* [PATCH v2] bpf: Update sysctl documentation to list all supported architectures
@ 2017-08-17 10:30 Michael Ellerman
2017-08-17 11:50 ` Daniel Borkmann
2017-08-17 17:09 ` David Miller
0 siblings, 2 replies; 4+ messages in thread
From: Michael Ellerman @ 2017-08-17 10:30 UTC (permalink / raw)
To: ast, daniel; +Cc: davem, netdev, linux-kernel
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
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH v2] bpf: Update sysctl documentation to list all supported architectures
2017-08-17 10:30 [PATCH v2] bpf: Update sysctl documentation to list all supported architectures Michael Ellerman
@ 2017-08-17 11:50 ` Daniel Borkmann
2017-08-18 1:27 ` Michael Ellerman
2017-08-17 17:09 ` David Miller
1 sibling, 1 reply; 4+ messages in thread
From: Daniel Borkmann @ 2017-08-17 11:50 UTC (permalink / raw)
To: Michael Ellerman, ast; +Cc: davem, netdev, linux-kernel
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>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v2] bpf: Update sysctl documentation to list all supported architectures
2017-08-17 11:50 ` Daniel Borkmann
@ 2017-08-18 1:27 ` Michael Ellerman
0 siblings, 0 replies; 4+ messages in thread
From: Michael Ellerman @ 2017-08-18 1:27 UTC (permalink / raw)
To: Daniel Borkmann, ast; +Cc: davem, netdev, linux-kernel
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
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v2] bpf: Update sysctl documentation to list all supported architectures
2017-08-17 10:30 [PATCH v2] bpf: Update sysctl documentation to list all supported architectures Michael Ellerman
2017-08-17 11:50 ` Daniel Borkmann
@ 2017-08-17 17:09 ` David Miller
1 sibling, 0 replies; 4+ messages in thread
From: David Miller @ 2017-08-17 17:09 UTC (permalink / raw)
To: mpe; +Cc: ast, daniel, netdev, linux-kernel
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.
^ permalink raw reply [flat|nested] 4+ messages in thread
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2017-08-17 10:30 [PATCH v2] bpf: Update sysctl documentation to list all supported architectures Michael Ellerman
2017-08-17 11:50 ` Daniel Borkmann
2017-08-18 1:27 ` Michael Ellerman
2017-08-17 17:09 ` David Miller
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