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printk,kdb: capture printk() when in kdb shell

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Certain calls from the kdb shell will call out to printk(), and any of
these calls should get vectored back to the kdb_printf() so that the
kdb pager and processing can be used, as well as to properly channel
I/O to the polled I/O devices.

CC: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Jason Wessel 2010-05-20 21:04:27 -05:00
parent efe2f29e32
commit d37d39ae3b
5 changed files with 38 additions and 4 deletions
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3
include/linux/kdb.h
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@ -78,6 +78,9 @@ typedef enum {
KDB_REASON_SSTEP, /* Single Step trap. - regs valid */
} kdb_reason_t;
extern int kdb_trap_printk;
extern int vkdb_printf(const char *fmt, va_list args)
__attribute__ ((format (printf, 1, 0)));
extern int kdb_printf(const char *, ...)
__attribute__ ((format (printf, 1, 2)));
typedef int (*kdb_printf_t)(const char *, ...)