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IPI: use logical CPU ids in ihk_mc_interrupt_cpu()

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Also make remote TLB invalidation arch independent,
removes POSTK_DEBUG_ARCH_DEP_8.

Change-Id: I2b0fbcfa2bfe5da07607863e3e772d8e892e8525
This commit is contained in:
Balazs Gerofi
2019-03-19 16:33:28 +09:00
committed by Dominique Martinet
parent 2cee82673b
commit de042b2cb2
9 changed files with 29 additions and 191 deletions
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7
arch/arm64/kernel/cpu.c
View File

@@ -32,6 +32,7 @@
#include <ihk/debug.h>
#include <hwcap.h>
#include <virt.h>
#include <init.h>
//#define DEBUG_PRINT_CPU
@@ -1346,11 +1347,15 @@ int ihk_mc_arch_get_special_register(enum ihk_asr_type type,
}
/*@
@ requires \valid_apicid(cpu); // valid APIC ID or not
@ requires \valid_cpuid(cpu); // valid CPU logical ID
@ ensures \result == 0
@*/
int ihk_mc_interrupt_cpu(int cpu, int vector)
{
if (cpu < 0 || cpu >= num_processors) {
kprintf("%s: invalid CPU id: %d\n", __func__, cpu);
return -1;
}
dkprintf("[%d] ihk_mc_interrupt_cpu: %d\n", ihk_mc_get_processor_id(), cpu);
(*arm64_issue_ipi)(cpu, vector);
return 0;

38
arch/arm64/kernel/memory.c
View File

@@ -3715,44 +3715,6 @@ translation_table_t* get_translation_table_as_paddr(const struct page_table *pt)
return pt->tt_pa;
}
#ifdef POSTK_DEBUG_ARCH_DEP_8
void remote_flush_tlb_cpumask(struct process_vm *vm,
unsigned long addr, int cpu_id)
{
unsigned long cpu;
cpu_set_t _cpu_set;
int flush_ind;
if (addr) {
flush_ind = (addr >> PAGE_SHIFT) % IHK_TLB_FLUSH_IRQ_VECTOR_SIZE;
}
/* Zero address denotes full TLB flush */
else {
/* Random.. */
flush_ind = (rdtsc()) % IHK_TLB_FLUSH_IRQ_VECTOR_SIZE;
}
/* Take a copy of the cpu set so that we don't hold the lock
* all the way while interrupting other cores */
ihk_mc_spinlock_lock_noirq(&vm->address_space->cpu_set_lock);
memcpy(&_cpu_set, &vm->address_space->cpu_set, sizeof(cpu_set_t));
ihk_mc_spinlock_unlock_noirq(&vm->address_space->cpu_set_lock);
/* Loop through CPUs in this address space and interrupt them for
* TLB flush on the specified address */
for_each_set_bit(cpu, (const unsigned long*)&_cpu_set.__bits, CPU_SETSIZE) {
if (ihk_mc_get_processor_id() == cpu)
continue;
dkprintf("remote_flush_tlb_cpumask: flush_ind: %d, addr: 0x%lX, interrupting cpu: %d\n",
flush_ind, addr, cpu);
ihk_mc_interrupt_cpu(cpu,
ihk_mc_get_vector(flush_ind + IHK_TLB_FLUSH_IRQ_VECTOR_START));
}
}
#endif /* POSTK_DEBUG_ARCH_DEP_8 */
void arch_adjust_allocate_page_size(struct page_table *pt,
uintptr_t fault_addr,
pte_t *ptep,

12
arch/x86_64/kernel/cpu.c
View File

@@ -1601,14 +1601,18 @@ int ihk_mc_arch_get_special_register(enum ihk_asr_type type,
}
/*@
@ requires \valid_apicid(cpu); // valid APIC ID or not
@ requires \valid_cpuid(cpu); // valid CPU logical ID
@ ensures \result == 0
@*/
int ihk_mc_interrupt_cpu(int cpu, int vector)
{
if (cpu < 0 || cpu >= num_processors) {
kprintf("%s: invalid CPU id: %d\n", __func__, cpu);
return -1;
}
dkprintf("[%d] ihk_mc_interrupt_cpu: %d\n", ihk_mc_get_processor_id(), cpu);
x86_issue_ipi(cpu, vector);
x86_issue_ipi(get_x86_cpu_local_variable(cpu)->apic_id, vector);
return 0;
}
@@ -2095,9 +2099,7 @@ int smp_call_func(cpu_set_t *__cpu_set, smp_func_t __func, void *__arg)
ihk_mc_spinlock_unlock(&get_cpu_local_var(cpu)->smp_func_req_lock,
irq_flags);
ihk_mc_interrupt_cpu(
get_x86_cpu_local_variable(cpu)->apic_id,
LOCAL_SMP_FUNC_CALL_VECTOR);
ihk_mc_interrupt_cpu(cpu, LOCAL_SMP_FUNC_CALL_VECTOR);
++cpu_index;
}

103
arch/x86_64/kernel/memory.c
View File

@@ -1354,109 +1354,6 @@ struct clear_range_args {
int max_nr_addr;
};
#ifdef POSTK_DEBUG_ARCH_DEP_8
void remote_flush_tlb_cpumask(struct process_vm *vm,
unsigned long addr, int cpu_id)
{
unsigned long __addr = addr;
return remote_flush_tlb_array_cpumask(vm, &__addr, 1, cpu_id);
}
void remote_flush_tlb_array_cpumask(struct process_vm *vm,
unsigned long *addr,
int nr_addr,
int cpu_id)
{
unsigned long cpu;
int flush_ind;
struct tlb_flush_entry *flush_entry;
cpu_set_t _cpu_set;
if (addr[0]) {
flush_ind = (addr[0] >> PAGE_SHIFT) % IHK_TLB_FLUSH_IRQ_VECTOR_SIZE;
}
/* Zero address denotes full TLB flush */
else {
/* Random.. */
flush_ind = (rdtsc()) % IHK_TLB_FLUSH_IRQ_VECTOR_SIZE;
}
flush_entry = &tlb_flush_vector[flush_ind];
/* Take a copy of the cpu set so that we don't hold the lock
* all the way while interrupting other cores */
ihk_mc_spinlock_lock_noirq(&vm->address_space->cpu_set_lock);
memcpy(&_cpu_set, &vm->address_space->cpu_set, sizeof(cpu_set_t));
ihk_mc_spinlock_unlock_noirq(&vm->address_space->cpu_set_lock);
dkprintf("trying to aquire flush_entry->lock flush_ind: %d\n", flush_ind);
ihk_mc_spinlock_lock_noirq(&flush_entry->lock);
flush_entry->vm = vm;
flush_entry->addr = addr;
flush_entry->nr_addr = nr_addr;
ihk_atomic_set(&flush_entry->pending, 0);
dkprintf("lock aquired, iterating cpu mask.. flush_ind: %d\n", flush_ind);
/* Loop through CPUs in this address space and interrupt them for
* TLB flush on the specified address */
for_each_set_bit(cpu, (const unsigned long*)&_cpu_set.__bits, CPU_SETSIZE) {
if (ihk_mc_get_processor_id() == cpu)
continue;
ihk_atomic_inc(&flush_entry->pending);
dkprintf("remote_flush_tlb_cpumask: flush_ind: %d, addr: 0x%lX, interrupting cpu: %d\n",
flush_ind, addr, cpu);
#ifdef POSTK_DEBUG_ARCH_DEP_8 /* arch depend hide */
/* TODO(pka_idke) Interim support */
ihk_mc_interrupt_cpu(cpu,
ihk_mc_get_vector(flush_ind + IHK_TLB_FLUSH_IRQ_VECTOR_START));
#else /* POSTK_DEBUG_ARCH_DEP_8 */
ihk_mc_interrupt_cpu(get_x86_cpu_local_variable(cpu)->apic_id,
flush_ind + IHK_TLB_FLUSH_IRQ_VECTOR_START);
#endif /* POSTK_DEBUG_ARCH_DEP_8 */
}
#ifdef DEBUG_IC_TLB
{
unsigned long tsc;
tsc = rdtsc() + 12884901888; /* 1.2GHz =>10 sec */
#endif
if (flush_entry->addr[0]) {
int i;
for (i = 0; i < flush_entry->nr_addr; ++i) {
flush_tlb_single(flush_entry->addr[i] & PAGE_MASK);
}
}
/* Zero address denotes full TLB flush */
else {
flush_tlb();
}
/* Wait for all cores */
while (ihk_atomic_read(&flush_entry->pending) != 0) {
cpu_pause();
#ifdef DEBUG_IC_TLB
if (rdtsc() > tsc) {
kprintf("waited 10 secs for remote TLB!! -> panic_all()\n");
panic_all_cores("waited 10 secs for remote TLB!!\n");
}
#endif
}
#ifdef DEBUG_IC_TLB
}
#endif
ihk_mc_spinlock_unlock_noirq(&flush_entry->lock);
}
#endif /* POSTK_DEBUG_ARCH_DEP_8 */
static void remote_flush_tlb_add_addr(struct clear_range_args *args,
unsigned long addr)
{

3
arch/x86_64/kernel/syscall.c
View File

@@ -1570,7 +1570,8 @@ done:
if (thread != tthread) {
dkprintf("do_kill,ipi,pid=%d,cpu_id=%d\n",
tproc->pid, tthread->cpu_id);
ihk_mc_interrupt_cpu(get_x86_cpu_local_variable(tthread->cpu_id)->apic_id, 0xd0);
ihk_mc_interrupt_cpu(tthread->cpu_id,
ihk_mc_get_vector(IHK_GV_IKC));
}
if (status != PS_RUNNING) {