Waiman Long 925da92ba5 rcu: Avoid unneeded function call in rcu_read_unlock() ... Since commit aa40c138cc ("rcu: Report QS for outermost PREEMPT=n rcu_read_unlock() for strict GPs") the function rcu_read_unlock_strict() is invoked by the inlined rcu_read_unlock() function. However, rcu_read_unlock_strict() is an empty function in production kernels, which are built with CONFIG_RCU_STRICT_GRACE_PERIOD=n. There is a mention of rcu_read_unlock_strict() in the BPF verifier, but this is in a deny-list, meaning that BPF does not care whether rcu_read_unlock_strict() is ever called. This commit therefore provides a slight performance improvement by hoisting the check of CONFIG_RCU_STRICT_GRACE_PERIOD from rcu_read_unlock_strict() into rcu_read_unlock(), thus avoiding the pointless call to an empty function. Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com> Acked-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>		2021-09-16 10:24:05 -07:00
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acpi	Merge branches 'pm-cpufreq', 'pm-sleep' and 'pm-em'	2021-09-10 20:26:08 +02:00
asm-generic	ARM development updates for 5.15:	2021-09-09 13:25:49 -07:00
clocksource
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2021-08-30 12:57:10 -07:00
drm
dt-bindings	linux-watchdog 5.15-rc1 tag	2021-09-07 13:52:46 -07:00
keys
kunit
kvm
linux	rcu: Avoid unneeded function call in rcu_read_unlock()	2021-09-16 10:24:05 -07:00
math-emu
media
memory
misc
net	flow: fix object-size-mismatch warning in flowi{4,6}_to_flowi_common()	2021-09-02 11:44:19 +01:00
pcmcia
ras
rdma
scsi
soc	Merge branches 'clk-nvidia', 'clk-rockchip', 'clk-at91' and 'clk-vc5' into clk-next	2021-09-01 15:26:58 -07:00
sound
target
trace	Merge branch 'akpm' (patches from Andrew)	2021-09-08 12:55:35 -07:00
uapi	virtio,vdpa,vhost: features, fixes	2021-09-11 14:48:42 -07:00
vdso
video
xen