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| author | Yipeng Zou <zouyipeng@huawei.com> | 2022-09-26 04:58:27 +0300 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2022-10-21 20:11:00 +0300 |
| commit | fdbdb868454a3e83996cf1500c6f7ba73c07a03c (patch) | |
| tree | 50147a66b56739d788139e58f2e22260f75d05ee /kernel/rcu/tree.c | |
| parent | e9f8a790bf682bb4a2f79d0d905b34d55bceb71d (diff) | |
| download | linux-fdbdb868454a3e83996cf1500c6f7ba73c07a03c.tar.xz | |
rcu: Remove rcu_is_idle_cpu()
The commit 3fcd6a230fa7 ("x86/cpu: Avoid cpuinfo-induced IPIing of
idle CPUs") introduced rcu_is_idle_cpu() in order to identify the
current CPU idle state. But commit f3eca381bd49 ("x86/aperfmperf:
Replace arch_freq_get_on_cpu()") switched to using MAX_SAMPLE_AGE,
so rcu_is_idle_cpu() is no longer used. This commit therefore removes it.
Fixes: f3eca381bd49 ("x86/aperfmperf: Replace arch_freq_get_on_cpu()")
Signed-off-by: Yipeng Zou <zouyipeng@huawei.com>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu/tree.c')
| -rw-r--r-- | kernel/rcu/tree.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 5ec97e3f7468..f6561aa401c0 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -301,12 +301,6 @@ static bool rcu_dynticks_in_eqs(int snap) return !(snap & RCU_DYNTICKS_IDX); } -/* Return true if the specified CPU is currently idle from an RCU viewpoint. */ -bool rcu_is_idle_cpu(int cpu) -{ - return rcu_dynticks_in_eqs(rcu_dynticks_snap(cpu)); -} - /* * Return true if the CPU corresponding to the specified rcu_data * structure has spent some time in an extended quiescent state since |