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| author | zec <zec@FreeBSD.org> | 2010-02-04 07:55:42 +0000 |
|---|---|---|
| committer | zec <zec@FreeBSD.org> | 2010-02-04 07:55:42 +0000 |
| commit | 393450ca7b6226ab2ec1b9837777e0651d534a4e (patch) | |
| tree | 7764b989a82fe6fe95e035ec04067054114e99ad /sys/net/vnet.h | |
| parent | 6db2453429c4a733846d86797a80dc47edc2aba9 (diff) | |
| download | FreeBSD-src-393450ca7b6226ab2ec1b9837777e0651d534a4e.zip FreeBSD-src-393450ca7b6226ab2ec1b9837777e0651d534a4e.tar.gz | |
Instead of spamming the console on each curvnet recursion event, print
out each such call graph only once, along with a stack backtrace. This
should make kernels built with VNET_DEBUG reasonably usable again in
busy / production environments.
Introduce a new DDB command "show vnetrcrs" which dumps the whole log
of distinctive curvnet recursion events. This might be useful when
recursion reports get burried / lost too deep in the message buffer.
In the later case stack backtraces are not available.
Reviewed by: bz
MFC after: 3 days
Diffstat (limited to 'sys/net/vnet.h')
| -rw-r--r-- | sys/net/vnet.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/sys/net/vnet.h b/sys/net/vnet.h index 116d7af..d9a1ee0 100644 --- a/sys/net/vnet.h +++ b/sys/net/vnet.h @@ -108,6 +108,8 @@ void vnet_destroy(struct vnet *vnet); * assertions. */ #ifdef VNET_DEBUG +void vnet_log_recursion(struct vnet *, const char *, int); + #define VNET_ASSERT(condition) \ if (!(condition)) { \ printf("VNET_ASSERT @ %s:%d %s():\n", \ @@ -125,9 +127,7 @@ void vnet_destroy(struct vnet *vnet); #define CURVNET_SET_VERBOSE(arg) \ CURVNET_SET_QUIET(arg) \ if (saved_vnet) \ - printf("CURVNET_SET(%p) in %s() on cpu %d, prev %p in %s()\n", \ - curvnet, curthread->td_vnet_lpush, curcpu, \ - saved_vnet, saved_vnet_lpush); + vnet_log_recursion(saved_vnet, saved_vnet_lpush, __LINE__); #define CURVNET_SET(arg) CURVNET_SET_VERBOSE(arg) |
