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Date: Thu, 5 Nov 2015 09:48:03 +0800 From: "Wangnan (F)" <wangnan0@...wei.com> To: Arnaldo Carvalho de Melo <acme@...nel.org> CC: <namhyung@...nel.org>, <lizefan@...wei.com>, <pi3orama@....com>, <linux-kernel@...r.kernel.org> Subject: Re: [PATCH v2 3/4] bpf tools: Improve libbpf error reporting On 2015/11/5 6:01, Arnaldo Carvalho de Melo wrote: > Em Wed, Nov 04, 2015 at 02:25:58AM +0000, Wang Nan escreveu: >> In this patch, a series libbpf specific error numbers and >> libbpf_strerror() are created to help reporting error to caller. >> Functions are updated to pass correct error number through macro >> CHECK_ERR(). >> >> All users of bpf_object__open{_buffer}() and bpf_program__title() >> in perf are modified accordingly. > So, before I get: > > [root@zoo ~]# perf record -e /tmp/foo.o sleep 1 > event syntax error: '/tmp/foo.o' > \___ Invalid argument: Are you root and runing a CONFIG_BPF_SYSCALL kernel? > > (add -v to see detail) > Run 'perf list' for a list of valid events > > Usage: perf record [<options>] [<command>] > or: perf record [<options>] -- <command> [<options>] > > -e, --event <event> event selector. use 'perf list' to list available events > > > And now: > > [root@zoo ~]# perf record -e /tmp/foo.o sleep 1 > event syntax error: '/tmp/foo.o' > \___ Unknown error 4006 > > (add -v to see detail) > Run 'perf list' for a list of valid events > > Usage: perf record [<options>] [<command>] > or: perf record [<options>] -- <command> [<options>] > > -e, --event <event> event selector. use 'perf list' to list available events > [root@zoo ~]# > > Can you please fix this? The relevant strerror() routine should know about the > errors it handles and produce an informative message. > > - Arnaldo > An libbpf related patches are losted because yesterday I didn't know your head. Today I'd like to merge my two patchsets and send them to you together. Thank you. -- 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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