Em Tue, Sep 27, 2016 at 11:40:26AM -0700, Masami Hiramatsu escreveu: > On Tue, 27 Sep 2016 10:55:38 -0300 > Arnaldo Carvalho de Melo <a...@kernel.org> wrote: > > > Masami, > > > > Testing something else (event aliases/JSON) I saw the many sdt > > events available via 'perf list', decided to use the usual workflow, > > failed, what am I doing wrong? > > No, that is not supported yet. So I dropped perf-list support from > the latest series...
Ok, I guess I recall that discussion, will add some warning about that in the 'perf list' output. - Arnaldo > https://lkml.org/lkml/2016/7/1/133 > > The unresolved problems are > - how we treat sdt events after recorded? remove or leave it as tracepoint? > - what should be done if we found the tracepoint which has same name of the > SDT. (we can not reserve tracepoint name beforehand) > - Sometimes SDT name can be conflict, even on same binary. > > > > > > > > [root@jouet ~]# perf list sdt_qemu:pci* > > > > List of pre-defined events (to be used in -e): > > > > sdt_qemu:pci_cfg_read [SDT event] > > sdt_qemu:pci_cfg_write [SDT event] > > sdt_qemu:pci_update_mappings_add [SDT event] > > sdt_qemu:pci_update_mappings_del [SDT event] > > [root@jouet ~]# perf record -e sdt_qemu:pci* -a > > event syntax error: 'sdt_qemu:pci*' > > \___ unknown tracepoint > > > > Error: File /sys/kernel/debug/tracing/events/sdt_qemu/pci* not found. > > Hint: Perhaps this kernel misses some CONFIG_ setting to enable this > > feature?. > > > > 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@jouet ~]# > > > -- > Masami Hiramatsu <mhira...@kernel.org>
