• James Hogan's avatar
    MIPS: Add perf counter feature · 30228c40
    James Hogan authored
    Add CPU feature for standard MIPS r2 performance counters, as determined
    by the Config1.PC bit. Both perf_events and oprofile probe this bit, so
    lets combine the probing and change both to use cpu_has_perf.
    
    This will also be used for VZ support in KVM to know whether performance
    counters exist which can be exposed to guests.
    
    [ralf@linux-mips.org: resolve conflict.]
    Signed-off-by: default avatarJames Hogan <james.hogan@imgtec.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
    Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
    Cc: Robert Richter <rric@kernel.org>
    Cc: linux-mips@linux-mips.org
    Cc: oprofile-list@lists.sf.net
    Patchwork: https://patchwork.linux-mips.org/patch/13226/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
    30228c40
perf_event_mipsxx.c 45.7 KB