From: Coywolf Qi Hunt <coywolf@greatcn.org>
To: Jeff Dike <jdike@addtoit.com>
Cc: akpm@osdl.org, user-mode-linux-devel@lists.sourceforge.net,
linux-kernel@vger.kernel.org
Subject: [uml-devel] [PATCH] more cleanup on smp.c
Date: Thu, 29 Jul 2004 19:42:07 +0800 [thread overview]
Message-ID: <4108E28F.9030007@greatcn.org> (raw)
In-Reply-To: <200407281714.i6SHEkeh002948@ccure.user-mode-linux.org>
Jeff Dike wrote:
>coywolf@greatcn.org said:
>
>
>>This patch removes a group of unused bh functions in um. This 2.2
>>legacy code should be cleaned up.
>>
>>
>
>Applied to my tree, thanks.
>
This includes the previous remove_old_bh patch, plus 8 more lines
deletions in the same file.
smp.c | 43 -------------------------------------------
1 files changed, 43 deletions(-)
diff -Nrup linux-2.6.8-rc2/arch/um/kernel/smp.c linux-2.6.8-rc2-cy/arch/um/kernel/smp.c
--- linux-2.6.8-rc2/arch/um/kernel/smp.c 2004-06-29 23:03:33.000000000 -0500
+++ linux-2.6.8-rc2-cy/arch/um/kernel/smp.c 2004-07-29 06:27:39.069874156 -0500
@@ -33,14 +33,6 @@ EXPORT_SYMBOL(cpu_online_map);
*/
struct cpuinfo_um cpu_data[NR_CPUS];
-spinlock_t um_bh_lock = SPIN_LOCK_UNLOCKED;
-
-atomic_t global_bh_count;
-
-/* Not used by UML */
-unsigned char global_irq_holder = NO_PROC_ID;
-unsigned volatile long global_irq_lock;
-
/* Set when the idlers are all forked */
int smp_threads_ready = 0;
@@ -59,41 +51,6 @@ void smp_send_reschedule(int cpu)
num_reschedules_sent++;
}
-static void show(char * str)
-{
- int cpu = smp_processor_id();
-
- printk(KERN_INFO "\n%s, CPU %d:\n", str, cpu);
-}
-
-#define MAXCOUNT 100000000
-
-static inline void wait_on_bh(void)
-{
- int count = MAXCOUNT;
- do {
- if (!--count) {
- show("wait_on_bh");
- count = ~0;
- }
- /* nothing .. wait for the other bh's to go away */
- } while (atomic_read(&global_bh_count) != 0);
-}
-
-/*
- * This is called when we want to synchronize with
- * bottom half handlers. We need to wait until
- * no other CPU is executing any bottom half handler.
- *
- * Don't wait if we're already running in an interrupt
- * context or are inside a bh handler.
- */
-void synchronize_bh(void)
-{
- if (atomic_read(&global_bh_count) && !in_interrupt())
- wait_on_bh();
-}
-
void smp_send_stop(void)
{
int i;
--
Coywolf Qi Hunt
Homepage http://greatcn.org/~coywolf/
Admin of http://GreatCN.org and http://LoveCN.org
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WARNING: multiple messages have this Message-ID (diff)
From: Coywolf Qi Hunt <coywolf@greatcn.org>
To: Jeff Dike <jdike@addtoit.com>
Cc: akpm@osdl.org, user-mode-linux-devel@lists.sourceforge.net,
linux-kernel@vger.kernel.org
Subject: [uml-devel] [PATCH] more cleanup on smp.c
Date: Thu, 29 Jul 2004 19:42:07 +0800 [thread overview]
Message-ID: <4108E28F.9030007@greatcn.org> (raw)
In-Reply-To: <200407281714.i6SHEkeh002948@ccure.user-mode-linux.org>
Jeff Dike wrote:
>coywolf@greatcn.org said:
>
>
>>This patch removes a group of unused bh functions in um. This 2.2
>>legacy code should be cleaned up.
>>
>>
>
>Applied to my tree, thanks.
>
This includes the previous remove_old_bh patch, plus 8 more lines
deletions in the same file.
smp.c | 43 -------------------------------------------
1 files changed, 43 deletions(-)
diff -Nrup linux-2.6.8-rc2/arch/um/kernel/smp.c linux-2.6.8-rc2-cy/arch/um/kernel/smp.c
--- linux-2.6.8-rc2/arch/um/kernel/smp.c 2004-06-29 23:03:33.000000000 -0500
+++ linux-2.6.8-rc2-cy/arch/um/kernel/smp.c 2004-07-29 06:27:39.069874156 -0500
@@ -33,14 +33,6 @@ EXPORT_SYMBOL(cpu_online_map);
*/
struct cpuinfo_um cpu_data[NR_CPUS];
-spinlock_t um_bh_lock = SPIN_LOCK_UNLOCKED;
-
-atomic_t global_bh_count;
-
-/* Not used by UML */
-unsigned char global_irq_holder = NO_PROC_ID;
-unsigned volatile long global_irq_lock;
-
/* Set when the idlers are all forked */
int smp_threads_ready = 0;
@@ -59,41 +51,6 @@ void smp_send_reschedule(int cpu)
num_reschedules_sent++;
}
-static void show(char * str)
-{
- int cpu = smp_processor_id();
-
- printk(KERN_INFO "\n%s, CPU %d:\n", str, cpu);
-}
-
-#define MAXCOUNT 100000000
-
-static inline void wait_on_bh(void)
-{
- int count = MAXCOUNT;
- do {
- if (!--count) {
- show("wait_on_bh");
- count = ~0;
- }
- /* nothing .. wait for the other bh's to go away */
- } while (atomic_read(&global_bh_count) != 0);
-}
-
-/*
- * This is called when we want to synchronize with
- * bottom half handlers. We need to wait until
- * no other CPU is executing any bottom half handler.
- *
- * Don't wait if we're already running in an interrupt
- * context or are inside a bh handler.
- */
-void synchronize_bh(void)
-{
- if (atomic_read(&global_bh_count) && !in_interrupt())
- wait_on_bh();
-}
-
void smp_send_stop(void)
{
int i;
--
Coywolf Qi Hunt
Homepage http://greatcn.org/~coywolf/
Admin of http://GreatCN.org and http://LoveCN.org
next prev parent reply other threads:[~2004-07-29 11:43 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-28 10:29 [uml-devel] [PATCH] [UM] remove a group of unused bh functions Coywolf Qi Hunt
2004-07-28 10:29 ` Coywolf Qi Hunt
2004-07-28 17:14 ` [uml-devel] " Jeff Dike
2004-07-28 17:14 ` Jeff Dike
2004-07-29 11:42 ` Coywolf Qi Hunt [this message]
2004-07-29 11:42 ` [uml-devel] [PATCH] more cleanup on smp.c Coywolf Qi Hunt
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