summaryrefslogtreecommitdiff
path: root/lib/Kconfig.debug
diff options
context:
space:
mode:
authorGeorge Spelvin <linux@sciencehorizons.net>2016-05-27 05:11:51 +0300
committerGeorge Spelvin <linux@sciencehorizons.net>2016-05-28 22:48:31 +0300
commit468a9428521e7d00fb21250af363eb94dc1d6861 (patch)
tree75a5e7b73594e643a1f8ca870bcc4fe679bfb610 /lib/Kconfig.debug
parent2a18da7a9c7886f1c7307f8d3f23f24318583f03 (diff)
downloadlinux-468a9428521e7d00fb21250af363eb94dc1d6861.tar.xz
<linux/hash.h>: Add support for architecture-specific functions
This is just the infrastructure; there are no users yet. This is modelled on CONFIG_ARCH_RANDOM; a CONFIG_ symbol declares the existence of <asm/hash.h>. That file may define its own versions of various functions, and define HAVE_* symbols (no CONFIG_ prefix!) to suppress the generic ones. Included is a self-test (in lib/test_hash.c) that verifies the basics. It is NOT in general required that the arch-specific functions compute the same thing as the generic, but if a HAVE_* symbol is defined with the value 1, then equality is tested. Signed-off-by: George Spelvin <linux@sciencehorizons.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: Andreas Schwab <schwab@linux-m68k.org> Cc: Philippe De Muyter <phdm@macq.eu> Cc: linux-m68k@lists.linux-m68k.org Cc: Alistair Francis <alistai@xilinx.com> Cc: Michal Simek <michal.simek@xilinx.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: uclinux-h8-devel@lists.sourceforge.jp
Diffstat (limited to 'lib/Kconfig.debug')
-rw-r--r--lib/Kconfig.debug11
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 1e9a607534ca..18ec69ba8eb6 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1815,6 +1815,17 @@ config TEST_RHASHTABLE
If unsure, say N.
+config TEST_HASH
+ tristate "Perform selftest on hash functions"
+ default n
+ help
+ Enable this option to test the kernel's integer (<linux/hash,h>)
+ and string (<linux/stringhash.h>) hash functions on boot
+ (or module load).
+
+ This is intended to help people writing architecture-specific
+ optimized versions. If unsure, say N.
+
endmenu # runtime tests
config PROVIDE_OHCI1394_DMA_INIT