diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-12-23 12:28:12 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-23 12:45:20 +0100 |
| commit | 0dff86aa7b9ec65a6d07167b7afb050b5fc98ddc (patch) | |
| tree | 1062c2198370b9b50094f6ad406dedcec8a41b36 | |
| parent | 95cdd2e7851cce79ab839cb0b3cbe68d7911d0f1 (diff) | |
x86, perfcounters: print out the ->used bitmask
Impact: extend debug printouts
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | arch/x86/kernel/cpu/perf_counter.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c index 74090a393a7..f3359c2b391 100644 --- a/arch/x86/kernel/cpu/perf_counter.c +++ b/arch/x86/kernel/cpu/perf_counter.c @@ -255,6 +255,7 @@ static int pmc_generic_enable(struct perf_counter *counter) idx = find_first_zero_bit(cpuc->used, nr_counters_generic); if (idx == nr_counters_generic) return -EAGAIN; + set_bit(idx, cpuc->used); hwc->idx = idx; } @@ -274,6 +275,7 @@ static int pmc_generic_enable(struct perf_counter *counter) void perf_counter_print_debug(void) { u64 ctrl, status, overflow, pmc_ctrl, pmc_count, prev_left; + struct cpu_hw_counters *cpuc; int cpu, idx; if (!nr_counters_generic) @@ -282,6 +284,7 @@ void perf_counter_print_debug(void) local_irq_disable(); cpu = smp_processor_id(); + cpuc = &per_cpu(cpu_hw_counters, cpu); rdmsrl(MSR_CORE_PERF_GLOBAL_CTRL, ctrl); rdmsrl(MSR_CORE_PERF_GLOBAL_STATUS, status); @@ -291,6 +294,7 @@ void perf_counter_print_debug(void) printk(KERN_INFO "CPU#%d: ctrl: %016llx\n", cpu, ctrl); printk(KERN_INFO "CPU#%d: status: %016llx\n", cpu, status); printk(KERN_INFO "CPU#%d: overflow: %016llx\n", cpu, overflow); + printk(KERN_INFO "CPU#%d: used: %016llx\n", cpu, *(u64 *)cpuc->used); for (idx = 0; idx < nr_counters_generic; idx++) { rdmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + idx, pmc_ctrl); |