Hosted/linux: Add process/cpu info screen to the debug menu.

The new menu is very helpful on RaaA, but also shown in the sim. It shows
the process cpu usage, process' time stats (user,sys,real) and the cpu
frequency stats.

It uses a thread to sample the data, however the thread is not created
until the menu is visited for the first time.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31364 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 45 insertions, 0 deletions

diff --git a/firmware/target/hosted/cpuinfo-linux.h b/firmware/target/hosted/cpuinfo-linux.h
new file mode 100644
index 0000000..d9ba376
--- /dev/null
+++ b/firmware/target/hosted/cpuinfo-linux.h
@@ -0,0 +1,45 @@
+/***************************************************************************
+ *             __________               __   ___.                  
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___  
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /  
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <   
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \  
+ *                     \/            \/     \/    \/            \/ 
+ * $Id$
+ *
+ * Copyright (C) 2011 Thomas Martitz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+
+#ifndef __CPUINFO_LINUX_H__
+#define __CPUINFO_LINUX_H__
+
+struct cpuusage {
+    long usage; /* in hundredth percent */
+    long utime; /* in clock ticks */
+    long stime; /* in clock ticks */
+    long rtime; /* in clock ticks */
+    long hz;    /* how clock ticks per second */
+};
+
+struct time_state {
+    long frequency;
+    long time;
+};
+
+int cpuusage_linux(struct cpuusage* u);
+int cpufrequency_linux(int cpu);
+int scalingfrequency_linux(int cpu);
+int cpustatetimes_linux(int cpu, struct time_state* data, int max_elements);
+int cpucount_linux(void);
+
+#endif /* __CPUINFO_LINUX_H__ */