From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1765548AbYEVEYA (ORCPT ); Thu, 22 May 2008 00:24:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751507AbYEVEXI (ORCPT ); Thu, 22 May 2008 00:23:08 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.123]:56981 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751351AbYEVEXE (ORCPT ); Thu, 22 May 2008 00:23:04 -0400 Message-Id: <20080522042301.934671762@goodmis.org> References: <20080522042215.584408893@goodmis.org> User-Agent: quilt/0.46-1 Date: Thu, 22 May 2008 00:22:18 -0400 From: Steven Rostedt To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, pq@iki.fi, proski@gnu.org, sandmann@redhat.com, a.p.zijlstra@chello.nl, Steven Rostedt Subject: [PATCH 3/5] ftrace: move ftrace_special to trace.c Content-Disposition: inline; filename=ftrace-move-ftrace-special-out-of-sched-switch.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Move the ftrace_special out of sched_switch to trace.c. Signed-off-by: Steven Rostedt --- kernel/trace/trace.c | 27 +++++++++++++++++++++++++-- kernel/trace/trace_sched_switch.c | 24 ------------------------ 2 files changed, 25 insertions(+), 26 deletions(-) Index: linux-tip.git/kernel/trace/trace.c =================================================================== --- linux-tip.git.orig/kernel/trace/trace.c 2008-05-21 21:32:23.000000000 -0400 +++ linux-tip.git/kernel/trace/trace.c 2008-05-21 23:19:55.000000000 -0400 @@ -983,6 +983,30 @@ tracing_sched_wakeup_trace(struct trace_ trace_wake_up(); } +void +ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3) +{ + struct trace_array *tr = &global_trace; + struct trace_array_cpu *data; + unsigned long flags; + long disabled; + int cpu; + + if (tracing_disabled || current_trace == &no_tracer || !tr->ctrl) + return; + + local_irq_save(flags); + cpu = raw_smp_processor_id(); + data = tr->data[cpu]; + disabled = atomic_inc_return(&data->disabled); + + if (likely(disabled == 1)) + __trace_special(tr, data, arg1, arg2, arg3); + + atomic_dec(&data->disabled); + local_irq_restore(flags); +} + #ifdef CONFIG_FTRACE static void function_trace_call(unsigned long ip, unsigned long parent_ip) @@ -2986,8 +3010,6 @@ __init static int tracer_alloc_buffers(v int ret = -ENOMEM; int i; - global_trace.ctrl = tracer_enabled; - /* TODO: make the number of buffers hot pluggable with CPUS */ tracing_nr_buffers = num_possible_cpus(); tracing_buffer_mask = cpu_possible_map; @@ -3057,6 +3079,7 @@ __init static int tracer_alloc_buffers(v current_trace = &no_tracer; /* All seems OK, enable tracing */ + global_trace.ctrl = tracer_enabled; tracing_disabled = 0; return 0; Index: linux-tip.git/kernel/trace/trace_sched_switch.c =================================================================== --- linux-tip.git.orig/kernel/trace/trace_sched_switch.c 2008-05-21 22:24:13.000000000 -0400 +++ linux-tip.git/kernel/trace/trace_sched_switch.c 2008-05-21 22:41:50.000000000 -0400 @@ -72,30 +72,6 @@ sched_switch_callback(void *probe_data, sched_switch_func(probe_data, __rq, prev, next); } -void -ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3) -{ - struct trace_array *tr = ctx_trace; - struct trace_array_cpu *data; - unsigned long flags; - long disabled; - int cpu; - - if (!tracer_enabled) - return; - - local_irq_save(flags); - cpu = raw_smp_processor_id(); - data = tr->data[cpu]; - disabled = atomic_inc_return(&data->disabled); - - if (likely(disabled == 1)) - __trace_special(tr, data, arg1, arg2, arg3); - - atomic_dec(&data->disabled); - local_irq_restore(flags); -} - static void sched_switch_reset(struct trace_array *tr) { int cpu; --