log_make_free_space

Name:log_make_free_space

Proto:static int log_make_free_space(unsigned int msg_size)

Type:int

Parameter:

Type	Parameter	Name
unsigned int	msg_size

546

When dex and sequence number of the first record stored in the buffer < dex and sequence number of the next record to store in the buffer && Not Check whether there is enough free space for the given message.* The same values of first_idx and next_idx mean that the buffer* is either empty or full.* If the buffer is empty, we must respect the position of the indexes. cycle

549

log_first_idx = get next record; idx must point to valid msg

550

dex and sequence number of the first record stored in the buffer ++

553

If he next printk record to read after the last 'clear' command < dex and sequence number of the first record stored in the buffer Then

554

he next printk record to read after the last 'clear' command = dex and sequence number of the first record stored in the buffer

555

clear_idx = log_first_idx

559

If Check whether there is enough free space for the given message.* The same values of first_idx and next_idx mean that the buffer* is either empty or full.* If the buffer is empty, we must respect the position of the indexes. Then Return 0

562

Return -ENOMEM

**Caller**
Name	Describe
log_store	sert record into the buffer, discard old ones, update heads

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