x86/mm: delete unused cpu argument to leave_mm()

The argument is unused since commit 3d28ebceaffa ("x86/mm: Rework lazy
TLB to track the actual loaded mm"), delete it.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Yosry Ahmed <[e-mail]>
Cc: Andy Lutomirski <[e-mail]>
Cc: Borislav Petkov (AMD) <[e-mail]>
Cc: Dave Hansen <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Thomas Gleixner <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>

arch/x86/include/asm/mmu.h

···
 		.lock = __MUTEX_INITIALIZER(mm.context.lock),		\
 	}
 
-void leave_mm(int cpu);
+void leave_mm(void);
 #define leave_mm leave_mm
 
 #endif /* _ASM_X86_MMU_H */

arch/x86/kernel/alternative.c

···
 	 * restoring the previous mm.
 	 */
 	if (this_cpu_read(cpu_tlbstate_shared.is_lazy))
-		leave_mm(smp_processor_id());
+		leave_mm();
 
 	temp_state.mm = this_cpu_read(cpu_tlbstate.loaded_mm);
 	switch_mm_irqs_off(NULL, mm, current);

arch/x86/mm/tlb.c

···
 	write_cr3(new_mm_cr3);
 }
 
-void leave_mm(int cpu)
+void leave_mm(void)
 {
 	struct mm_struct *loaded_mm = this_cpu_read(cpu_tlbstate.loaded_mm);
 

arch/x86/xen/mmu_pv.c

···
 	struct mm_struct *mm = info;
 
 	if (this_cpu_read(cpu_tlbstate.loaded_mm) == mm)
-		leave_mm(smp_processor_id());
+		leave_mm();
 
 	/*
 	 * If this cpu still has a stale cr3 reference, then make sure

drivers/cpuidle/cpuidle.c

···
 	}
 
 	if (target_state->flags & CPUIDLE_FLAG_TLB_FLUSHED)
-		leave_mm(dev->cpu);
+		leave_mm();
 
 	/* Take note of the planned idle state. */
 	sched_idle_set_state(target_state);

include/linux/mmu_context.h

···
 #endif
 
 #ifndef leave_mm
-static inline void leave_mm(int cpu) { }
+static inline void leave_mm(void) { }
 #endif
 
 /*