• Masami Hiramatsu's avatar
    tracing: Ftrace dynamic ftrace_event_call support · bd1a5c84
    Masami Hiramatsu authored
    Add dynamic ftrace_event_call support to ftrace. Trace engines can add
    new ftrace_event_call to ftrace on the fly. Each operator function of
    the call takes an ftrace_event_call data structure as an argument,
    because these functions may be shared among several ftrace_event_calls.
    Changes from v13:
     - Define remove_subsystem_dir() always (revirt a2ca5e03), because
       trace_remove_event_call() uses it.
     - Modify syscall tracer because of ftrace_event_call change.
    [fweisbec@gmail.com: Fixed conflict against latest tracing/core]
    Signed-off-by: default avatarMasami Hiramatsu <mhiramat@redhat.com>
    Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
    Cc: Avi Kivity <avi@redhat.com>
    Cc: Andi Kleen <ak@linux.intel.com>
    Cc: Christoph Hellwig <hch@infradead.org>
    Cc: Frank Ch. Eigler <fche@redhat.com>
    Cc: H. Peter Anvin <hpa@zytor.com>
    Cc: Ingo Molnar <mingo@elte.hu>
    Cc: Jason Baron <jbaron@redhat.com>
    Cc: Jim Keniston <jkenisto@us.ibm.com>
    Cc: K.Prasad <prasad@linux.vnet.ibm.com>
    Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
    Cc: Li Zefan <lizf@cn.fujitsu.com>
    Cc: Przemysław Pawełczyk <przemyslaw@pawelczyk.it>
    Cc: Roland McGrath <roland@redhat.com>
    Cc: Sam Ravnborg <sam@ravnborg.org>
    Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
    Cc: Steven Rostedt <rostedt@goodmis.org>
    Cc: Tom Zanussi <tzanussi@gmail.com>
    Cc: Vegard Nossum <vegard.nossum@gmail.com>
    LKML-Reference: <20090813203453.31965.71901.stgit@localhost.localdomain>
    Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
trace_syscalls.c 12 KB