• Arnaldo Carvalho de Melo's avatar
    perf hists: Threaded addition and sorting of entries · 1980c2eb
    Arnaldo Carvalho de Melo authored
    By using a mutex just for inserting and rotating two hist_entry rb
    trees, so that when sorting we can get the last batch of entries created
    from the ring buffer, merge it with whatever we have processed so far
    and show the output while new entries are being added.
    
    The 'report' tool continues, for now, to do it without threading, but
    will use this in the future to allow visualization of results in long
    perf.data sessions while the entries are being processed.
    
    The new 'top' tool will be the first user.
    
    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-9b05atsn0q6m7fqgrug8fk2i@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    1980c2eb
evsel.c 9.71 KB