summaryrefslogtreecommitdiffstats
path: root/arch/sh/kernel/traps_32.c
diff options
context:
space:
mode:
authorMatt Fleming <matt@console-pimps.org>2009-08-16 16:44:08 +0200
committerMatt Fleming <matt@console-pimps.org>2009-08-21 14:02:43 +0200
commitfb3f3e7fc6d4afb32f9eba32124beaf40313de3c (patch)
tree69ed6cfbc123a188aabbe4a98209c935680c27a2 /arch/sh/kernel/traps_32.c
parentsh: unwinder: Move initialization to early_initcall() and tidy up locking. (diff)
downloadlinux-fb3f3e7fc6d4afb32f9eba32124beaf40313de3c.tar.xz
linux-fb3f3e7fc6d4afb32f9eba32124beaf40313de3c.zip
sh: unwinder: Fix memory leak and create our own kmem cache
Plug a memory leak in dwarf_unwinder_dump() where we didn't free the memory that we had previously allocated for the DWARF frames and DWARF registers. Now is also a opportune time to implement our own mempool and kmem cache. It's a good idea to have a certain number of frame and register objects in reserve at all times, so that we are guaranteed to have our allocation satisfied even when memory is scarce. Since we have pools to allocate from we can implement the registers for each frame as a linked list as opposed to a sparsely populated array. Whilst it's true that the lookup time for a linked list is larger than for arrays, there's only usually a maximum of 8 registers per frame. So the overhead isn't that much of a concern. Signed-off-by: Matt Fleming <matt@console-pimps.org>
Diffstat (limited to 'arch/sh/kernel/traps_32.c')
0 files changed, 0 insertions, 0 deletions