On 2015/11/5 9:48, Wangnan (F) wrote:
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.
Nothing losted...
You won't see this after 4/4. However, I can fix this "Unknown error 4006"
reporting in this patch.
Thank you.
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