tools/perf/trace/beauty/pkey_alloc.c

   1 /*
   2  * trace/beauty/pkey_alloc.c
   3  *
   4  *  Copyright (C) 2017, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
   5  *
   6  * Released under the GPL v2. (and only v2, not any later version)
   7  */
   8
   9 #include "trace/beauty/beauty.h"
  10 #include <linux/kernel.h>
  11 #include <linux/log2.h>
  12
  13 static size_t pkey_alloc__scnprintf_access_rights(int access_rights, char *bf, size_t size)
  14 {
  15         int i, printed = 0;
  16
  17 #include "trace/beauty/generated/pkey_alloc_access_rights_array.c"
  18         static DEFINE_STRARRAY(pkey_alloc_access_rights);
  19
  20         if (access_rights == 0) {
  21                 const char *s = strarray__pkey_alloc_access_rights.entries[0];
  22                 if (s)
  23                         return scnprintf(bf, size, "%s", s);
  24                 return scnprintf(bf, size, "%d", 0);
  25         }
  26
  27         for (i = 1; i < strarray__pkey_alloc_access_rights.nr_entries; ++i) {
  28                 int bit = 1 << (i - 1);
  29
  30                 if (!(access_rights & bit))
  31                         continue;
  32
  33                 if (printed != 0)
  34                         printed += scnprintf(bf + printed, size - printed, "|");
  35
  36                 if (strarray__pkey_alloc_access_rights.entries[i] != NULL)
  37                         printed += scnprintf(bf + printed, size - printed, "%s", strarray__pkey_alloc_access_rights.entries[i]);
  38                 else
  39                         printed += scnprintf(bf + printed, size - printed, "0x%#", bit);
  40         }
  41
  42         return printed;
  43 }
  44
  45 size_t syscall_arg__scnprintf_pkey_alloc_access_rights(char *bf, size_t size, struct syscall_arg *arg)
  46 {
  47         unsigned long cmd = arg->val;
  48
  49         return pkey_alloc__scnprintf_access_rights(cmd, bf, size);
  50 }