1// SPDX-License-Identifier: GPL-2.0
2#include "util/debug.h"
3#include "util/event.h"
4#include <subcmd/parse-options.h>
5#include "util/parse-branch-options.h"
6#include <stdlib.h>
7#include <string.h>
8
9#define BRANCH_OPT(n, m) \
10 { .name = n, .mode = (m) }
11
12#define BRANCH_END { .name = NULL }
13
14struct branch_mode {
15 const char *name;
16 int mode;
17};
18
19static const struct branch_mode branch_modes[] = {
20 BRANCH_OPT("u", PERF_SAMPLE_BRANCH_USER),
21 BRANCH_OPT("k", PERF_SAMPLE_BRANCH_KERNEL),
22 BRANCH_OPT("hv", PERF_SAMPLE_BRANCH_HV),
23 BRANCH_OPT("any", PERF_SAMPLE_BRANCH_ANY),
24 BRANCH_OPT("any_call", PERF_SAMPLE_BRANCH_ANY_CALL),
25 BRANCH_OPT("any_ret", PERF_SAMPLE_BRANCH_ANY_RETURN),
26 BRANCH_OPT("ind_call", PERF_SAMPLE_BRANCH_IND_CALL),
27 BRANCH_OPT("abort_tx", PERF_SAMPLE_BRANCH_ABORT_TX),
28 BRANCH_OPT("in_tx", PERF_SAMPLE_BRANCH_IN_TX),
29 BRANCH_OPT("no_tx", PERF_SAMPLE_BRANCH_NO_TX),
30 BRANCH_OPT("cond", PERF_SAMPLE_BRANCH_COND),
31 BRANCH_OPT("ind_jmp", PERF_SAMPLE_BRANCH_IND_JUMP),
32 BRANCH_OPT("call", PERF_SAMPLE_BRANCH_CALL),
33 BRANCH_OPT("no_flags", PERF_SAMPLE_BRANCH_NO_FLAGS),
34 BRANCH_OPT("no_cycles", PERF_SAMPLE_BRANCH_NO_CYCLES),
35 BRANCH_OPT("save_type", PERF_SAMPLE_BRANCH_TYPE_SAVE),
36 BRANCH_OPT("stack", PERF_SAMPLE_BRANCH_CALL_STACK),
37 BRANCH_OPT("hw_index", PERF_SAMPLE_BRANCH_HW_INDEX),
38 BRANCH_OPT("priv", PERF_SAMPLE_BRANCH_PRIV_SAVE),
39 BRANCH_OPT("counter", PERF_SAMPLE_BRANCH_COUNTERS),
40 BRANCH_END
41};
42
43int parse_branch_str(const char *str, __u64 *mode)
44{
45#define ONLY_PLM \
46 (PERF_SAMPLE_BRANCH_USER |\
47 PERF_SAMPLE_BRANCH_KERNEL |\
48 PERF_SAMPLE_BRANCH_HV)
49
50 int ret = 0;
51 char *p, *s;
52 char *os = NULL;
53 const struct branch_mode *br;
54
55 if (str == NULL) {
56 *mode = PERF_SAMPLE_BRANCH_ANY;
57 return 0;
58 }
59
60 /* because str is read-only */
61 s = os = strdup(str);
62 if (!s)
63 return -1;
64
65 for (;;) {
66 p = strchr(s, ',');
67 if (p)
68 *p = '\0';
69
70 for (br = branch_modes; br->name; br++) {
71 if (!strcasecmp(s, br->name))
72 break;
73 }
74 if (!br->name) {
75 ret = -1;
76 pr_warning("unknown branch filter %s,"
77 " check man page\n", s);
78 goto error;
79 }
80
81 *mode |= br->mode;
82
83 if (!p)
84 break;
85
86 s = p + 1;
87 }
88
89 /* default to any branch */
90 if ((*mode & ~ONLY_PLM) == 0) {
91 *mode = PERF_SAMPLE_BRANCH_ANY;
92 }
93error:
94 free(os);
95 return ret;
96}
97
98int
99parse_branch_stack(const struct option *opt, const char *str, int unset)
100{
101 __u64 *mode = (__u64 *)opt->value;
102
103 if (unset)
104 return 0;
105
106 /*
107 * cannot set it twice, -b + --branch-filter for instance
108 */
109 if (*mode) {
110 pr_err("Error: Can't use --branch-any (-b) with --branch-filter (-j).\n");
111 return -1;
112 }
113
114 return parse_branch_str(str, mode);
115}
116

source code of linux/tools/perf/util/parse-branch-options.c