src/sys/tools/vnode_if.awk, branch releng/11.0

save some bytes by using more concise SDT_PROBE instead of SDT_PROBE

2015-09-28T12:14:16Z

SDT_PROBE requires 5 parameters whereas SDT_PROBE requires n parameters where n is typically smaller than 5. Perhaps SDT_PROBE should be made a private implementation detail. MFC after: 20 days

dtrace sdt: remove the ugly sname parameter of SDT_PROBE_DEFINE

2013-11-26T08:46:27Z

In its stead use the Solaris / illumos approach of emulating '-' (dash) in probe names with '__' (two consecutive underscores). Reviewed by: markj MFC after: 3 weeks

- For kernel compiled only with KDTRACE_HOOKS and not any lock debugging

2013-11-25T07:38:45Z

option, unbreak the lock tracing release semantic by embedding calls to LOCKSTAT_PROFILE_RELEASE_LOCK() direclty in the inlined version of the releasing functions for mutex, rwlock and sxlock. Failing to do so skips the lockstat_probe_func invokation for unlocking. - As part of the LOCKSTAT support is inlined in mutex operation, for kernel compiled without lock debugging options, potentially every consumer must be compiled including opt_kdtrace.h. Fix this by moving KDTRACE_HOOKS into opt_global.h and remove the dependency by opt_kdtrace.h for all files, as now only KDTRACE_FRAMES is linked there and it is only used as a compile-time stub [0]. [0] immediately shows some new bug as DTRACE-derived support for debug in sfxge is broken and it was never really tested. As it was not including correctly opt_kdtrace.h before it was never enabled so it was kept broken for a while. Fix this by using a protection stub, leaving sfxge driver authors the responsibility for fixing it appropriately [1]. Sponsored by: EMC / Isilon storage division Discussed with: rstone [0] Reported by: rstone [1] Discussed with: philip

Further refine the handling of stop signals in the NFS client. The

2013-02-21T19:02:50Z

changes in r246417 were incomplete as they did not add explicit calls to sigdeferstop() around all the places that previously passed SBDRY to _sleep(). In addition, nfs_getcacheblk() could trigger a write RPC from getblk() resulting in sigdeferstop() recursing. Rather than manually deferring stop signals in specific places, change the VFS_*() and VOP_*() methods to defer stop signals for filesystems which request this behavior via a new VFCF_SBDRY flag. Note that this has to be a VFC flag rather than a MNTK flag so that it works properly with VFS_MOUNT() when the mount is not yet fully constructed. For now, only the NFS clients are set this new flag in VFS_SET(). A few other related changes: - Add an assertion to ensure that TDF_SBDRY doesn't leak to userland. - When a lookup request uses VOP_READLINK() to follow a symlink, mark the request as being on behalf of the thread performing the lookup (cnp_thread) rather than using a NULL thread pointer. This causes NFS to properly handle signals during this VOP on an interruptible mount. PR: kern/176179 Reported by: Russell Cattelan (sigdeferstop() recursion) Reviewed by: kib MFC after: 1 month

Fix build on ARM (and probably other platforms)

2012-12-28T06:52:53Z

- Add new machine parsable KTR macros for timing events.

2012-12-19T20:10:00Z

- Use this new format to automatically handle syscalls and VOPs. This changes the earlier format but is still human readable. Sponsored by: EMC / Isilon Storage Division

Make vnode_if.awk parse vnode operations with underscores, like VOP_FOO_BAR.

2012-02-21T19:35:59Z

Reviewed by: kib MFC after: 1 week

Add an extra comment to the SDT probes definition. This allows us to get

2010-08-22T11:18:57Z

use '-' in probe names, matching the probe names in Solaris.[1] Add userland SDT probes definitions to sys/sdt.h. Sponsored by: The FreeBSD Foundation Discussed with: rwaston [1]

Add SDT DTrace probes for VFS vnode operations in the vfs:vop

2009-03-29T03:30:15Z

provider namespace. These are inserted dynamically into the VOP_..._AP() functions created from vnode_if.src. Each VOP has entry and return probes, as arg0 the primary vnode, arg1 the vnode operation argument structure pointer, providing access to IN and OUT arguments, and for return probes, arg2 the return value. MFC after: 1 month Sponsored by: Google, Inc.

Remove some unused and broken code that attempted to not invoke locking

2008-11-03T19:57:40Z

asserts on NULL vnode pointers. All the vnode assertion routines already check for NULL vnode pointers.