Date: Tue, 8 Dec 2009 18:23:52 +0000 (UTC) From: Fabien Thomas <fabient@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r200266 - stable/8/sys/kern Message-ID: <200912081823.nB8INqrT095799@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: fabient Date: Tue Dec 8 18:23:52 2009 New Revision: 200266 URL: http://svn.freebsd.org/changeset/base/200266 Log: MFC 198464: Inform hwpmc(4) of a thread's impending demise prior to invoking sched_throw(). Modified: stable/8/sys/kern/kern_thread.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) stable/8/sys/dev/xen/xenpci/ (props changed) Modified: stable/8/sys/kern/kern_thread.c ============================================================================== --- stable/8/sys/kern/kern_thread.c Tue Dec 8 18:23:51 2009 (r200265) +++ stable/8/sys/kern/kern_thread.c Tue Dec 8 18:23:52 2009 (r200266) @@ -27,6 +27,7 @@ */ #include "opt_witness.h" +#include "opt_hwpmc_hooks.h" #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); @@ -47,6 +48,9 @@ __FBSDID("$FreeBSD$"); #include <sys/ktr.h> #include <sys/umtx.h> #include <sys/cpuset.h> +#ifdef HWPMC_HOOKS +#include <sys/pmckern.h> +#endif #include <security/audit/audit.h> @@ -417,6 +421,14 @@ thread_exit(void) panic ("thread_exit: Last thread exiting on its own"); } } +#ifdef HWPMC_HOOKS + /* + * If this thread is part of a process that is being tracked by hwpmc(4), + * inform the module of the thread's impending exit. + */ + if (PMC_PROC_IS_USING_PMCS(td->td_proc)) + PMC_SWITCH_CONTEXT(td, PMC_FN_CSW_OUT); +#endif PROC_UNLOCK(p); thread_lock(td); /* Save our tick information with both the thread and proc locked */
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200912081823.nB8INqrT095799>