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Subject[tip:x86/irq] x86/irq/64: Rename irq_stack_ptr to hardirq_stack_ptr
Commit-ID:  758a2e312228410f2f5092ade558109e93dc3ee8
Gitweb: https://git.kernel.org/tip/758a2e312228410f2f5092ade558109e93dc3ee8
Author: Thomas Gleixner <tglx@linutronix.de>
AuthorDate: Sun, 14 Apr 2019 18:00:02 +0200
Committer: Borislav Petkov <bp@suse.de>
CommitDate: Wed, 17 Apr 2019 15:27:10 +0200

x86/irq/64: Rename irq_stack_ptr to hardirq_stack_ptr

Preparatory patch to share code with 32bit.

No functional changes.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: "Chang S. Bae" <chang.seok.bae@intel.com>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Nicolai Stange <nstange@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Pingfan Liu <kernelfans@gmail.com>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190414160145.912584074@linutronix.de
---
arch/x86/entry/entry_64.S | 2 +-
arch/x86/include/asm/processor.h | 2 +-
arch/x86/kernel/cpu/common.c | 2 +-
arch/x86/kernel/dumpstack_64.c | 2 +-
arch/x86/kernel/irq_64.c | 2 +-
arch/x86/kernel/setup_percpu.c | 2 +-
6 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index ee649f1f279e..726abbe6c6d8 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -431,7 +431,7 @@ END(irq_entries_start)
*/

movq \old_rsp, PER_CPU_VAR(irq_stack_union + IRQ_STACK_SIZE - 8)
- movq PER_CPU_VAR(irq_stack_ptr), %rsp
+ movq PER_CPU_VAR(hardirq_stack_ptr), %rsp

#ifdef CONFIG_DEBUG_ENTRY
/*
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 0b7d866a1ad5..5e3dd4e2136d 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -396,7 +396,7 @@ static inline unsigned long cpu_kernelmode_gs_base(int cpu)
return (unsigned long)per_cpu(irq_stack_union.gs_base, cpu);
}

-DECLARE_PER_CPU(char *, irq_stack_ptr);
+DECLARE_PER_CPU(char *, hardirq_stack_ptr);
DECLARE_PER_CPU(unsigned int, irq_count);
extern asmlinkage void ignore_sysret(void);

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 88cab45707a9..13ec72bb8f36 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -1510,7 +1510,7 @@ DEFINE_PER_CPU(struct task_struct *, current_task) ____cacheline_aligned =
&init_task;
EXPORT_PER_CPU_SYMBOL(current_task);

-DEFINE_PER_CPU(char *, irq_stack_ptr) =
+DEFINE_PER_CPU(char *, hardirq_stack_ptr) =
init_per_cpu_var(irq_stack_union.irq_stack) + IRQ_STACK_SIZE;

DEFINE_PER_CPU(unsigned int, irq_count) __visible = -1;
diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c
index f356d3ea0c70..753b8cfe8b8a 100644
--- a/arch/x86/kernel/dumpstack_64.c
+++ b/arch/x86/kernel/dumpstack_64.c
@@ -120,7 +120,7 @@ static bool in_exception_stack(unsigned long *stack, struct stack_info *info)

static bool in_irq_stack(unsigned long *stack, struct stack_info *info)
{
- unsigned long *end = (unsigned long *)this_cpu_read(irq_stack_ptr);
+ unsigned long *end = (unsigned long *)this_cpu_read(hardirq_stack_ptr);
unsigned long *begin = end - (IRQ_STACK_SIZE / sizeof(long));

/*
diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c
index 7eb6f8d11bfd..f0c7356c8969 100644
--- a/arch/x86/kernel/irq_64.c
+++ b/arch/x86/kernel/irq_64.c
@@ -56,7 +56,7 @@ static inline void stack_overflow_check(struct pt_regs *regs)
regs->sp <= curbase + THREAD_SIZE)
return;

- irq_stack_top = (u64)__this_cpu_read(irq_stack_ptr);
+ irq_stack_top = (u64)__this_cpu_read(hardirq_stack_ptr);
irq_stack_bottom = irq_stack_top - IRQ_STACK_SIZE + STACK_MARGIN;
if (regs->sp >= irq_stack_bottom && regs->sp <= irq_stack_top)
return;
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index 4bf46575568a..657343ecc2da 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -245,7 +245,7 @@ void __init setup_per_cpu_areas(void)
early_per_cpu_map(x86_cpu_to_logical_apicid, cpu);
#endif
#ifdef CONFIG_X86_64
- per_cpu(irq_stack_ptr, cpu) =
+ per_cpu(hardirq_stack_ptr, cpu) =
per_cpu(irq_stack_union.irq_stack, cpu) +
IRQ_STACK_SIZE;
#endif
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