[PATCH 26/35] x86/process: Change copy_thread() argument 'arg' to 'stack_size'
From: Rick Edgecombe <rick.p.edgecombe@intel.com>
Date: 2022-01-30 21:25:58
Also in:
linux-arch, linux-doc, linux-mm, lkml
Subsystem:
the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
From: Yu-cheng Yu <redacted> The single call site of copy_thread() passes stack size in 'arg'. To make this clear and in preparation of using this argument for shadow stack allocation, change 'arg' to 'stack_size'. No functional changes. Signed-off-by: Yu-cheng Yu <redacted> Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com> --- arch/x86/kernel/process.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 81d8ef036637..82a816178e7f 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c@@ -130,8 +130,9 @@ static int set_new_tls(struct task_struct *p, unsigned long tls) return do_set_thread_area_64(p, ARCH_SET_FS, tls); } -int copy_thread(unsigned long clone_flags, unsigned long sp, unsigned long arg, - struct task_struct *p, unsigned long tls) +int copy_thread(unsigned long clone_flags, unsigned long sp, + unsigned long stack_size, struct task_struct *p, + unsigned long tls) { struct inactive_task_frame *frame; struct fork_frame *fork_frame;
@@ -175,7 +176,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, unsigned long arg, if (unlikely(p->flags & PF_KTHREAD)) { p->thread.pkru = pkru_get_init_value(); memset(childregs, 0, sizeof(struct pt_regs)); - kthread_frame_init(frame, sp, arg); + kthread_frame_init(frame, sp, stack_size); return 0; }
@@ -208,7 +209,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, unsigned long arg, */ childregs->sp = 0; childregs->ip = 0; - kthread_frame_init(frame, sp, arg); + kthread_frame_init(frame, sp, stack_size); return 0; }
--
2.17.1