[patch 22/58] x86/apic/ipi: Code cleanup

From: Thomas Gleixner
Date: Mon Jul 17 2023 - 19:16:32 EST


Remove completely useless and mindlessly copied comments and tidy up the
code which causes eye bleed when looking at it.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
arch/x86/kernel/apic/ipi.c | 23 +++++++----------------
1 file changed, 7 insertions(+), 16 deletions(-)

--- a/arch/x86/kernel/apic/ipi.c
+++ b/arch/x86/kernel/apic/ipi.c
@@ -184,18 +184,13 @@ void default_send_IPI_single_phys(int cp

void default_send_IPI_mask_sequence_phys(const struct cpumask *mask, int vector)
{
- unsigned long query_cpu;
unsigned long flags;
+ unsigned long cpu;

- /*
- * Hack. The clustered APIC addressing mode doesn't allow us to send
- * to an arbitrary mask, so I do a unicast to each CPU instead.
- * - mbligh
- */
local_irq_save(flags);
- for_each_cpu(query_cpu, mask) {
+ for_each_cpu(cpu, mask) {
__default_send_IPI_dest_field(per_cpu(x86_cpu_to_apicid,
- query_cpu), vector, APIC_DEST_PHYSICAL);
+ cpu), vector, APIC_DEST_PHYSICAL);
}
local_irq_restore(flags);
}
@@ -203,18 +198,15 @@ void default_send_IPI_mask_sequence_phys
void default_send_IPI_mask_allbutself_phys(const struct cpumask *mask,
int vector)
{
- unsigned int this_cpu = smp_processor_id();
- unsigned int query_cpu;
+ unsigned int cpu, this_cpu = smp_processor_id();
unsigned long flags;

- /* See Hack comment above */
-
local_irq_save(flags);
- for_each_cpu(query_cpu, mask) {
- if (query_cpu == this_cpu)
+ for_each_cpu(cpu, mask) {
+ if (cpu == this_cpu)
continue;
__default_send_IPI_dest_field(per_cpu(x86_cpu_to_apicid,
- query_cpu), vector, APIC_DEST_PHYSICAL);
+ cpu), vector, APIC_DEST_PHYSICAL);
}
local_irq_restore(flags);
}
@@ -283,7 +275,6 @@ void default_send_IPI_mask_logical(const
local_irq_restore(flags);
}

-/* must come after the send_IPI functions above for inlining */
static int convert_apicid_to_cpu(int apic_id)
{
int i;