[tip: x86/alternatives] x86/alternatives: Simplify and clean up patch_cmp()

[tip-bot2 for Ingo Molnar]

The following commit has been merged into the x86/alternatives branch of tip:

Commit-ID:     3e6f47573ec3ed1d9dc50243fbcf50c87f740853
Gitweb:        https://git.kernel.org/tip/3e6f47573ec3ed1d9dc50243fbcf50c87f740853
Author:        Ingo Molnar <mingo@xxxxxxxxxx>
AuthorDate:    Fri, 11 Apr 2025 07:40:55 +02:00
Committer:     Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Fri, 11 Apr 2025 11:01:35 +02:00

x86/alternatives: Simplify and clean up patch_cmp()

- No need to cast over to 'struct smp_text_poke_loc *', void * is just fine
  for a binary search,

- Use the canonical (a, b) input parameter nomenclature of cmp_func_t
  functions and rename the input parameters from (tp, elt) to
  (tpl_a, tpl_b).

Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Juergen Gross <jgross@xxxxxxxx>
Cc: "H . Peter Anvin" <hpa@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20250411054105.2341982-44-mingo@xxxxxxxxxx
---
 arch/x86/kernel/alternative.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index 14ca17d..f278655 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -2498,13 +2498,11 @@ static __always_inline void *text_poke_addr(const struct smp_text_poke_loc *tp)
 	return _stext + tp->rel_addr;
 }
 
-static __always_inline int patch_cmp(const void *key, const void *elt)
+static __always_inline int patch_cmp(const void *tpl_a, const void *tpl_b)
 {
-	struct smp_text_poke_loc *tp = (struct smp_text_poke_loc *) elt;
-
-	if (key < text_poke_addr(tp))
+	if (tpl_a < text_poke_addr(tpl_b))
 		return -1;
-	if (key > text_poke_addr(tp))
+	if (tpl_a > text_poke_addr(tpl_b))
 		return 1;
 	return 0;
 }