From: Christoph Lameter <cl@linux.com>
To: akpm@linux-foundation.org
Cc: Pekka Enberg <penberg@cs.helsinki.fi>,
Rusty Russell <rusty@rustcorp.com.au>,
linux-kernel@vger.kernel.org,
Eric Dumazet <eric.dumazet@gmail.com>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Tejun Heo <tj@kernel.org>,
linux-mm@kvack.org
Subject: [thisops uV3 14/18] lguest: Use this_cpu_ops
Date: Tue, 30 Nov 2010 13:07:21 -0600 [thread overview]
Message-ID: <20101130190849.422541374@linux.com> (raw)
In-Reply-To: 20101130190707.457099608@linux.com
[-- Attachment #1: this_cpu_lguest --]
[-- Type: text/plain, Size: 2587 bytes --]
Use this_cpu_ops in a couple of places in lguest.
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Christoph Lameter <cl@linux.com>
---
arch/x86/lguest/boot.c | 2 +-
drivers/lguest/page_tables.c | 2 +-
drivers/lguest/x86/core.c | 4 ++--
3 files changed, 4 insertions(+), 4 deletions(-)
Index: linux-2.6/arch/x86/lguest/boot.c
===================================================================
--- linux-2.6.orig/arch/x86/lguest/boot.c 2010-11-30 12:22:34.000000000 -0600
+++ linux-2.6/arch/x86/lguest/boot.c 2010-11-30 12:24:08.000000000 -0600
@@ -821,7 +821,7 @@ static void __init lguest_init_IRQ(void)
for (i = FIRST_EXTERNAL_VECTOR; i < NR_VECTORS; i++) {
/* Some systems map "vectors" to interrupts weirdly. Not us! */
- __get_cpu_var(vector_irq)[i] = i - FIRST_EXTERNAL_VECTOR;
+ __this_cpu_write(vector_irq[i]) = i - FIRST_EXTERNAL_VECTOR;
if (i != SYSCALL_VECTOR)
set_intr_gate(i, interrupt[i - FIRST_EXTERNAL_VECTOR]);
}
Index: linux-2.6/drivers/lguest/page_tables.c
===================================================================
--- linux-2.6.orig/drivers/lguest/page_tables.c 2010-11-30 12:22:34.000000000 -0600
+++ linux-2.6/drivers/lguest/page_tables.c 2010-11-30 12:24:08.000000000 -0600
@@ -1137,7 +1137,7 @@ void free_guest_pagetable(struct lguest
*/
void map_switcher_in_guest(struct lg_cpu *cpu, struct lguest_pages *pages)
{
- pte_t *switcher_pte_page = __get_cpu_var(switcher_pte_pages);
+ pte_t *switcher_pte_page = __this_cpu_read(switcher_pte_pages);
pte_t regs_pte;
#ifdef CONFIG_X86_PAE
Index: linux-2.6/drivers/lguest/x86/core.c
===================================================================
--- linux-2.6.orig/drivers/lguest/x86/core.c 2010-11-30 12:22:34.000000000 -0600
+++ linux-2.6/drivers/lguest/x86/core.c 2010-11-30 12:24:08.000000000 -0600
@@ -90,8 +90,8 @@ static void copy_in_guest_info(struct lg
* meanwhile). If that's not the case, we pretend everything in the
* Guest has changed.
*/
- if (__get_cpu_var(lg_last_cpu) != cpu || cpu->last_pages != pages) {
- __get_cpu_var(lg_last_cpu) = cpu;
+ if (__this_cpu_read(lg_last_cpu) != cpu || cpu->last_pages != pages) {
+ __this_cpu_read(lg_last_cpu) = cpu;
cpu->last_pages = pages;
cpu->changed = CHANGED_ALL;
}
--
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next prev parent reply other threads:[~2010-11-30 19:09 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-30 19:07 [thisops uV3 00/18] Upgrade of this_cpu_ops V3 Christoph Lameter
2010-11-30 19:07 ` [thisops uV3 01/18] percpucounter: Optimize __percpu_counter_add a bit through the use of this_cpu() options Christoph Lameter
2010-11-30 19:07 ` [thisops uV3 02/18] vmstat: Optimize zone counter modifications through the use of this cpu operations Christoph Lameter
2010-11-30 19:07 ` [thisops uV3 03/18] percpu: Generic support for this_cpu_add,sub,dec,inc_return Christoph Lameter
2010-11-30 19:07 ` [thisops uV3 04/18] x86: Support " Christoph Lameter
2010-11-30 19:07 ` [thisops uV3 05/18] x86: Use this_cpu_inc_return for nmi counter Christoph Lameter
2010-11-30 19:07 ` [thisops uV3 06/18] vmstat: Use this_cpu_inc_return for vm statistics Christoph Lameter
2010-11-30 19:07 ` [thisops uV3 07/18] highmem: Use this_cpu_xx_return() operations Christoph Lameter
2010-11-30 19:13 ` Eric Dumazet
2010-11-30 19:19 ` Peter Zijlstra
2010-11-30 19:26 ` Christoph Lameter
2010-11-30 19:29 ` Eric Dumazet
2010-11-30 19:38 ` Peter Zijlstra
2010-11-30 19:53 ` Christoph Lameter
2010-11-30 19:07 ` [thisops uV3 08/18] Taskstats: Use this_cpu_ops Christoph Lameter
2010-12-01 18:06 ` Michael Holzheu
2010-12-01 18:13 ` Christoph Lameter
2010-12-06 14:32 ` Balbir Singh
2010-12-07 14:39 ` Christoph Lameter
2010-11-30 19:07 ` [thisops uV3 09/18] fs: Use this_cpu_xx operations in buffer.c Christoph Lameter
2010-11-30 19:07 ` [thisops uV3 10/18] x86: Use this_cpu_ops to optimize code Christoph Lameter
2010-11-30 19:07 ` [thisops uV3 11/18] x86: Use this_cpu_ops for current_cpu_data accesses Christoph Lameter
2010-11-30 19:07 ` [thisops uV3 12/18] Core: Replace __get_cpu_var with __this_cpu_read if not used for an address Christoph Lameter
2010-11-30 19:07 ` [thisops uV3 13/18] drivers: " Christoph Lameter
2010-11-30 19:07 ` Christoph Lameter [this message]
2010-12-06 7:46 ` [thisops uV3 14/18] lguest: Use this_cpu_ops Rusty Russell
2010-12-06 15:54 ` Christoph Lameter
2010-12-06 16:27 ` Christoph Lameter
2010-11-30 19:07 ` [thisops uV3 15/18] Xen: " Christoph Lameter
2010-11-30 20:53 ` Jeremy Fitzhardinge
2010-11-30 21:03 ` Christoph Lameter
2010-11-30 19:07 ` [thisops uV3 16/18] kprobes: " Christoph Lameter
2010-11-30 19:07 ` [thisops uV3 17/18] Connector: Use this_cpu operations Christoph Lameter
2010-11-30 19:07 ` [thisops uV3 18/18] Fakekey: Simplify speakup_fake_key_pressed through this_cpu_ops Christoph Lameter
2010-11-30 20:05 ` [extra] timers: Use this_cpu_read Christoph Lameter
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