linux-kernel - Re: [PATCH][RFC] tracing: Use class->reg() for all registering of events

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Message-ID: <20100609123530.GB9471@ghostprotocols.net>
Date:	Wed, 9 Jun 2010 09:35:30 -0300
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>
Subject: Re: [PATCH][RFC] tracing: Use class->reg() for all registering of
 events

Em Wed, Jun 09, 2010 at 09:23:38AM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Wed, Jun 09, 2010 at 09:02:24AM -0300, Arnaldo Carvalho de Melo escreveu:
> > > On Wed, 2010-06-09 at 17:17 +0530, Srikar Dronamraju wrote:
> > > > When ran gdb on the core, it showed me that it was dumping in
> > > > /usr/lib64/libnewt.so.0.52. in newtScaleSet function.
> > > > My newt lib was of version : newt-0.52.2-15
> 
> Can you please provide a backtrace? I think I know what the problem is,
> but I'm not managing to reproduce it here.
> 
> > > > I am now able to workaround the problem by uninstalling newt-devel.

If you can reinstall it and then try with the following patch, that is
the minimal for .35, I'd appreciate,

Thanks,

- Arnaldo

diff --git a/tools/perf/util/newt.c b/tools/perf/util/newt.c
index cf182ca..059b772 100644
--- a/tools/perf/util/newt.c
+++ b/tools/perf/util/newt.c
@@ -43,6 +43,12 @@ struct ui_progress *ui_progress__new(const char *title, u64 total)
 
 	if (self != NULL) {
 		int cols;
+		/*
+		 * FIXME: We should have a per UI backend way of showing
+		 * progress, stdio will just show a percentage as NN%, etc.
+		 */
+		if (use_browser <= 0)	
+			return self;
 		newtGetScreenSize(&cols, NULL);
 		cols -= 4;
 		newtCenteredWindow(cols, 1, title);
@@ -67,14 +73,18 @@ out_free_self:
 
 void ui_progress__update(struct ui_progress *self, u64 curr)
 {
+	if (use_browser <= 0)
+		return;
 	newtScaleSet(self->scale, curr);
 	newtRefresh();
 }
 
 void ui_progress__delete(struct ui_progress *self)
 {
-	newtFormDestroy(self->form);
-	newtPopWindow();
+	if (use_browser > 0) {
+		newtFormDestroy(self->form);
+		newtPopWindow();
+	}
 	free(self);
 }
 
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