tools/perf/trace/beauty/pkey_alloc.c

   1 // SPDX-License-Identifier: LGPL-2.1
   2 /*
   3  * trace/beauty/pkey_alloc.c
   4  *
   5  *  Copyright (C) 2017, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
   6  */
   7
   8 #include "trace/beauty/beauty.h"
   9 #include <linux/kernel.h>
  10 #include <linux/log2.h>
  11
  12 size_t strarray__scnprintf_flags(struct strarray *sa, char *bf, size_t size, bool show_prefix, unsigned long flags)
  13 {
  14         int i, printed = 0;
  15
  16         if (flags == 0) {
  17                 const char *s = sa->entries[0];
  18                 if (s)
  19                         return scnprintf(bf, size, "%s%s", show_prefix ? sa->prefix : "", s);
  20                 return scnprintf(bf, size, "%d", 0);
  21         }
  22
  23         for (i = 1; i < sa->nr_entries; ++i) {
  24                 unsigned long bit = 1UL << (i - 1);
  25
  26                 if (!(flags & bit))
  27                         continue;
  28
  29                 if (printed != 0)
  30                         printed += scnprintf(bf + printed, size - printed, "|");
  31
  32                 if (sa->entries[i] != NULL)
  33                         printed += scnprintf(bf + printed, size - printed, "%s%s", show_prefix ? sa->prefix : "", sa->entries[i]);
  34                 else
  35                         printed += scnprintf(bf + printed, size - printed, "0x%#", bit);
  36         }
  37
  38         return printed;
  39 }
  40
  41 static size_t pkey_alloc__scnprintf_access_rights(int access_rights, char *bf, size_t size, bool show_prefix)
  42 {
  43 #include "trace/beauty/generated/pkey_alloc_access_rights_array.c"
  44         static DEFINE_STRARRAY(pkey_alloc_access_rights, "PKEY_");
  45
  46         return strarray__scnprintf_flags(&strarray__pkey_alloc_access_rights, bf, size, show_prefix, access_rights);
  47 }
  48
  49 size_t syscall_arg__scnprintf_pkey_alloc_access_rights(char *bf, size_t size, struct syscall_arg *arg)
  50 {
  51         unsigned long cmd = arg->val;
  52
  53         return pkey_alloc__scnprintf_access_rights(cmd, bf, size, arg->show_string_prefix);
  54 }