root/tools/perf/trace/beauty/kcmp.c

DEFINITIONS

1. syscall_arg__scnprintf_kcmp_idx
2. kcmp__scnprintf_type
3. syscall_arg__scnprintf_kcmp_type

   1 // SPDX-License-Identifier: LGPL-2.1
   2 /*
   3  * trace/beauty/kcmp.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 <sys/types.h>
  11 #include <machine.h>
  12 #include <uapi/linux/kcmp.h>
  13 
  14 #include "trace/beauty/generated/kcmp_type_array.c"
  15 
  16 size_t syscall_arg__scnprintf_kcmp_idx(char *bf, size_t size, struct syscall_arg *arg)
  17 {
  18         unsigned long fd = arg->val;
  19         int type = syscall_arg__val(arg, 2);
  20         pid_t pid;
  21 
  22         if (type != KCMP_FILE)
  23                 return syscall_arg__scnprintf_long(bf, size, arg);
  24 
  25         pid = syscall_arg__val(arg, arg->idx == 3 ? 0 : 1); /* idx1 -> pid1, idx2 -> pid2 */
  26         return pid__scnprintf_fd(arg->trace, pid, fd, bf, size);
  27 }
  28 
  29 static size_t kcmp__scnprintf_type(int type, char *bf, size_t size, bool show_prefix)
  30 {
  31         static DEFINE_STRARRAY(kcmp_types, "KCMP_");
  32         return strarray__scnprintf(&strarray__kcmp_types, bf, size, "%d", show_prefix, type);
  33 }
  34 
  35 size_t syscall_arg__scnprintf_kcmp_type(char *bf, size_t size, struct syscall_arg *arg)
  36 {
  37         unsigned long type = arg->val;
  38 
  39         if (type != KCMP_FILE)
  40                 arg->mask |= (1 << 3) | (1 << 4); /* Ignore idx1 and idx2 */
  41 
  42         return kcmp__scnprintf_type(type, bf, size, arg->show_string_prefix);
  43 }