dect
/
linux-2.6
Archived
13
0
Fork 0
Code Releases Activity

x86, perfcounters: print out the ->used bitmask 

Impact: extend debug printouts

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2008-12-23 12:28:12 +01:00
parent 95cdd2e785
commit 0dff86aa7b
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/kernel/cpu/perf_counter.c
View File

@ -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);