ich777/linux_media
1
0
Fork 0
mirror of https://github.com/tbsdtv/linux_media.git synced 2025-07-23 20:51:03 +02:00
Code Issues Packages Projects Releases Wiki Activity

pstore/zone,blk: Add console frontend support

Browse Source 
Support backend for console. To enable console backend, just make
console_size be greater than 0 and a multiple of 4096.

Signed-off-by: WeiXiong Liao <liaoweixiong@allwinnertech.com>
Link: https://lore.kernel.org/lkml/20200511233229.27745-5-keescook@chromium.org/
Signed-off-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
WeiXiong Liao
2020-03-25 16:55:00 +08:00
committed by Kees Cook
parent 0dc068265a
commit cc9c4d1b55
4 changed files with 105 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
include/linux/pstore_zone.h
View File

@@ -18,11 +18,12 @@ typedef ssize_t (*pstore_zone_write_op)(const char *, size_t, loff_t);
* it must be multiple of SECTOR_SIZE(512 Bytes).
* @max_reason: Maximum kmsg dump reason to store.
* @pmsg_size: The size of pmsg zone which is the same as @kmsg_size.
* @console_size:The size of console zone which is the same as @kmsg_size.
* @read: The general read operation. Both of the function parameters
* @size and @offset are relative value to storage.
* On success, the number of bytes should be returned, others
* means error.
* @write: The same as @read.
* @write: The same as @read, but -EBUSY means try to write again later.
* @panic_write:The write operation only used for panic case. It's optional
* if you do not care panic log. The parameters and return value
* are the same as @read.
@@ -35,6 +36,7 @@ struct pstore_zone_info {
unsigned long kmsg_size;
int max_reason;
unsigned long pmsg_size;
unsigned long console_size;
pstore_zone_read_op read;
pstore_zone_write_op write;
pstore_zone_write_op panic_write;