riscv: Annotate unaligned access init functions

Several functions used in unaligned access probing are only run at
init time. Annotate them appropriately.

Fixes: f413aae96cda ("riscv: Set unaligned access speed at compile time")
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20250304120014.143628-11-ajones@ventanamicro.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>

diff --git a/arch/riscv/include/asm/cpufeature.h b/arch/riscv/include/asm/cpufeature.h
index 569140d6e6399ee850b7bb262eb72ebf0f891ce7..19defdc2002d8587ab8ea19d0388befeb2c278b9 100644 (file)
--- a/arch/riscv/include/asm/cpufeature.h
+++ b/arch/riscv/include/asm/cpufeature.h
@@ -63,7 +63,7 @@ void __init riscv_user_isa_enable(void);
 #define __RISCV_ISA_EXT_SUPERSET_VALIDATE(_name, _id, _sub_exts, _validate) \
        _RISCV_ISA_EXT_DATA(_name, _id, _sub_exts, ARRAY_SIZE(_sub_exts), _validate)
 
-bool check_unaligned_access_emulated_all_cpus(void);
+bool __init check_unaligned_access_emulated_all_cpus(void);
 #if defined(CONFIG_RISCV_SCALAR_MISALIGNED)
 void check_unaligned_access_emulated(struct work_struct *work __always_unused);
 void unaligned_emulation_finish(void);
@@ -76,7 +76,7 @@ static inline bool unaligned_ctl_available(void)
 }
 #endif
 
-bool check_vector_unaligned_access_emulated_all_cpus(void);
+bool __init check_vector_unaligned_access_emulated_all_cpus(void);
 #if defined(CONFIG_RISCV_VECTOR_MISALIGNED)
 void check_vector_unaligned_access_emulated(struct work_struct *work __always_unused);
 DECLARE_PER_CPU(long, vector_misaligned_access);

diff --git a/arch/riscv/kernel/traps_misaligned.c b/arch/riscv/kernel/traps_misaligned.c
index 7cc108aed74e8b946edc6927ae6b64845ef08024..aacbd9d7196e77d527f9f79916f14de6a6fe882c 100644 (file)
--- a/arch/riscv/kernel/traps_misaligned.c
+++ b/arch/riscv/kernel/traps_misaligned.c
@@ -605,7 +605,7 @@ void check_vector_unaligned_access_emulated(struct work_struct *work __always_un
        kernel_vector_end();
 }
 
-bool check_vector_unaligned_access_emulated_all_cpus(void)
+bool __init check_vector_unaligned_access_emulated_all_cpus(void)
 {
        int cpu;
 
@@ -625,7 +625,7 @@ bool check_vector_unaligned_access_emulated_all_cpus(void)
        return true;
 }
 #else
-bool check_vector_unaligned_access_emulated_all_cpus(void)
+bool __init check_vector_unaligned_access_emulated_all_cpus(void)
 {
        return false;
 }
@@ -659,7 +659,7 @@ void check_unaligned_access_emulated(struct work_struct *work __always_unused)
        }
 }
 
-bool check_unaligned_access_emulated_all_cpus(void)
+bool __init check_unaligned_access_emulated_all_cpus(void)
 {
        int cpu;
 
@@ -684,7 +684,7 @@ bool unaligned_ctl_available(void)
        return unaligned_ctl;
 }
 #else
-bool check_unaligned_access_emulated_all_cpus(void)
+bool __init check_unaligned_access_emulated_all_cpus(void)
 {
        return false;
 }

diff --git a/arch/riscv/kernel/unaligned_access_speed.c b/arch/riscv/kernel/unaligned_access_speed.c
index 91f189cf16113c9ab1f3a1c4789cf0b288325cb1..b7a8ff7ba6df43d77aa198e23c0ae22a09907025 100644 (file)
--- a/arch/riscv/kernel/unaligned_access_speed.c
+++ b/arch/riscv/kernel/unaligned_access_speed.c
@@ -121,7 +121,7 @@ static int check_unaligned_access(void *param)
        return 0;
 }
 
-static void check_unaligned_access_nonboot_cpu(void *param)
+static void __init check_unaligned_access_nonboot_cpu(void *param)
 {
        unsigned int cpu = smp_processor_id();
        struct page **pages = param;
@@ -175,7 +175,7 @@ static void set_unaligned_access_static_branches(void)
        modify_unaligned_access_branches(&fast_and_online, num_online_cpus());
 }
 
-static int lock_and_set_unaligned_access_static_branch(void)
+static int __init lock_and_set_unaligned_access_static_branch(void)
 {
        cpus_read_lock();
        set_unaligned_access_static_branches();
@@ -218,7 +218,7 @@ static int riscv_offline_cpu(unsigned int cpu)
 }
 
 /* Measure unaligned access speed on all CPUs present at boot in parallel. */
-static int check_unaligned_access_speed_all_cpus(void)
+static int __init check_unaligned_access_speed_all_cpus(void)
 {
        unsigned int cpu;
        unsigned int cpu_count = num_possible_cpus();
@@ -264,7 +264,7 @@ out:
        return 0;
 }
 #else /* CONFIG_RISCV_PROBE_UNALIGNED_ACCESS */
-static int check_unaligned_access_speed_all_cpus(void)
+static int __init check_unaligned_access_speed_all_cpus(void)
 {
        return 0;
 }
@@ -379,7 +379,7 @@ static int riscv_online_cpu_vec(unsigned int cpu)
 }
 
 /* Measure unaligned access speed on all CPUs present at boot in parallel. */
-static int vec_check_unaligned_access_speed_all_cpus(void *unused __always_unused)
+static int __init vec_check_unaligned_access_speed_all_cpus(void *unused __always_unused)
 {
        schedule_on_each_cpu(check_vector_unaligned_access);
 
@@ -393,13 +393,13 @@ static int vec_check_unaligned_access_speed_all_cpus(void *unused __always_unuse
        return 0;
 }
 #else /* CONFIG_RISCV_PROBE_VECTOR_UNALIGNED_ACCESS */
-static int vec_check_unaligned_access_speed_all_cpus(void *unused __always_unused)
+static int __init vec_check_unaligned_access_speed_all_cpus(void *unused __always_unused)
 {
        return 0;
 }
 #endif
 
-static int check_unaligned_access_all_cpus(void)
+static int __init check_unaligned_access_all_cpus(void)
 {
        bool all_cpus_emulated, all_cpus_vec_unsupported;