srcu: Add SRCU_READ_FLAVOR_FAST_UPDOWN CPP macro

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This commit adds the SRCU_READ_FLAVOR_FAST_UPDOWN=0x8 macro
and adjusts rcutorture to make use of it.  In this commit, both
SRCU_READ_FLAVOR_FAST=0x4 and the new SRCU_READ_FLAVOR_FAST_UPDOWN
test SRCU-fast.  When the SRCU-fast-updown is added, the new
SRCU_READ_FLAVOR_FAST_UPDOWN macro will test it when passed to the
rcutorture.reader_flavor module parameter.

The old SRCU_READ_FLAVOR_FAST macro's value changed from 0x8 to 0x4.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: <bpf@vger.kernel.org>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>

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This commit is contained in:

Paul E. McKenney 2025-11-05 12:32:12 -08:00 • committed by Frederic Weisbecker

parent 3ed04e3f03

commit 37827223f8

2 changed files with 27 additions and 13 deletions

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16

include/linux/srcu.h

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24

kernel/rcu/rcutorture.c

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