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timing: add kconfig CONFIG_TIMING_FUNCTIONS_NEED_AT_BOOT

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This adds a new kconfig CONFIG_TIMING_FUNCTIONS_NEED_AT_BOOT so
that the timing subsystem can be initialized at boot, instead of
being #ifdef under thread runtime statistics. This will allow
other part of kernel and other subsystems to utilize the timing
functions.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This commit is contained in:
Daniel Leung 2021-03-31 13:40:01 -07:00 • committed by Anas Nashif
commit 1559712b22
3 changed files with 13 additions and 2 deletions
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2
kernel/Kconfig
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@ -369,7 +369,7 @@ if THREAD_RUNTIME_STATS
config THREAD_RUNTIME_STATS_USE_TIMING_FUNCTIONS config THREAD_RUNTIME_STATS_USE_TIMING_FUNCTIONS
bool "Use timing functions to gather statistics" bool "Use timing functions to gather statistics"
select TIMING_FUNCTIONS select TIMING_FUNCTIONS_NEED_AT_BOOT
help help
Use timing functions to gather thread runtime statistics. Use timing functions to gather thread runtime statistics.

3
kernel/init.c
View file

@ -33,6 +33,7 @@
#include <stdbool.h> #include <stdbool.h>
#include <debug/gcov.h> #include <debug/gcov.h>
#include <kswap.h> #include <kswap.h>
#include <timing/timing.h>
#include <logging/log.h> #include <logging/log.h>
LOG_MODULE_REGISTER(os, CONFIG_KERNEL_LOG_LEVEL); LOG_MODULE_REGISTER(os, CONFIG_KERNEL_LOG_LEVEL);
@ -400,7 +401,7 @@ FUNC_NORETURN void z_cstart(void)
__stack_chk_guard <<= 8; __stack_chk_guard <<= 8;
#endif /* CONFIG_STACK_CANARIES */ #endif /* CONFIG_STACK_CANARIES */
#ifdef CONFIG_THREAD_RUNTIME_STATS_USE_TIMING_FUNCTIONS #ifdef CONFIG_TIMING_FUNCTIONS_NEED_AT_BOOT
timing_init(); timing_init();
timing_start(); timing_start();
#endif #endif

10
subsys/timing/Kconfig
View file

@ -7,3 +7,13 @@ config TIMING_FUNCTIONS
help help
When enabled, timing related functions are compiled. This is When enabled, timing related functions are compiled. This is
useful for gathering timing on code execution. useful for gathering timing on code execution.
config TIMING_FUNCTIONS_NEED_AT_BOOT
bool
select TIMING_FUNCTIONS
help
Hidden option to indicate that timing functions need to be
initialized at boot.
To be selected by kernel and other subsystems which need
to use timing functions.