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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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