riscv: smp: Remove outdated comment about disabling preemption

Commit f1a0a376ca0c ("sched/core: Initialize the idle task with
preemption disabled") removed a call to preempt_disable(), but not the
associated comment. Remove the outdated comment.

Fixes: f1a0a376ca0c ("sched/core: Initialize the idle task with preemption disabled")
Signed-off-by: Vivian Wang <wangruikang@iscas.ac.cn>
Link: https://patch.msgid.link/20260204-riscv-smp-comment-update-2026-01-v1-1-8b77aa181530@iscas.ac.cn
Signed-off-by: Paul Walmsley <pjw@kernel.org>

diff --git a/arch/riscv/kernel/smpboot.c b/arch/riscv/kernel/smpboot.c
index d85916a..0e6fe20 100644 (file)
--- a/arch/riscv/kernel/smpboot.c
+++ b/arch/riscv/kernel/smpboot.c
@@ -259,10 +259,6 @@ asmlinkage __visible void smp_callin(void)
 #ifndef CONFIG_HOTPLUG_PARALLEL
        complete(&cpu_running);
 #endif
-       /*
-        * Disable preemption before enabling interrupts, so we don't try to
-        * schedule a CPU that hasn't actually started yet.
-        */
        local_irq_enable();
        cpu_startup_entry(CPUHP_AP_ONLINE_IDLE);
 }