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
14 struct branch_mode {
15 const char *name;
16 int mode;
17 };
18
19 static 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("save_type", PERF_SAMPLE_BRANCH_TYPE_SAVE),
34 BRANCH_OPT("stack", PERF_SAMPLE_BRANCH_CALL_STACK),
35 BRANCH_END
36 };
37
parse_branch_str(const char * str,__u64 * mode)38 int parse_branch_str(const char *str, __u64 *mode)
39 {
40 #define ONLY_PLM \
41 (PERF_SAMPLE_BRANCH_USER |\
42 PERF_SAMPLE_BRANCH_KERNEL |\
43 PERF_SAMPLE_BRANCH_HV)
44
45 int ret = 0;
46 char *p, *s;
47 char *os = NULL;
48 const struct branch_mode *br;
49
50 if (str == NULL) {
51 *mode = PERF_SAMPLE_BRANCH_ANY;
52 return 0;
53 }
54
55 /* because str is read-only */
56 s = os = strdup(str);
57 if (!s)
58 return -1;
59
60 for (;;) {
61 p = strchr(s, ',');
62 if (p)
63 *p = '\0';
64
65 for (br = branch_modes; br->name; br++) {
66 if (!strcasecmp(s, br->name))
67 break;
68 }
69 if (!br->name) {
70 ret = -1;
71 pr_warning("unknown branch filter %s,"
72 " check man page\n", s);
73 goto error;
74 }
75
76 *mode |= br->mode;
77
78 if (!p)
79 break;
80
81 s = p + 1;
82 }
83
84 /* default to any branch */
85 if ((*mode & ~ONLY_PLM) == 0) {
86 *mode = PERF_SAMPLE_BRANCH_ANY;
87 }
88 error:
89 free(os);
90 return ret;
91 }
92
93 int
parse_branch_stack(const struct option * opt,const char * str,int unset)94 parse_branch_stack(const struct option *opt, const char *str, int unset)
95 {
96 __u64 *mode = (__u64 *)opt->value;
97
98 if (unset)
99 return 0;
100
101 /*
102 * cannot set it twice, -b + --branch-filter for instance
103 */
104 if (*mode)
105 return -1;
106
107 return parse_branch_str(str, mode);
108 }
109