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

The argument is unused since commit 3d28ebc ("x86/mm: Rework lazy TLB to track the actual loaded mm"), delete it. Link: https://lkml.kernel.org/r/20240126080644.1714297-1-yosryahmed@google.com Signed-off-by: Yosry Ahmed <yosryahmed@google.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov (AMD) <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
mariux64 · Feb 22, 2024 · 7dbbc8f · 7dbbc8f
1 parent 5cec4eb
commit 7dbbc8f
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Showing 6 changed files with 6 additions and 6 deletions.
diff --git a/arch/x86/include/asm/mmu.h b/arch/x86/include/asm/mmu.h
@@ -75,7 +75,7 @@ typedef struct {
 		.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 */
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
@@ -1805,7 +1805,7 @@ static inline temp_mm_state_t use_temporary_mm(struct mm_struct *mm)
 	 * 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);

diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
@@ -299,7 +299,7 @@ static void load_new_mm_cr3(pgd_t *pgdir, u16 new_asid, unsigned long lam,
 	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);
 

diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c
@@ -913,7 +913,7 @@ static void drop_mm_ref_this_cpu(void *info)
 	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

diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
@@ -237,7 +237,7 @@ noinstr int cpuidle_enter_state(struct cpuidle_device *dev,
 	}
 
 	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);

diff --git a/include/linux/mmu_context.h b/include/linux/mmu_context.h
@@ -11,7 +11,7 @@
 #endif
 
 #ifndef leave_mm
-static inline void leave_mm(int cpu) { }
+static inline void leave_mm(void) { }
 #endif
 
 /*