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_OPT("priv", PERF_SAMPLE_BRANCH_PRIV_SAVE),
36 BRANCH_END
37 };
38
parse_branch_str(const char * str,__u64 * mode)39 int parse_branch_str(const char *str, __u64 *mode)
40 {
41 #define ONLY_PLM \
42 (PERF_SAMPLE_BRANCH_USER |\
43 PERF_SAMPLE_BRANCH_KERNEL |\
44 PERF_SAMPLE_BRANCH_HV)
45
46 int ret = 0;
47 char *p, *s;
48 char *os = NULL;
49 const struct branch_mode *br;
50
51 if (str == NULL) {
52 *mode = PERF_SAMPLE_BRANCH_ANY;
53 return 0;
54 }
55
56 /* because str is read-only */
57 s = os = strdup(str);
58 if (!s)
59 return -1;
60
61 for (;;) {
62 p = strchr(s, ',');
63 if (p)
64 *p = '\0';
65
66 for (br = branch_modes; br->name; br++) {
67 if (!strcasecmp(s, br->name))
68 break;
69 }
70 if (!br->name) {
71 ret = -1;
72 pr_warning("unknown branch filter %s,"
73 " check man page\n", s);
74 goto error;
75 }
76
77 *mode |= br->mode;
78
79 if (!p)
80 break;
81
82 s = p + 1;
83 }
84
85 /* default to any branch */
86 if ((*mode & ~ONLY_PLM) == 0) {
87 *mode = PERF_SAMPLE_BRANCH_ANY;
88 }
89 error:
90 free(os);
91 return ret;
92 }
93
94 int
parse_branch_stack(const struct option * opt,const char * str,int unset)95 parse_branch_stack(const struct option *opt, const char *str, int unset)
96 {
97 __u64 *mode = (__u64 *)opt->value;
98
99 if (unset)
100 return 0;
101
102 /*
103 * cannot set it twice, -b + --branch-filter for instance
104 */
105 if (*mode) {
106 pr_err("Error: Can't use --branch-any (-b) with --branch-filter (-j).\n");
107 return -1;
108 }
109
110 return parse_branch_str(str, mode);
111 }
112