Commit a1195ae3 authored by Kumar Gala's avatar Kumar Gala Committed by Carles Cufi
Browse files

smp: Move for loops to use arch_num_cpus instead of CONFIG_MP_NUM_CPUS 



Change for loops of the form:

for (i = 0; i < CONFIG_MP_NUM_CPUS; i++)
   ...

to

unsigned int num_cpus = arch_num_cpus();
for (i = 0; i < num_cpus; i++)
   ...

We do the call outside of the for loop so that it only happens once,
rather than on every iteration.

Signed-off-by: default avatarKumar Gala <kumar.gala@intel.com>
parent 77dcf91f

arch/arc/core/arc_smp.c

+3 −1
Original line number Diff line number Diff line
@@ -133,7 +133,9 @@ void arch_sched_ipi(void) 
	/* broadcast sched_ipi request to other cores

	 * if the target is current core, hardware will ignore it

	 */

	for (i = 0U; i < CONFIG_MP_NUM_CPUS; i++) {

	unsigned int num_cpus = arch_num_cpus();



	for (i = 0U; i < num_cpus; i++) {

		z_arc_connect_ici_generate(i);

	}

}

arch/arm64/core/fpu.c

+3 −1
Original line number Diff line number Diff line
@@ -96,7 +96,9 @@ static void flush_owned_fpu(struct k_thread *thread) 
	int i;



	/* search all CPUs for the owner we want */

	for (i = 0; i < CONFIG_MP_NUM_CPUS; i++) {

	unsigned int num_cpus = arch_num_cpus();



	for (i = 0; i < num_cpus; i++) {

		if (_kernel.cpus[i].arch.fpu_owner != thread) {

			continue;

		}

arch/arm64/core/smp.c

+3 −1
Original line number Diff line number Diff line
@@ -160,7 +160,9 @@ static void broadcast_ipi(unsigned int ipi) 
	/*

	 * Send SGI to all cores except itself

	 */

	for (int i = 0; i < CONFIG_MP_NUM_CPUS; i++) {

	unsigned int num_cpus = arch_num_cpus();



	for (int i = 0; i < num_cpus; i++) {

		uint64_t target_mpidr = cpu_node_list[i];

		uint8_t aff0 = MPIDR_AFFLVL(target_mpidr, 0);

arch/riscv/core/smp.c

+3 −1
Original line number Diff line number Diff line
@@ -67,7 +67,9 @@ void arch_sched_ipi(void) 
	key = arch_irq_lock();



	id = _current_cpu->id;

	for (i = 0U; i < CONFIG_MP_NUM_CPUS; i++) {

	unsigned int num_cpus = arch_num_cpus();



	for (i = 0U; i < num_cpus; i++) {

		if (i != id) {

			volatile uint32_t *r = (uint32_t *)get_hart_msip(i);

			*r = 1U;

arch/x86/core/prep_c.c

+3 −1
Original line number Diff line number Diff line
@@ -67,7 +67,9 @@ FUNC_NORETURN void z_x86_prep_c(void *arg) 
#endif



#if CONFIG_X86_STACK_PROTECTION

	for (int i = 0; i < CONFIG_MP_NUM_CPUS; i++) {

	unsigned int num_cpus = arch_num_cpus();



	for (int i = 0; i < num_cpus; i++) {

		z_x86_set_stack_guard(z_interrupt_stacks[i]);

	}

#endif

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