tools/perf/trace/beauty/clone.c

   1 // SPDX-License-Identifier: LGPL-2.1
   2 /*
   3  * trace/beauty/cone.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 #include <sys/types.h>
  12 #include <sched.h>
  13
  14 static size_t clone__scnprintf_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)
  15 {
  16 #include "trace/beauty/generated/clone_flags_array.c"
  17         static DEFINE_STRARRAY(clone_flags, "CLONE_");
  18
  19         return strarray__scnprintf_flags(&strarray__clone_flags, bf, size, show_prefix, flags);
  20 }
  21
  22 size_t syscall_arg__scnprintf_clone_flags(char *bf, size_t size, struct syscall_arg *arg)
  23 {
  24         unsigned long flags = arg->val;
  25         enum syscall_clone_args {
  26                 SCC_FLAGS         = (1 << 0),
  27                 SCC_CHILD_STACK   = (1 << 1),
  28                 SCC_PARENT_TIDPTR = (1 << 2),
  29                 SCC_CHILD_TIDPTR  = (1 << 3),
  30                 SCC_TLS           = (1 << 4),
  31         };
  32         if (!(flags & CLONE_PARENT_SETTID))
  33                 arg->mask |= SCC_PARENT_TIDPTR;
  34
  35         if (!(flags & (CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID)))
  36                 arg->mask |= SCC_CHILD_TIDPTR;
  37
  38         if (!(flags & CLONE_SETTLS))
  39                 arg->mask |= SCC_TLS;
  40
  41         return clone__scnprintf_flags(flags, bf, size, arg->show_string_prefix);
  42 }