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("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_END
40 };
41
parse_branch_str(const char * str,__u64 * mode)42 int parse_branch_str(const char *str, __u64 *mode)
43 {
44 #define ONLY_PLM \
45 (PERF_SAMPLE_BRANCH_USER |\
46 PERF_SAMPLE_BRANCH_KERNEL |\
47 PERF_SAMPLE_BRANCH_HV)
48
49 int ret = 0;
50 char *p, *s;
51 char *os = NULL;
52 const struct branch_mode *br;
53
54 if (str == NULL) {
55 *mode = PERF_SAMPLE_BRANCH_ANY;
56 return 0;
57 }
58
59 /* because str is read-only */
60 s = os = strdup(str);
61 if (!s)
62 return -1;
63
64 for (;;) {
65 p = strchr(s, ',');
66 if (p)
67 *p = '\0';
68
69 for (br = branch_modes; br->name; br++) {
70 if (!strcasecmp(s, br->name))
71 break;
72 }
73 if (!br->name) {
74 ret = -1;
75 pr_warning("unknown branch filter %s,"
76 " check man page\n", s);
77 goto error;
78 }
79
80 *mode |= br->mode;
81
82 if (!p)
83 break;
84
85 s = p + 1;
86 }
87
88 /* default to any branch */
89 if ((*mode & ~ONLY_PLM) == 0) {
90 *mode = PERF_SAMPLE_BRANCH_ANY;
91 }
92 error:
93 free(os);
94 return ret;
95 }
96
97 int
parse_branch_stack(const struct option * opt,const char * str,int unset)98 parse_branch_stack(const struct option *opt, const char *str, int unset)
99 {
100 __u64 *mode = (__u64 *)opt->value;
101
102 if (unset)
103 return 0;
104
105 /*
106 * cannot set it twice, -b + --branch-filter for instance
107 */
108 if (*mode) {
109 pr_err("Error: Can't use --branch-any (-b) with --branch-filter (-j).\n");
110 return -1;
111 }
112
113 return parse_branch_str(str, mode);
114 }
115