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kprobes: Use CONFIG_PREEMPTION

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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@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Paul E. McKenney <paulmck@linux.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/20190726212124.516286187@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Thomas Gleixner 2019-07-26 23:19:41 +02:00 committed by Ingo Molnar
parent 30c937043b
commit 9261660636
1 changed files with 1 additions and 1 deletions
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2
kernel/kprobes.c
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@ -1906,7 +1906,7 @@ int register_kretprobe(struct kretprobe *rp)
/* Pre-allocate memory for max kretprobe instances */ /* Pre-allocate memory for max kretprobe instances */
if (rp->maxactive <= 0) { if (rp->maxactive <= 0) {
#ifdef CONFIG_PREEMPT #ifdef CONFIG_PREEMPTION
rp->maxactive = max_t(unsigned int, 10, 2*num_possible_cpus()); rp->maxactive = max_t(unsigned int, 10, 2*num_possible_cpus());
#else #else
rp->maxactive = num_possible_cpus(); rp->maxactive = num_possible_cpus();