From: Oleg Nesterov Date: Fri, 26 Jul 2013 17:25:32 +0000 (+0200) Subject: tracing: Turn event/id->i_private into call->event.type X-Git-Tag: v3.11-rc5~28^2~16 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1a11126bcb7c93c289bf3218fa546fd3b0c0df8b;p=pandora-kernel.git tracing: Turn event/id->i_private into call->event.type event_id_read() is racy, ftrace_event_call can be already freed by trace_remove_event_call() callers. Change event_create_dir() to pass "data = call->event.type", this is all event_id_read() needs. ftrace_event_id_fops no longer needs tracing_open_generic(). We add the new helper, event_file_data(), to read ->i_private, it will have more users. Note: currently ACCESS_ONCE() and "id != 0" check are not needed, but we are going to change event_remove/rmdir to clear ->i_private. Link: http://lkml.kernel.org/r/20130726172532.GA3605@redhat.com Reviewed-by: Masami Hiramatsu Signed-off-by: Oleg Nesterov Signed-off-by: Steven Rostedt --- Reading git-diff-tree failed