From: tip-bot for Rui Wang <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: hpa@zytor.com, rui.y.wang@intel.com, tglx@linutronix.de,
linux-kernel@vger.kernel.org, mingo@kernel.org
Subject: [tip:x86/apic] x86/ioapic: Simplify ioapic_setup_resources()
Date: Fri, 10 Jun 2016 02:48:51 -0700 [thread overview]
Message-ID: <tip-0286d538082b854b4e1f05b29c23556fa344e145@git.kernel.org> (raw)
In-Reply-To: <1465369193-4816-4-git-send-email-rui.y.wang@intel.com>
Commit-ID: 0286d538082b854b4e1f05b29c23556fa344e145
Gitweb: http://git.kernel.org/tip/0286d538082b854b4e1f05b29c23556fa344e145
Author: Rui Wang <rui.y.wang@intel.com>
AuthorDate: Wed, 8 Jun 2016 14:59:53 +0800
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Fri, 10 Jun 2016 11:43:52 +0200
x86/ioapic: Simplify ioapic_setup_resources()
Optimize the function by removing the variable 'num'.
Signed-off-by: Rui Wang <rui.y.wang@intel.com>
Cc: tony.luck@intel.com
Cc: linux-pci@vger.kernel.org
Cc: rjw@rjwysocki.net
Cc: linux-acpi@vger.kernel.org
Cc: bhelgaas@google.com
Link: http://lkml.kernel.org/r/1465369193-4816-4-git-send-email-rui.y.wang@intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/x86/kernel/apic/io_apic.c | 18 +++++++-----------
1 file changed, 7 insertions(+), 11 deletions(-)
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 446702e..e587295 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -2567,29 +2567,25 @@ static struct resource * __init ioapic_setup_resources(void)
unsigned long n;
struct resource *res;
char *mem;
- int i, num = 0;
+ int i;
- for_each_ioapic(i)
- num++;
- if (num == 0)
+ if (nr_ioapics == 0)
return NULL;
n = IOAPIC_RESOURCE_NAME_SIZE + sizeof(struct resource);
- n *= num;
+ n *= nr_ioapics;
mem = alloc_bootmem(n);
res = (void *)mem;
- mem += sizeof(struct resource) * num;
+ mem += sizeof(struct resource) * nr_ioapics;
- num = 0;
for_each_ioapic(i) {
- res[num].name = mem;
- res[num].flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+ res[i].name = mem;
+ res[i].flags = IORESOURCE_MEM | IORESOURCE_BUSY;
snprintf(mem, IOAPIC_RESOURCE_NAME_SIZE, "IOAPIC %u", i);
mem += IOAPIC_RESOURCE_NAME_SIZE;
- ioapics[i].iomem_res = &res[num];
- num++;
+ ioapics[i].iomem_res = &res[i];
}
ioapic_resources = res;
next prev parent reply other threads:[~2016-06-10 9:49 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-08 6:59 [PATCH V2 0/3] ioapic hot-removal bugs Rui Wang
2016-06-08 6:59 ` [PATCH V2 1/3] x86/ioapic: Support hot-removal of IOAPICs present during boot Rui Wang
2016-06-08 8:05 ` kbuild test robot
2016-06-08 9:32 ` [PATCH V3 " Rui Wang
2016-06-10 12:57 ` Thomas Gleixner
2016-06-10 13:56 ` Rafael J. Wysocki
2016-06-10 16:43 ` Bjorn Helgaas
2016-06-12 6:06 ` Rui Wang
2016-06-16 17:09 ` Bjorn Helgaas
2016-06-22 7:13 ` Rui Wang
2016-06-22 14:53 ` Bjorn Helgaas
2016-06-24 15:18 ` Rui Wang
2016-06-22 7:40 ` [PATCH V4 " Rui Wang
2016-06-22 15:14 ` Bjorn Helgaas
2016-06-23 5:11 `
2016-06-23 17:34 ` Bjorn Helgaas
2016-06-24 15:30 ` Rui Wang
2016-06-26 3:44 ` [PATCH V5 " Rui Wang
2016-08-08 20:22 ` Bjorn Helgaas
2016-08-09 3:23 ` Rui Wang
2016-08-09 12:09 ` Rafael J. Wysocki
2016-06-08 6:59 ` [PATCH V2 2/3] x86/ioapic: Fix wrong pointers in ioapic_setup_resources() Rui Wang
2016-06-10 9:45 ` [tip:x86/urgent] " tip-bot for Rui Wang
2016-06-10 12:01 ` [tip:x86/apic] x86/ioapic: Fix incorrect " tip-bot for Rui Wang
2016-06-10 12:48 ` [tip:x86/urgent] " tip-bot for Rui Wang
2016-06-08 6:59 ` [PATCH V2 3/3] x86/ioapic: Simplify ioapic_setup_resources() Rui Wang
2016-06-10 9:48 ` tip-bot for Rui Wang [this message]
2016-06-10 12:54 ` [tip:x86/apic] " tip-bot for Rui Wang
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