GNU Linux-libre 4.19.211-gnu1
[releases.git] / tools / perf / util / parse-branch-options.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include "perf.h"
3 #include "util/util.h"
4 #include "util/debug.h"
5 #include <subcmd/parse-options.h>
6 #include "util/parse-branch-options.h"
7
8 #define BRANCH_OPT(n, m) \
9         { .name = n, .mode = (m) }
10
11 #define BRANCH_END { .name = NULL }
12
13 struct branch_mode {
14         const char *name;
15         int mode;
16 };
17
18 static const struct branch_mode branch_modes[] = {
19         BRANCH_OPT("u", PERF_SAMPLE_BRANCH_USER),
20         BRANCH_OPT("k", PERF_SAMPLE_BRANCH_KERNEL),
21         BRANCH_OPT("hv", PERF_SAMPLE_BRANCH_HV),
22         BRANCH_OPT("any", PERF_SAMPLE_BRANCH_ANY),
23         BRANCH_OPT("any_call", PERF_SAMPLE_BRANCH_ANY_CALL),
24         BRANCH_OPT("any_ret", PERF_SAMPLE_BRANCH_ANY_RETURN),
25         BRANCH_OPT("ind_call", PERF_SAMPLE_BRANCH_IND_CALL),
26         BRANCH_OPT("abort_tx", PERF_SAMPLE_BRANCH_ABORT_TX),
27         BRANCH_OPT("in_tx", PERF_SAMPLE_BRANCH_IN_TX),
28         BRANCH_OPT("no_tx", PERF_SAMPLE_BRANCH_NO_TX),
29         BRANCH_OPT("cond", PERF_SAMPLE_BRANCH_COND),
30         BRANCH_OPT("ind_jmp", PERF_SAMPLE_BRANCH_IND_JUMP),
31         BRANCH_OPT("call", PERF_SAMPLE_BRANCH_CALL),
32         BRANCH_OPT("save_type", PERF_SAMPLE_BRANCH_TYPE_SAVE),
33         BRANCH_END
34 };
35
36 int parse_branch_str(const char *str, __u64 *mode)
37 {
38 #define ONLY_PLM \
39         (PERF_SAMPLE_BRANCH_USER        |\
40          PERF_SAMPLE_BRANCH_KERNEL      |\
41          PERF_SAMPLE_BRANCH_HV)
42
43         int ret = 0;
44         char *p, *s;
45         char *os = NULL;
46         const struct branch_mode *br;
47
48         if (str == NULL) {
49                 *mode = PERF_SAMPLE_BRANCH_ANY;
50                 return 0;
51         }
52
53         /* because str is read-only */
54         s = os = strdup(str);
55         if (!s)
56                 return -1;
57
58         for (;;) {
59                 p = strchr(s, ',');
60                 if (p)
61                         *p = '\0';
62
63                 for (br = branch_modes; br->name; br++) {
64                         if (!strcasecmp(s, br->name))
65                                 break;
66                 }
67                 if (!br->name) {
68                         ret = -1;
69                         pr_warning("unknown branch filter %s,"
70                                     " check man page\n", s);
71                         goto error;
72                 }
73
74                 *mode |= br->mode;
75
76                 if (!p)
77                         break;
78
79                 s = p + 1;
80         }
81
82         /* default to any branch */
83         if ((*mode & ~ONLY_PLM) == 0) {
84                 *mode = PERF_SAMPLE_BRANCH_ANY;
85         }
86 error:
87         free(os);
88         return ret;
89 }
90
91 int
92 parse_branch_stack(const struct option *opt, const char *str, int unset)
93 {
94         __u64 *mode = (__u64 *)opt->value;
95
96         if (unset)
97                 return 0;
98
99         /*
100          * cannot set it twice, -b + --branch-filter for instance
101          */
102         if (*mode)
103                 return -1;
104
105         return parse_branch_str(str, mode);
106 }