• Peter Zijlstra's avatar
    perf, arch: Add generic NODE cache events · 89d6c0b5
    Peter Zijlstra authored
    Add a NODE level to the generic cache events which is used to measure
    local vs remote memory accesses. Like all other cache events, an
    ACCESS is HIT+MISS, if there is no way to distinguish between reads
    and writes do reads only etc..
    The below needs filling out for !x86 (which I filled out with
    unsupported events).
    I'm fairly sure ARM can leave it like that since it doesn't strike me as
    an architecture that even has NUMA support. SH might have something since
    it does appear to have some NUMA bits.
    Sparc64, PowerPC and MIPS certainly want a good look there since they
    clearly are NUMA capable.
    Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
    Cc: David Miller <davem@davemloft.net>
    Cc: Anton Blanchard <anton@samba.org>
    Cc: David Daney <ddaney@caviumnetworks.com>
    Cc: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
    Cc: Paul Mundt <lethal@linux-sh.org>
    Cc: Will Deacon <will.deacon@arm.com>
    Cc: Robert Richter <robert.richter@amd.com>
    Cc: Stephane Eranian <eranian@google.com>
    Link: http://lkml.kernel.org/r/1303508226.4865.8.camel@laptop
    Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
perf_event_xscale.c 20 KB