[PATCH v7 09/14] riscv: misaligned: move emulated access uniformity check in a function

[Clément Léger]

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 <cle...@rivosinc.com>
Reviewed-by: Andrew Jones <ajo...@ventanamicro.com>
---
 arch/riscv/kernel/traps_misaligned.c | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/arch/riscv/kernel/traps_misaligned.c 
b/arch/riscv/kernel/traps_misaligned.c
index e551ba17f557..287ec37021c8 100644
--- a/arch/riscv/kernel/traps_misaligned.c
+++ b/arch/riscv/kernel/traps_misaligned.c
@@ -647,6 +647,18 @@ bool __init 
check_vector_unaligned_access_emulated_all_cpus(void)
 }
 #endif
 
+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;
+}
+
 #ifdef CONFIG_RISCV_SCALAR_MISALIGNED
 
 static bool unaligned_ctl __read_mostly;
@@ -685,8 +697,6 @@ static int 
cpu_online_check_unaligned_access_emulated(unsigned int cpu)
 
 bool __init check_unaligned_access_emulated_all_cpus(void)
 {
-       int cpu;
-
        /*
         * We can only support PR_UNALIGN controls if all CPUs have misaligned
         * accesses emulated since tasks requesting such control can run on any
@@ -694,10 +704,8 @@ bool __init 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;
-- 
2.49.0