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authorArnaldo Carvalho de Melo <acme@redhat.com>2016-04-25 16:45:29 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-04-25 16:48:01 -0300
commita213b92e15cc5019156594c8f3ae9170915aac9f (patch)
treeed26a8197a43d7f4658aadc2b7744cf31ab2e0dc /tools/perf/util
parent1df54290463e84b7b5eb26e5e6472167c3749901 (diff)
perf evlist: Decode perf_event_attr->branch_sample_type
While trying to use --call-graph lbr in 'perf trace', since we only are interested in the callchain for userspace, up to the callchain, I found that 'perf evlist' is not decoding the branch_sample_type field, fix it. Before: # perf record --call-graph lbr usleep 1 # perf evlist -v cycles:ppp: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|CALLCHAIN|CPU|PERIOD|BRANCH_STACK, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, task: 1, precise_ip: 3, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1, branch_sample_type: 51201 ^^^^^^^^^^^^^^^^^^^^^^^^^ After: # perf evlist -v cycles:ppp: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|CALLCHAIN|CPU|PERIOD|BRANCH_STACK, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, task: 1, precise_ip: 3, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1, branch_sample_type: USER|CALL_STACK|NO_FLAGS|NO_CYCLES ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-hozai7974u0ulgx13k96fcaw@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
-rw-r--r--tools/perf/util/evsel.c18
1 files changed, 17 insertions, 1 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 545bb3f0b2b0..334364e25bbe 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -1231,6 +1231,21 @@ static void __p_sample_type(char *buf, size_t size, u64 value)
__p_bits(buf, size, value, bits);
}
+static void __p_branch_sample_type(char *buf, size_t size, u64 value)
+{
+#define bit_name(n) { PERF_SAMPLE_BRANCH_##n, #n }
+ struct bit_names bits[] = {
+ bit_name(USER), bit_name(KERNEL), bit_name(HV), bit_name(ANY),
+ bit_name(ANY_CALL), bit_name(ANY_RETURN), bit_name(IND_CALL),
+ bit_name(ABORT_TX), bit_name(IN_TX), bit_name(NO_TX),
+ bit_name(COND), bit_name(CALL_STACK), bit_name(IND_JUMP),
+ bit_name(CALL), bit_name(NO_FLAGS), bit_name(NO_CYCLES),
+ { .name = NULL, }
+ };
+#undef bit_name
+ __p_bits(buf, size, value, bits);
+}
+
static void __p_read_format(char *buf, size_t size, u64 value)
{
#define bit_name(n) { PERF_FORMAT_##n, #n }
@@ -1249,6 +1264,7 @@ static void __p_read_format(char *buf, size_t size, u64 value)
#define p_unsigned(val) snprintf(buf, BUF_SIZE, "%"PRIu64, (uint64_t)(val))
#define p_signed(val) snprintf(buf, BUF_SIZE, "%"PRId64, (int64_t)(val))
#define p_sample_type(val) __p_sample_type(buf, BUF_SIZE, val)
+#define p_branch_sample_type(val) __p_branch_sample_type(buf, BUF_SIZE, val)
#define p_read_format(val) __p_read_format(buf, BUF_SIZE, val)
#define PRINT_ATTRn(_n, _f, _p) \
@@ -1305,7 +1321,7 @@ int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr,
PRINT_ATTRf(bp_type, p_unsigned);
PRINT_ATTRn("{ bp_addr, config1 }", bp_addr, p_hex);
PRINT_ATTRn("{ bp_len, config2 }", bp_len, p_hex);
- PRINT_ATTRf(branch_sample_type, p_unsigned);
+ PRINT_ATTRf(branch_sample_type, p_branch_sample_type);
PRINT_ATTRf(sample_regs_user, p_hex);
PRINT_ATTRf(sample_stack_user, p_unsigned);
PRINT_ATTRf(clockid, p_signed);