if (task) {
task_lock(task);
- ns = task->nsproxy->mnt_ns;
- if (ns)
- get_mnt_ns(ns);
+ if (task->nsproxy) {
+ ns = task->nsproxy->mnt_ns;
+ if (ns)
+ get_mnt_ns(ns);
+ }
task_unlock(task);
put_task_struct(task);
}
proc_base_instantiate, task, p);
}
+#ifdef CONFIG_TASK_IO_ACCOUNTING
+static int proc_pid_io_accounting(struct task_struct *task, char *buffer)
+{
+ return sprintf(buffer,
+ "rchar: %llu\n"
+ "wchar: %llu\n"
+ "syscr: %llu\n"
+ "syscw: %llu\n"
+ "read_bytes: %llu\n"
+ "write_bytes: %llu\n"
+ "cancelled_write_bytes: %llu\n",
+ (unsigned long long)task->rchar,
+ (unsigned long long)task->wchar,
+ (unsigned long long)task->syscr,
+ (unsigned long long)task->syscw,
+ (unsigned long long)task->ioac.read_bytes,
+ (unsigned long long)task->ioac.write_bytes,
+ (unsigned long long)task->ioac.cancelled_write_bytes);
+}
+#endif
+
/*
* Thread groups
*/
#ifdef CONFIG_FAULT_INJECTION
REG("make-it-fail", S_IRUGO|S_IWUSR, fault_inject),
#endif
+#ifdef CONFIG_TASK_IO_ACCOUNTING
+ INF("io", S_IRUGO, pid_io_accounting),
+#endif
};
static int proc_tgid_base_readdir(struct file * filp,