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| author | gnn <gnn@FreeBSD.org> | 2016-03-22 13:16:52 +0000 |
|---|---|---|
| committer | gnn <gnn@FreeBSD.org> | 2016-03-22 13:16:52 +0000 |
| commit | e4786b4992021d0bc643451d60dfd7f02f71f1b1 (patch) | |
| tree | bd95b33cf0ab6036f9c1dc0cafe9e96b282e3c5a /sys/kern/uipc_mbuf.c | |
| parent | 6b2ac2319d3fcce3d27b1ee406bc93ffe9eb7eac (diff) | |
| download | FreeBSD-src-e4786b4992021d0bc643451d60dfd7f02f71f1b1.zip FreeBSD-src-e4786b4992021d0bc643451d60dfd7f02f71f1b1.tar.gz | |
Add an mbuf provider to DTrace.
The mbuf provider is made up of a set of Statically Defined Tracepoints
which help us look into mbufs as they are allocated and freed. This can be
used to inspect the buffers or for a simplified mbuf leak detector.
New tracepoints are:
mbuf:::m-init
mbuf:::m-gethdr
mbuf:::m-get
mbuf:::m-getcl
mbuf:::m-clget
mbuf:::m-cljget
mbuf:::m-cljset
mbuf:::m-free
mbuf:::m-freem
There is also a translator for mbufs which gives some visibility into the structure,
see mbuf.d for more details.
Reviewed by: bz, markj
MFC after: 2 weeks
Sponsored by: Rubicon Communications (Netgate)
Differential Revision: https://reviews.freebsd.org/D5682
Diffstat (limited to 'sys/kern/uipc_mbuf.c')
| -rw-r--r-- | sys/kern/uipc_mbuf.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/sys/kern/uipc_mbuf.c b/sys/kern/uipc_mbuf.c index 23bfbff..791a652 100644 --- a/sys/kern/uipc_mbuf.c +++ b/sys/kern/uipc_mbuf.c @@ -47,6 +47,51 @@ __FBSDID("$FreeBSD$"); #include <sys/domain.h> #include <sys/protosw.h> #include <sys/uio.h> +#include <sys/sdt.h> + +SDT_PROVIDER_DEFINE(mbuf); + +SDT_PROBE_DEFINE5_XLATE(mbuf, , , m__init, + "struct mbuf *", "mbufinfo_t *", + "uint32_t", "uint32_t", + "uint16_t", "uint16_t", + "uint32_t", "uint32_t", + "uint32_t", "uint32_t"); + +SDT_PROBE_DEFINE3_XLATE(mbuf, , , m__gethdr, + "uint32_t", "uint32_t", + "uint16_t", "uint16_t", + "struct mbuf *", "mbufinfo_t *"); + +SDT_PROBE_DEFINE3_XLATE(mbuf, , , m__get, + "uint32_t", "uint32_t", + "uint16_t", "uint16_t", + "struct mbuf *", "mbufinfo_t *"); + +SDT_PROBE_DEFINE4_XLATE(mbuf, , , m__getcl, + "uint32_t", "uint32_t", + "uint16_t", "uint16_t", + "uint32_t", "uint32_t", + "struct mbuf *", "mbufinfo_t *"); + +SDT_PROBE_DEFINE3_XLATE(mbuf, , , m__clget, + "struct mbuf *", "mbufinfo_t *", + "uint32_t", "uint32_t", + "uint32_t", "uint32_t"); + +SDT_PROBE_DEFINE4_XLATE(mbuf, , , m__cljget, + "struct mbuf *", "mbufinfo_t *", + "uint32_t", "uint32_t", + "uint32_t", "uint32_t", + "void*", "void*"); + +SDT_PROBE_DEFINE(mbuf, , , m__cljset); + +SDT_PROBE_DEFINE1_XLATE(mbuf, , , m__free, + "struct mbuf *", "mbufinfo_t *"); + +SDT_PROBE_DEFINE1_XLATE(mbuf, , , m__freem, + "struct mbuf *", "mbufinfo_t *"); #include <security/mac/mac_framework.h> |
