From caafa4324335aeb11bc233d5f87aca8cce30beba Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Wed, 30 Apr 2008 00:54:31 -0700 Subject: pidns: make pid->level and pid_ns->level unsigned These values represent the nesting level of a namespace and pids living in it, and it's always non-negative. Turning this from int to unsigned int saves some space in pid.c (11 bytes on x86 and 64 on ia64) by letting the compiler optimize the pid_nr_ns a bit. E.g. on ia64 this removes the sign extension calls, which compiler adds to optimize access to pid->nubers[ns->level]. Signed-off-by: Pavel Emelyanov Cc: "Eric W. Biederman" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/pid_namespace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'kernel') diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c index 5ca37fa50beb..98702b4b8851 100644 --- a/kernel/pid_namespace.c +++ b/kernel/pid_namespace.c @@ -66,7 +66,7 @@ err_alloc: return NULL; } -static struct pid_namespace *create_pid_namespace(int level) +static struct pid_namespace *create_pid_namespace(unsigned int level) { struct pid_namespace *ns; int i; -- cgit v1.2.3-59-g8ed1b