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
kernel	[PATCH] i386: PARAVIRT: drop unused ptep_get_and_clear	2007-05-02 19:27:15 +02:00
lib	[PATCH] i386: type cast clean up for find_next_zero_bit	2007-05-02 19:27:08 +02:00
mach-default	[PATCH] clockevents: i386 drivers	2007-02-16 08:13:59 -08:00
mach-es7000
mach-generic	[PATCH] i386: modpost apic related warning fixes	2007-05-02 19:27:08 +02:00
mach-visws
mach-voyager	[PATCH] i386: Use per-cpu GDT immediately upon boot	2007-05-02 19:27:10 +02:00
math-emu	[PATCH] i386: avoid gcc extension	2007-02-13 13:26:24 +01:00
mm	[PATCH] i386: PARAVIRT: flush lazy mmu updates on kunmap_atomic	2007-05-02 19:27:15 +02:00
oprofile	[PATCH] i386: Support Oprofile for AMD Family 10 CPUs	2007-05-02 19:27:06 +02:00
pci	[PATCH] MSI-X: fix resume crash	2007-03-28 13:59:37 -07:00
power	[PATCH] x86: Move swsusp __pa() dependent code to arch portion	2007-05-02 19:27:07 +02:00
defconfig	[PATCH] i386: Update defconfig	2007-05-02 19:27:04 +02:00
Kconfig	[PATCH] i386: Use menuconfig objects - APM	2007-05-02 19:27:12 +02:00
Kconfig.cpu	[PATCH] i386: Add an option for the VIA C7 which sets appropriate L1 cache	2007-05-02 19:27:05 +02:00
Kconfig.debug	[PATCH] i386: PARAVIRT: Remove CONFIG_DEBUG_PARAVIRT	2007-05-02 19:27:13 +02:00
Makefile	[PATCH] x86: Drop cc-options call for all options supported in gcc 3.2+	2007-05-02 19:27:06 +02:00
Makefile.cpu	[PATCH] i386: Fix usage of -mtune when X86_GENERIC=y or CONFIG_MCORE2=y	2007-05-02 19:27:06 +02:00