• Stephane Eranian's avatar
    perf tools: Add attr->mmap2 support · 5c5e854b
    Stephane Eranian authored
    This patch adds support for the new PERF_RECORD_MMAP2 record type
    exposed by the kernel. This is an extended PERF_RECORD_MMAP record.
    
    It adds for each file-backed mapping the device major, minor number and
    the inode number and generation.
    
    This triplet uniquely identifies the source of a file-backed mapping. It
    can be used to detect identical virtual mappings between processes, for
    instance.
    
    The patch will prefer MMAP2 over MMAP.
    Signed-off-by: default avatarStephane Eranian <eranian@google.com>
    Cc: Andi Kleen <ak@linux.intel.com>
    Cc: David Ahern <dsahern@gmail.com>
    Cc: Ingo Molnar <mingo@elte.hu>
    Cc: Jiri Olsa <jolsa@redhat.com>
    Cc: Namhyung Kim <namhyung.kim@lge.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Link: http://lkml.kernel.org/r/1377079825-19057-3-git-send-email-eranian@google.com
    [ Cope with 314add6b "Change machine__findnew_thread() to set thread pid",
      fix 'perf test' regression test entry affected,
      use perf_missing_features.mmap2 to fallback to not using .mmap2 in older kernels,
      so that new tools can work with kernels where this feature is not present ]
    Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    5c5e854b
builtin-annotate.c 9.33 KB