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

DEFINITIONS

1. syscall_arg__scnprintf_mmap_prot
2. mmap__scnprintf_flags
3. syscall_arg__scnprintf_mmap_flags
4. syscall_arg__scnprintf_mremap_flags
5. madvise__scnprintf_behavior
6. syscall_arg__scnprintf_madvise_behavior

   1 // SPDX-License-Identifier: LGPL-2.1
   2 #include <uapi/linux/mman.h>
   3 #include <linux/log2.h>
   4 
   5 static size_t syscall_arg__scnprintf_mmap_prot(char *bf, size_t size,
   6                                                struct syscall_arg *arg)
   7 {
   8         const char *prot_prefix = "PROT_";
   9         int printed = 0, prot = arg->val;
  10         bool show_prefix = arg->show_string_prefix;
  11 
  12         if (prot == PROT_NONE)
  13                 return scnprintf(bf, size, "%sNONE", show_prefix ? prot_prefix : "");
  14 #define P_MMAP_PROT(n) \
  15         if (prot & PROT_##n) { \
  16                 printed += scnprintf(bf + printed, size - printed, "%s%s%s", printed ? "|" : "", show_prefix ? prot_prefix :"", #n); \
  17                 prot &= ~PROT_##n; \
  18         }
  19 
  20         P_MMAP_PROT(READ);
  21         P_MMAP_PROT(WRITE);
  22         P_MMAP_PROT(EXEC);
  23         P_MMAP_PROT(SEM);
  24         P_MMAP_PROT(GROWSDOWN);
  25         P_MMAP_PROT(GROWSUP);
  26 #undef P_MMAP_PROT
  27 
  28         if (prot)
  29                 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", prot);
  30 
  31         return printed;
  32 }
  33 
  34 #define SCA_MMAP_PROT syscall_arg__scnprintf_mmap_prot
  35 
  36 static size_t mmap__scnprintf_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)
  37 {
  38 #include "trace/beauty/generated/mmap_flags_array.c"
  39        static DEFINE_STRARRAY(mmap_flags, "MAP_");
  40 
  41        return strarray__scnprintf_flags(&strarray__mmap_flags, bf, size, show_prefix, flags);
  42 }
  43 
  44 static size_t syscall_arg__scnprintf_mmap_flags(char *bf, size_t size,
  45                                                 struct syscall_arg *arg)
  46 {
  47         unsigned long flags = arg->val;
  48 
  49         if (flags & MAP_ANONYMOUS)
  50                 arg->mask |= (1 << 4) | (1 << 5); /* Mask 4th ('fd') and 5th ('offset') args, ignored */
  51 
  52         return mmap__scnprintf_flags(flags, bf, size, arg->show_string_prefix);
  53 }
  54 
  55 #define SCA_MMAP_FLAGS syscall_arg__scnprintf_mmap_flags
  56 
  57 static size_t syscall_arg__scnprintf_mremap_flags(char *bf, size_t size,
  58                                                   struct syscall_arg *arg)
  59 {
  60         const char *flags_prefix = "MREMAP_";
  61         bool show_prefix = arg->show_string_prefix;
  62         int printed = 0, flags = arg->val;
  63 
  64 #define P_MREMAP_FLAG(n) \
  65         if (flags & MREMAP_##n) { \
  66                 printed += scnprintf(bf + printed, size - printed, "%s%s%s", printed ? "|" : "", show_prefix ? flags_prefix : "", #n); \
  67                 flags &= ~MREMAP_##n; \
  68         }
  69 
  70         P_MREMAP_FLAG(MAYMOVE);
  71         P_MREMAP_FLAG(FIXED);
  72 #undef P_MREMAP_FLAG
  73 
  74         if (flags)
  75                 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
  76 
  77         return printed;
  78 }
  79 
  80 #define SCA_MREMAP_FLAGS syscall_arg__scnprintf_mremap_flags
  81 
  82 static size_t madvise__scnprintf_behavior(int behavior, char *bf, size_t size)
  83 {
  84 #include "trace/beauty/generated/madvise_behavior_array.c"
  85        static DEFINE_STRARRAY(madvise_advices, "MADV_");
  86 
  87        if (behavior < strarray__madvise_advices.nr_entries && strarray__madvise_advices.entries[behavior] != NULL)
  88                return scnprintf(bf, size, "MADV_%s", strarray__madvise_advices.entries[behavior]);
  89 
  90        return scnprintf(bf, size, "%#", behavior);
  91 }
  92 
  93 static size_t syscall_arg__scnprintf_madvise_behavior(char *bf, size_t size,
  94                                                       struct syscall_arg *arg)
  95 {
  96         return madvise__scnprintf_behavior(arg->val, bf, size);
  97 }
  98 
  99 #define SCA_MADV_BHV syscall_arg__scnprintf_madvise_behavior