Jeremy Fitzhardinge 35c7422649 [PATCH] x86: deflate stack usage in lib/inflate.c ... inflate_fixed and huft_build together use around 2.7k of stack. When using 4k stacks, I saw stack overflows from interrupts arriving while unpacking the root initrd: do_IRQ: stack overflow: 384 [<c0106b64>] show_trace_log_lvl+0x1a/0x30 [<c01075e6>] show_trace+0x12/0x14 [<c010763f>] dump_stack+0x16/0x18 [<c0107ca4>] do_IRQ+0x6d/0xd9 [<c010202b>] xen_evtchn_do_upcall+0x6e/0xa2 [<c0106781>] xen_hypervisor_callback+0x25/0x2c [<c010116c>] xen_restore_fl+0x27/0x29 [<c0330f63>] _spin_unlock_irqrestore+0x4a/0x50 [<c0117aab>] change_page_attr+0x577/0x584 [<c0117b45>] kernel_map_pages+0x8d/0xb4 [<c016a314>] cache_alloc_refill+0x53f/0x632 [<c016a6c2>] __kmalloc+0xc1/0x10d [<c0463d34>] malloc+0x10/0x12 [<c04641c1>] huft_build+0x2a7/0x5fa [<c04645a5>] inflate_fixed+0x91/0x136 [<c04657e2>] unpack_to_rootfs+0x5f2/0x8c1 [<c0465acf>] populate_rootfs+0x1e/0xe4 (This was under Xen, but there's no reason it couldn't happen on bare hardware.) This patch mallocs the local variables, thereby reducing the stack usage to sane levels. Also, up the heap size for the kernel decompressor to deal with the extra allocation. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Tim Yamin <plasmaroo@gentoo.org> Cc: Andi Kleen <ak@suse.de> Cc: Matt Mackall <mpm@selenic.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ian Molton <spyro@f2s.com>		2007-05-02 19:27:15 +02:00
..
boot	[PATCH] x86: deflate stack usage in lib/inflate.c	2007-05-02 19:27:15 +02:00
crypto	[CRYPTO] api: Get rid of flags argument to setkey	2006-09-21 11:41:02 +10:00
ia32	[PATCH] x86-64: fix ia32_binfmt.c build error	2007-05-02 19:27:08 +02:00
kernel	[PATCH] x86-64: x86-64 system crashes when no memory populating Node 0	2007-05-02 19:27:13 +02:00
lib	Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq	2007-02-26 14:17:50 -08:00
mm	[PATCH] x86-64: Inhibit machine from asserting an NMI when doing Alt-SysRq-M operation.	2007-05-02 19:27:11 +02:00
oprofile	[PATCH] Move Kprobes and Oprofile to "Instrumentation Support" menu	2005-11-07 07:53:35 -08:00
pci	[PATCH] mmconfig: fix unreachable_devices()	2007-02-13 13:26:20 +01:00
defconfig	[PATCH] x86-64: Update defconfig	2007-05-02 19:27:04 +02:00
Kconfig	[PATCH] x86-64: Relocatable Kernel Support	2007-05-02 19:27:07 +02:00
Kconfig.debug	[PATCH] lockdep: irqtrace subsystem, x86_64 support	2006-07-03 15:27:03 -07:00
Makefile	[PATCH] x86-64: Don't disable basic block reordering	2007-05-02 19:27:08 +02:00