diff options
| author | Ingo Molnar <mingo@elte.hu> | 2002-11-20 20:25:03 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2002-11-20 20:25:03 -0800 |
| commit | dbc4fc9c16d84f2c6808d1dc436358db0ea802b4 (patch) | |
| tree | 3b74fdf912975f8381459a69a19325d7789dd0c5 /include/linux | |
| parent | 7d7f493a6545cd171e4601b47d5aabccf89c66e2 (diff) | |
[PATCH] threading enhancements, tid-2.5.48-C0
Support more flexible child pid set/clear operations for NPTL.
there's one more improvement in the interface: set the parent-TID prior
doing the copy_mm() - this helps cfork() to pass the TID to the child as
well.
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/sched.h | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index afc7c0462ccd..7946bd8cb0ad 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -46,10 +46,11 @@ struct exec_domain; #define CLONE_NEWNS 0x00020000 /* New namespace group? */ #define CLONE_SYSVSEM 0x00040000 /* share system V SEM_UNDO semantics */ #define CLONE_SETTLS 0x00080000 /* create a new TLS for the child */ -#define CLONE_SETTID 0x00100000 /* write the TID back to userspace */ -#define CLONE_CLEARTID 0x00200000 /* clear the userspace TID */ -#define CLONE_DETACHED 0x00400000 /* parent wants no child-exit signal */ -#define CLONE_UNTRACED 0x00800000 /* set if the tracing process can't force CLONE_PTRACE on this clone */ +#define CLONE_PARENT_SETTID 0x00100000 /* set the TID in the parent */ +#define CLONE_CHILD_CLEARTID 0x00200000 /* clear the TID in the child */ +#define CLONE_DETACHED 0x00400000 /* parent wants no child-exit signal */ +#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 */ /* * List of flags we want to share for kernel threads, @@ -332,7 +333,8 @@ struct task_struct { wait_queue_head_t wait_chldexit; /* for wait4() */ struct completion *vfork_done; /* for vfork() */ - int *user_tid; /* for CLONE_CLEARTID */ + int *set_child_tid; /* CLONE_CHILD_SETTID */ + int *clear_child_tid; /* CLONE_CHILD_CLEARTID */ unsigned long rt_priority; unsigned long it_real_value, it_prof_value, it_virt_value; @@ -585,7 +587,7 @@ extern void daemonize(void); extern task_t *child_reaper; extern int do_execve(char *, char **, char **, struct pt_regs *); -extern struct task_struct *do_fork(unsigned long, unsigned long, struct pt_regs *, unsigned long, int *); +extern struct task_struct *do_fork(unsigned long, unsigned long, struct pt_regs *, unsigned long, int *, int *); #ifdef CONFIG_SMP extern void wait_task_inactive(task_t * p); |