perf trace: Add beautifier for madvise behaviour/advice parm

  [root@zoo ~]# perf trace -e madvise -a
    35299.631 ( 0.019 ms): 19553 madvise(start: 0x7f5b101d4000, len_in: 4063232, behavior: DONTNEED    ) = 0

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-a3twa1ia5sxt0hsxqika4efq@git.kernel.org
[ ifdef DO(NT)?DUMP to fix build on f16, from David Ahern ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 034152c7e974e56bcd3ad04b6654facf75c303e7..b72afc73f9a7a5309bed5fb508e83197cb699929 100644 (file)
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -88,6 +88,43 @@ static size_t syscall_arg__scnprintf_mmap_flags(char *bf, size_t size, unsigned
 
 #define SCA_MMAP_FLAGS syscall_arg__scnprintf_mmap_flags
 
+static size_t syscall_arg__scnprintf_madvise_behavior(char *bf, size_t size, unsigned long arg)
+{
+       int behavior = arg;
+
+       switch (behavior) {
+#define        P_MADV_BHV(n) case MADV_##n: return scnprintf(bf, size, #n)
+       P_MADV_BHV(NORMAL);
+       P_MADV_BHV(RANDOM);
+       P_MADV_BHV(SEQUENTIAL);
+       P_MADV_BHV(WILLNEED);
+       P_MADV_BHV(DONTNEED);
+       P_MADV_BHV(REMOVE);
+       P_MADV_BHV(DONTFORK);
+       P_MADV_BHV(DOFORK);
+       P_MADV_BHV(HWPOISON);
+#ifdef MADV_SOFT_OFFLINE
+       P_MADV_BHV(SOFT_OFFLINE);
+#endif
+       P_MADV_BHV(MERGEABLE);
+       P_MADV_BHV(UNMERGEABLE);
+       P_MADV_BHV(HUGEPAGE);
+       P_MADV_BHV(NOHUGEPAGE);
+#ifdef MADV_DONTDUMP
+       P_MADV_BHV(DONTDUMP);
+#endif
+#ifdef MADV_DODUMP
+       P_MADV_BHV(DODUMP);
+#endif
+#undef P_MADV_PHV
+       default: break;
+       }
+
+       return scnprintf(bf, size, "%#x", behavior);
+}
+
+#define SCA_MADV_BHV syscall_arg__scnprintf_madvise_behavior
+
 static struct syscall_fmt {
        const char *name;
        const char *alias;
@@ -108,6 +145,9 @@ static struct syscall_fmt {
        { .name     = "ioctl",      .errmsg = true,
          .arg_scnprintf = { [2] = SCA_HEX, /* arg */ }, },
        { .name     = "lstat",      .errmsg = true, .alias = "newlstat", },
+       { .name     = "madvise",    .errmsg = true,
+         .arg_scnprintf = { [0] = SCA_HEX,      /* start */
+                            [2] = SCA_MADV_BHV, /* behavior */ }, },
        { .name     = "mmap",       .hexret = true,
          .arg_scnprintf = { [0] = SCA_HEX,       /* addr */
                             [2] = SCA_MMAP_PROT, /* prot */