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kernel: use timing functions to gather thread runtime stats

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This uses the timing functions to gather execution cycles of
threads. This provides greater details if arch/SoC/board
uses timer with higher resolution.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This commit is contained in:
Daniel Leung 2020-10-14 12:17:12 -07:00 • committed by Anas Nashif
commit fd7a68dbe9
4 changed files with 48 additions and 2 deletions
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12
include/kernel.h
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@ -19,6 +19,10 @@
#include <stdbool.h>
#include <toolchain.h>
#ifdef CONFIG_THREAD_RUNTIME_STATS_USE_TIMING_FUNCTIONS
#include <timing/timing.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
@ -283,14 +287,22 @@ struct z_poller {
#ifdef CONFIG_THREAD_RUNTIME_STATS
struct k_thread_runtime_stats {
/* Thread execution cycles */
#ifdef CONFIG_THREAD_RUNTIME_STATS_USE_TIMING_FUNCTIONS
timing_t execution_cycles;
#else
uint64_t execution_cycles;
#endif
};
typedef struct k_thread_runtime_stats k_thread_runtime_stats_t;
struct _thread_runtime_stats {
/* Timestamp when last switched in */
#ifdef CONFIG_THREAD_RUNTIME_STATS_USE_TIMING_FUNCTIONS
timing_t last_switched_in;
#else
uint32_t last_switched_in;
#endif
k_thread_runtime_stats_t stats;
};