| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20110724105018.GO2622@htj.dyndns.org>
Date: Sun, 24 Jul 2011 12:50:18 +0200
From: Tejun Heo <tj@...nel.org>
To: "David S. Miller" <davem@...emloft.net>
Cc: sparclinux@...r.kernel.org, linux-kernel@...r.kernel.org,
"H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH tip:x86/memblock RFC] sparc: Use HAVE_MEMBLOCK_NODE_MAP
sparc doesn't access early_node_map[] directly and enabling
HAVE_MEMBLOCK_NODE_MAP is trivial - replacing add_active_range() calls
with memblock_set_node() and selecting HAVE_MEMBLOCK_NODE_MAP is
enough.
Signed-off-by: Tejun Heo <tj@...nel.org>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: sparclinux@...r.kernel.org
---
David, memblock now can carry node information itself without relying
on early_node_map[], which makes operations which make use of both
information much saner and generally makes NUMA memory init simpler.
Boot-tested 64bit [!]SMP [!]NUMA on my non-NUMA u60. Compile tested
32bit [!]SMP.
The patches implementing HAVE_MEMBLOCK_NODE_MAP is currently in
tip:x86/memblock branch on which this patch is based on.
Thanks.
arch/sparc/Kconfig | 3 +++
arch/sparc/mm/init_64.c | 24 ++++--------------------
2 files changed, 7 insertions(+), 20 deletions(-)
Index: work/arch/sparc/Kconfig
===================================================================
--- work.orig/arch/sparc/Kconfig
+++ work/arch/sparc/Kconfig
@@ -356,6 +356,9 @@ config NODES_SPAN_OTHER_NODES
config ARCH_POPULATES_NODE_MAP
def_bool y if SPARC64
+config HAVE_MEMBLOCK_NODE_MAP
+ def_bool y if SPARC64
+
config ARCH_SELECT_MEMORY_MODEL
def_bool y if SPARC64
Index: work/arch/sparc/mm/init_64.c
===================================================================
--- work.orig/arch/sparc/mm/init_64.c
+++ work/arch/sparc/mm/init_64.c
@@ -811,7 +811,7 @@ static u64 memblock_nid_range(u64 start,
#endif
/* This must be invoked after performing all of the necessary
- * add_active_range() calls for 'nid'. We need to be able to get
+ * memblock_set_node() calls for 'nid'. We need to be able to get
* correct data from get_pfn_range_for_nid().
*/
static void __init allocate_node_data(int nid)
@@ -982,14 +982,11 @@ static void __init add_node_ranges(void)
this_end = memblock_nid_range(start, end, &nid);
- numadbg("Adding active range nid[%d] "
+ numadbg("Setting memblock NUMA node nid[%d] "
"start[%lx] end[%lx]\n",
nid, start, this_end);
- add_active_range(nid,
- start >> PAGE_SHIFT,
- this_end >> PAGE_SHIFT);
-
+ memblock_set_node(start, this_end - start, nid);
start = this_end;
}
}
@@ -1277,7 +1274,6 @@ static void __init bootmem_init_nonnuma(
{
unsigned long top_of_ram = memblock_end_of_DRAM();
unsigned long total_ram = memblock_phys_mem_size();
- struct memblock_region *reg;
numadbg("bootmem_init_nonnuma()\n");
@@ -1287,20 +1283,8 @@ static void __init bootmem_init_nonnuma(
(top_of_ram - total_ram) >> 20);
init_node_masks_nonnuma();
-
- for_each_memblock(memory, reg) {
- unsigned long start_pfn, end_pfn;
-
- if (!reg->size)
- continue;
-
- start_pfn = memblock_region_memory_base_pfn(reg);
- end_pfn = memblock_region_memory_end_pfn(reg);
- add_active_range(0, start_pfn, end_pfn);
- }
-
+ memblock_set_node(0, (phys_addr_t)ULLONG_MAX, 0);
allocate_node_data(0);
-
node_set_online(0);
}
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists