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| author | imp <imp@FreeBSD.org> | 2014-01-22 22:25:48 +0000 |
|---|---|---|
| committer | imp <imp@FreeBSD.org> | 2014-01-22 22:25:48 +0000 |
| commit | 1db44788fce93bcecc0f9f50658ad04f7303228e (patch) | |
| tree | 4c499c541afc6bca9ef878424cd95e15bf1dde49 /sys/conf | |
| parent | a91ad8c840890232f4e42f88c7ed1f1284096030 (diff) | |
| download | FreeBSD-src-1db44788fce93bcecc0f9f50658ad04f7303228e.zip FreeBSD-src-1db44788fce93bcecc0f9f50658ad04f7303228e.tar.gz | |
Document EARLY_PRINTF
Diffstat (limited to 'sys/conf')
| -rw-r--r-- | sys/conf/NOTES | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sys/conf/NOTES b/sys/conf/NOTES index b537797..9d74130 100644 --- a/sys/conf/NOTES +++ b/sys/conf/NOTES @@ -446,6 +446,15 @@ options DEBUG_MEMGUARD options DEBUG_REDZONE # +# EARLY_PRINTF enables support for calling a special printf (eprintf) +# very early in the kernel (before cn_init() has been called). This +# should only be used for debugging purposes early in boot. Normally, +# it is not defined. It is commented out here because this feature +# isn't generally available. And the required eputc() isn't defined. +# +#options EARLY_PRINTF + +# # KTRACE enables the system-call tracing facility ktrace(2). To be more # SMP-friendly, KTRACE uses a worker thread to process most trace events # asynchronously to the thread generating the event. This requires a |
