Commit Graph

11 Commits

Author SHA1 Message Date
Mark Johnston
67cf27b70f libdtrace: add support for lazyload mode.
Passing "-x lazyload" to dtrace -G during compilation causes dtrace(1) to
not link drti.o into the output object file, so the USDT probes are not created
during process startup. Instead, dtrace(1) will automatically discover and
create probes on the process' behalf when attaching.

Differential Revision:	https://reviews.freebsd.org/D2203
Reviewed by:		rpaulo
MFC after:		1 month
2015-04-08 02:36:37 +00:00
Steven Hartland
bc96366c86 Mechanically convert cddl sun #ifdef's to illumos
Since the upstream for cddl code is now illumos not sun, mechanically
convert all sun #ifdef's to illumos #ifdef's which have been used in all
newer code for some time.

Also do a manual pass to correct the use if #ifdef comments as per style(9)
as well as few uses of #if defined(__FreeBSD__) vs #ifndef illumos.

MFC after:	1 month
Sponsored by:	Multiplay
2015-01-17 14:44:59 +00:00
Davide Italiano
a99098e2ba Continue the crusade towards a dev_clone()-free kernel, removing its
usage from dtrace. The dtrace code already uses cdevpriv(9) since FreeBSD
8, so this change should be quite harmless.

Reviewed by:	markj
Approved by:	markj
MFC after:	never
2014-06-25 03:54:02 +00:00
Mark Johnston
b53bfbba65 Expose a few DTrace parameters as sysctls under kern.dtrace and add
descriptions for several existing sysctls.

PR:		187027
Submitted by:	Fedor Indutny <fedor@indutny.com> (original version)
MFC after:	2 weeks
2014-03-01 19:06:43 +00:00
Mark Johnston
46d27dbb38 Hide references to mod_lock. In FreeBSD it is always acquired with the
provider lock held, so its use has no effect.
2013-07-05 22:42:10 +00:00
Mark Johnston
09e6105ff4 Bring back part of r249367 by adding DTrace's temporal option, which allows
users to guarantee that the output of DTrace scripts will be time-ordered.
This option is enabled by adding the line

  #pragma D option temporal

to the beginning of a script, or by adding '-x temporal' to the arguments of
dtrace(1).

This change fixes a bug in the original port of the temporal option. This
bug was causing some assertions to fail, so they had been disabled; in this
revision the assertions are working properly and are enabled.

The DTrace version number has been bumped from 1.9.0 to 1.9.1 to reflect
the language change that's being introduced.

This change corresponds to part of illumos-gate commit e5803b76927480:
  3021 option for time-ordered output from dtrace(1M)

Reviewed by:	pfg
Obtained from:	illumos
MFC after:	1 month
2013-05-12 16:26:33 +00:00
Sergey Kandaurov
3c56b4f165 Fix warning: comparison of unsigned expression < 0 is always false.
Reported by:	clang
2013-02-08 09:54:53 +00:00
Oleksandr Tymoshenko
933fab9d73 Properly cast 64-bit dofhp_dof to pointer.
For i386 this change is no-op. For AMD64 it was tested with DTrace test
suite: results are the same from the test run before the change and after
2012-03-26 21:22:51 +00:00
Rui Paulo
c6f5742f90 Kernel DTrace support for:
o uregs  (sson@)
o ustack (sson@)
o /dev/dtrace/helper device (needed for USDT probes)

The work done by me was:
Sponsored by:	The FreeBSD Foundation
2010-08-22 10:53:32 +00:00
Craig Rodrigues
f5a97d1bcb Merge latest DTrace changes from Perforce. 2008-11-05 19:39:11 +00:00
John Birrell
91eaf3e183 Custom DTrace kernel module files plus FreeBSD-specific DTrace providers. 2008-05-23 05:59:42 +00:00