• Tom Zanussi's avatar
    perf trace: Add interface to access perf data from Perl handlers · d1b93772
    Tom Zanussi authored
    The Perl scripting support for perf trace allows most of a trace
    event's data to be accessed directly as handler arguments, but
    not all of it e.g. the less common fields aren't passed in.  To
    give scripts access to the other fields and/or any other data or
    metadata in the main perf executable that might be useful, a way
    to access the C data in perf from Perl is needed; this patch
    uses the Perl XS facility to do it for the common_xxx event
    fields not passed to handler functions.
    
    Context.pm exports three functions to Perl scripts that access
    fields for the current event by calling back into perf:
    common_pc(), common_flags() and common_lock_depth().  Support
    for common_flags() field values was added to Core.pm and a
    script used to sanity check these and other basic scripting
    features, check-perf-trace.pl, was also added.
    Signed-off-by: default avatarTom Zanussi <tzanussi@gmail.com>
    Cc: fweisbec@gmail.com
    Cc: rostedt@goodmis.org
    Cc: anton@samba.org
    Cc: hch@infradead.org
    LKML-Reference: <1259133352-23685-6-git-send-email-tzanussi@gmail.com>
    Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
    d1b93772
check-perf-trace.pl 2.56 KB