diff options
author | Jiri Olsa <jolsa@kernel.org> | 2016-05-11 18:23:48 +0200 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-10-21 10:31:56 -0300 |
commit | dd805768f7d74ba412817811cc60e2b153a43ee8 (patch) | |
tree | 4ed8a1c51578a2af300f357d63df16deeb676cd2 /tools/perf/builtin-c2c.c | |
parent | 2709b97dc2e250b5365629b99da5aa1cca7708f8 (diff) | |
download | linux-dd805768f7d74ba412817811cc60e2b153a43ee8.tar.bz2 |
perf c2c report: Allow to report callchains
Add --call-graph option to properly setup callchain code. Adding default
settings to display callchains whenever they are stored in the
perf.data.
Committer Notes:
Testing it:
[root@jouet ~]# perf c2c record -a -g sleep 5
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 5.331 MB perf.data (4263 samples) ]
[root@jouet ~]# perf evlist -v
cpu/mem-loads,ldlat=30/P: type: 4, size: 112, config: 0x1cd, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|ADDR|CALLCHAIN|ID|CPU|PERIOD|DATA_SRC|WEIGHT, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, task: 1, precise_ip: 3, mmap_data: 1, sample_id_all: 1, mmap2: 1, comm_exec: 1, { bp_addr, config1 }: 0x1f
cpu/mem-stores/P: type: 4, size: 112, config: 0x82d0, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|ADDR|CALLCHAIN|ID|CPU|PERIOD|DATA_SRC|WEIGHT, read_format: ID, disabled: 1, inherit: 1, freq: 1, precise_ip: 3, sample_id_all: 1
[root@jouet ~]# perf c2c report --stats
=================================================
Trace Event Information
=================================================
Total records : 4263
Locked Load/Store Operations : 220
Load Operations : 2130
Loads - uncacheable : 1
Loads - IO : 7
Loads - Miss : 86
Loads - no mapping : 5
Load Fill Buffer Hit : 609
Load L1D hit : 612
=================================================
Trace Event Information
=================================================
Total records : 4263
Locked Load/Store Operations : 220
Load Operations : 2130
Loads - uncacheable : 1
Loads - IO : 7
Loads - Miss : 86
Loads - no mapping : 5
Load Fill Buffer Hit : 609
Load L1D hit : 612
Load L2D hit : 27
Load LLC hit : 607
Load Local HITM : 15
Load Remote HITM : 0
Load Remote HIT : 0
Load Local DRAM : 176
Load Remote DRAM : 0
Load MESI State Exclusive : 176
Load MESI State Shared : 0
Load LLC Misses : 176
LLC Misses to Local DRAM : 100.0%
LLC Misses to Remote DRAM : 0.0%
LLC Misses to Remote cache (HIT) : 0.0%
LLC Misses to Remote cache (HITM) : 0.0%
Store Operations : 2133
Store - uncacheable : 0
Store - no mapping : 1
Store L1D Hit : 1967
Store L1D Miss : 165
No Page Map Rejects : 145
Unable to parse data source : 0
=================================================
Global Shared Cache Line Event Information
=================================================
Total Shared Cache Lines : 15
Load HITs on shared lines : 26
Fill Buffer Hits on shared lines : 7
L1D hits on shared lines : 3
L2D hits on shared lines : 0
LLC hits on shared lines : 16
Locked Access on shared lines : 2
Store HITs on shared lines : 8
Store L1D hits on shared lines : 7
Total Merged records : 23
=================================================
c2c details
=================================================
Events : cpu/mem-loads,ldlat=30/P
: cpu/mem-stores/P
[root@jouet ~]#
[root@jouet ~]# perf c2c report
Shared Data Cache Line Table (2378 entries)
Total --- LLC Load Hitm -- -- Store Reference - - Load Dram - LLC Total - Core Load Hit -
Cacheline records %hitm Total Lcl Rmt Total L1Hit L1Miss Lcl Rmt Ld Miss Loads FB L1 L2
- 0xffff880024380c00 10 0.00% 0 0 0 6 6 0 0 0 0 4 1 3 0
- 0.13% _raw_spin_lock_irqsave
- 0.07% ep_poll
sys_epoll_wait
do_syscall_64
return_from_SYSCALL_64
+ 0x103573
- 0.05% ep_poll_callback
__wake_up_common
- __wake_up_sync_key
- 0.02% pipe_read
__vfs_read
vfs_read
sys_read
do_syscall_64
return_from_SYSCALL_64
0xfdad
+ 0.02% sock_def_readable
+ 0.02% ep_scan_ready_list.constprop.12
+ 0.00% mutex_lock
+ 0.00% __wake_up_common
+ 0xffff880024380c40 1 0.00% 0 0 0 1 1 0 0 0 0 0 0 0 0
+ 0xffff880024380c80 1 0.00% 0 0 0 0 0 0 0 0 0 1 0 0 0
- 0xffff8800243e9f00 1 0.00% 0 0 0 1 1 0 0 0 0 0 0 0 0
enqueue_entity
enqueue_task_fair
activate_task
ttwu_do_activate
try_to_wake_up
wake_up_process
hrtimer_wakeup
__hrtimer_run_queues
hrtimer_interrupt
local_apic_timer_interrupt
smp_apic_timer_interrupt
apic_timer_interrupt
cpuidle_enter
call_cpuidle
help
-------------
And when presing 'd' to see the cacheline details:
Cacheline 0xffff880024380c00
----- HITM ----- -- Store Refs -- --------- cycles ----- cpu
Rmt Lcl L1 Hit L1 Miss Off Pid Tid rmt hitm lcl hitm load cnt Symbol
- 0.00% 0.00% 100.00% 0.00% 0x0 1473 1474:Chrome_ChildIOT 0 0 41 2 [k] _raw_spin_lock_irqsave [kernel]
- _raw_spin_lock_irqsave
- 51.52% ep_poll
sys_epoll_wait
do_syscall_64
return_from_SYSCALL_64
- 0x103573
47.19% 0
4.33% 0xc30bd
- 35.93% ep_poll_callback
__wake_up_common
- __wake_up_sync_key
- 18.20% pipe_read
__vfs_read
vfs_read
sys_read
do_syscall_64
return_from_SYSCALL_64
0xfdad
- 17.73% sock_def_readable
unix_stream_sendmsg
sock_sendmsg
___sys_sendmsg
__sys_sendmsg
sys_sendmsg
do_syscall_64
return_from_SYSCALL_64
__GI___libc_sendmsg
0x12c036af1fc0
0x16a4050
0x894928ec83485354
+ 12.45% ep_scan_ready_list.constprop.12
+ 0.00% 0.00% 0.00% 0.00% 0x8 1473 1474:Chrome_ChildIOT 0 0 102 1 [k] mutex_lock [kernel]
+ 0.00% 0.00% 0.00% 0.00% 0x38 1473 1473:chrome 0 0 88 1 [k] __wake_up_common [kernel]
help
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-inykbom2f19difvsu1e18avr@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-c2c.c')
-rw-r--r-- | tools/perf/builtin-c2c.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c index 88d88eac53aa..950a4123ea66 100644 --- a/tools/perf/builtin-c2c.c +++ b/tools/perf/builtin-c2c.c @@ -17,6 +17,7 @@ #include "evsel.h" #include <asm/bug.h> #include "ui/browsers/hists.h" +#include "evlist.h" struct c2c_hists { struct hists hists; @@ -183,6 +184,11 @@ static int process_sample_event(struct perf_tool *tool __maybe_unused, return -1; } + ret = sample__resolve_callchain(sample, &callchain_cursor, NULL, + evsel, &al, sysctl_perf_event_max_stack); + if (ret) + goto out; + mi = sample__resolve_mem(sample, &al); if (mi == NULL) return -ENOMEM; @@ -2117,6 +2123,58 @@ static void ui_quirks(void) } } +#define CALLCHAIN_DEFAULT_OPT "graph,0.5,caller,function,percent" + +const char callchain_help[] = "Display call graph (stack chain/backtrace):\n\n" + CALLCHAIN_REPORT_HELP + "\n\t\t\t\tDefault: " CALLCHAIN_DEFAULT_OPT; + +static int +parse_callchain_opt(const struct option *opt, const char *arg, int unset) +{ + struct callchain_param *callchain = opt->value; + + callchain->enabled = !unset; + /* + * --no-call-graph + */ + if (unset) { + symbol_conf.use_callchain = false; + callchain->mode = CHAIN_NONE; + return 0; + } + + return parse_callchain_report_opt(arg); +} + +static int setup_callchain(struct perf_evlist *evlist) +{ + u64 sample_type = perf_evlist__combined_sample_type(evlist); + enum perf_call_graph_mode mode = CALLCHAIN_NONE; + + if ((sample_type & PERF_SAMPLE_REGS_USER) && + (sample_type & PERF_SAMPLE_STACK_USER)) + mode = CALLCHAIN_DWARF; + else if (sample_type & PERF_SAMPLE_BRANCH_STACK) + mode = CALLCHAIN_LBR; + else if (sample_type & PERF_SAMPLE_CALLCHAIN) + mode = CALLCHAIN_FP; + + if (!callchain_param.enabled && + callchain_param.mode != CHAIN_NONE && + mode != CALLCHAIN_NONE) { + symbol_conf.use_callchain = true; + if (callchain_register_param(&callchain_param) < 0) { + ui__error("Can't register callchain params.\n"); + return -EINVAL; + } + } + + callchain_param.record_mode = mode; + callchain_param.min_percent = 0; + return 0; +} + static int perf_c2c__report(int argc, const char **argv) { struct perf_session *session; @@ -2124,6 +2182,7 @@ static int perf_c2c__report(int argc, const char **argv) struct perf_data_file file = { .mode = PERF_DATA_MODE_READ, }; + char callchain_default_opt[] = CALLCHAIN_DEFAULT_OPT; const struct option c2c_options[] = { OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, "file", "vmlinux pathname"), @@ -2138,6 +2197,10 @@ static int perf_c2c__report(int argc, const char **argv) #endif OPT_BOOLEAN(0, "stats", &c2c.stats_only, "Use the stdio interface"), + OPT_CALLBACK_DEFAULT('g', "call-graph", &callchain_param, + "print_type,threshold[,print_limit],order,sort_key[,branch],value", + callchain_help, &parse_callchain_opt, + callchain_default_opt), OPT_END() }; int err = 0; @@ -2179,6 +2242,10 @@ static int perf_c2c__report(int argc, const char **argv) goto out; } + err = setup_callchain(session->evlist); + if (err) + goto out_session; + if (symbol__init(&session->header.env) < 0) goto out_session; |