From 0bd96853ba723bc3b174e0158a4499758e3296aa Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Fri, 27 Feb 2026 18:01:03 +0100 Subject: [PATCH] efi: Allow to expose the workqueue via sysfs Exposing the efi_rts_wq workqueue via sysfs provides an easy mechanism to restrict EFI firmware invocation to certain CPU(s). This can be used to restrict EFI invocations to specific CPUs while allowing other workqueue to use the remaning CPUs. Expose the workqueue via sysfs. Change the name to efi_runtime which is what will be visible under sysfs. Signed-off-by: Sebastian Andrzej Siewior Acked-by: Ard Biesheuvel Signed-off-by: Tejun Heo --- drivers/firmware/efi/efi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c index b2fb92a4bbd1..3dab284a7754 100644 --- a/drivers/firmware/efi/efi.c +++ b/drivers/firmware/efi/efi.c @@ -423,7 +423,7 @@ static int __init efisubsys_init(void) * ordered workqueue (which creates only one execution context) * should suffice for all our needs. */ - efi_rts_wq = alloc_ordered_workqueue("efi_rts_wq", 0); + efi_rts_wq = alloc_ordered_workqueue("efi_runtime", WQ_SYSFS); if (!efi_rts_wq) { pr_err("Creating efi_rts_wq failed, EFI runtime services disabled.\n"); clear_bit(EFI_RUNTIME_SERVICES, &efi.flags);