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

   1 #include "perf.h"
   2 #include "util/util.h"
   3 #include "util/debug.h"
   4 #include "util/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_END
  32 };
  33
  34 int
  35 parse_branch_stack(const struct option *opt, const char *str, int unset)
  36 {
  37 #define ONLY_PLM \
  38         (PERF_SAMPLE_BRANCH_USER        |\
  39          PERF_SAMPLE_BRANCH_KERNEL      |\
  40          PERF_SAMPLE_BRANCH_HV)
  41
  42         uint64_t *mode = (uint64_t *)opt->value;
  43         const struct branch_mode *br;
  44         char *s, *os = NULL, *p;
  45         int ret = -1;
  46
  47         if (unset)
  48                 return 0;
  49
  50         /*
  51          * cannot set it twice, -b + --branch-filter for instance
  52          */
  53         if (*mode)
  54                 return -1;
  55
  56         /* str may be NULL in case no arg is passed to -b */
  57         if (str) {
  58                 /* because str is read-only */
  59                 s = os = strdup(str);
  60                 if (!s)
  61                         return -1;
  62
  63                 for (;;) {
  64                         p = strchr(s, ',');
  65                         if (p)
  66                                 *p = '\0';
  67
  68                         for (br = branch_modes; br->name; br++) {
  69                                 if (!strcasecmp(s, br->name))
  70                                         break;
  71                         }
  72                         if (!br->name) {
  73                                 ui__warning("unknown branch filter %s,"
  74                                             " check man page\n", s);
  75                                 goto error;
  76                         }
  77
  78                         *mode |= br->mode;
  79
  80                         if (!p)
  81                                 break;
  82
  83                         s = p + 1;
  84                 }
  85         }
  86         ret = 0;
  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 }