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Date: Fri, 24 Dec 2010 15:00:51 +0100 From: Tejun Heo <tj@...nel.org> To: oleg@...hat.com, roland@...hat.com, jan.kratochvil@...hat.com, linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org, akpm@...ux-foundation.org Cc: Tejun Heo <tj@...nel.org> Subject: [PATCH 1/7] clone: kill CLONE_STOPPED CLONE_STOPPED has been deprecated and generating warning messages since 2.6.25 with recycling scheduled for 2.6.26. Remove it to prepare for signal stop / ptrace cleanup. For more details, please refer to the commit bdff746a (clone: prepare to recycle CLONE_STOPPED). Signed-off-by: Tejun Heo <tj@...nel.org> Cc: Andrew Morton <akpm@...ux-foundation.org> Cc: Oleg Nesterov <oleg@...hat.com> Cc: Roland McGrath <roland@...hat.com> --- include/linux/sched.h | 1 - kernel/fork.c | 28 +--------------------------- 2 files changed, 1 insertions(+), 28 deletions(-) diff --git a/include/linux/sched.h b/include/linux/sched.h index 2238745..653644d 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -21,7 +21,6 @@ #define CLONE_DETACHED 0x00400000 /* Unused, ignored */ #define CLONE_UNTRACED 0x00800000 /* set if the tracing process can't force CLONE_PTRACE on this clone */ #define CLONE_CHILD_SETTID 0x01000000 /* set the TID in the child */ -#define CLONE_STOPPED 0x02000000 /* Start in stopped state */ #define CLONE_NEWUTS 0x04000000 /* New utsname group? */ #define CLONE_NEWIPC 0x08000000 /* New ipcs */ #define CLONE_NEWUSER 0x10000000 /* New user namespace */ diff --git a/kernel/fork.c b/kernel/fork.c index 5447dc7..0d38381 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1408,23 +1408,6 @@ long do_fork(unsigned long clone_flags, } /* - * We hope to recycle these flags after 2.6.26 - */ - if (unlikely(clone_flags & CLONE_STOPPED)) { - static int __read_mostly count = 100; - - if (count > 0 && printk_ratelimit()) { - char comm[TASK_COMM_LEN]; - - count--; - printk(KERN_INFO "fork(): process `%s' used deprecated " - "clone flags 0x%lx\n", - get_task_comm(comm, current), - clone_flags & CLONE_STOPPED); - } - } - - /* * When called from kernel_thread, don't do user tracing stuff. */ if (likely(user_mode(regs))) @@ -1462,16 +1445,7 @@ long do_fork(unsigned long clone_flags, */ p->flags &= ~PF_STARTING; - if (unlikely(clone_flags & CLONE_STOPPED)) { - /* - * We'll start up with an immediate SIGSTOP. - */ - sigaddset(&p->pending.signal, SIGSTOP); - set_tsk_thread_flag(p, TIF_SIGPENDING); - __set_task_state(p, TASK_STOPPED); - } else { - wake_up_new_task(p, clone_flags); - } + wake_up_new_task(p, clone_flags); tracehook_report_clone_complete(trace, regs, clone_flags, nr, p); -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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