tools/bpf: fix perf build error with uClibc (seen on ARC)

[linux-2.6-microblaze.git] / lib / Kconfig

diff --git a/lib/Kconfig b/lib/Kconfig
index a9e5653..ac1fcf0 100644 (file)
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -18,6 +18,23 @@ config RAID6_PQ_BENCHMARK
          Benchmark all available RAID6 PQ functions on init and choose the
          fastest one.
 
+config PACKING
+       bool "Generic bitfield packing and unpacking"
+       default n
+       help
+         This option provides the packing() helper function, which permits
+         converting bitfields between a CPU-usable representation and a
+         memory representation that can have any combination of these quirks:
+           - Is little endian (bytes are reversed within a 32-bit group)
+           - The least-significant 32-bit word comes first (within a 64-bit
+             group)
+           - The most significant bit of a byte is at its right (bit 0 of a
+             register description is numerically 2^7).
+         Drivers may use these helpers to match the bit indices as described
+         in the data sheets of the peripherals they are in control of.
+
+         When in doubt, say N.
+
 config BITREVERSE
        tristate