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ARM: module: Use RCU in all users of __module_text_address().

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__module_text_address() can be invoked within a RCU section, there is no
requirement to have preemption disabled.

Replace the preempt_disable() section around __module_text_address()
with RCU.

Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250108090457.512198-17-bigeasy@linutronix.de
Signed-off-by: Petr Pavlu <petr.pavlu@suse.com>
This commit is contained in:
Sebastian Andrzej Siewior 2025-01-08 10:04:45 +01:00 committed by Petr Pavlu
parent d593e0cabd
commit 59aa1414bf
1 changed files with 1 additions and 3 deletions
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4
arch/arm/kernel/module-plts.c
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@ -285,11 +285,9 @@ bool in_module_plt(unsigned long loc)
struct module *mod;
bool ret;
preempt_disable();
guard(rcu)();
mod = __module_text_address(loc);
ret = mod && (loc - (u32)mod->arch.core.plt_ent < mod->arch.core.plt_count * PLT_ENT_SIZE ||
loc - (u32)mod->arch.init.plt_ent < mod->arch.init.plt_count * PLT_ENT_SIZE);
preempt_enable();
return ret;
}