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x86/alternatives: Simplify try_get_text_poke_array()

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There's no need to return a pointer on success - it's always
the same pointer.

Return a bool instead.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Juergen Gross <jgross@suse.com>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250411054105.2341982-32-mingo@kernel.org
This commit is contained in:
Ingo Molnar 2025-04-11 07:40:43 +02:00
parent 3916eec516
commit b6a25841c1
1 changed files with 5 additions and 6 deletions
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11
arch/x86/kernel/alternative.c
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@ -2475,15 +2475,14 @@ static struct smp_text_poke_array {
static DEFINE_PER_CPU(atomic_t, text_poke_array_refs);
static __always_inline
struct smp_text_poke_array *try_get_text_poke_array(void)
static __always_inline bool try_get_text_poke_array(void)
{
atomic_t *refs = this_cpu_ptr(&text_poke_array_refs);
if (!raw_atomic_inc_not_zero(refs))
return NULL;
return false;
return &text_poke_array;
return true;
}
static __always_inline void put_text_poke_array(void)
@ -2530,9 +2529,9 @@ noinstr int smp_text_poke_int3_handler(struct pt_regs *regs)
*/
smp_rmb();
desc = try_get_text_poke_array();
if (!desc)
if (!try_get_text_poke_array())
return 0;
desc = &text_poke_array;
WARN_ON_ONCE(desc->vec != text_poke_array.vec);