diff options
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index f9b014e3e70..89f666491d1 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -42,9 +42,11 @@ #include <linux/profile.h> #include <linux/rmap.h> #include <linux/acct.h> +#include <linux/tsacct_kern.h> #include <linux/cn_proc.h> #include <linux/delayacct.h> #include <linux/taskstats_kern.h> +#include <linux/random.h> #include <asm/pgtable.h> #include <asm/pgalloc.h> @@ -175,10 +177,16 @@ static struct task_struct *dup_task_struct(struct task_struct *orig) tsk->thread_info = ti; setup_thread_stack(tsk, orig); +#ifdef CONFIG_CC_STACKPROTECTOR + tsk->stack_canary = get_random_int(); +#endif + /* One for us, one for whoever does the "release_task()" (usually parent) */ atomic_set(&tsk->usage,2); atomic_set(&tsk->fs_excl, 0); +#ifdef CONFIG_BLK_DEV_IO_TRACE tsk->btrace_seq = 0; +#endif tsk->splice_pipe = NULL; return tsk; } @@ -1056,7 +1064,11 @@ static struct task_struct *copy_process(unsigned long clone_flags, #endif #ifdef CONFIG_TRACE_IRQFLAGS p->irq_events = 0; +#ifdef __ARCH_WANT_INTERRUPTS_ON_CTXSW + p->hardirqs_enabled = 1; +#else p->hardirqs_enabled = 0; +#endif p->hardirq_enable_ip = 0; p->hardirq_enable_event = 0; p->hardirq_disable_ip = _THIS_IP_; @@ -1139,7 +1151,6 @@ static struct task_struct *copy_process(unsigned long clone_flags, /* Our parent execution domain becomes current domain These must match for thread signalling to apply */ - p->parent_exec_id = p->self_exec_id; /* ok, now we should be set up.. */ @@ -1162,6 +1173,9 @@ static struct task_struct *copy_process(unsigned long clone_flags, /* Need tasklist lock for parent etc handling! */ write_lock_irq(&tasklist_lock); + /* for sys_ioprio_set(IOPRIO_WHO_PGRP) */ + p->ioprio = current->ioprio; + /* * The task hasn't been attached yet, so its cpus_allowed mask will * not be changed, nor will its assigned CPU. @@ -1221,11 +1235,6 @@ static struct task_struct *copy_process(unsigned long clone_flags, } } - /* - * inherit ioprio - */ - p->ioprio = current->ioprio; - if (likely(p->pid)) { add_parent(p); if (unlikely(p->ptrace & PT_PTRACED)) |