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Oleg Nesterov 73b9ebfe12 [PATCH] pidhash: don't count idle threads ... fork_idle() does unhash_process() just after copy_process(). Contrary, boot_cpu's idle thread explicitely registers itself for each pid_type with nr = 0. copy_process() already checks p->pid != 0 before process_counts++, I think we can just skip attach_pid() calls and job control inits for idle threads and kill unhash_process(). We don't need to cleanup ->proc_dentry in fork_idle() because with this patch idle threads are never hashed in kernel/pid.c:pid_hash[]. We don't need to hash pid == 0 in pidmap_init(). free_pidmap() is never called with pid == 0 arg, so it will never be reused. So it is still possible to use pid == 0 in any PIDTYPE_xxx namespace from kernel/pid.c's POV. However with this patch we don't hash pid == 0 for PIDTYPE_PID case. We still have have PIDTYPE_PGID/PIDTYPE_SID entries with pid == 0: /sbin/init and kernel threads which don't call daemonize(). Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		19 years ago
..
skas	[PATCH] uml: remove a dead file	19 years ago
tt	[PATCH] uml: TT - SYSCALL_DEBUG - fix buglet introduced in cleanup	19 years ago
Makefile	[PATCH] uml: move tty logging to os-Linux	19 years ago
asm-offsets.c	[PATCH] uml: fix missing KBUILD_BASENAME	19 years ago
config.c.in	Linux-2.6.12-rc2	20 years ago
dyn.lds.S	[PATCH] i386 / uml: add dwarf sections to static link script	20 years ago
exec_kern.c	[PATCH] uml: move tty logging to os-Linux	19 years ago
exitcode.c	[PATCH] uml: Clean up prink calls	20 years ago
gmon_syms.c	Linux-2.6.12-rc2	20 years ago
gprof_syms.c	Linux-2.6.12-rc2	20 years ago
init_task.c	[PATCH] uml: move libc code out of mem_user.c and tempfile.c	20 years ago
initrd.c	[PATCH] uml: initrd cleanup	20 years ago
irq.c	[PATCH] uml: merge irq_user.c and irq.c	19 years ago
ksyms.c	[PATCH] uml: separate libc-dependent helper code	20 years ago
mem.c	[PATCH] remove set_page_count() outside mm/	19 years ago
physmem.c	[PATCH] unify PFN_* macros	19 years ago
process_kern.c	[PATCH] uml: avoid malloc to sleep in atomic sections	19 years ago
ptrace.c	[PATCH] consolidate sys_ptrace()	20 years ago
reboot.c	[PATCH] uml: avoid "CONFIG_NR_CPUS undeclared" bogus error messages	19 years ago
resource.c	Linux-2.6.12-rc2	20 years ago
sigio_kern.c	[PATCH] uml: move SIGIO startup code to os-Linux/start_up.c	19 years ago
signal_kern.c	[PATCH] uml: use generic sys_rt_sigsuspend	19 years ago
smp.c	[PATCH] pidhash: don't count idle threads	19 years ago
syscall.c	[PATCH] uml: move libc-dependent time code	19 years ago
syscall_kern.c	[PATCH] uml: fork cleanup	20 years ago
sysrq.c	[PATCH] uml: Fix sysrq-r support for skas mode	20 years ago
time.c	[PATCH] hrtimer: convert posix timers completely	19 years ago
time_kern.c	[PATCH] uml: TT mode softint fixes	19 years ago
tlb.c	[PATCH] uml: fix condition in tlb flush	20 years ago
trap_kern.c	[PATCH] uml: merge trap_user.c and trap_kern.c	19 years ago
uaccess.c	[PATCH] uml: separate libc-dependent uaccess code	20 years ago
um_arch.c	[PATCH] Notifier chain update: API changes	19 years ago
umid.c	[PATCH] uml: umid cleanup	19 years ago
uml.lds.S	[PATCH] i386 / uml: add dwarf sections to static link script	20 years ago
vmlinux.lds.S	[PATCH] uml: include the linker script rather than symlink it	20 years ago