kernel/printk/printk.c

734 	struct devkmsg_user *user = file->private_data;
741 	/* Ignore when user logging is disabled. */
747 		if (!___ratelimit(&user->rs, current->comm))
793 	struct devkmsg_user *user = file->private_data;
794 	char *outbuf = &user->pbufs.outbuf[0];
796 		.pbufs = &user->pbufs,
800 	ret = mutex_lock_interruptible(&user->lock);
804 	if (!printk_get_next_message(&pmsg, atomic64_read(&user->seq), true, false)) {
821 				printk_get_next_message(&pmsg, atomic64_read(&user->seq), true,
829 		atomic64_set(&user->seq, pmsg.seq);
834 	atomic64_set(&user->seq, pmsg.seq + 1);
847 	mutex_unlock(&user->lock);
861 	struct devkmsg_user *user = file->private_data;
870 		atomic64_set(&user->seq, prb_first_valid_seq(prb));
878 		atomic64_set(&user->seq, latched_seq_read_nolock(&clear_seq));
882 		atomic64_set(&user->seq, prb_next_seq(prb));
892 	struct devkmsg_user *user = file->private_data;
898 	if (prb_read_valid_info(prb, atomic64_read(&user->seq), &info, NULL)) {
900 		if (info.seq != atomic64_read(&user->seq))
911 	struct devkmsg_user *user;
925 	user = kvmalloc(sizeof(struct devkmsg_user), GFP_KERNEL);
926 	if (!user)
929 	ratelimit_default_init(&user->rs);
930 	ratelimit_set_flags(&user->rs, RATELIMIT_MSG_ON_RELEASE);
932 	mutex_init(&user->lock);
934 	atomic64_set(&user->seq, prb_first_valid_seq(prb));
936 	file->private_data = user;
942 	struct devkmsg_user *user = file->private_data;
944 	ratelimit_state_exit(&user->rs);
946 	mutex_destroy(&user->lock);
947 	kvfree(user);
1668 	 * into the user-provided buffer for this dump.
2424 	 * @c console was defined by the user on the command line.
2428 	/* At least one console defined by the user on the command line. */
2544  * above to handle user-supplied console arguments; however it can also
2545  * be used by arch-specific code either to override the user or more
2547  * the user has not supplied one.
4240 	 * into the user-provided buffer for this dump. Pass in size-1