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rcu: Remove unused 'cpu' in rcu_virt_note_context_switch() 

This commit removes the unused function argument 'cpu'.  This does not
change functionality, but might save a cycle or two.

Signed-off-by: Zeng Heng <zengheng4@huawei.com>
Acked-by: Mukesh Ojha <quic_mojha@quicinc.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Zeng Heng 2022-09-15 16:38:24 +08:00 committed by Paul E. McKenney
parent 6343402ac3
commit b5ad0d2e88
3 changed files with 3 additions and 3 deletions
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2
include/linux/kvm_host.h
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@ -416,7 +416,7 @@ static __always_inline void guest_context_enter_irqoff(void)
*/ */
if (!context_tracking_guest_enter()) { if (!context_tracking_guest_enter()) {
instrumentation_begin(); instrumentation_begin();
rcu_virt_note_context_switch(smp_processor_id()); rcu_virt_note_context_switch();
instrumentation_end(); instrumentation_end();
} }
} }

2
include/linux/rcutiny.h
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@ -142,7 +142,7 @@ static inline int rcu_needs_cpu(void)
* Take advantage of the fact that there is only one CPU, which * Take advantage of the fact that there is only one CPU, which
* allows us to ignore virtualization-based context switches. * allows us to ignore virtualization-based context switches.
*/ */
static inline void rcu_virt_note_context_switch(int cpu) { } static inline void rcu_virt_note_context_switch(void) { }
static inline void rcu_cpu_stall_reset(void) { } static inline void rcu_cpu_stall_reset(void) { }
static inline int rcu_jiffies_till_stall_check(void) { return 21 * HZ; } static inline int rcu_jiffies_till_stall_check(void) { return 21 * HZ; }
static inline void rcu_irq_exit_check_preempt(void) { } static inline void rcu_irq_exit_check_preempt(void) { }

2
include/linux/rcutree.h
View File

@ -27,7 +27,7 @@ void rcu_cpu_stall_reset(void);
* wrapper around rcu_note_context_switch(), which allows TINY_RCU * wrapper around rcu_note_context_switch(), which allows TINY_RCU
* to save a few bytes. The caller must have disabled interrupts. * to save a few bytes. The caller must have disabled interrupts.
*/ */
static inline void rcu_virt_note_context_switch(int cpu) static inline void rcu_virt_note_context_switch(void)
{ {
rcu_note_context_switch(false); rcu_note_context_switch(false);
} }