| 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: <1364313298-17336-34-git-send-email-jiang.liu@huawei.com>
Date: Tue, 26 Mar 2013 23:54:52 +0800
From: Jiang Liu <liuj97@...il.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
David Rientjes <rientjes@...gle.com>
Cc: Jiang Liu <jiang.liu@...wei.com>,
Wen Congyang <wency@...fujitsu.com>,
Mel Gorman <mgorman@...e.de>, Minchan Kim <minchan@...nel.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
Michal Hocko <mhocko@...e.cz>,
James Bottomley <James.Bottomley@...senPartnership.com>,
Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
David Howells <dhowells@...hat.com>,
Mark Salter <msalter@...hat.com>,
Jianguo Wu <wujianguo@...wei.com>, linux-mm@...ck.org,
linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
Chris Metcalf <cmetcalf@...era.com>,
Bjorn Helgaas <bhelgaas@...gle.com>,
"David S. Miller" <davem@...emloft.net>
Subject: [PATCH v3, part4 33/39] mm/tile: prepare for removing num_physpages and simplify mem_init()
Prepare for removing num_physpages and simplify mem_init().
Signed-off-by: Jiang Liu <jiang.liu@...wei.com>
Cc: Chris Metcalf <cmetcalf@...era.com>
Cc: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Wen Congyang <wency@...fujitsu.com>
Cc: linux-kernel@...r.kernel.org
---
Hi all,
Sorry for my mistake that my previous patch series has been screwed up.
So I regenerate a third version and also set up a git tree at:
git://github.com/jiangliu/linux.git mem_init
Any help to review and test are welcomed!
Regards!
Gerry
---
arch/tile/kernel/setup.c | 16 ++++++++--------
arch/tile/mm/init.c | 15 +--------------
2 files changed, 9 insertions(+), 22 deletions(-)
diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c
index a986b71..54469a5 100644
--- a/arch/tile/kernel/setup.c
+++ b/arch/tile/kernel/setup.c
@@ -329,6 +329,7 @@ static void __init setup_memory(void)
#if defined(CONFIG_HIGHMEM) || defined(__tilegx__)
long lowmem_pages;
#endif
+ unsigned long physpages = 0;
/* We are using a char to hold the cpu_2_node[] mapping */
BUILD_BUG_ON(MAX_NUMNODES > 127);
@@ -388,8 +389,8 @@ static void __init setup_memory(void)
continue;
}
}
- if (num_physpages + PFN_DOWN(range.size) > maxmem_pfn) {
- int max_size = maxmem_pfn - num_physpages;
+ if (physpages + PFN_DOWN(range.size) > maxmem_pfn) {
+ int max_size = maxmem_pfn - physpages;
if (max_size > 0) {
pr_err("Maxmem reduced node %d to %d pages\n",
i, max_size);
@@ -446,7 +447,7 @@ static void __init setup_memory(void)
node_start_pfn[i] = start;
node_end_pfn[i] = end;
node_controller[i] = range.controller;
- num_physpages += size;
+ physpages += size;
max_pfn = end;
/* Mark node as online */
@@ -465,7 +466,7 @@ static void __init setup_memory(void)
* we're willing to use at 8 million pages (32GB of 4KB pages).
*/
cap = 8 * 1024 * 1024; /* 8 million pages */
- if (num_physpages > cap) {
+ if (physpages > cap) {
int num_nodes = num_online_nodes();
int cap_each = cap / num_nodes;
unsigned long dropped_pages = 0;
@@ -476,10 +477,10 @@ static void __init setup_memory(void)
node_end_pfn[i] = node_start_pfn[i] + cap_each;
}
}
- num_physpages -= dropped_pages;
+ physpages -= dropped_pages;
pr_warning("Only using %ldMB memory;"
" ignoring %ldMB.\n",
- num_physpages >> (20 - PAGE_SHIFT),
+ physpages >> (20 - PAGE_SHIFT),
dropped_pages >> (20 - PAGE_SHIFT));
pr_warning("Consider using a larger page size.\n");
}
@@ -497,7 +498,7 @@ static void __init setup_memory(void)
lowmem_pages = (mappable_physpages > MAXMEM_PFN) ?
MAXMEM_PFN : mappable_physpages;
- highmem_pages = (long) (num_physpages - lowmem_pages);
+ highmem_pages = (long) (physpages - lowmem_pages);
pr_notice("%ldMB HIGHMEM available.\n",
pages_to_mb(highmem_pages > 0 ? highmem_pages : 0));
@@ -514,7 +515,6 @@ static void __init setup_memory(void)
pr_warning("Use a HIGHMEM enabled kernel.\n");
max_low_pfn = MAXMEM_PFN;
max_pfn = MAXMEM_PFN;
- num_physpages = MAXMEM_PFN;
node_end_pfn[0] = MAXMEM_PFN;
} else {
pr_notice("%ldMB memory available.\n",
diff --git a/arch/tile/mm/init.c b/arch/tile/mm/init.c
index f2ac2f4..e182958 100644
--- a/arch/tile/mm/init.c
+++ b/arch/tile/mm/init.c
@@ -821,7 +821,6 @@ static void __init set_max_mapnr_init(void)
void __init mem_init(void)
{
- int codesize, datasize, initsize;
int i;
#ifndef __tilegx__
void *last;
@@ -853,19 +852,7 @@ void __init mem_init(void)
set_non_bootmem_pages_init();
#endif
- codesize = (unsigned long)&_etext - (unsigned long)&_text;
- datasize = (unsigned long)&_end - (unsigned long)&_sdata;
- initsize = (unsigned long)&_einittext - (unsigned long)&_sinittext;
- initsize += (unsigned long)&_einitdata - (unsigned long)&_sinitdata;
-
- pr_info("Memory: %luk/%luk available (%dk kernel code, %dk data, %dk init, %ldk highmem)\n",
- (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
- num_physpages << (PAGE_SHIFT-10),
- codesize >> 10,
- datasize >> 10,
- initsize >> 10,
- (unsigned long) (totalhigh_pages << (PAGE_SHIFT-10))
- );
+ mem_init_print_info(NULL);
/*
* In debug mode, dump some interesting memory mappings.
--
1.7.9.5
--
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