On Feb 6, 2013, at 8:17 AM, Gleb Natapov wrote:
> On Wed, Nov 21, 2012 at 06:34:07PM -0800, Sanjay Lal wrote:
>>
>> +int kvm_mips_dump_stats(struct kvm_vcpu *vcpu)
>> +{
>> + int i, j __unused;
>> +#ifdef CONFIG_KVM_MIPS_DEBUG_COP0_COUNTERS
>> + printk("\nKVM VCPU[%d] COP0 Access Profile:\n", vcpu->vcpu_id);
>> + for (i = 0; i < N_MIPS_COPROC_REGS; i++) {
>> + for (j = 0; j < N_MIPS_COPROC_SEL; j++) {
>> + if (vcpu->arch.cop0->stat[i][j])
>> + printk("%s[%d]: %lu\n", kvm_cop0_str[i], j,
>> + vcpu->arch.cop0->stat[i][j]);
>> + }
>> + }
>> +#endif
>> +
>> + return 0;
>> +}
> You need to use ftrace event for that. Much more flexible with perf
> integration and no need to recompile to enabled/disable.
>
> --
> Gleb.
Agreed, I'll start using trace for keeping track of COP0 accesses.
Regards
Sanjay
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