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From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Michael Ellerman <mpe@ellerman.id.au>
Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v8 9/9] powerpc: clean stack pointers naming
Date: Tue, 16 Oct 2018 05:07:06 +0000 (UTC)	[thread overview]
Message-ID: <a931d77b41569b0052be54df1fb76e48adcb0095.1539623260.git.christophe.leroy@c-s.fr> (raw)
In-Reply-To: <cover.1539623258.git.christophe.leroy@c-s.fr>

Some stack pointers used to also be thread_info pointers
and were called tp. Now that they are only stack pointers,
rename them sp.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
 arch/powerpc/kernel/irq.c      | 17 +++++++----------
 arch/powerpc/kernel/setup_64.c | 20 ++++++++++----------
 2 files changed, 17 insertions(+), 20 deletions(-)

diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 62cfccf4af89..754f0efc507b 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -659,21 +659,21 @@ void __do_irq(struct pt_regs *regs)
 void do_IRQ(struct pt_regs *regs)
 {
 	struct pt_regs *old_regs = set_irq_regs(regs);
-	void *curtp, *irqtp, *sirqtp;
+	void *cursp, *irqsp, *sirqsp;
 
 	/* Switch to the irq stack to handle this */
-	curtp = (void *)(current_stack_pointer() & ~(THREAD_SIZE - 1));
-	irqtp = hardirq_ctx[raw_smp_processor_id()];
-	sirqtp = softirq_ctx[raw_smp_processor_id()];
+	cursp = (void *)(current_stack_pointer() & ~(THREAD_SIZE - 1));
+	irqsp = hardirq_ctx[raw_smp_processor_id()];
+	sirqsp = softirq_ctx[raw_smp_processor_id()];
 
 	/* Already there ? */
-	if (unlikely(curtp == irqtp || curtp == sirqtp)) {
+	if (unlikely(cursp == irqsp || cursp == sirqsp)) {
 		__do_irq(regs);
 		set_irq_regs(old_regs);
 		return;
 	}
 	/* Switch stack and call */
-	call_do_irq(regs, irqtp);
+	call_do_irq(regs, irqsp);
 
 	set_irq_regs(old_regs);
 }
@@ -732,10 +732,7 @@ void irq_ctx_init(void)
 
 void do_softirq_own_stack(void)
 {
-	void *irqtp;
-
-	irqtp = softirq_ctx[smp_processor_id()];
-	call_do_softirq(irqtp);
+	call_do_softirq(softirq_ctx[smp_processor_id()]);
 }
 
 irq_hw_number_t virq_to_hw(unsigned int virq)
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 6792e9c90689..4912ec0320b8 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -717,22 +717,22 @@ void __init emergency_stack_init(void)
 	limit = min(ppc64_bolted_size(), ppc64_rma_size);
 
 	for_each_possible_cpu(i) {
-		void *ti;
+		void *sp;
 
-		ti = alloc_stack(limit, i);
-		memset(ti, 0, THREAD_SIZE);
-		paca_ptrs[i]->emergency_sp = ti + THREAD_SIZE;
+		sp = alloc_stack(limit, i);
+		memset(sp, 0, THREAD_SIZE);
+		paca_ptrs[i]->emergency_sp = sp + THREAD_SIZE;
 
 #ifdef CONFIG_PPC_BOOK3S_64
 		/* emergency stack for NMI exception handling. */
-		ti = alloc_stack(limit, i);
-		memset(ti, 0, THREAD_SIZE);
-		paca_ptrs[i]->nmi_emergency_sp = ti + THREAD_SIZE;
+		sp = alloc_stack(limit, i);
+		memset(sp, 0, THREAD_SIZE);
+		paca_ptrs[i]->nmi_emergency_sp = sp + THREAD_SIZE;
 
 		/* emergency stack for machine check exception handling. */
-		ti = alloc_stack(limit, i);
-		memset(ti, 0, THREAD_SIZE);
-		paca_ptrs[i]->mc_emergency_sp = ti + THREAD_SIZE;
+		sp = alloc_stack(limit, i);
+		memset(sp, 0, THREAD_SIZE);
+		paca_ptrs[i]->mc_emergency_sp = sp + THREAD_SIZE;
 #endif
 	}
 }
-- 
2.13.3


      parent reply	other threads:[~2018-10-16  5:07 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-16  5:06 [PATCH v8 0/9] powerpc: Switch to CONFIG_THREAD_INFO_IN_TASK Christophe Leroy
2018-10-16  5:06 ` [PATCH v8 1/9] book3s/64: avoid circular header inclusion in mmu-hash.h Christophe Leroy
2018-10-16  5:06 ` [PATCH v8 2/9] powerpc: Only use task_struct 'cpu' field on SMP Christophe Leroy
2018-10-16  5:06 ` [PATCH v8 3/9] powerpc: Prepare for moving thread_info into task_struct Christophe Leroy
2018-10-16  5:06 ` [PATCH v8 4/9] powerpc: Activate CONFIG_THREAD_INFO_IN_TASK Christophe Leroy
2018-10-16  5:06 ` [PATCH v8 5/9] powerpc: regain entire stack space Christophe Leroy
2018-10-16  5:07 ` [PATCH v8 6/9] powerpc: 'current_set' is now a table of task_struct pointers Christophe Leroy
2018-10-16  5:07 ` [PATCH v8 7/9] powerpc/32: Remove CURRENT_THREAD_INFO and rename TI_CPU Christophe Leroy
2018-10-16  5:07 ` [PATCH v8 8/9] powerpc/64: Remove CURRENT_THREAD_INFO Christophe Leroy
2018-10-16  5:07 ` Christophe Leroy [this message]

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