diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 231698feaddcdf669e5969ec5efd0a3e74bf2130..82365dde00a8eee09e43b295496729b102ddeac7 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1913,8 +1913,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
Valid arguments: on, off
Default: on
- nohz_extended= [KNL,BOOT]
- In kernels built with CONFIG_NO_HZ_EXTENDED=y, set
+ nohz_full= [KNL,BOOT]
+ In kernels built with CONFIG_NO_HZ_FULL=y, set
the specified list of CPUs whose tick will be stopped
whenever possible. You need to keep at least one online
CPU outside the range to maintain the timekeeping.
diff --git a/include/linux/tick.h b/include/linux/tick.h
index 5e403339ee14ab2f6c571da3335dc09d0644abd2..b4e3b0c9639e7520aaf8e9a9b4e6e39f9722bf33 100644
--- a/include/linux/tick.h
+++ b/include/linux/tick.h
@@ -157,10 +157,10 @@ static inline u64 get_cpu_idle_time_us(int cpu, u64 *unused) { return -1; }
static inline u64 get_cpu_iowait_time_us(int cpu, u64 *unused) { return -1; }
# endif /* !CONFIG_NO_HZ_COMMON */
-#ifdef CONFIG_NO_HZ_EXTENDED
-extern int tick_nohz_extended_cpu(int cpu);
+#ifdef CONFIG_NO_HZ_FULL
+extern int tick_nohz_full_cpu(int cpu);
#else
-static inline int tick_nohz_extended_cpu(int cpu) { return 0; }
+static inline int tick_nohz_full_cpu(int cpu) { return 0; }
#endif
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 9bb397da63d628108d164192b142e96254456812..0f0a5b3fd62c8c6ddeffc2d0ee1ec840f596eafc 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -617,9 +617,9 @@ static void wake_up_idle_cpu(int cpu)
smp_send_reschedule(cpu);
}
-static bool wake_up_extended_nohz_cpu(int cpu)
+static bool wake_up_full_nohz_cpu(int cpu)
{
- if (tick_nohz_extended_cpu(cpu)) {
+ if (tick_nohz_full_cpu(cpu)) {
if (cpu != smp_processor_id() ||
tick_nohz_tick_stopped())
smp_send_reschedule(cpu);
@@ -631,7 +631,7 @@ static bool wake_up_extended_nohz_cpu(int cpu)
void wake_up_nohz_cpu(int cpu)
{
- if (!wake_up_extended_nohz_cpu(cpu))
+ if (!wake_up_full_nohz_cpu(cpu))
wake_up_idle_cpu(cpu);
}
diff --git a/kernel/time/Kconfig b/kernel/time/Kconfig
index cbe64be17d1f1dfcac5276f4b576af077d6ae948..4a17b5069466899a14384d8a102e4c7a676cca64 100644
--- a/kernel/time/Kconfig
+++ b/kernel/time/Kconfig
@@ -96,7 +96,7 @@ config NO_HZ_IDLE
Most of the time you want to say Y here.
-config NO_HZ_EXTENDED
+config NO_HZ_FULL
bool "Full dynticks system (tickless single task)"
# NO_HZ_COMMON dependency
depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS
@@ -115,7 +115,7 @@ config NO_HZ_EXTENDED
task on the CPU. Chances for running tickless are maximized when
the task mostly runs in userspace and has few kernel activity.
- You need to fill up the nohz_extended boot parameter with the
+ You need to fill up the nohz_full boot parameter with the
desired range of dynticks CPUs.
This is implemented at the expense of some overhead in user <-> kernel
diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c
index 8a6875cc1879195a8fe828e62e3f57f4e51769fd..a3a3123f6272b74486ea14503b914ac4e6f17160 100644
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -573,7 +573,7 @@ void tick_broadcast_setup_oneshot(struct clock_event_device *bc)
bc->event_handler = tick_handle_oneshot_broadcast;
/* Take the do_timer update */
- if (!tick_nohz_extended_cpu(cpu))
+ if (!tick_nohz_full_cpu(cpu))
tick_do_timer_cpu = cpu;
/*
diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c
index b7dc0cbdb59bf08b12ac063c62a64fe05e971e82..83f2bd967161460776207c3f4d354c1c0a06fe41 100644
--- a/kernel/time/tick-common.c
+++ b/kernel/time/tick-common.c
@@ -163,7 +163,7 @@ static void tick_setup_device(struct tick_device *td,
* this cpu:
*/
if (tick_do_timer_cpu == TICK_DO_TIMER_BOOT) {
- if (!tick_nohz_extended_cpu(cpu))
+ if (!tick_nohz_full_cpu(cpu))
tick_do_timer_cpu = cpu;
else
tick_do_timer_cpu = TICK_DO_TIMER_NONE;
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index e057d338daa494a69ca7244e1696a430dffc5161..369b5769fc9722e5e751c45cd3941dadf6a7cb91 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -113,7 +113,7 @@ static void tick_sched_do_timer(ktime_t now)
* jiffies_lock.
*/
if (unlikely(tick_do_timer_cpu == TICK_DO_TIMER_NONE)
- && !tick_nohz_extended_cpu(cpu))
+ && !tick_nohz_full_cpu(cpu))
tick_do_timer_cpu = cpu;
#endif
@@ -143,29 +143,29 @@ static void tick_sched_handle(struct tick_sched *ts, struct pt_regs *regs)
profile_tick(CPU_PROFILING);
}
-#ifdef CONFIG_NO_HZ_EXTENDED
-static cpumask_var_t nohz_extended_mask;
-bool have_nohz_extended_mask;
+#ifdef CONFIG_NO_HZ_FULL
+static cpumask_var_t nohz_full_mask;
+bool have_nohz_full_mask;
-int tick_nohz_extended_cpu(int cpu)
+int tick_nohz_full_cpu(int cpu)
{
- if (!have_nohz_extended_mask)
+ if (!have_nohz_full_mask)
return 0;
- return cpumask_test_cpu(cpu, nohz_extended_mask);
+ return cpumask_test_cpu(cpu, nohz_full_mask);
}
/* Parse the boot-time nohz CPU list from the kernel parameters. */
-static int __init tick_nohz_extended_setup(char *str)
+static int __init tick_nohz_full_setup(char *str)
{
- alloc_bootmem_cpumask_var(&nohz_extended_mask);
- if (cpulist_parse(str, nohz_extended_mask) < 0)
- pr_warning("NOHZ: Incorrect nohz_extended cpumask\n");
+ alloc_bootmem_cpumask_var(&nohz_full_mask);
+ if (cpulist_parse(str, nohz_full_mask) < 0)
+ pr_warning("NOHZ: Incorrect nohz_full cpumask\n");
else
- have_nohz_extended_mask = true;
+ have_nohz_full_mask = true;
return 1;
}
-__setup("nohz_extended=", tick_nohz_extended_setup);
+__setup("nohz_full=", tick_nohz_full_setup);
static int __cpuinit tick_nohz_cpu_down_callback(struct notifier_block *nfb,
unsigned long action,
@@ -179,7 +179,7 @@ static int __cpuinit tick_nohz_cpu_down_callback(struct notifier_block *nfb,
* If we handle the timekeeping duty for full dynticks CPUs,
* we can't safely shutdown that CPU.
*/
- if (have_nohz_extended_mask && tick_do_timer_cpu == cpu)
+ if (have_nohz_full_mask && tick_do_timer_cpu == cpu)
return -EINVAL;
break;
}
@@ -191,20 +191,20 @@ static int __cpuinit tick_nohz_cpu_down_callback(struct notifier_block *nfb,
* separations: 0,2,4,6,...
* This is NR_CPUS + sizeof('\0')
*/
-static char __initdata nohz_ext_buf[NR_CPUS + 1];
+static char __initdata nohz_full_buf[NR_CPUS + 1];
-static int __init init_tick_nohz_extended(void)
+static int __init init_tick_nohz_full(void)
{
cpumask_var_t online_nohz;
int cpu;
- if (!have_nohz_extended_mask)
+ if (!have_nohz_full_mask)
return 0;
cpu_notifier(tick_nohz_cpu_down_callback, 0);
if (!zalloc_cpumask_var(&online_nohz, GFP_KERNEL)) {
- pr_warning("NO_HZ: Not enough memory to check extended nohz mask\n");
+ pr_warning("NO_HZ: Not enough memory to check full nohz mask\n");
return -ENOMEM;
}
@@ -215,31 +215,31 @@ static int __init init_tick_nohz_extended(void)
get_online_cpus();
/* Ensure we keep a CPU outside the dynticks range for timekeeping */
- cpumask_and(online_nohz, cpu_online_mask, nohz_extended_mask);
+ cpumask_and(online_nohz, cpu_online_mask, nohz_full_mask);
if (cpumask_equal(online_nohz, cpu_online_mask)) {
pr_warning("NO_HZ: Must keep at least one online CPU "
- "out of nohz_extended range\n");
+ "out of nohz_full range\n");
/*
* We know the current CPU doesn't have its tick stopped.
* Let's use it for the timekeeping duty.
*/
preempt_disable();
cpu = smp_processor_id();
- pr_warning("NO_HZ: Clearing %d from nohz_extended range\n", cpu);
- cpumask_clear_cpu(cpu, nohz_extended_mask);
+ pr_warning("NO_HZ: Clearing %d from nohz_full range\n", cpu);
+ cpumask_clear_cpu(cpu, nohz_full_mask);
preempt_enable();
}
put_online_cpus();
free_cpumask_var(online_nohz);
- cpulist_scnprintf(nohz_ext_buf, sizeof(nohz_ext_buf), nohz_extended_mask);
- pr_info("NO_HZ: Full dynticks CPUs: %s.\n", nohz_ext_buf);
+ cpulist_scnprintf(nohz_full_buf, sizeof(nohz_full_buf), nohz_full_mask);
+ pr_info("NO_HZ: Full dynticks CPUs: %s.\n", nohz_full_buf);
return 0;
}
-core_initcall(init_tick_nohz_extended);
+core_initcall(init_tick_nohz_full);
#else
-#define have_nohz_extended_mask (0)
+#define have_nohz_full_mask (0)
#endif
/*
@@ -589,7 +589,7 @@ static bool can_stop_idle_tick(int cpu, struct tick_sched *ts)
return false;
}
- if (have_nohz_extended_mask) {
+ if (have_nohz_full_mask) {
/*
* Keep the tick alive to guarantee timekeeping progression
* if there are full dynticks CPUs around