arm64: mm: Drop the unused cpu parameter

Cpu parameter is never used in flush_context, remove it.
Acked-by: NWill Deacon <will.deacon@arm.com>
Signed-off-by: NShaokun Zhang <zhangshaokun@hisilicon.com>
Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>

arch/arm64/mm/context.c

@@ -88,7 +88,7 @@ void verify_cpu_asid_bits(void)
 	}
 }
 
-static void flush_context(unsigned int cpu)
+static void flush_context(void)
 {
 	int i;
 	u64 asid;
@@ -142,7 +142,7 @@ static bool check_update_reserved_asid(u64 asid, u64 newasid)
 	return hit;
 }
 
-static u64 new_context(struct mm_struct *mm, unsigned int cpu)
+static u64 new_context(struct mm_struct *mm)
 {
 	static u32 cur_idx = 1;
 	u64 asid = atomic64_read(&mm->context.id);
@@ -180,7 +180,7 @@ static u64 new_context(struct mm_struct *mm, unsigned int cpu)
 	/* We're out of ASIDs, so increment the global generation count */
 	generation = atomic64_add_return_relaxed(ASID_FIRST_VERSION,
 						 &asid_generation);
-	flush_context(cpu);
+	flush_context();
 
 	/* We have more ASIDs than CPUs, so this will always succeed */
 	asid = find_next_zero_bit(asid_map, NUM_USER_ASIDS, 1);
@@ -226,7 +226,7 @@ void check_and_switch_context(struct mm_struct *mm, unsigned int cpu)
 	/* Check that our ASID belongs to the current generation. */
 	asid = atomic64_read(&mm->context.id);
 	if ((asid ^ atomic64_read(&asid_generation)) >> asid_bits) {
-		asid = new_context(mm, cpu);
+		asid = new_context(mm);
 		atomic64_set(&mm->context.id, asid);
 	}