Date: Fri, 25 Apr 2003 12:59:35 -0700 (PDT) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern kern_ktrace.c Message-ID: <200304251959.h3PJxZhZ075361@repoman.freebsd.org>
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jhb 2003/04/25 12:59:35 PDT
FreeBSD src repository
Modified files:
sys/kern kern_ktrace.c
Log:
- Push down Giant around vnode operations in ktrace().
- Mark the ktrace() and utrace() syscalls as being MP safe.
- Validate the facs argument to ktrace() prior to doing any vnode
operations or acquiring any locks.
- Share lock the proctree lock over the entire section that calls
ktrsetchildren() and ktrops(). We already did this for process groups.
Doing it for the process case closes a small race where a process might
go away after we look it up. As a result of this, ktrstchildren() now
just asserts that the proctree lock is locked rather than acquiring the
lock itself.
- Add some missing comments to #else and #endif.
Revision Changes Path
1.84 +39 -22 src/sys/kern/kern_ktrace.c
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