• Arnaldo Carvalho de Melo's avatar
    perf evlist: Move the mmap array from perf_evsel · 70db7533
    Arnaldo Carvalho de Melo authored
    
    
    Adopting the new model used in 'perf record', where we don't have a map
    per thread per cpu, instead we have an mmap per cpu, established on the
    first fd for that cpu and ask the kernel using the
    PERF_EVENT_IOC_SET_OUTPUT ioctl to send events for the other fds on that
    cpu for the one with the mmap.
    
    The methods moved from perf_evsel to perf_evlist, but for easing review
    they were modified in place, in evsel.c, the next patch will move the
    migrated methods to evlist.c.
    
    With this 'perf top' now uses the same mmap model used by 'perf record'
    and the next patches will make 'perf record' use these new routines,
    establishing a common codebase for both tools.
    
    Cc: Frederic Weisbecker <fweisbec@gmail.com>
    Cc: Ingo Molnar <mingo@elte.hu>
    Cc: Mike Galbraith <efault@gmx.de>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Stephane Eranian <eranian@google.com>
    Cc: Tom Zanussi <tzanussi@gmail.com>
    LKML-Reference: <new-submission>
    Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    70db7533