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Date: Sun, 09 Mar 2014 07:45:53 -0700 From: Eric Dumazet <eric.dumazet@...il.com> To: Alexei Starovoitov <ast@...mgrid.com> Cc: "David S. Miller" <davem@...emloft.net>, Daniel Borkmann <dborkman@...hat.com>, Ingo Molnar <mingo@...nel.org>, Will Drewry <wad@...omium.org>, Steven Rostedt <rostedt@...dmis.org>, Peter Zijlstra <a.p.zijlstra@...llo.nl>, "H. Peter Anvin" <hpa@...or.com>, Hagen Paul Pfeifer <hagen@...u.net>, Jesse Gross <jesse@...ira.com>, Thomas Gleixner <tglx@...utronix.de>, Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>, Tom Zanussi <tom.zanussi@...ux.intel.com>, Jovi Zhangwei <jovi.zhangwei@...il.com>, Eric Dumazet <edumazet@...gle.com>, Linus Torvalds <torvalds@...ux-foundation.org>, Andrew Morton <akpm@...ux-foundation.org>, Frederic Weisbecker <fweisbec@...il.com>, Arnaldo Carvalho de Melo <acme@...radead.org>, Pekka Enberg <penberg@....fi>, Arjan van de Ven <arjan@...radead.org>, Christoph Hellwig <hch@...radead.org>, linux-kernel@...r.kernel.org, netdev@...r.kernel.org Subject: Re: [PATCH v7 net-next 1/3] filter: add Extended BPF interpreter and converter On Sat, 2014-03-08 at 15:15 -0800, Alexei Starovoitov wrote: > +/** > + * sk_run_filter_ext - run an extended filter > + * @ctx: buffer to run the filter on > + * @insn: filter to apply > + * > + * Decode and execute extended BPF instructions. > + * @ctx is the data we are operating on. > + * @filter is the array of filter instructions. > + */ > +notrace u32 sk_run_filter_ext(void *ctx, const struct sock_filter_ext *insn) > +{ > + u64 stack[64]; > + u64 regs[16]; > + void *ptr; > + u64 tmp; > + int off; Why is this 'notrace' ? 80 u64 on the stack, that is 640 bytes to run a filter ???? -- 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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