From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754266Ab3G3Lbz (ORCPT ); Tue, 30 Jul 2013 07:31:55 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:11008 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751193Ab3G3Lby (ORCPT ); Tue, 30 Jul 2013 07:31:54 -0400 X-Authority-Analysis: v=2.0 cv=P6i4d18u c=1 sm=0 a=Sro2XwOs0tJUSHxCKfOySw==:17 a=Drc5e87SC40A:10 a=Ciwy3NGCPMMA:10 a=zeJKfhYyRjAA:10 a=5SG0PmZfjMsA:10 a=bbbx4UPp9XUA:10 a=meVymXHHAAAA:8 a=KGjhK52YXX0A:10 a=-1BqoTeSDHMA:10 a=VwQbUJbxAAAA:8 a=Ye5qyIouRdA9wprJUcgA:9 a=Sro2XwOs0tJUSHxCKfOySw==:117 X-Cloudmark-Score: 0 X-Authenticated-User: X-Originating-IP: 67.255.60.225 Message-Id: <20130730112718.273490378@goodmis.org> User-Agent: quilt/0.60-1 Date: Tue, 30 Jul 2013 07:27:18 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Frederic Weisbecker , Andrew Morton , Masami Hiramatsu , Oleg Nesterov Subject: [for-next-3.11][PATCH 0/8] ftrace/tracing: Event file fixes and ftrace function hash fixes Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Oleg has been continuing his work on fixing a race between opening an event file and deleting that same event. Using the i_private and event_mutex to verify that the event still exists to solve the race. A long standing bug on the ftrace hash accounting has finally been figured out. When tracing a module that is removed and then reloaded, the function filter hash gets out of sync with the function record's ref count which causes a nasty warning and disabling of the function tracer. git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git for-next Head SHA1: 6fd52fce057b55cc1bba463e6f05536a76c058b4 Oleg Nesterov (6): tracing: Turn event/id->i_private into call->event.type tracing: Change event_enable/disable_read() to verify i_private != NULL tracing: Change event_filter_read/write to verify i_private != NULL tracing: Change f_start() to take event_mutex and verify i_private != NULL tracing: Introduce remove_event_file_dir() tracing: Change remove_event_file_dir() to clear "d_subdirs"->i_private Steven Rostedt (Red Hat) (2): ftrace: Consolidate some duplicate code for updating ftrace ops ftrace: Clear module traced functions on unload module ---- kernel/trace/ftrace.c | 76 +++++++++++++++-- kernel/trace/trace_events.c | 159 ++++++++++++++++++++---------------- kernel/trace/trace_events_filter.c | 17 ++-- 3 files changed, 164 insertions(+), 88 deletions(-)