[v2,05/15] riscv: misaligned: move emulated access uniformity check in a function

Commit Message

Clément Léger Feb. 10, 2025, 9:35 p.m. UTC

Split the code that check for the uniformity of misaligned accesses
performance on all cpus from check_unaligned_access_emulated_all_cpus()
to its own function which will be used for delegation check. No
functional changes intended.

Signed-off-by: Clément Léger <[e-mail]>
---
 arch/riscv/kernel/traps_misaligned.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

Patch

diff --git a/arch/riscv/kernel/traps_misaligned.c b/arch/riscv/kernel/traps_misaligned.c
index 57ded7e74dd8..7d6185deea33 100644
--- a/arch/riscv/kernel/traps_misaligned.c
+++ b/arch/riscv/kernel/traps_misaligned.c
@@ -673,10 +673,20 @@  static int cpu_online_check_unaligned_access_emulated(unsigned int cpu)
 	return 0;
 }
 
-bool check_unaligned_access_emulated_all_cpus(void)
+static bool all_cpus_unaligned_scalar_access_emulated(void)
 {
 	int cpu;
 
+	for_each_online_cpu(cpu)
+		if (per_cpu(misaligned_access_speed, cpu) !=
+		    RISCV_HWPROBE_MISALIGNED_SCALAR_EMULATED)
+			return false;
+
+	return true;
+}
+
+bool check_unaligned_access_emulated_all_cpus(void)
+{
 	/*
 	 * We can only support PR_UNALIGN controls if all CPUs have misaligned
 	 * accesses emulated since tasks requesting such control can run on any
@@ -684,10 +694,8 @@  bool check_unaligned_access_emulated_all_cpus(void)
 	 */
 	on_each_cpu(check_unaligned_access_emulated, NULL, 1);
 
-	for_each_online_cpu(cpu)
-		if (per_cpu(misaligned_access_speed, cpu)
-		    != RISCV_HWPROBE_MISALIGNED_SCALAR_EMULATED)
-			return false;
+	if (!all_cpus_unaligned_scalar_access_emulated())
+		return false;
 
 	unaligned_ctl = true;
 	return true;