tools/perf/util/parse-branch-options.c

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