From d0164ee20d98847d3c777a0ae90e678e7ac1e416 Mon Sep 17 00:00:00 2001 From: Hendrik Brueckner Date: Mon, 29 Jun 2015 16:43:06 +0200 Subject: s390/kernel: remove save_fpu_regs() parameter and use __LC_CURRENT instead All calls to save_fpu_regs() specify the fpu structure of the current task pointer as parameter. The task pointer of the current task can also be retrieved from the CPU lowcore directly. Remove the parameter definition, load the __LC_CURRENT task pointer from the CPU lowcore, and rebase the FPU structure onto the task structure. Apply the same approach for the load_fpu_regs() function. Reviewed-by: Heiko Carstens Signed-off-by: Hendrik Brueckner Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/traps.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/s390/kernel/traps.c') diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c index 76f76932ccb9..9861613fb35a 100644 --- a/arch/s390/kernel/traps.c +++ b/arch/s390/kernel/traps.c @@ -236,7 +236,7 @@ int alloc_vector_registers(struct task_struct *tsk) return -ENOMEM; preempt_disable(); if (tsk == current) - save_fpu_regs(&tsk->thread.fpu); + save_fpu_regs(); /* Copy the 16 floating point registers */ convert_fp_to_vx(vxrs, tsk->thread.fpu.fprs); fprs = tsk->thread.fpu.fprs; @@ -257,7 +257,7 @@ void vector_exception(struct pt_regs *regs) } /* get vector interrupt code from fpc */ - save_fpu_regs(¤t->thread.fpu); + save_fpu_regs(); vic = (current->thread.fpu.fpc & 0xf00) >> 8; switch (vic) { case 1: /* invalid vector operation */ @@ -295,7 +295,7 @@ void data_exception(struct pt_regs *regs) location = get_trap_ip(regs); - save_fpu_regs(¤t->thread.fpu); + save_fpu_regs(); /* Check for vector register enablement */ if (MACHINE_HAS_VX && !is_vx_task(current) && (current->thread.fpu.fpc & FPC_DXC_MASK) == 0xfe00) { -- cgit