diff options
| -rw-r--r-- | tools/perf/builtin-trace.c | 62 |
1 files changed, 56 insertions, 6 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 5618feb7d01a..e664001d5ed7 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -932,6 +932,37 @@ static int syscall_arg_fmt__cache_btf_enum(struct syscall_arg_fmt *arg_fmt, stru return arg_fmt->type == NULL ? -1 : 0; } +static bool syscall_arg__strtoul_btf_enum(char *bf, size_t size, struct syscall_arg *arg, u64 *val) +{ + const struct btf_type *bt; + char *type = arg->parm; + struct btf_enum *be; + struct btf *btf; + + trace__load_vmlinux_btf(arg->trace); + + btf = arg->trace->btf; + if (btf == NULL) + return false; + + if (syscall_arg_fmt__cache_btf_enum(arg->fmt, btf, type) < 0) + return false; + + bt = arg->fmt->type; + be = btf_enum(bt); + for (int i = 0; i < btf_vlen(bt); ++i, ++be) { + const char *name = btf__name_by_offset(btf, be->name_off); + int max_len = max(size, strlen(name)); + + if (strncmp(name, bf, max_len) == 0) { + *val = be->val; + return true; + } + } + + return false; +} + static size_t btf_enum_scnprintf(const struct btf_type *type, struct btf *btf, char *bf, size_t size, int val) { struct btf_enum *be = btf_enum(type); @@ -965,8 +996,16 @@ static size_t trace__btf_enum_scnprintf(struct trace *trace __maybe_unused, stru { return 0; } + +static bool syscall_arg__strtoul_btf_enum(char *bf __maybe_unused, size_t size __maybe_unused, + struct syscall_arg *arg __maybe_unused, u64 *val __maybe_unused) +{ + return false; +} #endif // HAVE_LIBBPF_SUPPORT +#define STUL_BTF_ENUM syscall_arg__strtoul_btf_enum + #define STRARRAY(name, array) \ { .scnprintf = SCA_STRARRAY, \ .strtoul = STUL_STRARRAY, \ @@ -1867,6 +1906,7 @@ syscall_arg_fmt__init_array(struct syscall_arg_fmt *arg, struct tep_format_field arg->scnprintf = SCA_FD; } else if (strstr(field->type, "enum") && use_btf != NULL) { *use_btf = arg->is_enum = true; + arg->strtoul = STUL_BTF_ENUM; } else { const struct syscall_arg_fmt *fmt = syscall_arg_fmt__find_by_name(field->name); @@ -3792,7 +3832,8 @@ static int ordered_events__deliver_event(struct ordered_events *oe, return __trace__deliver_event(trace, event->event); } -static struct syscall_arg_fmt *evsel__find_syscall_arg_fmt_by_name(struct evsel *evsel, char *arg) +static struct syscall_arg_fmt *evsel__find_syscall_arg_fmt_by_name(struct evsel *evsel, char *arg, + char **type) { struct tep_format_field *field; struct syscall_arg_fmt *fmt = __evsel__syscall_arg_fmt(evsel); @@ -3801,13 +3842,15 @@ static struct syscall_arg_fmt *evsel__find_syscall_arg_fmt_by_name(struct evsel return NULL; for (field = evsel->tp_format->format.fields; field; field = field->next, ++fmt) - if (strcmp(field->name, arg) == 0) + if (strcmp(field->name, arg) == 0) { + *type = field->type; return fmt; + } return NULL; } -static int trace__expand_filter(struct trace *trace __maybe_unused, struct evsel *evsel) +static int trace__expand_filter(struct trace *trace, struct evsel *evsel) { char *tok, *left = evsel->filter, *new_filter = evsel->filter; @@ -3840,14 +3883,14 @@ static int trace__expand_filter(struct trace *trace __maybe_unused, struct evsel struct syscall_arg_fmt *fmt; int left_size = tok - left, right_size = right_end - right; - char arg[128]; + char arg[128], *type; while (isspace(left[left_size - 1])) --left_size; scnprintf(arg, sizeof(arg), "%.*s", left_size, left); - fmt = evsel__find_syscall_arg_fmt_by_name(evsel, arg); + fmt = evsel__find_syscall_arg_fmt_by_name(evsel, arg, &type); if (fmt == NULL) { pr_err("\"%s\" not found in \"%s\", can't set filter \"%s\"\n", arg, evsel->name, evsel->filter); @@ -3860,9 +3903,16 @@ static int trace__expand_filter(struct trace *trace __maybe_unused, struct evsel if (fmt->strtoul) { u64 val; struct syscall_arg syscall_arg = { - .parm = fmt->parm, + .trace = trace, + .fmt = fmt, }; + if (fmt->is_enum) { + syscall_arg.parm = type; + } else { + syscall_arg.parm = fmt->parm; + } + if (fmt->strtoul(right, right_size, &syscall_arg, &val)) { char *n, expansion[19]; int expansion_lenght = scnprintf(expansion, sizeof(expansion), "%#" PRIx64, val); |