From mboxrd@z Thu Jan 1 00:00:00 1970 Message-Id: <20071004223141.599952000@sgi.com> References: <20071004223141.413776000@sgi.com> Date: Thu, 04 Oct 2007 15:31:42 -0700 From: travis@sgi.com Subject: [PATCH 1/1] ia64: Convert cpu_sibling_map to a per_cpu data array FIX Content-Disposition: inline; filename=convert-cpu_sibling_map-to-a-per_cpu-data-array-ia64-fix Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton , Paul Jackson , Tony Luck , Christoph Lameter Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Mike Travis List-ID: There are two versions of per_cpu_init() for ia64. This patch corrects the problem that one of the versions did not insert the boot cpu into the cpu sibling and core maps. Signed-off-by: Mike Travis --- arch/ia64/kernel/setup.c | 8 ++++++++ arch/ia64/mm/contig.c | 6 ------ 2 files changed, 8 insertions(+), 6 deletions(-) --- linux.orig/arch/ia64/kernel/setup.c 2007-10-04 14:38:53.000000000 -0700 +++ linux/arch/ia64/kernel/setup.c 2007-10-04 14:51:46.289055433 -0700 @@ -873,6 +873,14 @@ cpu_init (void) void *cpu_data; cpu_data = per_cpu_init(); + /* + * insert boot cpu into sibling and core mapes + * (must be done after per_cpu area is setup) + */ + if (smp_processor_id() == 0) { + cpu_set(0, per_cpu(cpu_sibling_map, 0)); + cpu_set(0, cpu_core_map[0]); + } /* * We set ar.k3 so that assembly code in MCA handler can compute --- linux.orig/arch/ia64/mm/contig.c 2007-10-04 14:38:53.000000000 -0700 +++ linux/arch/ia64/mm/contig.c 2007-10-04 14:50:12.699513748 -0700 @@ -212,12 +212,6 @@ per_cpu_init (void) cpu_data += PERCPU_PAGE_SIZE; per_cpu(local_per_cpu_offset, cpu) = __per_cpu_offset[cpu]; } - /* - * cpu_sibling_map is now a per_cpu variable - it needs to - * be accessed after per_cpu_init() sets up the per_cpu area. - */ - cpu_set(0, per_cpu(cpu_sibling_map, 0)); - cpu_set(0, cpu_core_map[0]); } return __per_cpu_start + __per_cpu_offset[smp_processor_id()]; } -- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org