
1
2 ------------------------------
3 ****** perf by examples ******
4 ------------------------------
5
6[ From an e-mail by Ingo Molnar, http://lkml.org/lkml/2009/8/4/346 ]
7
8
9First, discovery/enumeration of available counters can be done via
10'perf list':
11
12titan:~> perf list
13 [...]
14 kmem:kmalloc [Tracepoint event]
15 kmem:kmem_cache_alloc [Tracepoint event]
16 kmem:kmalloc_node [Tracepoint event]
17 kmem:kmem_cache_alloc_node [Tracepoint event]
18 kmem:kfree [Tracepoint event]
19 kmem:kmem_cache_free [Tracepoint event]
20 kmem:mm_page_free_direct [Tracepoint event]
21 kmem:mm_pagevec_free [Tracepoint event]
22 kmem:mm_page_alloc [Tracepoint event]
23 kmem:mm_page_alloc_zone_locked [Tracepoint event]
24 kmem:mm_page_pcpu_drain [Tracepoint event]
25 kmem:mm_page_alloc_extfrag [Tracepoint event]
26
27Then any (or all) of the above event sources can be activated and
28measured. For example the page alloc/free properties of a 'hackbench
29run' are:
30
31 titan:~> perf stat -e kmem:mm_page_pcpu_drain -e kmem:mm_page_alloc
32 -e kmem:mm_pagevec_free -e kmem:mm_page_free_direct ./hackbench 10
33 Time: 0.575
34
35 Performance counter stats for './hackbench 10':
36
37 13857 kmem:mm_page_pcpu_drain
38 27576 kmem:mm_page_alloc
39 6025 kmem:mm_pagevec_free
40 20934 kmem:mm_page_free_direct
41
42 0.613972165 seconds time elapsed
43
44You can observe the statistical properties as well, by using the
45'repeat the workload N times' feature of perf stat:
46
47 titan:~> perf stat --repeat 5 -e kmem:mm_page_pcpu_drain -e
48 kmem:mm_page_alloc -e kmem:mm_pagevec_free -e
49 kmem:mm_page_free_direct ./hackbench 10
50 Time: 0.627
51 Time: 0.644
52 Time: 0.564
53 Time: 0.559
54 Time: 0.626
55
56 Performance counter stats for './hackbench 10' (5 runs):
57
58 12920 kmem:mm_page_pcpu_drain ( +- 3.359% )
59 25035 kmem:mm_page_alloc ( +- 3.783% )
60 6104 kmem:mm_pagevec_free ( +- 0.934% )
61 18376 kmem:mm_page_free_direct ( +- 4.941% )
62
63 0.643954516 seconds time elapsed ( +- 2.363% )
64
65Furthermore, these tracepoints can be used to sample the workload as
66well. For example the page allocations done by a 'git gc' can be
67captured the following way:
68
69 titan:~/git> perf record -f -e kmem:mm_page_alloc -c 1 ./git gc
70 Counting objects: 1148, done.
71 Delta compression using up to 2 threads.
72 Compressing objects: 100% (450/450), done.
73 Writing objects: 100% (1148/1148), done.
74 Total 1148 (delta 690), reused 1148 (delta 690)
75 [ perf record: Captured and wrote 0.267 MB perf.data (~11679 samples) ]
76
77To check which functions generated page allocations:
78
79 titan:~/git> perf report
80 # Samples: 10646
81 #
82 # Overhead Command Shared Object
83 # ........ ............... ..........................
84 #
85 23.57% git-repack /lib64/libc-2.5.so
86 21.81% git /lib64/libc-2.5.so
87 14.59% git ./git
88 11.79% git-repack ./git
89 7.12% git /lib64/ld-2.5.so
90 3.16% git-repack /lib64/libpthread-2.5.so
91 2.09% git-repack /bin/bash
92 1.97% rm /lib64/libc-2.5.so
93 1.39% mv /lib64/ld-2.5.so
94 1.37% mv /lib64/libc-2.5.so
95 1.12% git-repack /lib64/ld-2.5.so
96 0.95% rm /lib64/ld-2.5.so
97 0.90% git-update-serv /lib64/libc-2.5.so
98 0.73% git-update-serv /lib64/ld-2.5.so
99 0.68% perf /lib64/libpthread-2.5.so
100 0.64% git-repack /usr/lib64/libz.so.1.2.3
101
102Or to see it on a more finegrained level:
103
104titan:~/git> perf report --sort comm,dso,symbol
105# Samples: 10646
106#
107# Overhead Command Shared Object Symbol
108# ........ ............... .......................... ......
109#
110 9.35% git-repack ./git [.] insert_obj_hash
111 9.12% git ./git [.] insert_obj_hash
112 7.31% git /lib64/libc-2.5.so [.] memcpy
113 6.34% git-repack /lib64/libc-2.5.so [.] _int_malloc
114 6.24% git-repack /lib64/libc-2.5.so [.] memcpy
115 5.82% git-repack /lib64/libc-2.5.so [.] __GI___fork
116 5.47% git /lib64/libc-2.5.so [.] _int_malloc
117 2.99% git /lib64/libc-2.5.so [.] memset
118
119Furthermore, call-graph sampling can be done too, of page
120allocations - to see precisely what kind of page allocations there
121are:
122
123 titan:~/git> perf record -f -g -e kmem:mm_page_alloc -c 1 ./git gc
124 Counting objects: 1148, done.
125 Delta compression using up to 2 threads.
126 Compressing objects: 100% (450/450), done.
127 Writing objects: 100% (1148/1148), done.
128 Total 1148 (delta 690), reused 1148 (delta 690)
129 [ perf record: Captured and wrote 0.963 MB perf.data (~42069 samples) ]
130
131 titan:~/git> perf report -g
132 # Samples: 10686
133 #
134 # Overhead Command Shared Object
135 # ........ ............... ..........................
136 #
137 23.25% git-repack /lib64/libc-2.5.so
138 |
139 |--50.00%-- _int_free
140 |
141 |--37.50%-- __GI___fork
142 | make_child
143 |
144 |--12.50%-- ptmalloc_unlock_all2
145 | make_child
146 |
147 --6.25%-- __GI_strcpy
148 21.61% git /lib64/libc-2.5.so
149 |
150 |--30.00%-- __GI_read
151 | |
152 | --83.33%-- git_config_from_file
153 | git_config
154 | |
155 [...]
156
157Or you can observe the whole system's page allocations for 10
158seconds:
159
160titan:~/git> perf stat -a -e kmem:mm_page_pcpu_drain -e
161kmem:mm_page_alloc -e kmem:mm_pagevec_free -e
162kmem:mm_page_free_direct sleep 10
163
164 Performance counter stats for 'sleep 10':
165
166 171585 kmem:mm_page_pcpu_drain
167 322114 kmem:mm_page_alloc
168 73623 kmem:mm_pagevec_free
169 254115 kmem:mm_page_free_direct
170
171 10.000591410 seconds time elapsed
172
173Or observe how fluctuating the page allocations are, via statistical
174analysis done over ten 1-second intervals:
175
176 titan:~/git> perf stat --repeat 10 -a -e kmem:mm_page_pcpu_drain -e
177 kmem:mm_page_alloc -e kmem:mm_pagevec_free -e
178 kmem:mm_page_free_direct sleep 1
179
180 Performance counter stats for 'sleep 1' (10 runs):
181
182 17254 kmem:mm_page_pcpu_drain ( +- 3.709% )
183 34394 kmem:mm_page_alloc ( +- 4.617% )
184 7509 kmem:mm_pagevec_free ( +- 4.820% )
185 25653 kmem:mm_page_free_direct ( +- 3.672% )
186
187 1.058135029 seconds time elapsed ( +- 3.089% )
188
189Or you can annotate the recorded 'git gc' run on a per symbol basis
190and check which instructions/source-code generated page allocations:
191
192 titan:~/git> perf annotate __GI___fork
193 ------------------------------------------------
194 Percent | Source code & Disassembly of libc-2.5.so
195 ------------------------------------------------
196 :
197 :
198 : Disassembly of section .plt:
199 : Disassembly of section .text:
200 :
201 : 00000031a2e95560 <__fork>:
202 [...]
203 0.00 : 31a2e95602: b8 38 00 00 00 mov $0x38,%eax
204 0.00 : 31a2e95607: 0f 05 syscall
205 83.42 : 31a2e95609: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax
206 0.00 : 31a2e9560f: 0f 87 4d 01 00 00 ja 31a2e95762 <__fork+0x202>
207 0.00 : 31a2e95615: 85 c0 test %eax,%eax
208
209( this shows that 83.42% of __GI___fork's page allocations come from
210 the 0x38 system call it performs. )
211
212etc. etc. - a lot more is possible. I could list a dozen of
213other different usecases straight away - neither of which is
214possible via /proc/vmstat.
215
216/proc/vmstat is not in the same league really, in terms of
217expressive power of system analysis and performance
218analysis.
219
220All that the above results needed were those new tracepoints
221in include/tracing/events/kmem.h.
222
223 Ingo
224
225
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt
index 1dbc1eeb4c01..6be696b0a2bb 100644
--- a/tools/perf/Documentation/perf-record.txt
+++ b/tools/perf/Documentation/perf-record.txt
@@ -29,13 +29,67 @@ OPTIONS
29 Select the PMU event. Selection can be a symbolic event name 29 Select the PMU event. Selection can be a symbolic event name
30 (use 'perf list' to list all events) or a raw PMU 30 (use 'perf list' to list all events) or a raw PMU
31 event (eventsel+umask) in the form of rNNN where NNN is a 31 event (eventsel+umask) in the form of rNNN where NNN is a
32 hexadecimal event descriptor. 32 hexadecimal event descriptor.
33 33
34-a:: 34-a::
35 system-wide collection 35 System-wide collection.
36 36
37-l:: 37-l::
38 scale counter values 38 Scale counter values.
39
40-p::
41--pid=::
42 Record events on existing pid.
43
44-r::
45--realtime=::
46 Collect data with this RT SCHED_FIFO priority.
47-A::
48--append::
49 Append to the output file to do incremental profiling.
50
51-f::
52--force::
53 Overwrite existing data file.
54
55-c::
56--count=::
57 Event period to sample.
58
59-o::
60--output=::
61 Output file name.
62
63-i::
64--inherit::
65 Child tasks inherit counters.
66-F::
67--freq=::
68 Profile at this frequency.
69
70-m::
71--mmap-pages=::
72 Number of mmap data pages.
73
74-g::
75--call-graph::
76 Do call-graph (stack chain/backtrace) recording.
77
78-v::
79--verbose::
80 Be more verbose (show counter open errors, etc).
81
82-s::
83--stat::
84 Per thread counts.
85
86-d::
87--data::
88 Sample addresses.
89
90-n::
91--no-samples::
92 Don't sample.
39 93
40SEE ALSO 94SEE ALSO
41-------- 95--------
diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt
index 0d74346d21ab..484080dd5b6f 100644
--- a/tools/perf/Documentation/perf-stat.txt
+++ b/tools/perf/Documentation/perf-stat.txt
@@ -40,7 +40,7 @@ OPTIONS
40-a:: 40-a::
41 system-wide collection 41 system-wide collection
42 42
43-S:: 43-c::
44 scale counter values 44 scale counter values
45 45
46EXAMPLES 46EXAMPLES
diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt
index 539d01289725..4a7d558dc309 100644
--- a/tools/perf/Documentation/perf-top.txt
+++ b/tools/perf/Documentation/perf-top.txt
@@ -3,36 +3,122 @@ perf-top(1)
3 3
4NAME 4NAME
5---- 5----
6perf-top - Run a command and profile it 6perf-top - System profiling tool.
7 7
8SYNOPSIS 8SYNOPSIS
9-------- 9--------
10[verse] 10[verse]
11'perf top' [-e <EVENT> | --event=EVENT] [-l] [-a] <command> 11'perf top' [-e <EVENT> | --event=EVENT] [<options>]
12 12
13DESCRIPTION 13DESCRIPTION
14----------- 14-----------
15This command runs a command and gathers a performance counter profile 15This command generates and displays a performance counter profile in realtime.
16from it.
17 16
18 17
19OPTIONS 18OPTIONS
20------- 19-------
21<command>...:: 20-a::
22 Any command you can specify in a shell. 21--all-cpus::
22 System-wide collection. (default)
23
24-c <count>::
25--count=<count>::
26 Event period to sample.
27
28-C <cpu>::
29--CPU=<cpu>::
30 CPU to profile.
31
32-d <seconds>::
33--delay=<seconds>::
34 Number of seconds to delay between refreshes.
23 35
24-e:: 36-e <event>::
25--event=:: 37--event=<event>::
26 Select the PMU event. Selection can be a symbolic event name 38 Select the PMU event. Selection can be a symbolic event name
27 (use 'perf list' to list all events) or a raw PMU 39 (use 'perf list' to list all events) or a raw PMU
28 event (eventsel+umask) in the form of rNNN where NNN is a 40 event (eventsel+umask) in the form of rNNN where NNN is a
29 hexadecimal event descriptor. 41 hexadecimal event descriptor.
30 42
31-a:: 43-E <entries>::
32 system-wide collection 44--entries=<entries>::
45 Display this many functions.
46
47-f <count>::
48--count-filter=<count>::
49 Only display functions with more events than this.
50
51-F <freq>::
52--freq=<freq>::
53 Profile at this frequency.
54
55-i::
56--inherit::
57 Child tasks inherit counters, only makes sens with -p option.
58
59-k <path>::
60--vmlinux=<path>::
61 Path to vmlinux. Required for annotation functionality.
62
63-m <pages>::
64--mmap-pages=<pages>::
65 Number of mmapped data pages.
66
67-p <pid>::
68--pid=<pid>::
69 Profile events on existing pid.
70
71-r <priority>::
72--realtime=<priority>::
73 Collect data with this RT SCHED_FIFO priority.
74
75-s <symbol>::
76--sym-annotate=<symbol>::
77 Annotate this symbol. Requires -k option.
78
79-v::
80--verbose::
81 Be more verbose (show counter open errors, etc).
82
83-z::
84--zero::
85 Zero history across display updates.
86
87INTERACTIVE PROMPTING KEYS
88--------------------------
89
90[d]::
91 Display refresh delay.
92
93[e]::
94 Number of entries to display.
95
96[E]::
97 Event to display when multiple counters are active.
98
99[f]::
100 Profile display filter (>= hit count).
101
102[F]::
103 Annotation display filter (>= % of total).
104
105[s]::
106 Annotate symbol.
107
108[S]::
109 Stop annotation, return to full profile display.
110
111[w]::
112 Toggle between weighted sum and individual count[E]r profile.
113
114[z]::
115 Toggle event count zeroing across display updates.
116
117[qQ]::
118 Quit.
119
120Pressing any unmapped key displays a menu, and prompts for input.
33 121
34-l::
35 scale counter values
36 122
37SEE ALSO 123SEE ALSO
38-------- 124--------
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 4b20fa47c3ab..60411e94113b 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -158,8 +158,10 @@ uname_P := $(shell sh -c 'uname -p 2>/dev/null || echo not')
158uname_V := $(shell sh -c 'uname -v 2>/dev/null || echo not') 158uname_V := $(shell sh -c 'uname -v 2>/dev/null || echo not')
159 159
160# If we're on a 64-bit kernel, use -m64 160# If we're on a 64-bit kernel, use -m64
161ifneq ($(patsubst %64,%,$(uname_M)),$(uname_M)) 161ifndef NO_64BIT
162 M64 := -m64 162 ifneq ($(patsubst %64,%,$(uname_M)),$(uname_M))
163 M64 := -m64
164 endif
163endif 165endif
164 166
165# CFLAGS and LDFLAGS are for the users to override from the command line. 167# CFLAGS and LDFLAGS are for the users to override from the command line.
@@ -345,7 +347,6 @@ BUILTIN_OBJS += builtin-stat.o
345BUILTIN_OBJS += builtin-top.o 347BUILTIN_OBJS += builtin-top.o
346 348
347PERFLIBS = $(LIB_FILE) 349PERFLIBS = $(LIB_FILE)
348EXTLIBS = -lbfd -liberty
349 350
350# 351#
351# Platform specific tweaks 352# Platform specific tweaks
@@ -374,6 +375,32 @@ ifeq ($(uname_S),Darwin)
374 PTHREAD_LIBS = 375 PTHREAD_LIBS =
375endif 376endif
376 377
378ifneq ($(shell sh -c "(echo '\#include <libelf.h>'; echo 'int main(void) { Elf * elf = elf_begin(0, ELF_C_READ_MMAP, 0); return (long)elf; }') | $(CC) -x c - $(ALL_CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -o /dev/null $(ALL_LDFLAGS) > /dev/null 2>&1 && echo y"), y)
379 msg := $(error No libelf.h/libelf found, please install libelf-dev/elfutils-libelf-devel);
380endif
381
382ifdef NO_DEMANGLE
383 BASIC_CFLAGS += -DNO_DEMANGLE
384else
385
386 has_bfd := $(shell sh -c "(echo '\#include <bfd.h>'; echo 'int main(void) { bfd_demangle(0, 0, 0); return 0; }') | $(CC) -x c - $(ALL_CFLAGS) -o /dev/null $(ALL_LDFLAGS) -lbfd > /dev/null 2>&1 && echo y")
387
388 has_bfd_iberty := $(shell sh -c "(echo '\#include <bfd.h>'; echo 'int main(void) { bfd_demangle(0, 0, 0); return 0; }') | $(CC) -x c - $(ALL_CFLAGS) -o /dev/null $(ALL_LDFLAGS) -lbfd -liberty > /dev/null 2>&1 && echo y")
389
390 has_bfd_iberty_z := $(shell sh -c "(echo '\#include <bfd.h>'; echo 'int main(void) { bfd_demangle(0, 0, 0); return 0; }') | $(CC) -x c - $(ALL_CFLAGS) -o /dev/null $(ALL_LDFLAGS) -lbfd -liberty -lz > /dev/null 2>&1 && echo y")
391
392 ifeq ($(has_bfd),y)
393 EXTLIBS += -lbfd
394 else ifeq ($(has_bfd_iberty),y)
395 EXTLIBS += -lbfd -liberty
396 else ifeq ($(has_bfd_iberty_z),y)
397 EXTLIBS += -lbfd -liberty -lz
398 else
399 msg := $(warning No bfd.h/libbfd found, install binutils-dev[el] to gain symbol demangling)
400 BASIC_CFLAGS += -DNO_DEMANGLE
401 endif
402endif
403
377ifndef CC_LD_DYNPATH 404ifndef CC_LD_DYNPATH
378 ifdef NO_R_TO_GCC_LINKER 405 ifdef NO_R_TO_GCC_LINKER
379 # Some gcc does not accept and pass -R to the linker to specify 406 # Some gcc does not accept and pass -R to the linker to specify
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 6da09928130f..0345aad8eba5 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -412,6 +412,7 @@ static void create_counter(int counter, int cpu, pid_t pid)
412 if (call_graph) 412 if (call_graph)
413 attr->sample_type |= PERF_SAMPLE_CALLCHAIN; 413 attr->sample_type |= PERF_SAMPLE_CALLCHAIN;
414 414
415
415 attr->mmap = track; 416 attr->mmap = track;
416 attr->comm = track; 417 attr->comm = track;
417 attr->inherit = (cpu < 0) && inherit; 418 attr->inherit = (cpu < 0) && inherit;
@@ -524,10 +525,14 @@ static int __cmd_record(int argc, const char **argv)
524 signal(SIGCHLD, sig_handler); 525 signal(SIGCHLD, sig_handler);
525 signal(SIGINT, sig_handler); 526 signal(SIGINT, sig_handler);
526 527
527 if (!stat(output_name, &st) && !force && !append_file) { 528 if (!stat(output_name, &st) && st.st_size) {
528 fprintf(stderr, "Error, output file %s exists, use -A to append or -f to overwrite.\n", 529 if (!force && !append_file) {
529 output_name); 530 fprintf(stderr, "Error, output file %s exists, use -A to append or -f to overwrite.\n",
530 exit(-1); 531 output_name);
532 exit(-1);
533 }
534 } else {
535 append_file = 0;
531 } 536 }
532 537
533 flags = O_CREAT|O_RDWR; 538 flags = O_CREAT|O_RDWR;
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index ce4f28645e64..99274cec0adb 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -31,7 +31,7 @@
31static char const *input_name = "perf.data"; 31static char const *input_name = "perf.data";
32static char *vmlinux = NULL; 32static char *vmlinux = NULL;
33 33
34static char default_sort_order[] = "comm,dso"; 34static char default_sort_order[] = "comm,dso,symbol";
35static char *sort_order = default_sort_order; 35static char *sort_order = default_sort_order;
36static char *dso_list_str, *comm_list_str, *sym_list_str, 36static char *dso_list_str, *comm_list_str, *sym_list_str,
37 *col_width_list_str; 37 *col_width_list_str;
@@ -68,7 +68,7 @@ static int callchain;
68 68
69static 69static
70struct callchain_param callchain_param = { 70struct callchain_param callchain_param = {
71 .mode = CHAIN_GRAPH_ABS, 71 .mode = CHAIN_GRAPH_REL,
72 .min_percent = 0.5 72 .min_percent = 0.5
73}; 73};
74 74
@@ -112,7 +112,9 @@ struct read_event {
112 struct perf_event_header header; 112 struct perf_event_header header;
113 u32 pid,tid; 113 u32 pid,tid;
114 u64 value; 114 u64 value;
115 u64 format[3]; 115 u64 time_enabled;
116 u64 time_running;
117 u64 id;
116}; 118};
117 119
118typedef union event_union { 120typedef union event_union {
@@ -698,7 +700,8 @@ sort__sym_print(FILE *fp, struct hist_entry *self, unsigned int width __used)
698 size_t ret = 0; 700 size_t ret = 0;
699 701
700 if (verbose) 702 if (verbose)
701 ret += repsep_fprintf(fp, "%#018llx ", (u64)self->ip); 703 ret += repsep_fprintf(fp, "%#018llx %c ", (u64)self->ip,
704 dso__symtab_origin(self->dso));
702 705
703 ret += repsep_fprintf(fp, "[%c] ", self->level); 706 ret += repsep_fprintf(fp, "[%c] ", self->level);
704 if (self->sym) { 707 if (self->sym) {
@@ -888,6 +891,21 @@ ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, int depth,
888 return ret; 891 return ret;
889} 892}
890 893
894static struct symbol *rem_sq_bracket;
895static struct callchain_list rem_hits;
896
897static void init_rem_hits(void)
898{
899 rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6);
900 if (!rem_sq_bracket) {
901 fprintf(stderr, "Not enough memory to display remaining hits\n");
902 return;
903 }
904
905 strcpy(rem_sq_bracket->name, "[...]");
906 rem_hits.sym = rem_sq_bracket;
907}
908
891static size_t 909static size_t
892callchain__fprintf_graph(FILE *fp, struct callchain_node *self, 910callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
893 u64 total_samples, int depth, int depth_mask) 911 u64 total_samples, int depth, int depth_mask)
@@ -897,25 +915,34 @@ callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
897 struct callchain_list *chain; 915 struct callchain_list *chain;
898 int new_depth_mask = depth_mask; 916 int new_depth_mask = depth_mask;
899 u64 new_total; 917 u64 new_total;
918 u64 remaining;
900 size_t ret = 0; 919 size_t ret = 0;
901 int i; 920 int i;
902 921
903 if (callchain_param.mode == CHAIN_GRAPH_REL) 922 if (callchain_param.mode == CHAIN_GRAPH_REL)
904 new_total = self->cumul_hit; 923 new_total = self->children_hit;
905 else 924 else
906 new_total = total_samples; 925 new_total = total_samples;
907 926
927 remaining = new_total;
928
908 node = rb_first(&self->rb_root); 929 node = rb_first(&self->rb_root);
909 while (node) { 930 while (node) {
931 u64 cumul;
932
910 child = rb_entry(node, struct callchain_node, rb_node); 933 child = rb_entry(node, struct callchain_node, rb_node);
934 cumul = cumul_hits(child);
935 remaining -= cumul;
911 936
912 /* 937 /*
913 * The depth mask manages the output of pipes that show 938 * The depth mask manages the output of pipes that show
914 * the depth. We don't want to keep the pipes of the current 939 * the depth. We don't want to keep the pipes of the current
915 * level for the last child of this depth 940 * level for the last child of this depth.
941 * Except if we have remaining filtered hits. They will
942 * supersede the last child
916 */ 943 */
917 next = rb_next(node); 944 next = rb_next(node);
918 if (!next) 945 if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining))
919 new_depth_mask &= ~(1 << (depth - 1)); 946 new_depth_mask &= ~(1 << (depth - 1));
920 947
921 /* 948 /*
@@ -930,7 +957,7 @@ callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
930 ret += ipchain__fprintf_graph(fp, chain, depth, 957 ret += ipchain__fprintf_graph(fp, chain, depth,
931 new_depth_mask, i++, 958 new_depth_mask, i++,
932 new_total, 959 new_total,
933 child->cumul_hit); 960 cumul);
934 } 961 }
935 ret += callchain__fprintf_graph(fp, child, new_total, 962 ret += callchain__fprintf_graph(fp, child, new_total,
936 depth + 1, 963 depth + 1,
@@ -938,6 +965,19 @@ callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
938 node = next; 965 node = next;
939 } 966 }
940 967
968 if (callchain_param.mode == CHAIN_GRAPH_REL &&
969 remaining && remaining != new_total) {
970
971 if (!rem_sq_bracket)
972 return ret;
973
974 new_depth_mask &= ~(1 << (depth - 1));
975
976 ret += ipchain__fprintf_graph(fp, &rem_hits, depth,
977 new_depth_mask, 0, new_total,
978 remaining);
979 }
980
941 return ret; 981 return ret;
942} 982}
943 983
@@ -1358,6 +1398,8 @@ static size_t output__fprintf(FILE *fp, u64 total_samples)
1358 unsigned int width; 1398 unsigned int width;
1359 char *col_width = col_width_list_str; 1399 char *col_width = col_width_list_str;
1360 1400
1401 init_rem_hits();
1402
1361 fprintf(fp, "# Samples: %Ld\n", (u64)total_samples); 1403 fprintf(fp, "# Samples: %Ld\n", (u64)total_samples);
1362 fprintf(fp, "#\n"); 1404 fprintf(fp, "#\n");
1363 1405
@@ -1424,11 +1466,13 @@ print_entries:
1424 if (sort_order == default_sort_order && 1466 if (sort_order == default_sort_order &&
1425 parent_pattern == default_parent_pattern) { 1467 parent_pattern == default_parent_pattern) {
1426 fprintf(fp, "#\n"); 1468 fprintf(fp, "#\n");
1427 fprintf(fp, "# (For more details, try: perf report --sort comm,dso,symbol)\n"); 1469 fprintf(fp, "# (For a higher level overview, try: perf report --sort comm,dso)\n");
1428 fprintf(fp, "#\n"); 1470 fprintf(fp, "#\n");
1429 } 1471 }
1430 fprintf(fp, "\n"); 1472 fprintf(fp, "\n");
1431 1473
1474 free(rem_sq_bracket);
1475
1432 return ret; 1476 return ret;
1433} 1477}
1434 1478
@@ -1690,14 +1734,37 @@ static void trace_event(event_t *event)
1690 dprintf(".\n"); 1734 dprintf(".\n");
1691} 1735}
1692 1736
1737static struct perf_header *header;
1738
1739static struct perf_counter_attr *perf_header__find_attr(u64 id)
1740{
1741 int i;
1742
1743 for (i = 0; i < header->attrs; i++) {
1744 struct perf_header_attr *attr = header->attr[i];
1745 int j;
1746
1747 for (j = 0; j < attr->ids; j++) {
1748 if (attr->id[j] == id)
1749 return &attr->attr;
1750 }
1751 }
1752
1753 return NULL;
1754}
1755
1693static int 1756static int
1694process_read_event(event_t *event, unsigned long offset, unsigned long head) 1757process_read_event(event_t *event, unsigned long offset, unsigned long head)
1695{ 1758{
1696 dprintf("%p [%p]: PERF_EVENT_READ: %d %d %Lu\n", 1759 struct perf_counter_attr *attr = perf_header__find_attr(event->read.id);
1760
1761 dprintf("%p [%p]: PERF_EVENT_READ: %d %d %s %Lu\n",
1697 (void *)(offset + head), 1762 (void *)(offset + head),
1698 (void *)(long)(event->header.size), 1763 (void *)(long)(event->header.size),
1699 event->read.pid, 1764 event->read.pid,
1700 event->read.tid, 1765 event->read.tid,
1766 attr ? __event_name(attr->type, attr->config)
1767 : "FAIL",
1701 event->read.value); 1768 event->read.value);
1702 1769
1703 return 0; 1770 return 0;
@@ -1743,8 +1810,6 @@ process_event(event_t *event, unsigned long offset, unsigned long head)
1743 return 0; 1810 return 0;
1744} 1811}
1745 1812
1746static struct perf_header *header;
1747
1748static u64 perf_header__sample_type(void) 1813static u64 perf_header__sample_type(void)
1749{ 1814{
1750 u64 sample_type = 0; 1815 u64 sample_type = 0;
@@ -1812,6 +1877,13 @@ static int __cmd_report(void)
1812 " -g?\n"); 1877 " -g?\n");
1813 exit(-1); 1878 exit(-1);
1814 } 1879 }
1880 } else if (callchain_param.mode != CHAIN_NONE && !callchain) {
1881 callchain = 1;
1882 if (register_callchain_param(&callchain_param) < 0) {
1883 fprintf(stderr, "Can't register callchain"
1884 " params\n");
1885 exit(-1);
1886 }
1815 } 1887 }
1816 1888
1817 if (load_kernel() < 0) { 1889 if (load_kernel() < 0) {
@@ -1950,6 +2022,13 @@ parse_callchain_opt(const struct option *opt __used, const char *arg,
1950 else if (!strncmp(tok, "fractal", strlen(arg))) 2022 else if (!strncmp(tok, "fractal", strlen(arg)))
1951 callchain_param.mode = CHAIN_GRAPH_REL; 2023 callchain_param.mode = CHAIN_GRAPH_REL;
1952 2024
2025 else if (!strncmp(tok, "none", strlen(arg))) {
2026 callchain_param.mode = CHAIN_NONE;
2027 callchain = 0;
2028
2029 return 0;
2030 }
2031
1953 else 2032 else
1954 return -1; 2033 return -1;
1955 2034
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index f9510eeeb6c7..b4b06c7903e1 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -496,7 +496,7 @@ static const struct option options[] = {
496 "stat events on existing pid"), 496 "stat events on existing pid"),
497 OPT_BOOLEAN('a', "all-cpus", &system_wide, 497 OPT_BOOLEAN('a', "all-cpus", &system_wide,
498 "system-wide collection from all CPUs"), 498 "system-wide collection from all CPUs"),
499 OPT_BOOLEAN('S', "scale", &scale, 499 OPT_BOOLEAN('c', "scale", &scale,
500 "scale/normalize counters"), 500 "scale/normalize counters"),
501 OPT_BOOLEAN('v', "verbose", &verbose, 501 OPT_BOOLEAN('v', "verbose", &verbose,
502 "be more verbose (show counter open errors, etc)"), 502 "be more verbose (show counter open errors, etc)"),
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index f139f1ab9333..7de28ce9ca26 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -31,6 +31,8 @@
31#include <fcntl.h> 31#include <fcntl.h>
32 32
33#include <stdio.h> 33#include <stdio.h>
34#include <termios.h>
35#include <unistd.h>
34 36
35#include <errno.h> 37#include <errno.h>
36#include <time.h> 38#include <time.h>
@@ -54,7 +56,7 @@ static int system_wide = 0;
54 56
55static int default_interval = 100000; 57static int default_interval = 100000;
56 58
57static u64 count_filter = 5; 59static int count_filter = 5;
58static int print_entries = 15; 60static int print_entries = 15;
59 61
60static int target_pid = -1; 62static int target_pid = -1;
@@ -69,15 +71,28 @@ static int freq = 0;
69static int verbose = 0; 71static int verbose = 0;
70static char *vmlinux = NULL; 72static char *vmlinux = NULL;
71 73
72static char *sym_filter;
73static unsigned long filter_start;
74static unsigned long filter_end;
75
76static int delay_secs = 2; 74static int delay_secs = 2;
77static int zero; 75static int zero;
78static int dump_symtab; 76static int dump_symtab;
79 77
80/* 78/*
79 * Source
80 */
81
82struct source_line {
83 u64 eip;
84 unsigned long count[MAX_COUNTERS];
85 char *line;
86 struct source_line *next;
87};
88
89static char *sym_filter = NULL;
90struct sym_entry *sym_filter_entry = NULL;
91static int sym_pcnt_filter = 5;
92static int sym_counter = 0;
93static int display_weighted = -1;
94
95/*
81 * Symbols 96 * Symbols
82 */ 97 */
83 98
@@ -91,9 +106,237 @@ struct sym_entry {
91 unsigned long snap_count; 106 unsigned long snap_count;
92 double weight; 107 double weight;
93 int skip; 108 int skip;
109 struct source_line *source;
110 struct source_line *lines;
111 struct source_line **lines_tail;
112 pthread_mutex_t source_lock;
94}; 113};
95 114
96struct sym_entry *sym_filter_entry; 115/*
116 * Source functions
117 */
118
119static void parse_source(struct sym_entry *syme)
120{
121 struct symbol *sym;
122 struct module *module;
123 struct section *section = NULL;
124 FILE *file;
125 char command[PATH_MAX*2], *path = vmlinux;
126 u64 start, end, len;
127
128 if (!syme)
129 return;
130
131 if (syme->lines) {
132 pthread_mutex_lock(&syme->source_lock);
133 goto out_assign;
134 }
135
136 sym = (struct symbol *)(syme + 1);
137 module = sym->module;
138
139 if (module)
140 path = module->path;
141 if (!path)
142 return;
143
144 start = sym->obj_start;
145 if (!start)
146 start = sym->start;
147
148 if (module) {
149 section = module->sections->find_section(module->sections, ".text");
150 if (section)
151 start -= section->vma;
152 }
153
154 end = start + sym->end - sym->start + 1;
155 len = sym->end - sym->start;
156
157 sprintf(command, "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s", start, end, path);
158
159 file = popen(command, "r");
160 if (!file)
161 return;
162
163 pthread_mutex_lock(&syme->source_lock);
164 syme->lines_tail = &syme->lines;
165 while (!feof(file)) {
166 struct source_line *src;
167 size_t dummy = 0;
168 char *c;
169
170 src = malloc(sizeof(struct source_line));
171 assert(src != NULL);
172 memset(src, 0, sizeof(struct source_line));
173
174 if (getline(&src->line, &dummy, file) < 0)
175 break;
176 if (!src->line)
177 break;
178
179 c = strchr(src->line, '\n');
180 if (c)
181 *c = 0;
182
183 src->next = NULL;
184 *syme->lines_tail = src;
185 syme->lines_tail = &src->next;
186
187 if (strlen(src->line)>8 && src->line[8] == ':') {
188 src->eip = strtoull(src->line, NULL, 16);
189 if (section)
190 src->eip += section->vma;
191 }
192 if (strlen(src->line)>8 && src->line[16] == ':') {
193 src->eip = strtoull(src->line, NULL, 16);
194 if (section)
195 src->eip += section->vma;
196 }
197 }
198 pclose(file);
199out_assign:
200 sym_filter_entry = syme;
201 pthread_mutex_unlock(&syme->source_lock);
202}
203
204static void __zero_source_counters(struct sym_entry *syme)
205{
206 int i;
207 struct source_line *line;
208
209 line = syme->lines;
210 while (line) {
211 for (i = 0; i < nr_counters; i++)
212 line->count[i] = 0;
213 line = line->next;
214 }
215}
216
217static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip)
218{
219 struct source_line *line;
220
221 if (syme != sym_filter_entry)
222 return;
223
224 if (pthread_mutex_trylock(&syme->source_lock))
225 return;
226
227 if (!syme->source)
228 goto out_unlock;
229
230 for (line = syme->lines; line; line = line->next) {
231 if (line->eip == ip) {
232 line->count[counter]++;
233 break;
234 }
235 if (line->eip > ip)
236 break;
237 }
238out_unlock:
239 pthread_mutex_unlock(&syme->source_lock);
240}
241
242static void lookup_sym_source(struct sym_entry *syme)
243{
244 struct symbol *symbol = (struct symbol *)(syme + 1);
245 struct source_line *line;
246 char pattern[PATH_MAX];
247 char *idx;
248
249 sprintf(pattern, "<%s>:", symbol->name);
250
251 if (symbol->module) {
252 idx = strstr(pattern, "\t");
253 if (idx)
254 *idx = 0;
255 }
256
257 pthread_mutex_lock(&syme->source_lock);
258 for (line = syme->lines; line; line = line->next) {
259 if (strstr(line->line, pattern)) {
260 syme->source = line;
261 break;
262 }
263 }
264 pthread_mutex_unlock(&syme->source_lock);
265}
266
267static void show_lines(struct source_line *queue, int count, int total)
268{
269 int i;
270 struct source_line *line;
271
272 line = queue;
273 for (i = 0; i < count; i++) {
274 float pcnt = 100.0*(float)line->count[sym_counter]/(float)total;
275
276 printf("%8li %4.1f%%\t%s\n", line->count[sym_counter], pcnt, line->line);
277 line = line->next;
278 }
279}
280
281#define TRACE_COUNT 3
282
283static void show_details(struct sym_entry *syme)
284{
285 struct symbol *symbol;
286 struct source_line *line;
287 struct source_line *line_queue = NULL;
288 int displayed = 0;
289 int line_queue_count = 0, total = 0, more = 0;
290
291 if (!syme)
292 return;
293
294 if (!syme->source)
295 lookup_sym_source(syme);
296
297 if (!syme->source)
298 return;
299
300 symbol = (struct symbol *)(syme + 1);
301 printf("Showing %s for %s\n", event_name(sym_counter), symbol->name);
302 printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter);
303
304 pthread_mutex_lock(&syme->source_lock);
305 line = syme->source;
306 while (line) {
307 total += line->count[sym_counter];
308 line = line->next;
309 }
310
311 line = syme->source;
312 while (line) {
313 float pcnt = 0.0;
314
315 if (!line_queue_count)
316 line_queue = line;
317 line_queue_count++;
318
319 if (line->count[sym_counter])
320 pcnt = 100.0 * line->count[sym_counter] / (float)total;
321 if (pcnt >= (float)sym_pcnt_filter) {
322 if (displayed <= print_entries)
323 show_lines(line_queue, line_queue_count, total);
324 else more++;
325 displayed += line_queue_count;
326 line_queue_count = 0;
327 line_queue = NULL;
328 } else if (line_queue_count > TRACE_COUNT) {
329 line_queue = line_queue->next;
330 line_queue_count--;
331 }
332
333 line->count[sym_counter] = zero ? 0 : line->count[sym_counter] * 7 / 8;
334 line = line->next;
335 }
336 pthread_mutex_unlock(&syme->source_lock);
337 if (more)
338 printf("%d lines not displayed, maybe increase display entries [e]\n", more);
339}
97 340
98struct dso *kernel_dso; 341struct dso *kernel_dso;
99 342
@@ -112,6 +355,9 @@ static double sym_weight(const struct sym_entry *sym)
112 double weight = sym->snap_count; 355 double weight = sym->snap_count;
113 int counter; 356 int counter;
114 357
358 if (!display_weighted)
359 return weight;
360
115 for (counter = 1; counter < nr_counters-1; counter++) 361 for (counter = 1; counter < nr_counters-1; counter++)
116 weight *= sym->count[counter]; 362 weight *= sym->count[counter];
117 363
@@ -159,7 +405,7 @@ static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se)
159static void print_sym_table(void) 405static void print_sym_table(void)
160{ 406{
161 int printed = 0, j; 407 int printed = 0, j;
162 int counter; 408 int counter, snap = !display_weighted ? sym_counter : 0;
163 float samples_per_sec = samples/delay_secs; 409 float samples_per_sec = samples/delay_secs;
164 float ksamples_per_sec = (samples-userspace_samples)/delay_secs; 410 float ksamples_per_sec = (samples-userspace_samples)/delay_secs;
165 float sum_ksamples = 0.0; 411 float sum_ksamples = 0.0;
@@ -175,7 +421,7 @@ static void print_sym_table(void)
175 pthread_mutex_unlock(&active_symbols_lock); 421 pthread_mutex_unlock(&active_symbols_lock);
176 422
177 list_for_each_entry_safe_from(syme, n, &active_symbols, node) { 423 list_for_each_entry_safe_from(syme, n, &active_symbols, node) {
178 syme->snap_count = syme->count[0]; 424 syme->snap_count = syme->count[snap];
179 if (syme->snap_count != 0) { 425 if (syme->snap_count != 0) {
180 syme->weight = sym_weight(syme); 426 syme->weight = sym_weight(syme);
181 rb_insert_active_sym(&tmp, syme); 427 rb_insert_active_sym(&tmp, syme);
@@ -195,7 +441,7 @@ static void print_sym_table(void)
195 samples_per_sec, 441 samples_per_sec,
196 100.0 - (100.0*((samples_per_sec-ksamples_per_sec)/samples_per_sec))); 442 100.0 - (100.0*((samples_per_sec-ksamples_per_sec)/samples_per_sec)));
197 443
198 if (nr_counters == 1) { 444 if (nr_counters == 1 || !display_weighted) {
199 printf("%Ld", (u64)attrs[0].sample_period); 445 printf("%Ld", (u64)attrs[0].sample_period);
200 if (freq) 446 if (freq)
201 printf("Hz "); 447 printf("Hz ");
@@ -203,7 +449,9 @@ static void print_sym_table(void)
203 printf(" "); 449 printf(" ");
204 } 450 }
205 451
206 for (counter = 0; counter < nr_counters; counter++) { 452 if (!display_weighted)
453 printf("%s", event_name(sym_counter));
454 else for (counter = 0; counter < nr_counters; counter++) {
207 if (counter) 455 if (counter)
208 printf("/"); 456 printf("/");
209 457
@@ -228,6 +476,11 @@ static void print_sym_table(void)
228 476
229 printf("------------------------------------------------------------------------------\n\n"); 477 printf("------------------------------------------------------------------------------\n\n");
230 478
479 if (sym_filter_entry) {
480 show_details(sym_filter_entry);
481 return;
482 }
483
231 if (nr_counters == 1) 484 if (nr_counters == 1)
232 printf(" samples pcnt"); 485 printf(" samples pcnt");
233 else 486 else
@@ -242,13 +495,13 @@ static void print_sym_table(void)
242 struct symbol *sym = (struct symbol *)(syme + 1); 495 struct symbol *sym = (struct symbol *)(syme + 1);
243 double pcnt; 496 double pcnt;
244 497
245 if (++printed > print_entries || syme->snap_count < count_filter) 498 if (++printed > print_entries || (int)syme->snap_count < count_filter)
246 continue; 499 continue;
247 500
248 pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) / 501 pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) /
249 sum_ksamples)); 502 sum_ksamples));
250 503
251 if (nr_counters == 1) 504 if (nr_counters == 1 || !display_weighted)
252 printf("%20.2f - ", syme->weight); 505 printf("%20.2f - ", syme->weight);
253 else 506 else
254 printf("%9.1f %10ld - ", syme->weight, syme->snap_count); 507 printf("%9.1f %10ld - ", syme->weight, syme->snap_count);
@@ -261,19 +514,250 @@ static void print_sym_table(void)
261 } 514 }
262} 515}
263 516
517static void prompt_integer(int *target, const char *msg)
518{
519 char *buf = malloc(0), *p;
520 size_t dummy = 0;
521 int tmp;
522
523 fprintf(stdout, "\n%s: ", msg);
524 if (getline(&buf, &dummy, stdin) < 0)
525 return;
526
527 p = strchr(buf, '\n');
528 if (p)
529 *p = 0;
530
531 p = buf;
532 while(*p) {
533 if (!isdigit(*p))
534 goto out_free;
535 p++;
536 }
537 tmp = strtoul(buf, NULL, 10);
538 *target = tmp;
539out_free:
540 free(buf);
541}
542
543static void prompt_percent(int *target, const char *msg)
544{
545 int tmp = 0;
546
547 prompt_integer(&tmp, msg);
548 if (tmp >= 0 && tmp <= 100)
549 *target = tmp;
550}
551
552static void prompt_symbol(struct sym_entry **target, const char *msg)
553{
554 char *buf = malloc(0), *p;
555 struct sym_entry *syme = *target, *n, *found = NULL;
556 size_t dummy = 0;
557
558 /* zero counters of active symbol */
559 if (syme) {
560 pthread_mutex_lock(&syme->source_lock);
561 __zero_source_counters(syme);
562 *target = NULL;
563 pthread_mutex_unlock(&syme->source_lock);
564 }
565
566 fprintf(stdout, "\n%s: ", msg);
567 if (getline(&buf, &dummy, stdin) < 0)
568 goto out_free;
569
570 p = strchr(buf, '\n');
571 if (p)
572 *p = 0;
573
574 pthread_mutex_lock(&active_symbols_lock);
575 syme = list_entry(active_symbols.next, struct sym_entry, node);
576 pthread_mutex_unlock(&active_symbols_lock);
577
578 list_for_each_entry_safe_from(syme, n, &active_symbols, node) {
579 struct symbol *sym = (struct symbol *)(syme + 1);
580
581 if (!strcmp(buf, sym->name)) {
582 found = syme;
583 break;
584 }
585 }
586
587 if (!found) {
588 fprintf(stderr, "Sorry, %s is not active.\n", sym_filter);
589 sleep(1);
590 return;
591 } else
592 parse_source(found);
593
594out_free:
595 free(buf);
596}
597
598static void print_mapped_keys(void)
599{
600 char *name = NULL;
601
602 if (sym_filter_entry) {
603 struct symbol *sym = (struct symbol *)(sym_filter_entry+1);
604 name = sym->name;
605 }
606
607 fprintf(stdout, "\nMapped keys:\n");
608 fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", delay_secs);
609 fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", print_entries);
610
611 if (nr_counters > 1)
612 fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(sym_counter));
613
614 fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter);
615
616 if (vmlinux) {
617 fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", sym_pcnt_filter);
618 fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL");
619 fprintf(stdout, "\t[S] stop annotation.\n");
620 }
621
622 if (nr_counters > 1)
623 fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", display_weighted ? 1 : 0);
624
625 fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", zero ? 1 : 0);
626 fprintf(stdout, "\t[qQ] quit.\n");
627}
628
629static int key_mapped(int c)
630{
631 switch (c) {
632 case 'd':
633 case 'e':
634 case 'f':
635 case 'z':
636 case 'q':
637 case 'Q':
638 return 1;
639 case 'E':
640 case 'w':
641 return nr_counters > 1 ? 1 : 0;
642 case 'F':
643 case 's':
644 case 'S':
645 return vmlinux ? 1 : 0;
646 }
647
648 return 0;
649}
650
651static void handle_keypress(int c)
652{
653 if (!key_mapped(c)) {
654 struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
655 struct termios tc, save;
656
657 print_mapped_keys();
658 fprintf(stdout, "\nEnter selection, or unmapped key to continue: ");
659 fflush(stdout);
660
661 tcgetattr(0, &save);
662 tc = save;
663 tc.c_lflag &= ~(ICANON | ECHO);
664 tc.c_cc[VMIN] = 0;
665 tc.c_cc[VTIME] = 0;
666 tcsetattr(0, TCSANOW, &tc);
667
668 poll(&stdin_poll, 1, -1);
669 c = getc(stdin);
670
671 tcsetattr(0, TCSAFLUSH, &save);
672 if (!key_mapped(c))
673 return;
674 }
675
676 switch (c) {
677 case 'd':
678 prompt_integer(&delay_secs, "Enter display delay");
679 break;
680 case 'e':
681 prompt_integer(&print_entries, "Enter display entries (lines)");
682 break;
683 case 'E':
684 if (nr_counters > 1) {
685 int i;
686
687 fprintf(stderr, "\nAvailable events:");
688 for (i = 0; i < nr_counters; i++)
689 fprintf(stderr, "\n\t%d %s", i, event_name(i));
690
691 prompt_integer(&sym_counter, "Enter details event counter");
692
693 if (sym_counter >= nr_counters) {
694 fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(0));
695 sym_counter = 0;
696 sleep(1);
697 }
698 } else sym_counter = 0;
699 break;
700 case 'f':
701 prompt_integer(&count_filter, "Enter display event count filter");
702 break;
703 case 'F':
704 prompt_percent(&sym_pcnt_filter, "Enter details display event filter (percent)");
705 break;
706 case 'q':
707 case 'Q':
708 printf("exiting.\n");
709 exit(0);
710 case 's':
711 prompt_symbol(&sym_filter_entry, "Enter details symbol");
712 break;
713 case 'S':
714 if (!sym_filter_entry)
715 break;
716 else {
717 struct sym_entry *syme = sym_filter_entry;
718
719 pthread_mutex_lock(&syme->source_lock);
720 sym_filter_entry = NULL;
721 __zero_source_counters(syme);
722 pthread_mutex_unlock(&syme->source_lock);
723 }
724 break;
725 case 'w':
726 display_weighted = ~display_weighted;
727 break;
728 case 'z':
729 zero = ~zero;
730 break;
731 }
732}
733
264static void *display_thread(void *arg __used) 734static void *display_thread(void *arg __used)
265{ 735{
266 struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; 736 struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
267 int delay_msecs = delay_secs * 1000; 737 struct termios tc, save;
738 int delay_msecs, c;
739
740 tcgetattr(0, &save);
741 tc = save;
742 tc.c_lflag &= ~(ICANON | ECHO);
743 tc.c_cc[VMIN] = 0;
744 tc.c_cc[VTIME] = 0;
268 745
269 printf("PerfTop refresh period: %d seconds\n", delay_secs); 746repeat:
747 delay_msecs = delay_secs * 1000;
748 tcsetattr(0, TCSANOW, &tc);
749 /* trash return*/
750 getc(stdin);
270 751
271 do { 752 do {
272 print_sym_table(); 753 print_sym_table();
273 } while (!poll(&stdin_poll, 1, delay_msecs) == 1); 754 } while (!poll(&stdin_poll, 1, delay_msecs) == 1);
274 755
275 printf("key pressed - exiting.\n"); 756 c = getc(stdin);
276 exit(0); 757 tcsetattr(0, TCSAFLUSH, &save);
758
759 handle_keypress(c);
760 goto repeat;
277 761
278 return NULL; 762 return NULL;
279} 763}
@@ -293,7 +777,6 @@ static const char *skip_symbols[] = {
293 777
294static int symbol_filter(struct dso *self, struct symbol *sym) 778static int symbol_filter(struct dso *self, struct symbol *sym)
295{ 779{
296 static int filter_match;
297 struct sym_entry *syme; 780 struct sym_entry *syme;
298 const char *name = sym->name; 781 const char *name = sym->name;
299 int i; 782 int i;
@@ -315,6 +798,10 @@ static int symbol_filter(struct dso *self, struct symbol *sym)
315 return 1; 798 return 1;
316 799
317 syme = dso__sym_priv(self, sym); 800 syme = dso__sym_priv(self, sym);
801 pthread_mutex_init(&syme->source_lock, NULL);
802 if (!sym_filter_entry && sym_filter && !strcmp(name, sym_filter))
803 sym_filter_entry = syme;
804
318 for (i = 0; skip_symbols[i]; i++) { 805 for (i = 0; skip_symbols[i]; i++) {
319 if (!strcmp(skip_symbols[i], name)) { 806 if (!strcmp(skip_symbols[i], name)) {
320 syme->skip = 1; 807 syme->skip = 1;
@@ -322,29 +809,6 @@ static int symbol_filter(struct dso *self, struct symbol *sym)
322 } 809 }
323 } 810 }
324 811
325 if (filter_match == 1) {
326 filter_end = sym->start;
327 filter_match = -1;
328 if (filter_end - filter_start > 10000) {
329 fprintf(stderr,
330 "hm, too large filter symbol <%s> - skipping.\n",
331 sym_filter);
332 fprintf(stderr, "symbol filter start: %016lx\n",
333 filter_start);
334 fprintf(stderr, " end: %016lx\n",
335 filter_end);
336 filter_end = filter_start = 0;
337 sym_filter = NULL;
338 sleep(1);
339 }
340 }
341
342 if (filter_match == 0 && sym_filter && !strcmp(name, sym_filter)) {
343 filter_match = 1;
344 filter_start = sym->start;
345 }
346
347
348 return 0; 812 return 0;
349} 813}
350 814
@@ -380,8 +844,6 @@ out_delete_dso:
380 return -1; 844 return -1;
381} 845}
382 846
383#define TRACE_COUNT 3
384
385/* 847/*
386 * Binary search in the histogram table and record the hit: 848 * Binary search in the histogram table and record the hit:
387 */ 849 */
@@ -394,6 +856,7 @@ static void record_ip(u64 ip, int counter)
394 856
395 if (!syme->skip) { 857 if (!syme->skip) {
396 syme->count[counter]++; 858 syme->count[counter]++;
859 record_precise_ip(syme, counter, ip);
397 pthread_mutex_lock(&active_symbols_lock); 860 pthread_mutex_lock(&active_symbols_lock);
398 if (list_empty(&syme->node) || !syme->node.next) 861 if (list_empty(&syme->node) || !syme->node.next)
399 __list_insert_active_sym(syme); 862 __list_insert_active_sym(syme);
@@ -690,8 +1153,8 @@ static const struct option options[] = {
690 "put the counters into a counter group"), 1153 "put the counters into a counter group"),
691 OPT_BOOLEAN('i', "inherit", &inherit, 1154 OPT_BOOLEAN('i', "inherit", &inherit,
692 "child tasks inherit counters"), 1155 "child tasks inherit counters"),
693 OPT_STRING('s', "sym-filter", &sym_filter, "pattern", 1156 OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name",
694 "only display symbols matchig this pattern"), 1157 "symbol to annotate - requires -k option"),
695 OPT_BOOLEAN('z', "zero", &zero, 1158 OPT_BOOLEAN('z', "zero", &zero,
696 "zero history across updates"), 1159 "zero history across updates"),
697 OPT_INTEGER('F', "freq", &freq, 1160 OPT_INTEGER('F', "freq", &freq,
@@ -734,6 +1197,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
734 delay_secs = 1; 1197 delay_secs = 1;
735 1198
736 parse_symbols(); 1199 parse_symbols();
1200 parse_source(sym_filter_entry);
737 1201
738 /* 1202 /*
739 * Fill in the ones not specifically initialized via -c: 1203 * Fill in the ones not specifically initialized via -c:
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index 9d3c8141b8c1..011473411642 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -13,6 +13,7 @@
13#include <stdio.h> 13#include <stdio.h>
14#include <stdbool.h> 14#include <stdbool.h>
15#include <errno.h> 15#include <errno.h>
16#include <math.h>
16 17
17#include "callchain.h" 18#include "callchain.h"
18 19
@@ -26,10 +27,14 @@ rb_insert_callchain(struct rb_root *root, struct callchain_node *chain,
26 struct rb_node **p = &root->rb_node; 27 struct rb_node **p = &root->rb_node;
27 struct rb_node *parent = NULL; 28 struct rb_node *parent = NULL;
28 struct callchain_node *rnode; 29 struct callchain_node *rnode;
30 u64 chain_cumul = cumul_hits(chain);
29 31
30 while (*p) { 32 while (*p) {
33 u64 rnode_cumul;
34
31 parent = *p; 35 parent = *p;
32 rnode = rb_entry(parent, struct callchain_node, rb_node); 36 rnode = rb_entry(parent, struct callchain_node, rb_node);
37 rnode_cumul = cumul_hits(rnode);
33 38
34 switch (mode) { 39 switch (mode) {
35 case CHAIN_FLAT: 40 case CHAIN_FLAT:
@@ -40,7 +45,7 @@ rb_insert_callchain(struct rb_root *root, struct callchain_node *chain,
40 break; 45 break;
41 case CHAIN_GRAPH_ABS: /* Falldown */ 46 case CHAIN_GRAPH_ABS: /* Falldown */
42 case CHAIN_GRAPH_REL: 47 case CHAIN_GRAPH_REL:
43 if (rnode->cumul_hit < chain->cumul_hit) 48 if (rnode_cumul < chain_cumul)
44 p = &(*p)->rb_left; 49 p = &(*p)->rb_left;
45 else 50 else
46 p = &(*p)->rb_right; 51 p = &(*p)->rb_right;
@@ -87,7 +92,7 @@ static void __sort_chain_graph_abs(struct callchain_node *node,
87 92
88 chain_for_each_child(child, node) { 93 chain_for_each_child(child, node) {
89 __sort_chain_graph_abs(child, min_hit); 94 __sort_chain_graph_abs(child, min_hit);
90 if (child->cumul_hit >= min_hit) 95 if (cumul_hits(child) >= min_hit)
91 rb_insert_callchain(&node->rb_root, child, 96 rb_insert_callchain(&node->rb_root, child,
92 CHAIN_GRAPH_ABS); 97 CHAIN_GRAPH_ABS);
93 } 98 }
@@ -108,11 +113,11 @@ static void __sort_chain_graph_rel(struct callchain_node *node,
108 u64 min_hit; 113 u64 min_hit;
109 114
110 node->rb_root = RB_ROOT; 115 node->rb_root = RB_ROOT;
111 min_hit = node->cumul_hit * min_percent / 100.0; 116 min_hit = ceil(node->children_hit * min_percent);
112 117
113 chain_for_each_child(child, node) { 118 chain_for_each_child(child, node) {
114 __sort_chain_graph_rel(child, min_percent); 119 __sort_chain_graph_rel(child, min_percent);
115 if (child->cumul_hit >= min_hit) 120 if (cumul_hits(child) >= min_hit)
116 rb_insert_callchain(&node->rb_root, child, 121 rb_insert_callchain(&node->rb_root, child,
117 CHAIN_GRAPH_REL); 122 CHAIN_GRAPH_REL);
118 } 123 }
@@ -122,7 +127,7 @@ static void
122sort_chain_graph_rel(struct rb_root *rb_root, struct callchain_node *chain_root, 127sort_chain_graph_rel(struct rb_root *rb_root, struct callchain_node *chain_root,
123 u64 min_hit __used, struct callchain_param *param) 128 u64 min_hit __used, struct callchain_param *param)
124{ 129{
125 __sort_chain_graph_rel(chain_root, param->min_percent); 130 __sort_chain_graph_rel(chain_root, param->min_percent / 100.0);
126 rb_root->rb_node = chain_root->rb_root.rb_node; 131 rb_root->rb_node = chain_root->rb_root.rb_node;
127} 132}
128 133
@@ -211,7 +216,8 @@ add_child(struct callchain_node *parent, struct ip_callchain *chain,
211 new = create_child(parent, false); 216 new = create_child(parent, false);
212 fill_node(new, chain, start, syms); 217 fill_node(new, chain, start, syms);
213 218
214 new->cumul_hit = new->hit = 1; 219 new->children_hit = 0;
220 new->hit = 1;
215} 221}
216 222
217/* 223/*
@@ -241,7 +247,8 @@ split_add_child(struct callchain_node *parent, struct ip_callchain *chain,
241 247
242 /* split the hits */ 248 /* split the hits */
243 new->hit = parent->hit; 249 new->hit = parent->hit;
244 new->cumul_hit = parent->cumul_hit; 250 new->children_hit = parent->children_hit;
251 parent->children_hit = cumul_hits(new);
245 new->val_nr = parent->val_nr - idx_local; 252 new->val_nr = parent->val_nr - idx_local;
246 parent->val_nr = idx_local; 253 parent->val_nr = idx_local;
247 254
@@ -249,6 +256,7 @@ split_add_child(struct callchain_node *parent, struct ip_callchain *chain,
249 if (idx_total < chain->nr) { 256 if (idx_total < chain->nr) {
250 parent->hit = 0; 257 parent->hit = 0;
251 add_child(parent, chain, idx_total, syms); 258 add_child(parent, chain, idx_total, syms);
259 parent->children_hit++;
252 } else { 260 } else {
253 parent->hit = 1; 261 parent->hit = 1;
254 } 262 }
@@ -269,13 +277,13 @@ __append_chain_children(struct callchain_node *root, struct ip_callchain *chain,
269 unsigned int ret = __append_chain(rnode, chain, start, syms); 277 unsigned int ret = __append_chain(rnode, chain, start, syms);
270 278
271 if (!ret) 279 if (!ret)
272 goto cumul; 280 goto inc_children_hit;
273 } 281 }
274 /* nothing in children, add to the current node */ 282 /* nothing in children, add to the current node */
275 add_child(root, chain, start, syms); 283 add_child(root, chain, start, syms);
276 284
277cumul: 285inc_children_hit:
278 root->cumul_hit++; 286 root->children_hit++;
279} 287}
280 288
281static int 289static int
@@ -317,8 +325,6 @@ __append_chain(struct callchain_node *root, struct ip_callchain *chain,
317 /* we match 100% of the path, increment the hit */ 325 /* we match 100% of the path, increment the hit */
318 if (i - start == root->val_nr && i == chain->nr) { 326 if (i - start == root->val_nr && i == chain->nr) {
319 root->hit++; 327 root->hit++;
320 root->cumul_hit++;
321
322 return 0; 328 return 0;
323 } 329 }
324 330
@@ -331,5 +337,7 @@ __append_chain(struct callchain_node *root, struct ip_callchain *chain,
331void append_chain(struct callchain_node *root, struct ip_callchain *chain, 337void append_chain(struct callchain_node *root, struct ip_callchain *chain,
332 struct symbol **syms) 338 struct symbol **syms)
333{ 339{
340 if (!chain->nr)
341 return;
334 __append_chain_children(root, chain, syms, 0); 342 __append_chain_children(root, chain, syms, 0);
335} 343}
diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h
index 7812122bea1d..a926ae4f5a16 100644
--- a/tools/perf/util/callchain.h
+++ b/tools/perf/util/callchain.h
@@ -7,6 +7,7 @@
7#include "symbol.h" 7#include "symbol.h"
8 8
9enum chain_mode { 9enum chain_mode {
10 CHAIN_NONE,
10 CHAIN_FLAT, 11 CHAIN_FLAT,
11 CHAIN_GRAPH_ABS, 12 CHAIN_GRAPH_ABS,
12 CHAIN_GRAPH_REL 13 CHAIN_GRAPH_REL
@@ -21,7 +22,7 @@ struct callchain_node {
21 struct rb_root rb_root; /* sorted tree of children */ 22 struct rb_root rb_root; /* sorted tree of children */
22 unsigned int val_nr; 23 unsigned int val_nr;
23 u64 hit; 24 u64 hit;
24 u64 cumul_hit; /* hit + hits of children */ 25 u64 children_hit;
25}; 26};
26 27
27struct callchain_param; 28struct callchain_param;
@@ -48,6 +49,11 @@ static inline void callchain_init(struct callchain_node *node)
48 INIT_LIST_HEAD(&node->val); 49 INIT_LIST_HEAD(&node->val);
49} 50}
50 51
52static inline u64 cumul_hits(struct callchain_node *node)
53{
54 return node->hit + node->children_hit;
55}
56
51int register_callchain_param(struct callchain_param *param); 57int register_callchain_param(struct callchain_param *param);
52void append_chain(struct callchain_node *root, struct ip_callchain *chain, 58void append_chain(struct callchain_node *root, struct ip_callchain *chain,
53 struct symbol **syms); 59 struct symbol **syms);
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 450384b3bbe5..b92a457ca32e 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -185,6 +185,8 @@ static void do_read(int fd, void *buf, size_t size)
185 185
186 if (ret < 0) 186 if (ret < 0)
187 die("failed to read"); 187 die("failed to read");
188 if (ret == 0)
189 die("failed to read: missing data");
188 190
189 size -= ret; 191 size -= ret;
190 buf += ret; 192 buf += ret;
@@ -213,9 +215,10 @@ struct perf_header *perf_header__read(int fd)
213 215
214 for (i = 0; i < nr_attrs; i++) { 216 for (i = 0; i < nr_attrs; i++) {
215 struct perf_header_attr *attr; 217 struct perf_header_attr *attr;
216 off_t tmp = lseek(fd, 0, SEEK_CUR); 218 off_t tmp;
217 219
218 do_read(fd, &f_attr, sizeof(f_attr)); 220 do_read(fd, &f_attr, sizeof(f_attr));
221 tmp = lseek(fd, 0, SEEK_CUR);
219 222
220 attr = perf_header_attr__new(&f_attr.attr); 223 attr = perf_header_attr__new(&f_attr.attr);
221 224
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 7bdad8df22a6..4858d83b3b67 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -121,13 +121,29 @@ static unsigned long hw_cache_stat[C(MAX)] = {
121 (strcmp(sys_dirent.d_name, ".")) && \ 121 (strcmp(sys_dirent.d_name, ".")) && \
122 (strcmp(sys_dirent.d_name, ".."))) 122 (strcmp(sys_dirent.d_name, "..")))
123 123
124static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
125{
126 char evt_path[MAXPATHLEN];
127 int fd;
128
129 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
130 sys_dir->d_name, evt_dir->d_name);
131 fd = open(evt_path, O_RDONLY);
132 if (fd < 0)
133 return -EINVAL;
134 close(fd);
135
136 return 0;
137}
138
124#define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next, file, st) \ 139#define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next, file, st) \
125 while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \ 140 while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \
126 if (snprintf(file, MAXPATHLEN, "%s/%s/%s", debugfs_path, \ 141 if (snprintf(file, MAXPATHLEN, "%s/%s/%s", debugfs_path, \
127 sys_dirent.d_name, evt_dirent.d_name) && \ 142 sys_dirent.d_name, evt_dirent.d_name) && \
128 (!stat(file, &st)) && (S_ISDIR(st.st_mode)) && \ 143 (!stat(file, &st)) && (S_ISDIR(st.st_mode)) && \
129 (strcmp(evt_dirent.d_name, ".")) && \ 144 (strcmp(evt_dirent.d_name, ".")) && \
130 (strcmp(evt_dirent.d_name, ".."))) 145 (strcmp(evt_dirent.d_name, "..")) && \
146 (!tp_event_has_id(&sys_dirent, &evt_dirent)))
131 147
132#define MAX_EVENT_LENGTH 30 148#define MAX_EVENT_LENGTH 30
133 149
@@ -223,9 +239,15 @@ char *event_name(int counter)
223{ 239{
224 u64 config = attrs[counter].config; 240 u64 config = attrs[counter].config;
225 int type = attrs[counter].type; 241 int type = attrs[counter].type;
242
243 return __event_name(type, config);
244}
245
246char *__event_name(int type, u64 config)
247{
226 static char buf[32]; 248 static char buf[32];
227 249
228 if (attrs[counter].type == PERF_TYPE_RAW) { 250 if (type == PERF_TYPE_RAW) {
229 sprintf(buf, "raw 0x%llx", config); 251 sprintf(buf, "raw 0x%llx", config);
230 return buf; 252 return buf;
231 } 253 }
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index 1ea5d09b6eb1..192a962e3a0f 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -10,6 +10,7 @@ extern int nr_counters;
10extern struct perf_counter_attr attrs[MAX_COUNTERS]; 10extern struct perf_counter_attr attrs[MAX_COUNTERS];
11 11
12extern char *event_name(int ctr); 12extern char *event_name(int ctr);
13extern char *__event_name(int type, u64 config);
13 14
14extern int parse_events(const struct option *opt, const char *str, int unset); 15extern int parse_events(const struct option *opt, const char *str, int unset);
15 16
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index b4fe0579bd6b..f1dcede14307 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -6,7 +6,16 @@
6#include <libelf.h> 6#include <libelf.h>
7#include <gelf.h> 7#include <gelf.h>
8#include <elf.h> 8#include <elf.h>
9
10#ifndef NO_DEMANGLE
9#include <bfd.h> 11#include <bfd.h>
12#else
13static inline
14char *bfd_demangle(void __used *v, const char __used *c, int __used i)
15{
16 return NULL;
17}
18#endif
10 19
11const char *sym_hist_filter; 20const char *sym_hist_filter;
12 21
@@ -15,6 +24,16 @@ const char *sym_hist_filter;
15#define DMGL_ANSI (1 << 1) /* Include const, volatile, etc */ 24#define DMGL_ANSI (1 << 1) /* Include const, volatile, etc */
16#endif 25#endif
17 26
27enum dso_origin {
28 DSO__ORIG_KERNEL = 0,
29 DSO__ORIG_JAVA_JIT,
30 DSO__ORIG_FEDORA,
31 DSO__ORIG_UBUNTU,
32 DSO__ORIG_BUILDID,
33 DSO__ORIG_DSO,
34 DSO__ORIG_NOT_FOUND,
35};
36
18static struct symbol *symbol__new(u64 start, u64 len, 37static struct symbol *symbol__new(u64 start, u64 len,
19 const char *name, unsigned int priv_size, 38 const char *name, unsigned int priv_size,
20 u64 obj_start, int verbose) 39 u64 obj_start, int verbose)
@@ -72,6 +91,7 @@ struct dso *dso__new(const char *name, unsigned int sym_priv_size)
72 self->sym_priv_size = sym_priv_size; 91 self->sym_priv_size = sym_priv_size;
73 self->find_symbol = dso__find_symbol; 92 self->find_symbol = dso__find_symbol;
74 self->slen_calculated = 0; 93 self->slen_calculated = 0;
94 self->origin = DSO__ORIG_NOT_FOUND;
75 } 95 }
76 96
77 return self; 97 return self;
@@ -652,11 +672,85 @@ out_close:
652 return err; 672 return err;
653} 673}
654 674
675#define BUILD_ID_SIZE 128
676
677static char *dso__read_build_id(struct dso *self, int verbose)
678{
679 int i;
680 GElf_Ehdr ehdr;
681 GElf_Shdr shdr;
682 Elf_Data *build_id_data;
683 Elf_Scn *sec;
684 char *build_id = NULL, *bid;
685 unsigned char *raw;
686 Elf *elf;
687 int fd = open(self->name, O_RDONLY);
688
689 if (fd < 0)
690 goto out;
691
692 elf = elf_begin(fd, ELF_C_READ_MMAP, NULL);
693 if (elf == NULL) {
694 if (verbose)
695 fprintf(stderr, "%s: cannot read %s ELF file.\n",
696 __func__, self->name);
697 goto out_close;
698 }
699
700 if (gelf_getehdr(elf, &ehdr) == NULL) {
701 if (verbose)
702 fprintf(stderr, "%s: cannot get elf header.\n", __func__);
703 goto out_elf_end;
704 }
705
706 sec = elf_section_by_name(elf, &ehdr, &shdr, ".note.gnu.build-id", NULL);
707 if (sec == NULL)
708 goto out_elf_end;
709
710 build_id_data = elf_getdata(sec, NULL);
711 if (build_id_data == NULL)
712 goto out_elf_end;
713 build_id = malloc(BUILD_ID_SIZE);
714 if (build_id == NULL)
715 goto out_elf_end;
716 raw = build_id_data->d_buf + 16;
717 bid = build_id;
718
719 for (i = 0; i < 20; ++i) {
720 sprintf(bid, "%02x", *raw);
721 ++raw;
722 bid += 2;
723 }
724 if (verbose >= 2)
725 printf("%s(%s): %s\n", __func__, self->name, build_id);
726out_elf_end:
727 elf_end(elf);
728out_close:
729 close(fd);
730out:
731 return build_id;
732}
733
734char dso__symtab_origin(const struct dso *self)
735{
736 static const char origin[] = {
737 [DSO__ORIG_KERNEL] = 'k',
738 [DSO__ORIG_JAVA_JIT] = 'j',
739 [DSO__ORIG_FEDORA] = 'f',
740 [DSO__ORIG_UBUNTU] = 'u',
741 [DSO__ORIG_BUILDID] = 'b',
742 [DSO__ORIG_DSO] = 'd',
743 };
744
745 if (self == NULL || self->origin == DSO__ORIG_NOT_FOUND)
746 return '!';
747 return origin[self->origin];
748}
749
655int dso__load(struct dso *self, symbol_filter_t filter, int verbose) 750int dso__load(struct dso *self, symbol_filter_t filter, int verbose)
656{ 751{
657 int size = strlen(self->name) + sizeof("/usr/lib/debug%s.debug"); 752 int size = PATH_MAX;
658 char *name = malloc(size); 753 char *name = malloc(size), *build_id = NULL;
659 int variant = 0;
660 int ret = -1; 754 int ret = -1;
661 int fd; 755 int fd;
662 756
@@ -665,26 +759,43 @@ int dso__load(struct dso *self, symbol_filter_t filter, int verbose)
665 759
666 self->adjust_symbols = 0; 760 self->adjust_symbols = 0;
667 761
668 if (strncmp(self->name, "/tmp/perf-", 10) == 0) 762 if (strncmp(self->name, "/tmp/perf-", 10) == 0) {
669 return dso__load_perf_map(self, filter, verbose); 763 ret = dso__load_perf_map(self, filter, verbose);
764 self->origin = ret > 0 ? DSO__ORIG_JAVA_JIT :
765 DSO__ORIG_NOT_FOUND;
766 return ret;
767 }
768
769 self->origin = DSO__ORIG_FEDORA - 1;
670 770
671more: 771more:
672 do { 772 do {
673 switch (variant) { 773 self->origin++;
674 case 0: /* Fedora */ 774 switch (self->origin) {
775 case DSO__ORIG_FEDORA:
675 snprintf(name, size, "/usr/lib/debug%s.debug", self->name); 776 snprintf(name, size, "/usr/lib/debug%s.debug", self->name);
676 break; 777 break;
677 case 1: /* Ubuntu */ 778 case DSO__ORIG_UBUNTU:
678 snprintf(name, size, "/usr/lib/debug%s", self->name); 779 snprintf(name, size, "/usr/lib/debug%s", self->name);
679 break; 780 break;
680 case 2: /* Sane people */ 781 case DSO__ORIG_BUILDID:
782 build_id = dso__read_build_id(self, verbose);
783 if (build_id != NULL) {
784 snprintf(name, size,
785 "/usr/lib/debug/.build-id/%.2s/%s.debug",
786 build_id, build_id + 2);
787 free(build_id);
788 break;
789 }
790 self->origin++;
791 /* Fall thru */
792 case DSO__ORIG_DSO:
681 snprintf(name, size, "%s", self->name); 793 snprintf(name, size, "%s", self->name);
682 break; 794 break;
683 795
684 default: 796 default:
685 goto out; 797 goto out;
686 } 798 }
687 variant++;
688 799
689 fd = open(name, O_RDONLY); 800 fd = open(name, O_RDONLY);
690 } while (fd < 0); 801 } while (fd < 0);
@@ -820,6 +931,9 @@ int dso__load_kernel(struct dso *self, const char *vmlinux,
820 if (err <= 0) 931 if (err <= 0)
821 err = dso__load_kallsyms(self, filter, verbose); 932 err = dso__load_kallsyms(self, filter, verbose);
822 933
934 if (err > 0)
935 self->origin = DSO__ORIG_KERNEL;
936
823 return err; 937 return err;
824} 938}
825 939
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 2f92b21c712d..1e003ec2f4b1 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -26,6 +26,7 @@ struct dso {
26 unsigned int sym_priv_size; 26 unsigned int sym_priv_size;
27 unsigned char adjust_symbols; 27 unsigned char adjust_symbols;
28 unsigned char slen_calculated; 28 unsigned char slen_calculated;
29 unsigned char origin;
29 char name[0]; 30 char name[0];
30}; 31};
31 32
@@ -49,6 +50,7 @@ int dso__load_modules(struct dso *self, symbol_filter_t filter, int verbose);
49int dso__load(struct dso *self, symbol_filter_t filter, int verbose); 50int dso__load(struct dso *self, symbol_filter_t filter, int verbose);
50 51
51size_t dso__fprintf(struct dso *self, FILE *fp); 52size_t dso__fprintf(struct dso *self, FILE *fp);
53char dso__symtab_origin(const struct dso *self);
52 54
53void symbol__init(void); 55void symbol__init(void);
54#endif /* _PERF_SYMBOL_ */ 56#endif /* _PERF_SYMBOL_ */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-28 05:16:12 -0500