The patch titled
kthread: convert stop_machine into a kthread
has been removed from the -mm tree. Its filename is
kthread-convert-stop_machine-into-a-kthread.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: kthread: convert stop_machine into a kthread
From: "Serge E. Hallyn" <serue@xxxxxxxxxx>
- Update stop_machine.c to spawn stop_machine as kthreads rather than the
deprecated kernel_threads.
- Update stop_machine to use the more efficient kthread_bind() before
running task in place of set_cpus_allowed() after.
[akpm@xxxxxxxx: remove now-wrong set_cpus_allowed()]
Signed-off-by: Serge E. Hallyn <serue@xxxxxxxxxx>
Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
kernel/stop_machine.c | 17 +++++++++++------
1 file changed, 11 insertions(+), 6 deletions(-)
diff -puN kernel/stop_machine.c~kthread-convert-stop_machine-into-a-kthread kernel/stop_machine.c
--- a/kernel/stop_machine.c~kthread-convert-stop_machine-into-a-kthread
+++ a/kernel/stop_machine.c
@@ -4,6 +4,7 @@
#include <linux/cpu.h>
#include <linux/err.h>
#include <linux/syscalls.h>
+#include <linux/kthread.h>
#include <asm/atomic.h>
#include <asm/semaphore.h>
#include <asm/uaccess.h>
@@ -25,13 +26,11 @@ static unsigned int stopmachine_num_thre
static atomic_t stopmachine_thread_ack;
static DECLARE_MUTEX(stopmachine_mutex);
-static int stopmachine(void *cpu)
+static int stopmachine(void *unused)
{
int irqs_disabled = 0;
int prepared = 0;
- set_cpus_allowed(current, cpumask_of_cpu((int)(long)cpu));
-
/* Ack: we are alive */
smp_mb(); /* Theoretically the ack = 0 might not be on this CPU yet. */
atomic_inc(&stopmachine_thread_ack);
@@ -85,7 +84,8 @@ static void stopmachine_set_state(enum s
static int stop_machine(void)
{
- int i, ret = 0;
+ int ret = 0;
+ unsigned int i;
struct sched_param param = { .sched_priority = MAX_RT_PRIO-1 };
/* One high-prio thread per cpu. We'll do this one. */
@@ -96,11 +96,16 @@ static int stop_machine(void)
stopmachine_state = STOPMACHINE_WAIT;
for_each_online_cpu(i) {
+ struct task_struct *tsk;
if (i == raw_smp_processor_id())
continue;
- ret = kernel_thread(stopmachine, (void *)(long)i,CLONE_KERNEL);
- if (ret < 0)
+ tsk = kthread_create(stopmachine, NULL, "stopmachine");
+ if (IS_ERR(tsk)) {
+ ret = PTR_ERR(tsk);
break;
+ }
+ kthread_bind(tsk, i);
+ wake_up_process(tsk);
stopmachine_num_threads++;
}
_
Patches currently in -mm which might be from serue@xxxxxxxxxx are
origin.patch
git-s390.patch
s390-move-var-declarations-behind-ifdef.patch
proc-sysctl-add-_proc_do_string-helper.patch
namespaces-add-nsproxy.patch
namespaces-add-nsproxy-dont-include-compileh.patch
namespaces-incorporate-fs-namespace-into-nsproxy.patch
namespaces-utsname-introduce-temporary-helpers.patch
namespaces-utsname-switch-to-using-uts-namespaces.patch
namespaces-utsname-switch-to-using-uts-namespaces-alpha-fix.patch
namespaces-utsname-switch-to-using-uts-namespaces-cleanup.patch
namespaces-utsname-use-init_utsname-when-appropriate.patch
namespaces-utsname-use-init_utsname-when-appropriate-cifs-update.patch
namespaces-utsname-implement-utsname-namespaces.patch
namespaces-utsname-implement-utsname-namespaces-export.patch
namespaces-utsname-implement-utsname-namespaces-dont-include-compileh.patch
namespaces-utsname-implement-utsname-namespaces-remove-unused-exit_utsname.patch
namespaces-utsname-sysctl-hack.patch
namespaces-utsname-sysctl-hack-cleanup.patch
namespaces-utsname-sysctl-hack-cleanup-2.patch
namespaces-utsname-sysctl-hack-cleanup-2-fix.patch
namespaces-utsname-remove-system_utsname.patch
namespaces-utsname-implement-clone_newuts-flag.patch
namespaces-utsname-implement-clone_newuts-flag-tidy.patch
uts-copy-nsproxy-only-when-needed.patch
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
