• Andi Kleen's avatar
    perf/x86: Use extended offcore mask on Haswell · 36bbb2f2
    Andi Kleen authored
    HSW-EP has a larger offcore mask than the client Haswell CPUs.
    It is the same mask as on Sandy/IvyBridge-EP. All of
    Haswell was using the client mask, so some bits were missing.
    
    On the client parts some bits were also missing compared
    to Sandy/IvyBridge, in particular the bits to match on a L4
    cache hit.
    
    The Haswell core in both client and server incarnations
    accepts the same bits (but some are nops), so we can use
    the same mask.
    
    So use the snbep extended mask, which is a superset of the
    client and the server, for all of Haswell.
    
    This allows specifying a number of extra offcore events, like
    for example for HSW-EP.
    
    % perf stat -e cpu/event=0xb7,umask=0x1,offcore_rsp=0x3fffc00100,name=offcore_response_pf_l3_rfo_l3_miss_any_response/ true
    
    which were <not supported> before.
    Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
    Reviewed-by: eranian@google.com
    Signed-off-by: default avatarPeter Zijlstra <peterz@infradead.org>
    Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
    Link: http://lkml.kernel.org/r/1406840722-25416-1-git-send-email-andi@firstfloor.orgSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
    36bbb2f2
perf_event_intel.c 73.8 KB