linux-kernel - [patch 5/8] kprobes: Use CONFIG

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Date:   Fri, 26 Jul 2019 23:19:41 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     x86@...nel.org, Steven Rostedt <rostedt@...dmis.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        "Paul E. McKenney" <paulmck@...ux.ibm.com>,
        Paolo Bonzini <pbonzini@...hat.com>
Subject: [patch 5/8] kprobes: Use CONFIG_PREEMPTION

CONFIG_PREEMPTION is selected by CONFIG_PREEMPT and by
CONFIG_PREEMPT_RT. Both PREEMPT and PREEMPT_RT require the same
functionality which today depends on CONFIG_PREEMPT.

Switch kprobes conditional over to CONFIG_PREEMPTION.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Masami Hiramatsu <mhiramat@...nel.org>
---
 kernel/kprobes.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -1906,7 +1906,7 @@ int register_kretprobe(struct kretprobe
 
 	/* Pre-allocate memory for max kretprobe instances */
 	if (rp->maxactive <= 0) {
-#ifdef CONFIG_PREEMPT
+#ifdef CONFIG_PREEMPTION
 		rp->maxactive = max_t(unsigned int, 10, 2*num_possible_cpus());
 #else
 		rp->maxactive = num_possible_cpus();