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Date: Tue, 09 Jun 2015 17:28:45 -0700 From: Alexei Starovoitov <ast@...mgrid.com> To: "Wangnan (F)" <wangnan0@...wei.com>, acme@...nel.org, brendan.d.gregg@...il.com, daniel@...earbox.net, namhyung@...nel.org, masami.hiramatsu.pt@...achi.com, paulus@...ba.org, a.p.zijlstra@...llo.nl, mingo@...hat.com, jolsa@...nel.org, dsahern@...il.com CC: linux-kernel@...r.kernel.org, lizefan@...wei.com, hekuang@...wei.com, xiakaixu@...wei.com, pi3orama@....com Subject: Re: [RFC PATCH v6 24/32] perf record: Compile scriptlets if pass '.c' to --event On 6/9/15 5:06 PM, Wangnan (F) wrote: > > > On 2015/6/10 5:48, Alexei Starovoitov wrote: >> On 6/8/15 10:50 PM, Wang Nan wrote: >>> +struct bpf_param bpf_param = { >>> + .clang_path = "clang", >>> + .llc_path = "llc", >>> + .clang_opt = "", >>> + .llc_opt = "", >>> +}; >> >> the defaults are ok-ish, but llc is never in PATH. >> So most likely it won't work out of the box. >> I think the cleanest option is too wait a little bit >> until we finish clang integration. >> (hopefully few more days) >> >> we've quite been busy on llvm side >> and I'm excited to announce that BPF backend finally >> graduated from experimental. >> So now anyone can just pull the latest llvm and >> bpf will be present by default. >> No more cmake -DLLVM_EXPERIMENTAL... >> >> Once clang integration is complete. One can pull >> upsteam llvm and clang and just use 'clang -O2 -c -march=bpf file.c' >> > > Good news, so llc part should be removed. > > Next version I'd like to use following config options: > > [llvm] > clang-bpf-cmd-template = "$CLANG_EXEC $CLANG_OPTIONS -c > $CLANG_SOURCE -emit-llvm -O2 -o - | /path/to/llc -march=bpf > -filetype=obj -o -" > clang-path = "/path/to/clang" > clang-opt = "" yes. that's better. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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