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Date: Tue, 13 May 2014 20:29:14 -0700 From: Alexei Starovoitov <ast@...mgrid.com> To: Steven Rostedt <rostedt@...dmis.org> Cc: Ingo Molnar <mingo@...nel.org>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Daniel Borkmann <dborkman@...hat.com>, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Arnaldo Carvalho de Melo <acme@...radead.org>, Jiri Olsa <jolsa@...hat.com>, Thomas Gleixner <tglx@...utronix.de>, "H. Peter Anvin" <hpa@...or.com>, Network Development <netdev@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH RFC net-next] tracing: accelerate tracing filters with BPF On Tue, May 13, 2014 at 8:17 PM, Steven Rostedt <rostedt@...dmis.org> wrote: > On Tue, 13 May 2014 19:55:11 -0700 > Alexei Starovoitov <ast@...mgrid.com> wrote: > >> Tracing filters are parsing user supplied character string and constructing >> a predicate tree. filter_match_preds() was used to walk nodes of the tree to >> simulate matching of boolean expression. >> > > I applied this on top of net-next, from: > > git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git > (master branch) > > and got this compile error: Sorry I wasn't clear in the log. This patch depends on JIT patches that were posted separately. Since this one is RFC, I didn't want to mix them. JIT patches: http://patchwork.ozlabs.org/patch/348558/ http://patchwork.ozlabs.org/patch/348559/ http://patchwork.ozlabs.org/patch/348560/ > kernel/trace/trace_events_filter.c: In function ‘emit_cond’: > kernel/trace/trace_events_filter.c:1361:36: error: ‘__bpf_call_base’ undeclared (first use in this function) > kernel/trace/trace_events_filter.c:1361:36: note: each undeclared identifier is reported only once for each function it appears in > kernel/trace/trace_events_filter.c: In function ‘filter_gen_bpf’: > kernel/trace/trace_events_filter.c:1622:2: error: implicit declaration of function ‘bpf_int_jit_compile’ [-Werror=implicit-function-declaration] > > Config attached. > > -- Steve -- 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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