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| author | Gregory Nutt <gnutt@nuttx.org> | 2014-02-22 15:20:12 -0600 |
|---|---|---|
| committer | Gregory Nutt <gnutt@nuttx.org> | 2014-02-22 15:20:12 -0600 |
| commit | d75e62056261d8f75ec5b1b4fb9fd61d4768c163 (patch) | |
| tree | 09a09c84a6490999f87162b2973d64ce0f0941f8 /nuttx/include/nuttx/clock.h | |
| parent | b28a177cf7e0fb330a25c67b81fd3027ce72171d (diff) | |
| download | nuttx-d75e62056261d8f75ec5b1b4fb9fd61d4768c163.tar.gz nuttx-d75e62056261d8f75ec5b1b4fb9fd61d4768c163.tar.bz2 nuttx-d75e62056261d8f75ec5b1b4fb9fd61d4768c163.zip | |
Add logic to meaure and calculate the CPU load percentage. From David Alessio
Diffstat (limited to 'nuttx/include/nuttx/clock.h')
| -rw-r--r-- | nuttx/include/nuttx/clock.h | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/nuttx/include/nuttx/clock.h b/nuttx/include/nuttx/clock.h index e640ecd2e..d0fd9220f 100644 --- a/nuttx/include/nuttx/clock.h +++ b/nuttx/include/nuttx/clock.h @@ -1,7 +1,7 @@ /**************************************************************************** * include/nuttx/clock.h * - * Copyright (C) 2007-2009, 2011-2012 Gregory Nutt. All rights reserved. + * Copyright (C) 2007-2009, 2011-2012, 2014 Gregory Nutt. All rights reserved. * Author: Gregory Nutt <gnutt@nuttx.org> * * Redistribution and use in source and binary forms, with or without @@ -47,7 +47,7 @@ #include <nuttx/compiler.h> /**************************************************************************** - * Pro-processor Definitions + * Pre-processor Definitions ****************************************************************************/ /* Configuration ************************************************************/ /* Efficient, direct access to OS global timer variables will be supported @@ -122,7 +122,20 @@ #define TICK2SEC(tick) (((tick)+(TICK_PER_SEC/2))/TICK_PER_SEC) /* Rounds */ /**************************************************************************** - * Global Data + * Public Types + ****************************************************************************/ +/* This structure is used when CONFIG_SCHED_CPULOAD to sample CPU usage */ + +#ifdef CONFIG_SCHED_CPULOAD +struct cpuload_s +{ + volatile uint32_t cnt; /* Total number of clock ticks */ + volatile uint32_t idle; /* Total number of clocks ticks with CPU IDLE */ +}; +#endif + +/**************************************************************************** + * Public Data ****************************************************************************/ #if !defined(CONFIG_DISABLE_CLOCK) @@ -149,8 +162,15 @@ extern volatile uint32_t g_system_timer; # endif #endif +/* CPU Load Measurements ***************************************************/ +/* This structure is used when CONFIG_SCHED_CPULOAD to sample CPU usage */ + +#ifdef CONFIG_SCHED_CPULOAD +extern volatile struct cpuload_s g_cpuload; +#endif + /**************************************************************************** - * Global Function Prototypes + * Public Function Prototypes ****************************************************************************/ #ifdef __cplusplus |