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| author | Mircea Gherzan <mgherzan@gmail.com> | 2012-03-16 16:37:12 +0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-03-24 13:38:56 +0400 |
| commit | ddecdfcea0ae891f782ae853771c867ab51024c2 (patch) | |
| tree | bf344a86217258b88425834ef513585d71f58861 /arch/arm/Kconfig | |
| parent | 09f05d8529ff4aa92311c1a55ce35ac98cb59b8c (diff) | |
| download | linux-ddecdfcea0ae891f782ae853771c867ab51024c2.tar.xz | |
ARM: 7259/3: net: JIT compiler for packet filters
Based of Matt Evans's PPC64 implementation.
The compiler generates ARM instructions but interworking is
supported for Thumb2 kernels.
Supports both little and big endian. Unaligned loads are emitted
for ARMv6+. Not all the BPF opcodes that deal with ancillary data
are supported. The scratch memory of the filter lives on the stack.
Hardware integer division is used if it is available.
Enabled in the same way as for x86-64 and PPC64:
echo 1 > /proc/sys/net/core/bpf_jit_enable
A value greater than 1 enables opcode output.
Signed-off-by: Mircea Gherzan <mgherzan@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/Kconfig')
| -rw-r--r-- | arch/arm/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index ee6c7154c9a1..746ab6d6a205 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -34,6 +34,7 @@ config ARM select GENERIC_IRQ_SHOW select CPU_PM if (SUSPEND || CPU_IDLE) select GENERIC_PCI_IOMAP + select HAVE_BPF_JIT help The ARM series is a line of low-power-consumption RISC chip designs licensed by ARM Ltd and targeted at embedded applications and |