Merge tag 'drm-next-5.5-2019-10-09' of git://people.freedesktop.org/~agd5f/linux...
[linux-2.6-microblaze.git] / tools / perf / util / parse-branch-options.c
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
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
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 }