diff options
Diffstat (limited to 'kernel/cpuset.c')
| -rw-r--r-- | kernel/cpuset.c | 45 |
1 files changed, 32 insertions, 13 deletions
diff --git a/kernel/cpuset.c b/kernel/cpuset.c index ab81fdd4572b..c232dc077438 100644 --- a/kernel/cpuset.c +++ b/kernel/cpuset.c @@ -18,7 +18,6 @@ * distribution for more details. */ -#include <linux/config.h> #include <linux/cpu.h> #include <linux/cpumask.h> #include <linux/cpuset.h> @@ -41,6 +40,7 @@ #include <linux/rcupdate.h> #include <linux/sched.h> #include <linux/seq_file.h> +#include <linux/security.h> #include <linux/slab.h> #include <linux/smp_lock.h> #include <linux/spinlock.h> @@ -392,11 +392,11 @@ static int cpuset_fill_super(struct super_block *sb, void *unused_data, return 0; } -static struct super_block *cpuset_get_sb(struct file_system_type *fs_type, - int flags, const char *unused_dev_name, - void *data) +static int cpuset_get_sb(struct file_system_type *fs_type, + int flags, const char *unused_dev_name, + void *data, struct vfsmount *mnt) { - return get_sb_single(fs_type, flags, data, cpuset_fill_super); + return get_sb_single(fs_type, flags, data, cpuset_fill_super, mnt); } static struct file_system_type cpuset_fs_type = { @@ -1063,7 +1063,7 @@ static int update_flag(cpuset_flagbits_t bit, struct cpuset *cs, char *buf) } /* - * Frequency meter - How fast is some event occuring? + * Frequency meter - How fast is some event occurring? * * These routines manage a digitally filtered, constant time based, * event frequency meter. There are four routines: @@ -1177,6 +1177,7 @@ static int attach_task(struct cpuset *cs, char *pidbuf, char **ppathbuf) cpumask_t cpus; nodemask_t from, to; struct mm_struct *mm; + int retval; if (sscanf(pidbuf, "%d", &pid) != 1) return -EIO; @@ -1205,6 +1206,12 @@ static int attach_task(struct cpuset *cs, char *pidbuf, char **ppathbuf) get_task_struct(tsk); } + retval = security_task_setscheduler(tsk, 0, NULL); + if (retval) { + put_task_struct(tsk); + return retval; + } + mutex_lock(&callback_mutex); task_lock(tsk); @@ -2434,31 +2441,43 @@ void __cpuset_memory_pressure_bump(void) */ static int proc_cpuset_show(struct seq_file *m, void *v) { + struct pid *pid; struct task_struct *tsk; char *buf; - int retval = 0; + int retval; + retval = -ENOMEM; buf = kmalloc(PAGE_SIZE, GFP_KERNEL); if (!buf) - return -ENOMEM; + goto out; - tsk = m->private; + retval = -ESRCH; + pid = m->private; + tsk = get_pid_task(pid, PIDTYPE_PID); + if (!tsk) + goto out_free; + + retval = -EINVAL; mutex_lock(&manage_mutex); + retval = cpuset_path(tsk->cpuset, buf, PAGE_SIZE); if (retval < 0) - goto out; + goto out_unlock; seq_puts(m, buf); seq_putc(m, '\n'); -out: +out_unlock: mutex_unlock(&manage_mutex); + put_task_struct(tsk); +out_free: kfree(buf); +out: return retval; } static int cpuset_open(struct inode *inode, struct file *file) { - struct task_struct *tsk = PROC_I(inode)->task; - return single_open(file, proc_cpuset_show, tsk); + struct pid *pid = PROC_I(inode)->pid; + return single_open(file, proc_cpuset_show, pid); } struct file_operations proc_cpuset_operations = { |