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Eliminate unnecessary NR_CPUS-sized arrays from 't' key handler
Replace them with per-CPU data. Signed-off-by: Jan Beulich <jbeulich@novell.com>
This commit is contained in:
Keir Fraser committed
1 parent
156433ce26
commit
9627efc9a8
1 file changed
+18
-14
+18
-14
@@ -307,8 +307,8 @@ static struct keyhandler dump_domains_keyhandler = {
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};
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static cpumask_t read_clocks_cpumask = CPU_MASK_NONE;
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static s_time_t read_clocks_time[NR_CPUS];
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static u64 read_cycles_time[NR_CPUS];
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static DEFINE_PER_CPU(s_time_t, read_clocks_time);
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static DEFINE_PER_CPU(u64, read_cycles_time);
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static void read_clocks_slave(void *unused)
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{
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@@ -316,8 +316,8 @@ static void read_clocks_slave(void *unused)
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local_irq_disable();
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while ( !cpu_isset(cpu, read_clocks_cpumask) )
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cpu_relax();
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read_clocks_time[cpu] = NOW();
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read_cycles_time[cpu] = get_cycles();
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per_cpu(read_clocks_time, cpu) = NOW();
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per_cpu(read_cycles_time, cpu) = get_cycles();
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cpu_clear(cpu, read_clocks_cpumask);
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local_irq_enable();
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}
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@@ -339,8 +339,8 @@ static void read_clocks(unsigned char key)
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local_irq_disable();
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read_clocks_cpumask = cpu_online_map;
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read_clocks_time[cpu] = NOW();
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read_cycles_time[cpu] = get_cycles();
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per_cpu(read_clocks_time, cpu) = NOW();
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per_cpu(read_cycles_time, cpu) = get_cycles();
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cpu_clear(cpu, read_clocks_cpumask);
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local_irq_enable();
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@@ -350,20 +350,24 @@ static void read_clocks(unsigned char key)
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min_stime_cpu = max_stime_cpu = min_cycles_cpu = max_cycles_cpu = cpu;
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for_each_online_cpu ( cpu )
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{
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if ( read_clocks_time[cpu] < read_clocks_time[min_stime_cpu] )
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if ( per_cpu(read_clocks_time, cpu) <
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per_cpu(read_clocks_time, min_stime_cpu) )
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min_stime_cpu = cpu;
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if ( read_clocks_time[cpu] > read_clocks_time[max_stime_cpu] )
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if ( per_cpu(read_clocks_time, cpu) >
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per_cpu(read_clocks_time, max_stime_cpu) )
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max_stime_cpu = cpu;
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if ( read_cycles_time[cpu] < read_cycles_time[min_cycles_cpu] )
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if ( per_cpu(read_cycles_time, cpu) <
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per_cpu(read_cycles_time, min_cycles_cpu) )
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min_cycles_cpu = cpu;
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if ( read_cycles_time[cpu] > read_cycles_time[max_cycles_cpu] )
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if ( per_cpu(read_cycles_time, cpu) >
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per_cpu(read_cycles_time, max_cycles_cpu) )
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max_cycles_cpu = cpu;
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}
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min_stime = read_clocks_time[min_stime_cpu];
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max_stime = read_clocks_time[max_stime_cpu];
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min_cycles = read_cycles_time[min_cycles_cpu];
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max_cycles = read_cycles_time[max_cycles_cpu];
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min_stime = per_cpu(read_clocks_time, min_stime_cpu);
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max_stime = per_cpu(read_clocks_time, max_stime_cpu);
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min_cycles = per_cpu(read_cycles_time, min_cycles_cpu);
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max_cycles = per_cpu(read_cycles_time, max_cycles_cpu);
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spin_unlock(&lock);
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