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| author | Alex Dowad <alexinbeijing@gmail.com> | 2015-03-13 20:14:41 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-03-24 15:15:34 +0100 |
| commit | e2c5aaa5fd3b4038061adf878254cceb30e41ddd (patch) | |
| tree | d5bce49083e82bd04065f85d69532f28e97cc9f3 /arch/mips/kernel/process.c | |
| parent | 9a6a2b96dfd8b01336f8519a5be7fb353cfa62fb (diff) | |
| download | linux-stable-e2c5aaa5fd3b4038061adf878254cceb30e41ddd.tar.gz linux-stable-e2c5aaa5fd3b4038061adf878254cceb30e41ddd.tar.bz2 linux-stable-e2c5aaa5fd3b4038061adf878254cceb30e41ddd.zip | |
mips: copy_thread(): rename 'arg' argument to 'kthread_arg'
The 'arg' argument to copy_thread() is only ever used when forking a new
kernel thread. Hence, rename it to 'kthread_arg' for clarity (and consistency
with do_fork() and other arch-specific implementations of copy_thread()).
Signed-off-by: Alex Dowad <alexinbeijing@gmail.com>
Cc: linux-kernel@vger.kernel.org
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Alex Smith <alex@alex-smith.me.uk>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Eunbong Song <eunb.song@samsung.com>
Cc: linux-mips@linux-mips.org (open list:MIPS)
Patchwork: https://patchwork.linux-mips.org/patch/9546/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/process.c')
| -rw-r--r-- | arch/mips/kernel/process.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index bf85cc180d91..d295bd1e4996 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -107,8 +107,11 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src) return 0; } +/* + * Copy architecture-specific thread state + */ int copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long arg, struct task_struct *p) + unsigned long kthread_arg, struct task_struct *p) { struct thread_info *ti = task_thread_info(p); struct pt_regs *childregs, *regs = current_pt_regs(); @@ -123,11 +126,12 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, childksp = (unsigned long) childregs; p->thread.cp0_status = read_c0_status() & ~(ST0_CU2|ST0_CU1); if (unlikely(p->flags & PF_KTHREAD)) { + /* kernel thread */ unsigned long status = p->thread.cp0_status; memset(childregs, 0, sizeof(struct pt_regs)); ti->addr_limit = KERNEL_DS; p->thread.reg16 = usp; /* fn */ - p->thread.reg17 = arg; + p->thread.reg17 = kthread_arg; p->thread.reg29 = childksp; p->thread.reg31 = (unsigned long) ret_from_kernel_thread; #if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX) @@ -139,6 +143,8 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, childregs->cp0_status = status; return 0; } + + /* user thread */ *childregs = *regs; childregs->regs[7] = 0; /* Clear error flag */ childregs->regs[2] = 0; /* Child gets zero as return value */ |