Date: Tue, 20 Jul 2010 00:46:19 +0000 (UTC) From: Lawrence Stewart <lstewart@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: r210273 - stable/8/sys/sys Message-ID: <201007200046.o6K0kJOo034901@svn.freebsd.org>
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Author: lstewart Date: Tue Jul 20 00:46:18 2010 New Revision: 210273 URL: http://svn.freebsd.org/changeset/base/210273 Log: MFC r209978,209981,209987,210184: - Rename DPCPU_SUM to DPCPU_VARSUM to better reflect the fact it operates on member variables of a DPCPU struct (r209978). - Add DPCPU_SUM which sums a DPCPU variable (r209978,209987,210184). - Macro to simplify zeroing DPCPU variables (r209981,209987). Sponsored by: FreeBSD Foundation Modified: stable/8/sys/sys/pcpu.h 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/sys/pcpu.h ============================================================================== --- stable/8/sys/sys/pcpu.h Tue Jul 20 00:32:11 2010 (r210272) +++ stable/8/sys/sys/pcpu.h Tue Jul 20 00:46:18 2010 (r210273) @@ -112,7 +112,19 @@ extern uintptr_t dpcpu_off[]; /* * Utility macros. */ -#define DPCPU_SUM(n, var) __extension__ \ +#define DPCPU_SUM(n) __extension__ \ +({ \ + u_int _i; \ + __typeof(*DPCPU_PTR(n)) sum; \ + \ + sum = 0; \ + CPU_FOREACH(_i) { \ + sum += *DPCPU_ID_PTR(_i, n); \ + } \ + sum; \ +}) + +#define DPCPU_VARSUM(n, var) __extension__ \ ({ \ u_int _i; \ __typeof((DPCPU_PTR(n))->var) sum; \ @@ -124,6 +136,14 @@ extern uintptr_t dpcpu_off[]; sum; \ }) +#define DPCPU_ZERO(n) do { \ + u_int _i; \ + \ + CPU_FOREACH(_i) { \ + bzero(DPCPU_ID_PTR(_i, n), sizeof(*DPCPU_PTR(n))); \ + } \ +} while(0) + /* * XXXUPS remove as soon as we have per cpu variable * linker sets and can define rm_queue in _rm_lock.h
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