From: Christoph Lameter <clameter@sgi.com>
To: akpm@linux-foundation.org
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, ak@suse.de,
travis@sgi.com
Subject: [14/18] Configure stack size
Date: Wed, 03 Oct 2007 20:59:49 -0700 [thread overview]
Message-ID: <20071004040004.936534357@sgi.com> (raw)
In-Reply-To: 20071004035935.042951211@sgi.com
[-- Attachment #1: vcompound_x86_64_config_stack_size --]
[-- Type: text/plain, Size: 2732 bytes --]
Make the stack size configurable now that we can fallback to vmalloc if
necessary. SGI NUMA configurations may need more stack because cpumasks
and nodemasks are at times kept on the stack. With the coming 16k cpu
support this is going to be 2k just for the mask. This patch allows to
run with 16k or 32k kernel stacks on x86_74.
Cc: ak@suse.de
Cc: travis@sgi.com
Signed-off-by: Christoph Lameter <clameter@sgi.com>
---
arch/x86_64/Kconfig | 6 ++++++
include/asm-x86_64/page.h | 3 +--
include/asm-x86_64/thread_info.h | 4 ++--
3 files changed, 9 insertions(+), 4 deletions(-)
Index: linux-2.6/arch/x86_64/Kconfig
===================================================================
--- linux-2.6.orig/arch/x86_64/Kconfig 2007-10-03 18:11:20.000000000 -0700
+++ linux-2.6/arch/x86_64/Kconfig 2007-10-03 18:12:13.000000000 -0700
@@ -363,6 +363,12 @@ config NODES_SHIFT
default "6"
depends on NEED_MULTIPLE_NODES
+config THREAD_ORDER
+ int "Kernel stack size (in page order)"
+ default "1"
+ help
+ Page order for the thread stack.
+
# Dummy CONFIG option to select ACPI_NUMA from drivers/acpi/Kconfig.
config X86_64_ACPI_NUMA
Index: linux-2.6/include/asm-x86_64/page.h
===================================================================
--- linux-2.6.orig/include/asm-x86_64/page.h 2007-10-03 18:11:20.000000000 -0700
+++ linux-2.6/include/asm-x86_64/page.h 2007-10-03 18:12:13.000000000 -0700
@@ -9,8 +9,7 @@
#define PAGE_MASK (~(PAGE_SIZE-1))
#define PHYSICAL_PAGE_MASK (~(PAGE_SIZE-1) & __PHYSICAL_MASK)
-#define THREAD_ORDER 1
-#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
+#define THREAD_SIZE (PAGE_SIZE << CONFIG_THREAD_ORDER)
#define CURRENT_MASK (~(THREAD_SIZE-1))
#define EXCEPTION_STACK_ORDER 0
Index: linux-2.6/include/asm-x86_64/thread_info.h
===================================================================
--- linux-2.6.orig/include/asm-x86_64/thread_info.h 2007-10-03 18:12:13.000000000 -0700
+++ linux-2.6/include/asm-x86_64/thread_info.h 2007-10-03 18:12:13.000000000 -0700
@@ -80,9 +80,9 @@ static inline struct thread_info *stack_
#endif
#define alloc_thread_info(tsk) \
- ((struct thread_info *) __get_free_pages(THREAD_FLAGS, THREAD_ORDER))
+ ((struct thread_info *) __get_free_pages(THREAD_FLAGS, CONFIG_THREAD_ORDER))
-#define free_thread_info(ti) free_pages((unsigned long) (ti), THREAD_ORDER)
+#define free_thread_info(ti) free_pages((unsigned long) (ti), CONFIG_THREAD_ORDER)
#else /* !__ASSEMBLY__ */
--
--
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next prev parent reply other threads:[~2007-10-04 3:59 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-04 3:59 [00/18] Virtual Compound Page Support V2 Christoph Lameter
2007-10-04 3:59 ` [01/18] vmalloc: clean up page array indexing Christoph Lameter
2007-10-04 3:59 ` [02/18] vunmap: return page array passed on vmap() Christoph Lameter
2007-10-04 3:59 ` [03/18] vmalloc_address(): Determine vmalloc address from page struct Christoph Lameter
2007-10-04 3:59 ` [04/18] Vcompound: Smart up virt_to_head_page() Christoph Lameter
2007-10-04 3:59 ` [05/18] Page flags: Add PageVcompound() Christoph Lameter
2007-10-04 3:59 ` [06/18] Vcompound: Update page address determination Christoph Lameter
2007-10-04 3:59 ` [07/18] Vcompound: Add compound_nth_page() to determine nth base page Christoph Lameter
2007-10-04 3:59 ` [08/18] GFP_VFALLBACK: Allow fallback of compound pages to virtual mappings Christoph Lameter
2007-10-04 3:59 ` [09/18] Vcompound: GFP_VFALLBACK debugging aid Christoph Lameter
2007-10-04 3:59 ` [10/18] Sparsemem: Use fallback for the memmap Christoph Lameter
2007-10-04 3:59 ` [11/18] Page allocator: Use a higher order allocation for the zone wait table Christoph Lameter
2007-10-04 3:59 ` [12/18] Wait: Allow bit_waitqueue to wait on a bit in a virtual compound page Christoph Lameter
2007-10-04 3:59 ` [13/18] x86_64: Allow fallback for the stack Christoph Lameter
2007-10-04 11:56 ` Andi Kleen
2007-10-04 12:08 ` Peter Zijlstra
2007-10-04 12:25 ` Andi Kleen
2007-10-04 12:30 ` Peter Zijlstra
2007-10-04 17:40 ` Christoph Lameter
2007-10-04 19:20 ` Christoph Lameter
2007-10-04 19:39 ` Rik van Riel
2007-10-04 21:20 ` Christoph Lameter
2007-10-07 7:35 ` Nick Piggin
2007-10-08 17:36 ` Christoph Lameter
2007-10-08 12:55 ` Nick Piggin
2007-10-09 18:39 ` Christoph Lameter
2007-10-09 8:46 ` Nick Piggin
2007-10-10 1:26 ` Christoph Lameter
2007-10-09 9:56 ` Nick Piggin
2007-10-10 3:36 ` where to get ZONE_MOVABLE pathces? Jacky(GuangXiang Lee)
2007-10-10 10:32 ` Mel Gorman
2007-10-06 18:53 ` [13/18] x86_64: Allow fallback for the stack Bill Davidsen
2007-10-04 3:59 ` Christoph Lameter [this message]
2007-10-04 4:36 ` [14/18] Configure stack size Arjan van de Ven
2007-10-04 4:43 ` David Miller, Arjan van de Ven
2007-10-04 19:34 ` Christoph Lameter
2007-10-04 9:11 ` Andi Kleen
2007-10-04 19:26 ` Christoph Lameter
2007-10-04 3:59 ` [15/18] Fallback for temporary order 2 allocation Christoph Lameter
2007-10-04 3:59 ` [16/18] Virtual Compound page allocation from interrupt context Christoph Lameter
2007-10-04 3:59 ` [17/18] Virtual compound page freeing in " Christoph Lameter
2007-10-04 3:59 ` [18/18] SLUB: Use fallback for table of callers/freers of a slab cache Christoph Lameter
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