doc/kprobes: Update obsolete RCU update functions (1755eced) · Commits · 戴 / test

The RCU flavors have been consolidated, so this commit replaces mentions of the now-obsolete synchronize_sched() function with synchronize_rcu(). Signed-off-by:

Paul E. McKenney <paulmck@linux.ibm.com> Cc: "Naveen N. Rao" <naveen.n.rao@linux.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jonathan Corbet <corbet@lwn.net> Cc: <linux-doc@vger.kernel.org> Acked-by:

Masami Hiramatsu <mhiramat@kernel.org>

Documentation/kprobes.txt

+3 −3

Original line number	Diff line number	Diff line
		@@ -243,10 +243,10 @@ Optimization
		^^^^^^^^^^^^

		The Kprobe-optimizer doesn't insert the jump instruction immediately;
		rather, it calls synchronize_sched() for safety first, because it's
		rather, it calls synchronize_rcu() for safety first, because it's
		possible for a CPU to be interrupted in the middle of executing the
		optimized region [3]_. As you know, synchronize_sched() can ensure
		that all interruptions that were active when synchronize_sched()
		optimized region [3]_. As you know, synchronize_rcu() can ensure
		that all interruptions that were active when synchronize_rcu()
		was called are done, but only if CONFIG_PREEMPT=n. So, this version
		of kprobe optimization supports only kernels with CONFIG_PREEMPT=n [4]_.

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