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docs: need CONFIG_BPF_EVENTS for bpf features judging

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This commit is contained in:
mzz2017 2023-03-21 16:07:56 +08:00
parent 950e446183
commit 40bcbd6c9b
2 changed files with 4 additions and 1 deletions
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2
control/bpf_utils.go
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@ -213,6 +213,8 @@ retryLoadBpf:
err = fmt.Errorf("%w: you should re-compile linux kernel with BTF configurations; see docs for more information", err) err = fmt.Errorf("%w: you should re-compile linux kernel with BTF configurations; see docs for more information", err)
} else if strings.Contains(err.Error(), "unknown func bpf_trace_printk") { } else if strings.Contains(err.Error(), "unknown func bpf_trace_printk") {
err = fmt.Errorf(`%w: please try to compile dae without bpf_printk; example of cross-compilation to arm64: make GOARCH=arm64 CGO_ENABLED=0 CFLAGS="-D__REMOVE_BPF_PRINTK"`, err) err = fmt.Errorf(`%w: please try to compile dae without bpf_printk; example of cross-compilation to arm64: make GOARCH=arm64 CGO_ENABLED=0 CFLAGS="-D__REMOVE_BPF_PRINTK"`, err)
} else if strings.Contains(err.Error(), "unknown func bpf_probe_read") {
err = fmt.Errorf(`%w: please re-compile linux kernel with CONFIG_BPF_EVENTS=y"`, err)
} }
return err return err
} }

3
docs/getting-started/README.md
View File

@ -38,6 +38,7 @@ zcat /proc/config.gz || cat /boot/{config,config-$(uname -r)}
dae needs: dae needs:
``` ```
CONFIG_DEBUG_INFO_BTF=y CONFIG_DEBUG_INFO_BTF=y
CONFIG_BPF_EVENTS=y
CONFIG_NET_CLS_ACT=y CONFIG_NET_CLS_ACT=y
CONFIG_NET_SCH_INGRESS=m CONFIG_NET_SCH_INGRESS=m
CONFIG_NET_INGRESS=y CONFIG_NET_INGRESS=y
@ -46,7 +47,7 @@ CONFIG_NET_EGRESS=y
Check them using command like: Check them using command like:
```shell ```shell
(zcat /proc/config.gz || cat /boot/{config,config-$(uname -r)}) | grep -E 'CONFIG_(DEBUG_INFO_BTF|NET_CLS_ACT|NET_SCH_INGRESS|NET_INGRESS|NET_EGRESS)=' (zcat /proc/config.gz || cat /boot/{config,config-$(uname -r)}) | grep -E 'CONFIG_(DEBUG_INFO_BTF|CONFIG_BPF_EVENTS|NET_CLS_ACT|NET_SCH_INGRESS|NET_INGRESS|NET_EGRESS)='
``` ```
> **Note** > **Note**