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| author | Thomas Gleixner <tglx@linutronix.de> | 2019-07-26 23:19:37 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-07-31 19:03:34 +0200 |
| commit | c1a280b68d4e6b6db4a65aa7865c22d8789ddf09 (patch) | |
| tree | 24c5d965843b44cbe654f5bde0cc68583e3e3321 /init/main.c | |
| parent | 2a11c76e5301dddefcb618dac04f74e6314df6bc (diff) | |
| download | lwn-c1a280b68d4e6b6db4a65aa7865c22d8789ddf09.tar.gz lwn-c1a280b68d4e6b6db4a65aa7865c22d8789ddf09.zip | |
sched/preempt: Use CONFIG_PREEMPTION where appropriate
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 the preemption code, scheduler and init task over to use
CONFIG_PREEMPTION.
That's the first step towards RT in that area. The more complex changes are
coming separately.
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/20190726212124.117528401@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'init/main.c')
| -rw-r--r-- | init/main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/init/main.c b/init/main.c index 96f8d5af52d6..653693da8da6 100644 --- a/init/main.c +++ b/init/main.c @@ -433,7 +433,7 @@ noinline void __ref rest_init(void) /* * Enable might_sleep() and smp_processor_id() checks. - * They cannot be enabled earlier because with CONFIG_PREEMPT=y + * They cannot be enabled earlier because with CONFIG_PREEMPTION=y * kernel_thread() would trigger might_sleep() splats. With * CONFIG_PREEMPT_VOLUNTARY=y the init task might have scheduled * already, but it's stuck on the kthreadd_done completion. |