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Groups > linux.kernel > #1713800 > unrolled thread
| Started by | Michael Ellerman <mpe@ellerman.id.au> |
|---|---|
| First post | 2017-08-17 12:40 +0200 |
| Last post | 2017-08-17 19:20 +0200 |
| Articles | 4 — 3 participants |
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[PATCH v2] bpf: Update sysctl documentation to list all supported architectures Michael Ellerman <mpe@ellerman.id.au> - 2017-08-17 12:40 +0200
Re: [PATCH v2] bpf: Update sysctl documentation to list all supported architectures Daniel Borkmann <daniel@iogearbox.net> - 2017-08-17 14:00 +0200
Re: [PATCH v2] bpf: Update sysctl documentation to list all supported architectures Michael Ellerman <mpe@ellerman.id.au> - 2017-08-18 03:30 +0200
Re: [PATCH v2] bpf: Update sysctl documentation to list all supported architectures David Miller <davem@davemloft.net> - 2017-08-17 19:20 +0200
| From | Michael Ellerman <mpe@ellerman.id.au> |
|---|---|
| Date | 2017-08-17 12:40 +0200 |
| Subject | [PATCH v2] bpf: Update sysctl documentation to list all supported architectures |
| Message-ID | <ufqnv-3zF-5@gated-at.bofh.it> |
The sysctl documentation states that the JIT is only available on x86_64, which is no longer correct. Update the list, and break it out to indicate which architectures support the cBPF JIT (via HAVE_CBPF_JIT) or the eBPF JIT (HAVE_EBPF_JIT). Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> --- Documentation/sysctl/net.txt | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) v2: Split the list based on cBPF vs eBPF. diff --git a/Documentation/sysctl/net.txt b/Documentation/sysctl/net.txt index 14db18c970b1..b9c3c6078010 100644 --- a/Documentation/sysctl/net.txt +++ b/Documentation/sysctl/net.txt @@ -36,8 +36,23 @@ bpf_jit_enable -------------- This enables Berkeley Packet Filter Just in Time compiler. -Currently supported on x86_64 architecture, bpf_jit provides a framework -to speed packet filtering, the one used by tcpdump/libpcap for example. + +There are two flavors of JIT, the new eBPF JIT supported on: + - x86_64 + - arm64 + - ppc64 + - sparc64 + - mips64 + +And the older cBPF JIT supported on: + - arm + - mips + - ppc + - sparc + +The BPF JIT provides a framework to speed packet filtering, the one used by +tcpdump/libpcap for example. + Values : 0 - disable the JIT (default value) 1 - enable the JIT -- 2.7.4
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| From | Daniel Borkmann <daniel@iogearbox.net> |
|---|---|
| Date | 2017-08-17 14:00 +0200 |
| Subject | Re: [PATCH v2] bpf: Update sysctl documentation to list all supported architectures |
| Message-ID | <ufrCX-4m1-47@gated-at.bofh.it> |
| In reply to | #1713800 |
On 08/17/2017 12:30 PM, Michael Ellerman wrote: > The sysctl documentation states that the JIT is only available on > x86_64, which is no longer correct. > > Update the list, and break it out to indicate which architectures > support the cBPF JIT (via HAVE_CBPF_JIT) or the eBPF JIT > (HAVE_EBPF_JIT). > > Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> The last paragraph speaking about tcpdump, I can take care of later, also given the patch is about updating list of archs, so lgtm, thanks! Acked-by: Daniel Borkmann <daniel@iogearbox.net>
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| From | Michael Ellerman <mpe@ellerman.id.au> |
|---|---|
| Date | 2017-08-18 03:30 +0200 |
| Message-ID | <ufEgO-4CU-1@gated-at.bofh.it> |
| In reply to | #1713890 |
Daniel Borkmann <daniel@iogearbox.net> writes: > On 08/17/2017 12:30 PM, Michael Ellerman wrote: >> The sysctl documentation states that the JIT is only available on >> x86_64, which is no longer correct. >> >> Update the list, and break it out to indicate which architectures >> support the cBPF JIT (via HAVE_CBPF_JIT) or the eBPF JIT >> (HAVE_EBPF_JIT). >> >> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> > > The last paragraph speaking about tcpdump, I can take care of > later, also given the patch is about updating list of archs, so > lgtm, thanks! Thanks. cheers
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| From | David Miller <davem@davemloft.net> |
|---|---|
| Date | 2017-08-17 19:20 +0200 |
| Subject | Re: [PATCH v2] bpf: Update sysctl documentation to list all supported architectures |
| Message-ID | <ufwCC-7Vp-25@gated-at.bofh.it> |
| In reply to | #1713800 |
From: Michael Ellerman <mpe@ellerman.id.au> Date: Thu, 17 Aug 2017 20:30:39 +1000 > The sysctl documentation states that the JIT is only available on > x86_64, which is no longer correct. > > Update the list, and break it out to indicate which architectures > support the cBPF JIT (via HAVE_CBPF_JIT) or the eBPF JIT > (HAVE_EBPF_JIT). > > Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Applied, thanks Michael.
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