On Tue 2020-07-07 17:05:32, John Ogness wrote: > Replace the existing ringbuffer usage and implementation with > lockless ringbuffer usage. Even though the new ringbuffer does not > require locking, all existing locking is left in place. Therefore, > this change is purely replacing the underlining ringbuffer. > > Changes that exist due to the ringbuffer replacement: > > - The VMCOREINFO has been updated for the new structures. > > - Dictionary data is now stored in a separate data buffer from the > human-readable messages. The dictionary data buffer is set to the > same size as the message buffer. Therefore, the total required > memory for both dictionary and message data is > 2 * (2 ^ CONFIG_LOG_BUF_SHIFT) for the initial static buffers and > 2 * log_buf_len (the kernel parameter) for the dynamic buffers. > > - Record meta-data is now stored in a separate array of descriptors. > This is an additional 72 * (2 ^ (CONFIG_LOG_BUF_SHIFT - 5)) bytes > for the static array and 72 * (log_buf_len >> 5) bytes for the > dynamic array. > > Signed-off-by: John Ogness <john.ogness@xxxxxxxxxxxxx> Reviewed-by: Petr Mladek <pmladek@xxxxxxxx> Best Regards, Petr _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
