Changeset c4cfe4c in mainline for kernel/generic/include/console/console.h

Timestamp:

2025-04-17T16:01:16Z (5 days ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Branches:

master

Children:

888c06e

Parents:

1db4e2ae (diff), 250a435 (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

git-author:

Jiří Zárevúcky <zarevucky.jiri@…> (2025-04-17 15:51:11)

git-committer:

Jiří Zárevúcky <zarevucky.jiri@…> (2025-04-17 16:01:16)

Message:

Convert kernel console writing to byte arrays

More buffer per buffer (the original char32_t buffer takes up four
times as much space for the same amount of backlog, which is wasteful).
It is also faster, possibly thanks to bigger chunks being processed in bulk.
Gonna try to figure out if the locking can be improved further.

Also changed to use a syscall for reading KIO buffer from uspace,
to allow better synchronization.

File:

• kernel/generic/include/console/console.h (modified) (3 diffs)

kernel/generic/include/console/console.h

@@ -36 +36 @@
 #define KERN_CONSOLE_H_
 
-#include <typedefs.h>
-#include <print.h>
 #include <console/chardev.h>
 #include <synch/spinlock.h>
@@ -66 +64 @@
 extern void kio_update(void *);
 extern void kio_flush(void);
-extern void kio_push_char(const char32_t);
-SPINLOCK_EXTERN(kio_lock);
+extern void kio_push_bytes(const char *, size_t);
+extern irq_spinlock_t kio_lock;
 
+extern sysarg_t sys_kio_read(uspace_addr_t buf, size_t size, size_t at);
 extern sys_errno_t sys_kio(int cmd, uspace_addr_t buf, size_t size);
 
@@ -79 +78 @@
 extern void console_unlock(void);
 
+extern void putstr(const char *s, size_t n);
+
 #endif /* KERN_CONSOLE_H_ */