On Nov 13, 2014, at 14:11, Scott Long <sco...@freebsd.org> wrote: > > Author: scottl > Date: Thu Nov 13 22:11:44 2014 > New Revision: 274489 > URL: https://svnweb.freebsd.org/changeset/base/274489 > > Log: > Extend earlier addition of stack frames to most of support.S. This makes > stack traces in KDB, HWPMC, and DTrace much more reliable and useful.
No performance differences? The kernel enables/disables the compiler option to omit the frame pointer based on the kernel config file. If DDB, DTrace, or HWPMC is enabled, the frame pointer is always saved in C functions. Some of these functions are in the hot path, so if you didn't see any performance problem, I wonder if we should disable -fomit-frame-pointer always. -- Rui Paulo _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
