x86, perfcounters: print out the ->used bitmask
Impact: extend debug printouts Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -255,6 +255,7 @@ static int pmc_generic_enable(struct perf_counter *counter)
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idx = find_first_zero_bit(cpuc->used, nr_counters_generic);
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if (idx == nr_counters_generic)
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return -EAGAIN;
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set_bit(idx, cpuc->used);
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hwc->idx = idx;
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}
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@ -274,6 +275,7 @@ static int pmc_generic_enable(struct perf_counter *counter)
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void perf_counter_print_debug(void)
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{
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u64 ctrl, status, overflow, pmc_ctrl, pmc_count, prev_left;
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struct cpu_hw_counters *cpuc;
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int cpu, idx;
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if (!nr_counters_generic)
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@ -282,6 +284,7 @@ void perf_counter_print_debug(void)
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local_irq_disable();
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cpu = smp_processor_id();
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cpuc = &per_cpu(cpu_hw_counters, cpu);
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rdmsrl(MSR_CORE_PERF_GLOBAL_CTRL, ctrl);
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rdmsrl(MSR_CORE_PERF_GLOBAL_STATUS, status);
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@ -291,6 +294,7 @@ void perf_counter_print_debug(void)
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printk(KERN_INFO "CPU#%d: ctrl: %016llx\n", cpu, ctrl);
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printk(KERN_INFO "CPU#%d: status: %016llx\n", cpu, status);
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printk(KERN_INFO "CPU#%d: overflow: %016llx\n", cpu, overflow);
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printk(KERN_INFO "CPU#%d: used: %016llx\n", cpu, *(u64 *)cpuc->used);
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for (idx = 0; idx < nr_counters_generic; idx++) {
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rdmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + idx, pmc_ctrl);
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