From: Kan Liang <[email protected]> Event select bit 7 'Use Occupancy' in PCU Box is not available for counter 0 on BDX
Add a constraint to fix it. Reported-by: Stephane Eranian <[email protected]> Signed-off-by: Kan Liang <[email protected]> Tested-by: Stephane Eranian <[email protected]> --- arch/x86/events/intel/uncore_snbep.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c index d5b4398..3991032 100644 --- a/arch/x86/events/intel/uncore_snbep.c +++ b/arch/x86/events/intel/uncore_snbep.c @@ -3034,11 +3034,19 @@ static struct intel_uncore_type *bdx_msr_uncores[] = { NULL, }; +/* bit 7 'Use Occupancy' is not available for counter 0 on BDX */ +static struct event_constraint bdx_uncore_pcu_constraints[] = { + EVENT_CONSTRAINT(0x80, 0xe, 0x80), + EVENT_CONSTRAINT_END +}; + void bdx_uncore_cpu_init(void) { if (bdx_uncore_cbox.num_boxes > boot_cpu_data.x86_max_cores) bdx_uncore_cbox.num_boxes = boot_cpu_data.x86_max_cores; uncore_msr_uncores = bdx_msr_uncores; + + hswep_uncore_pcu.constraints = bdx_uncore_pcu_constraints; } static struct intel_uncore_type bdx_uncore_ha = { -- 2.4.3
