linux-kernel - Re: [PATCH] perf bpf skels: vmlinux.h uses bpf.h and perf

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Message-ID: <427c2d97-64bb-ab0d-77d6-547bd73947d5@huawei.com>
Date:   Wed, 10 May 2023 14:47:51 +0800
From:   Yang Jihong <yangjihong1@...wei.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
CC:     <peterz@...radead.org>, <mingo@...hat.com>, <mark.rutland@....com>,
        <alexander.shishkin@...ux.intel.com>, <jolsa@...nel.org>,
        <namhyung@...nel.org>, <irogers@...gle.com>,
        <adrian.hunter@...el.com>, <linux-perf-users@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] perf bpf skels: vmlinux.h uses bpf.h and perf_event.h in
 the source directory

Hello,

On 2023/5/10 2:21, Arnaldo Carvalho de Melo wrote:
> Em Tue, May 09, 2023 at 06:36:49AM +0000, Yang Jihong escreveu:
>> Currently, vmlinux.h uses the bpf.h and perf_event.h header files in the
>> system path. If the header files in compilation environment are old,
>> compilation may fail. For example:
>>
>>    /home/yangjihong/linux/tools/perf/util/bpf_skel/.tmp/../vmlinux.h:151:27: error: field has incomplete type 'union perf_sample_weight'
>>            union perf_sample_weight weight;
> 
> 
> Can this be solved in the Makefile directives for building BPF targets?
> 
OK, will send v2 patch, use Makefile to specify path of header file that 
is preferentially used. Pls check whether the solution is OK.

Thanks,
Yang