From: Sukadev Bhattiprolu <sukadev@xxxxxxxxxx>
Subject: [RFC][PATCH 05/14] Initialize struct pid_nr for swapper.
Statically initialize a struct pid_nr for the swapper process.
Signed-off-by: Sukadev Bhattiprolu <sukadev@xxxxxxxxxx>
---
include/linux/init_task.h | 10 ++++++++++
kernel/pid.c | 1 +
2 files changed, 11 insertions(+)
Index: 2.6.21-rc3-mm2/include/linux/init_task.h
===================================================================
--- 2.6.21-rc3-mm2.orig/include/linux/init_task.h
+++ 2.6.21-rc3-mm2/include/linux/init_task.h
@@ -96,6 +96,15 @@ extern struct group_info init_groups;
#define INIT_PREEMPT_RCU
#endif
+#define INIT_STRUCT_PID_NR { \
+ .node = { .next = NULL, .pprev = NULL }, \
+ .nr = 0, \
+ /* Don't put this struct pid in pid_hash */ \
+ .pid_chain = { .next = NULL, .pprev = NULL }, \
+ .pid_ns = &init_pid_ns, \
+ .pid = &init_struct_pid, \
+}
+
#define INIT_STRUCT_PID { \
.count = ATOMIC_INIT(1), \
.nr = 0, \
@@ -106,6 +115,7 @@ extern struct group_info init_groups;
{ .first = &init_task.pids[PIDTYPE_PGID].node }, \
{ .first = &init_task.pids[PIDTYPE_SID].node }, \
}, \
+ .pid_nrs = { .first = &init_struct_pid_nr.node }, \
.rcu = RCU_HEAD_INIT, \
}
Index: 2.6.21-rc3-mm2/kernel/pid.c
===================================================================
--- 2.6.21-rc3-mm2.orig/kernel/pid.c
+++ 2.6.21-rc3-mm2/kernel/pid.c
@@ -34,6 +34,7 @@ static struct hlist_head *pid_hash;
static int pidhash_shift;
static struct kmem_cache *pid_cachep;
static struct kmem_cache *pid_nr_cachep;
+struct pid_nr init_struct_pid_nr = INIT_STRUCT_PID_NR;
struct pid init_struct_pid = INIT_STRUCT_PID;
int pid_max = PID_MAX_DEFAULT;
--
_______________________________________________
Containers mailing list
Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx
https://lists.linux-foundation.org/mailman/listinfo/containers
