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SubjectRe: [PATCH 3/4] printk: implement merging printk
On Wed, 16 Jan 2008 10:00:09 +0900 Tejun Heo wrote:


> ---
> include/linux/kernel.h | 71 ++++++++++++++++
> kernel/printk.c | 215 ++++++++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 286 insertions(+), 0 deletions(-)
>
> diff --git a/include/linux/kernel.h b/include/linux/kernel.h
> index ade3ac9..f92a4a1 100644
> --- a/include/linux/kernel.h
> +++ b/include/linux/kernel.h
> @@ -175,6 +175,29 @@ extern struct pid *session_of_pgrp(struct pid *pgrp);
> extern void dump_thread(struct pt_regs *regs, struct user *dump);
>
> #ifdef CONFIG_PRINTK
> +struct mprintk {
> + char * header;
> + char * body;
> + char * cur;
> + char * prv;
> + char * end;

We aren't very consistent about this, but I think that we would prefer

char *header;

etc. there.


> + int overflowed;
> +};
> +
> +#define MPRINTK_INITIALIZER(_buf, _size) \
> + { \
> + .header = NULL, \
> + .body = _buf, \
> + .cur = _buf, \
> + .prv = NULL, \
> + .end = _buf + _size, \
> + .overflowed = 0, \
> + }
> +
> +#define DEFINE_MPRINTK(name, size) \
> + char __##name##_buf[size]; \
> + struct mprintk name = MPRINTK_INITIALIZER(__##name##_buf, size)

---
~Randy

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