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-rw-r--r--arch/x86/kernel/acpi/cstate.c3
-rw-r--r--arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c10
-rw-r--r--arch/x86/kernel/cpu/cpufreq/powernow-k8.c15
-rw-r--r--arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c9
-rw-r--r--arch/x86/kernel/cpu/cpufreq/speedstep-ich.c3
-rw-r--r--arch/x86/kernel/cpu/intel_cacheinfo.c3
-rw-r--r--arch/x86/kernel/microcode.c13
-rw-r--r--arch/x86/kernel/reboot.c14
-rw-r--r--drivers/acpi/processor_throttling.c11
-rw-r--r--drivers/firmware/dcdbas.c3
-rw-r--r--include/linux/cpumask.h32
-rw-r--r--kernel/stop_machine.c3
-rw-r--r--kernel/trace/trace_sysprof.c4
-rw-r--r--net/sunrpc/svc.c3
14 files changed, 91 insertions, 35 deletions
diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c
index c2502eb9aa83..9220cf46aa10 100644
--- a/arch/x86/kernel/acpi/cstate.c
+++ b/arch/x86/kernel/acpi/cstate.c
@@ -73,6 +73,7 @@ int acpi_processor_ffh_cstate_probe(unsigned int cpu,
struct cpuinfo_x86 *c = &cpu_data(cpu);
cpumask_t saved_mask;
+ cpumask_of_cpu_ptr(new_mask, cpu);
int retval;
unsigned int eax, ebx, ecx, edx;
unsigned int edx_part;
@@ -91,7 +92,7 @@ int acpi_processor_ffh_cstate_probe(unsigned int cpu,
/* Make sure we are running on right CPU */
saved_mask = current->cpus_allowed;
- retval = set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
+ retval = set_cpus_allowed_ptr(current, new_mask);
if (retval)
return -1;
diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
index dd097b835839..ff2fff56f0a8 100644
--- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -200,10 +200,12 @@ static void drv_read(struct drv_cmd *cmd)
static void drv_write(struct drv_cmd *cmd)
{
cpumask_t saved_mask = current->cpus_allowed;
+ cpumask_of_cpu_ptr_declare(cpu_mask);
unsigned int i;
for_each_cpu_mask_nr(i, cmd->mask) {
- set_cpus_allowed_ptr(current, &cpumask_of_cpu(i));
+ cpumask_of_cpu_ptr_next(cpu_mask, i);
+ set_cpus_allowed_ptr(current, cpu_mask);
do_drv_write(cmd);
}
@@ -267,11 +269,12 @@ static unsigned int get_measured_perf(unsigned int cpu)
} aperf_cur, mperf_cur;
cpumask_t saved_mask;
+ cpumask_of_cpu_ptr(cpu_mask, cpu);
unsigned int perf_percent;
unsigned int retval;
saved_mask = current->cpus_allowed;
- set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
+ set_cpus_allowed_ptr(current, cpu_mask);
if (get_cpu() != cpu) {
/* We were not able to run on requested processor */
put_cpu();
@@ -337,6 +340,7 @@ static unsigned int get_measured_perf(unsigned int cpu)
static unsigned int get_cur_freq_on_cpu(unsigned int cpu)
{
+ cpumask_of_cpu_ptr(cpu_mask, cpu);
struct acpi_cpufreq_data *data = per_cpu(drv_data, cpu);
unsigned int freq;
unsigned int cached_freq;
@@ -349,7 +353,7 @@ static unsigned int get_cur_freq_on_cpu(unsigned int cpu)
}
cached_freq = data->freq_table[data->acpi_data->state].frequency;
- freq = extract_freq(get_cur_val(&cpumask_of_cpu(cpu)), data);
+ freq = extract_freq(get_cur_val(cpu_mask), data);
if (freq != cached_freq) {
/*
* The dreaded BIOS frequency change behind our back.
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index c45ca6d4dce1..53c7b6936973 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -479,11 +479,12 @@ static int core_voltage_post_transition(struct powernow_k8_data *data, u32 reqvi
static int check_supported_cpu(unsigned int cpu)
{
cpumask_t oldmask;
+ cpumask_of_cpu_ptr(cpu_mask, cpu);
u32 eax, ebx, ecx, edx;
unsigned int rc = 0;
oldmask = current->cpus_allowed;
- set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
+ set_cpus_allowed_ptr(current, cpu_mask);
if (smp_processor_id() != cpu) {
printk(KERN_ERR PFX "limiting to cpu %u failed\n", cpu);
@@ -1016,6 +1017,7 @@ static int transition_frequency_pstate(struct powernow_k8_data *data, unsigned i
static int powernowk8_target(struct cpufreq_policy *pol, unsigned targfreq, unsigned relation)
{
cpumask_t oldmask;
+ cpumask_of_cpu_ptr(cpu_mask, pol->cpu);
struct powernow_k8_data *data = per_cpu(powernow_data, pol->cpu);
u32 checkfid;
u32 checkvid;
@@ -1030,7 +1032,7 @@ static int powernowk8_target(struct cpufreq_policy *pol, unsigned targfreq, unsi
/* only run on specific CPU from here on */
oldmask = current->cpus_allowed;
- set_cpus_allowed_ptr(current, &cpumask_of_cpu(pol->cpu));
+ set_cpus_allowed_ptr(current, cpu_mask);
if (smp_processor_id() != pol->cpu) {
printk(KERN_ERR PFX "limiting to cpu %u failed\n", pol->cpu);
@@ -1105,6 +1107,7 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
{
struct powernow_k8_data *data;
cpumask_t oldmask;
+ cpumask_of_cpu_ptr_declare(newmask);
int rc;
if (!cpu_online(pol->cpu))
@@ -1156,7 +1159,8 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
/* only run on specific CPU from here on */
oldmask = current->cpus_allowed;
- set_cpus_allowed_ptr(current, &cpumask_of_cpu(pol->cpu));
+ cpumask_of_cpu_ptr_next(newmask, pol->cpu);
+ set_cpus_allowed_ptr(current, newmask);
if (smp_processor_id() != pol->cpu) {
printk(KERN_ERR PFX "limiting to cpu %u failed\n", pol->cpu);
@@ -1178,7 +1182,7 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
set_cpus_allowed_ptr(current, &oldmask);
if (cpu_family == CPU_HW_PSTATE)
- pol->cpus = cpumask_of_cpu(pol->cpu);
+ pol->cpus = *newmask;
else
pol->cpus = per_cpu(cpu_core_map, pol->cpu);
data->available_cores = &(pol->cpus);
@@ -1244,6 +1248,7 @@ static unsigned int powernowk8_get (unsigned int cpu)
{
struct powernow_k8_data *data;
cpumask_t oldmask = current->cpus_allowed;
+ cpumask_of_cpu_ptr(newmask, cpu);
unsigned int khz = 0;
unsigned int first;
@@ -1253,7 +1258,7 @@ static unsigned int powernowk8_get (unsigned int cpu)
if (!data)
return -EINVAL;
- set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
+ set_cpus_allowed_ptr(current, newmask);
if (smp_processor_id() != cpu) {
printk(KERN_ERR PFX
"limiting to CPU %d failed in powernowk8_get\n", cpu);
diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c b/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c
index 8b0dd6f2a1ac..fd561bb26c60 100644
--- a/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c
+++ b/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c
@@ -313,9 +313,10 @@ static unsigned int get_cur_freq(unsigned int cpu)
unsigned l, h;
unsigned clock_freq;
cpumask_t saved_mask;
+ cpumask_of_cpu_ptr(new_mask, cpu);
saved_mask = current->cpus_allowed;
- set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
+ set_cpus_allowed_ptr(current, new_mask);
if (smp_processor_id() != cpu)
return 0;
@@ -554,9 +555,11 @@ static int centrino_target (struct cpufreq_policy *policy,
*/
if (!cpus_empty(covered_cpus)) {
+ cpumask_of_cpu_ptr_declare(new_mask);
+
for_each_cpu_mask_nr(j, covered_cpus) {
- set_cpus_allowed_ptr(current,
- &cpumask_of_cpu(j));
+ cpumask_of_cpu_ptr_next(new_mask, j);
+ set_cpus_allowed_ptr(current, new_mask);
wrmsr(MSR_IA32_PERF_CTL, oldmsr, h);
}
}
diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c b/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c
index 191f7263c61d..2f3728dc24f6 100644
--- a/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c
+++ b/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c
@@ -244,7 +244,8 @@ static unsigned int _speedstep_get(const cpumask_t *cpus)
static unsigned int speedstep_get(unsigned int cpu)
{
- return _speedstep_get(&cpumask_of_cpu(cpu));
+ cpumask_of_cpu_ptr(newmask, cpu);
+ return _speedstep_get(newmask);
}
/**
diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c
index a7b0f8f1736b..e4b8d189d7ed 100644
--- a/arch/x86/kernel/cpu/intel_cacheinfo.c
+++ b/arch/x86/kernel/cpu/intel_cacheinfo.c
@@ -516,6 +516,7 @@ static int __cpuinit detect_cache_attributes(unsigned int cpu)
unsigned long j;
int retval;
cpumask_t oldmask;
+ cpumask_of_cpu_ptr(newmask, cpu);
if (num_cache_leaves == 0)
return -ENOENT;
@@ -526,7 +527,7 @@ static int __cpuinit detect_cache_attributes(unsigned int cpu)
return -ENOMEM;
oldmask = current->cpus_allowed;
- retval = set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
+ retval = set_cpus_allowed_ptr(current, newmask);
if (retval)
goto out;
diff --git a/arch/x86/kernel/microcode.c b/arch/x86/kernel/microcode.c
index 56b933119a04..58520169e35d 100644
--- a/arch/x86/kernel/microcode.c
+++ b/arch/x86/kernel/microcode.c
@@ -388,6 +388,7 @@ static int do_microcode_update (void)
void *new_mc = NULL;
int cpu;
cpumask_t old;
+ cpumask_of_cpu_ptr_declare(newmask);
old = current->cpus_allowed;
@@ -404,7 +405,8 @@ static int do_microcode_update (void)
if (!uci->valid)
continue;
- set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
+ cpumask_of_cpu_ptr_next(newmask, cpu);
+ set_cpus_allowed_ptr(current, newmask);
error = get_maching_microcode(new_mc, cpu);
if (error < 0)
goto out;
@@ -574,6 +576,7 @@ static int apply_microcode_check_cpu(int cpu)
struct cpuinfo_x86 *c = &cpu_data(cpu);
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
cpumask_t old;
+ cpumask_of_cpu_ptr(newmask, cpu);
unsigned int val[2];
int err = 0;
@@ -582,7 +585,7 @@ static int apply_microcode_check_cpu(int cpu)
return 0;
old = current->cpus_allowed;
- set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
+ set_cpus_allowed_ptr(current, newmask);
/* Check if the microcode we have in memory matches the CPU */
if (c->x86_vendor != X86_VENDOR_INTEL || c->x86 < 6 ||
@@ -620,11 +623,12 @@ static int apply_microcode_check_cpu(int cpu)
static void microcode_init_cpu(int cpu, int resume)
{
cpumask_t old;
+ cpumask_of_cpu_ptr(newmask, cpu);
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
old = current->cpus_allowed;
- set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
+ set_cpus_allowed_ptr(current, newmask);
mutex_lock(&microcode_mutex);
collect_cpu_info(cpu);
if (uci->valid && system_state == SYSTEM_RUNNING && !resume)
@@ -656,11 +660,12 @@ static ssize_t reload_store(struct sys_device *dev, const char *buf, size_t sz)
return -EINVAL;
if (val == 1) {
cpumask_t old;
+ cpumask_of_cpu_ptr(newmask, cpu);
old = current->cpus_allowed;
get_online_cpus();
- set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
+ set_cpus_allowed_ptr(current, newmask);
mutex_lock(&microcode_mutex);
if (uci->valid)
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index f8a62160e151..214bbdfc851e 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -403,24 +403,28 @@ void native_machine_shutdown(void)
{
/* Stop the cpus and apics */
#ifdef CONFIG_SMP
- int reboot_cpu_id;
/* The boot cpu is always logical cpu 0 */
- reboot_cpu_id = 0;
+ int reboot_cpu_id = 0;
+ cpumask_of_cpu_ptr(newmask, reboot_cpu_id);
#ifdef CONFIG_X86_32
/* See if there has been given a command line override */
if ((reboot_cpu != -1) && (reboot_cpu < NR_CPUS) &&
- cpu_online(reboot_cpu))
+ cpu_online(reboot_cpu)) {
reboot_cpu_id = reboot_cpu;
+ cpumask_of_cpu_ptr_next(newmask, reboot_cpu_id);
+ }
#endif
/* Make certain the cpu I'm about to reboot on is online */
- if (!cpu_online(reboot_cpu_id))
+ if (!cpu_online(reboot_cpu_id)) {
reboot_cpu_id = smp_processor_id();
+ cpumask_of_cpu_ptr_next(newmask, reboot_cpu_id);
+ }
/* Make certain I only run on the appropriate processor */
- set_cpus_allowed_ptr(current, &cpumask_of_cpu(reboot_cpu_id));
+ set_cpus_allowed_ptr(current, newmask);
/* O.K Now that I'm on the appropriate processor,
* stop all of the others.
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index a56fc6c4394b..a2c3f9cfa549 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -827,6 +827,7 @@ static int acpi_processor_get_throttling_ptc(struct acpi_processor *pr)
static int acpi_processor_get_throttling(struct acpi_processor *pr)
{
cpumask_t saved_mask;
+ cpumask_of_cpu_ptr_declare(new_mask);
int ret;
if (!pr)
@@ -838,7 +839,8 @@ static int acpi_processor_get_throttling(struct acpi_processor *pr)
* Migrate task to the cpu pointed by pr.
*/
saved_mask = current->cpus_allowed;
- set_cpus_allowed_ptr(current, &cpumask_of_cpu(pr->id));
+ cpumask_of_cpu_ptr_next(new_mask, pr->id);
+ set_cpus_allowed_ptr(current, new_mask);
ret = pr->throttling.acpi_processor_get_throttling(pr);
/* restore the previous state */
set_cpus_allowed_ptr(current, &saved_mask);
@@ -987,6 +989,7 @@ static int acpi_processor_set_throttling_ptc(struct acpi_processor *pr,
int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
{
cpumask_t saved_mask;
+ cpumask_of_cpu_ptr_declare(new_mask);
int ret = 0;
unsigned int i;
struct acpi_processor *match_pr;
@@ -1025,7 +1028,8 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
* it can be called only for the cpu pointed by pr.
*/
if (p_throttling->shared_type == DOMAIN_COORD_TYPE_SW_ANY) {
- set_cpus_allowed_ptr(current, &cpumask_of_cpu(pr->id));
+ cpumask_of_cpu_ptr_next(new_mask, pr->id);
+ set_cpus_allowed_ptr(current, new_mask);
ret = p_throttling->acpi_processor_set_throttling(pr,
t_state.target_state);
} else {
@@ -1056,7 +1060,8 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
continue;
}
t_state.cpu = i;
- set_cpus_allowed_ptr(current, &cpumask_of_cpu(i));
+ cpumask_of_cpu_ptr_next(new_mask, i);
+ set_cpus_allowed_ptr(current, new_mask);
ret = match_pr->throttling.
acpi_processor_set_throttling(
match_pr, t_state.target_state);
diff --git a/drivers/firmware/dcdbas.c b/drivers/firmware/dcdbas.c
index 25918f7dfd0f..0b624e927a6f 100644
--- a/drivers/firmware/dcdbas.c
+++ b/drivers/firmware/dcdbas.c
@@ -254,6 +254,7 @@ static ssize_t host_control_on_shutdown_store(struct device *dev,
static int smi_request(struct smi_cmd *smi_cmd)
{
cpumask_t old_mask;
+ cpumask_of_cpu_ptr(new_mask, 0);
int ret = 0;
if (smi_cmd->magic != SMI_CMD_MAGIC) {
@@ -264,7 +265,7 @@ static int smi_request(struct smi_cmd *smi_cmd)
/* SMI requires CPU 0 */
old_mask = current->cpus_allowed;
- set_cpus_allowed_ptr(current, &cpumask_of_cpu(0));
+ set_cpus_allowed_ptr(current, new_mask);
if (smp_processor_id() != 0) {
dev_dbg(&dcdbas_pdev->dev, "%s: failed to get CPU 0\n",
__func__);
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 80226e776143..2dbd9a287e77 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -62,6 +62,15 @@
* int next_cpu_nr(cpu, mask) Next cpu past 'cpu', or nr_cpu_ids
*
* cpumask_t cpumask_of_cpu(cpu) Return cpumask with bit 'cpu' set
+ *ifdef CONFIG_HAS_CPUMASK_OF_CPU
+ * cpumask_of_cpu_ptr_declare(v) Declares cpumask_t *v
+ * cpumask_of_cpu_ptr_next(v, cpu) Sets v = &cpumask_of_cpu_map[cpu]
+ * cpumask_of_cpu_ptr(v, cpu) Combines above two operations
+ *else
+ * cpumask_of_cpu_ptr_declare(v) Declares cpumask_t _v and *v = &_v
+ * cpumask_of_cpu_ptr_next(v, cpu) Sets _v = cpumask_of_cpu(cpu)
+ * cpumask_of_cpu_ptr(v, cpu) Combines above two operations
+ *endif
* CPU_MASK_ALL Initializer - all bits set
* CPU_MASK_NONE Initializer - no bits set
* unsigned long *cpus_addr(mask) Array of unsigned long's in mask
@@ -236,11 +245,16 @@ static inline void __cpus_shift_left(cpumask_t *dstp,
#ifdef CONFIG_HAVE_CPUMASK_OF_CPU_MAP
extern cpumask_t *cpumask_of_cpu_map;
-#define cpumask_of_cpu(cpu) (cpumask_of_cpu_map[cpu])
-
+#define cpumask_of_cpu(cpu) (cpumask_of_cpu_map[cpu])
+#define cpumask_of_cpu_ptr(v, cpu) \
+ const cpumask_t *v = &cpumask_of_cpu(cpu)
+#define cpumask_of_cpu_ptr_declare(v) \
+ const cpumask_t *v
+#define cpumask_of_cpu_ptr_next(v, cpu) \
+ v = &cpumask_of_cpu(cpu)
#else
#define cpumask_of_cpu(cpu) \
-(*({ \
+({ \
typeof(_unused_cpumask_arg_) m; \
if (sizeof(m) == sizeof(unsigned long)) { \
m.bits[0] = 1UL<<(cpu); \
@@ -248,8 +262,16 @@ extern cpumask_t *cpumask_of_cpu_map;
cpus_clear(m); \
cpu_set((cpu), m); \
} \
- &m; \
-}))
+ m; \
+})
+#define cpumask_of_cpu_ptr(v, cpu) \
+ cpumask_t _##v = cpumask_of_cpu(cpu); \
+ const cpumask_t *v = &_##v
+#define cpumask_of_cpu_ptr_declare(v) \
+ cpumask_t _##v; \
+ const cpumask_t *v = &_##v
+#define cpumask_of_cpu_ptr_next(v, cpu) \
+ _##v = cpumask_of_cpu(cpu)
#endif
#define CPU_MASK_LAST_WORD BITMAP_LAST_WORD_MASK(NR_CPUS)
diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c
index ba9b2054ecbd..738b411ff2d3 100644
--- a/kernel/stop_machine.c
+++ b/kernel/stop_machine.c
@@ -33,8 +33,9 @@ static int stopmachine(void *cpu)
{
int irqs_disabled = 0;
int prepared = 0;
+ cpumask_of_cpu_ptr(cpumask, (int)(long)cpu);
- set_cpus_allowed_ptr(current, &cpumask_of_cpu((int)(long)cpu));
+ set_cpus_allowed_ptr(current, cpumask);
/* Ack: we are alive */
smp_mb(); /* Theoretically the ack = 0 might not be on this CPU yet. */
diff --git a/kernel/trace/trace_sysprof.c b/kernel/trace/trace_sysprof.c
index 2301e1e7c606..63528086337c 100644
--- a/kernel/trace/trace_sysprof.c
+++ b/kernel/trace/trace_sysprof.c
@@ -213,7 +213,9 @@ static void start_stack_timers(void)
int cpu;
for_each_online_cpu(cpu) {
- set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
+ cpumask_of_cpu_ptr(new_mask, cpu);
+
+ set_cpus_allowed_ptr(current, new_mask);
start_stack_timer(cpu);
}
set_cpus_allowed_ptr(current, &saved_mask);
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index d43cf8ddff67..083d12688134 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -314,9 +314,10 @@ svc_pool_map_set_cpumask(unsigned int pidx, cpumask_t *oldmask)
case SVC_POOL_PERCPU:
{
unsigned int cpu = m->pool_to[pidx];
+ cpumask_of_cpu_ptr(cpumask, cpu);
*oldmask = current->cpus_allowed;
- set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
+ set_cpus_allowed_ptr(current, cpumask);
return 1;
}
case SVC_POOL_PERNODE:
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