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Subject[PATCH v4 4/8] perf, tools, script: Allow sym and dso without ip, addr
Date
From: Andi Kleen <ak@linux.intel.com>

Currently sym and dso require printing ip and addr because
the print function is tied to those outputs. With callindent
it makes sense to print the symbol or dso without numerical
IP or ADDR. So change the dependency check to only check the
underlying attribute.

Also the branch target output relies on the user_set flag to determine
if the branch target should be implicitely printed. When
modifying the fields with + or - also set user_set,
so that ADDR can be removed. We also need to set wildcard_set
to make the initial sanity check pass.

This allows to remove a lot of noise in callindent output by
dropping the numerical addresses, which are not all that useful.

Before

% perf script --itrace=cr -F +callindent
swapper 0 [000] 156546.354971: 1 branches: pt_config 0 [unknown] ([unknown]) => ffffffff81010486 pt_config ([kernel.kallsyms])
swapper 0 [000] 156546.354971: 1 branches: pt_config ffffffff81010499 pt_config ([kernel.kallsyms]) => ffffffff8101063e pt_event_add ([kernel.kallsyms])
swapper 0 [000] 156546.354971: 1 branches: pt_event_add ffffffff81010635 pt_event_add ([kernel.kallsyms]) => ffffffff8115e687 event_sched_in.isra.107 ([kernel.kallsyms])
swapper 0 [000] 156546.354971: 1 branches: perf_pmu_enable ffffffff8115e726 event_sched_in.isra.107 ([kernel.kallsyms]) => ffffffff811579b0 perf_pmu_enable ([kernel.kallsyms])
swapper 0 [000] 156546.354971: 1 branches: perf_pmu_nop_void ffffffff81151730 perf_pmu_nop_void ([kernel.kallsyms]) => ffffffff8115e72b event_sched_in.isra.107 ([kernel.kallsyms])
swapper 0 [000] 156546.354971: 1 branches: event_sched_in.isra.107 ffffffff8115e737 event_sched_in.isra.107 ([kernel.kallsyms]) => ffffffff8115e7a5 group_sched_in ([kernel.kallsyms])
swapper 0 [000] 156546.354971: 1 branches: __x86_indirect_thunk_rax ffffffff8115e7f6 group_sched_in ([kernel.kallsyms]) => ffffffff81a03000 __x86_indirect_thunk_rax ([kernel.kallsyms])

After

% perf script --itrace=cr -F +callindent,-ip,-sym,-symoff
swapper 0 [000] 156546.354971: 1 branches: pt_config
swapper 0 [000] 156546.354971: 1 branches: pt_config
swapper 0 [000] 156546.354971: 1 branches: pt_event_add
swapper 0 [000] 156546.354971: 1 branches: perf_pmu_enable
swapper 0 [000] 156546.354971: 1 branches: perf_pmu_nop_void
swapper 0 [000] 156546.354971: 1 branches: event_sched_in.isra.107
swapper 0 [000] 156546.354971: 1 branches: __x86_indirect_thunk_rax
swapper 0 [000] 156546.354971: 1 branches: perf_pmu_nop_int
swapper 0 [000] 156546.354971: 1 branches: group_sched_in
swapper 0 [000] 156546.354971: 1 branches: event_filter_match
swapper 0 [000] 156546.354971: 1 branches: event_filter_match
swapper 0 [000] 156546.354971: 1 branches: group_sched_in

Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
tools/perf/builtin-script.c | 17 ++++++++++-------
1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 66daa7df68c5..d7d454d10074 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -407,9 +407,10 @@ static int perf_evsel__check_attr(struct perf_evsel *evsel,
PERF_OUTPUT_WEIGHT))
return -EINVAL;

- if (PRINT_FIELD(SYM) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
+ if (PRINT_FIELD(SYM) &&
+ !(evsel->attr.sample_type & (PERF_SAMPLE_IP|PERF_SAMPLE_ADDR))) {
pr_err("Display of symbols requested but neither sample IP nor "
- "sample address\nis selected. Hence, no addresses to convert "
+ "sample address\navailable. Hence, no addresses to convert "
"to symbols.\n");
return -EINVAL;
}
@@ -418,10 +419,9 @@ static int perf_evsel__check_attr(struct perf_evsel *evsel,
"selected.\n");
return -EINVAL;
}
- if (PRINT_FIELD(DSO) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR) &&
- !PRINT_FIELD(BRSTACK) && !PRINT_FIELD(BRSTACKSYM) && !PRINT_FIELD(BRSTACKOFF)) {
- pr_err("Display of DSO requested but no address to convert. Select\n"
- "sample IP, sample address, brstack, brstacksym, or brstackoff.\n");
+ if (PRINT_FIELD(DSO) &&
+ !(evsel->attr.sample_type & (PERF_SAMPLE_IP|PERF_SAMPLE_ADDR))) {
+ pr_err("Display of DSO requested but no address to convert.\n");
return -EINVAL;
}
if (PRINT_FIELD(SRCLINE) && !PRINT_FIELD(IP)) {
@@ -2490,6 +2490,8 @@ static int parse_output_fields(const struct option *opt __maybe_unused,
output[j].fields &= ~all_output_options[i].field;
else
output[j].fields |= all_output_options[i].field;
+ output[j].user_set = true;
+ output[j].wildcard_set = true;
}
}
} else {
@@ -2500,7 +2502,8 @@ static int parse_output_fields(const struct option *opt __maybe_unused,
rc = -EINVAL;
goto out;
}
- output[type].fields |= all_output_options[i].field;
+ output[type].user_set = true;
+ output[type].wildcard_set = true;
}
}

--
2.17.1

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