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
prev 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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