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riscv: Fix unaligned access info messages

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Ensure we only print messages about command line parameters when
the parameters are actually in use. Also complain about the use
of the vector parameter when vector support isn't available.

Fixes: aecb09e091dc ("riscv: Add parameter for skipping access speed tests")
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Closes: https://lore.kernel.org/all/CAMuHMdVEp2_ho51gkpLLJG2HimqZ1gZ0fa=JA4uNNZjFFqaPMg@mail.gmail.com/
Closes: https://lore.kernel.org/all/CAMuHMdWVMP0MYCLFq+b7H_uz-2omdFiDDUZq0t_gw0L9rrJtkQ@mail.gmail.com/
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20250409153650.84433-2-ajones@ventanamicro.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
This commit is contained in:
Andrew Jones 2025-04-09 17:36:51 +02:00 committed by Alexandre Ghiti
parent 70fc03cd76
commit 4410160560
1 changed files with 21 additions and 14 deletions
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35
arch/riscv/kernel/unaligned_access_speed.c
View File

@ -439,29 +439,36 @@ static int __init check_unaligned_access_all_cpus(void)
{
int cpu;
if (unaligned_scalar_speed_param == RISCV_HWPROBE_MISALIGNED_SCALAR_UNKNOWN &&
!check_unaligned_access_emulated_all_cpus()) {
check_unaligned_access_speed_all_cpus();
} else {
pr_info("scalar unaligned access speed set to '%s' by command line\n",
speed_str[unaligned_scalar_speed_param]);
if (unaligned_scalar_speed_param != RISCV_HWPROBE_MISALIGNED_SCALAR_UNKNOWN) {
pr_info("scalar unaligned access speed set to '%s' (%lu) by command line\n",
speed_str[unaligned_scalar_speed_param], unaligned_scalar_speed_param);
for_each_online_cpu(cpu)
per_cpu(misaligned_access_speed, cpu) = unaligned_scalar_speed_param;
} else if (!check_unaligned_access_emulated_all_cpus()) {
check_unaligned_access_speed_all_cpus();
}
if (unaligned_vector_speed_param != RISCV_HWPROBE_MISALIGNED_VECTOR_UNKNOWN) {
if (!has_vector() &&
unaligned_vector_speed_param != RISCV_HWPROBE_MISALIGNED_VECTOR_UNSUPPORTED) {
pr_warn("vector support is not available, ignoring unaligned_vector_speed=%s\n",
speed_str[unaligned_vector_speed_param]);
} else {
pr_info("vector unaligned access speed set to '%s' (%lu) by command line\n",
speed_str[unaligned_vector_speed_param], unaligned_vector_speed_param);
}
}
if (!has_vector())
unaligned_vector_speed_param = RISCV_HWPROBE_MISALIGNED_VECTOR_UNSUPPORTED;
if (unaligned_vector_speed_param == RISCV_HWPROBE_MISALIGNED_VECTOR_UNKNOWN &&
!check_vector_unaligned_access_emulated_all_cpus() &&
IS_ENABLED(CONFIG_RISCV_PROBE_VECTOR_UNALIGNED_ACCESS)) {
kthread_run(vec_check_unaligned_access_speed_all_cpus,
NULL, "vec_check_unaligned_access_speed_all_cpus");
} else {
pr_info("vector unaligned access speed set to '%s' by command line\n",
speed_str[unaligned_vector_speed_param]);
if (unaligned_vector_speed_param != RISCV_HWPROBE_MISALIGNED_VECTOR_UNKNOWN) {
for_each_online_cpu(cpu)
per_cpu(vector_misaligned_access, cpu) = unaligned_vector_speed_param;
} else if (!check_vector_unaligned_access_emulated_all_cpus() &&
IS_ENABLED(CONFIG_RISCV_PROBE_VECTOR_UNALIGNED_ACCESS)) {
kthread_run(vec_check_unaligned_access_speed_all_cpus,
NULL, "vec_check_unaligned_access_speed_all_cpus");
}
/*