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debug: thread_analyzer: display privileged stack usage

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This adds the bits to display privileged stack usage for
architectures that support obtaining this information.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This commit is contained in:
Daniel Leung 2024-07-30 12:35:04 -07:00 committed by Anas Nashif
parent aa65842e95
commit d26b7d4ed1
3 changed files with 41 additions and 1 deletions
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8
include/zephyr/debug/thread_analyzer.h
View file

@ -39,6 +39,14 @@ struct thread_analyzer_info {
k_thread_runtime_stats_t usage;
#endif
#endif
#ifdef CONFIG_THREAD_ANALYZER_PRIV_STACK_USAGE
/** Total size of privileged stack */
size_t priv_stack_size;
/** Privileged stack size in used */
size_t priv_stack_used;
#endif
};
/** @brief Thread analyzer stack size callback function

7
subsys/debug/Kconfig
View file

@ -45,6 +45,13 @@ config THREAD_ANALYZER_ISR_STACK_USAGE
bool "Analyze interrupt stacks usage"
default y
config THREAD_ANALYZER_PRIV_STACK_USAGE
bool "Analyze privileged stacks usage"
depends on USERSPACE
depends on ARCH_HAS_THREAD_PRIV_STACK_SPACE_GET
help
Print privileged stack usage for user threads.
config THREAD_ANALYZER_RUN_UNLOCKED
bool "Run analysis with interrupts unlocked"
default y

27
subsys/debug/thread_analyzer.c
View file

@ -48,6 +48,18 @@ static void thread_print_cb(struct thread_analyzer_info *info)
info->stack_size, pcnt,
info->utilization);
#ifdef CONFIG_THREAD_ANALYZER_PRIV_STACK_USAGE
if (info->priv_stack_size > 0) {
pcnt = (info->priv_stack_used * 100U) / info->priv_stack_size;
THREAD_ANALYZER_PRINT(
THREAD_ANALYZER_FMT(
" %-20s: PRIV_STACK: unused %zu usage %zu / %zu (%zu %%)"),
" ", info->priv_stack_size - info->priv_stack_used, info->priv_stack_used,
info->priv_stack_size, pcnt);
}
#endif
#ifdef CONFIG_SCHED_THREAD_USAGE
THREAD_ANALYZER_PRINT(
THREAD_ANALYZER_FMT(" %-20s: Total CPU cycles used: %llu"),
@ -82,7 +94,6 @@ static void thread_analyze_cb(const struct k_thread *cthread, void *user_data)
struct k_thread *thread = (struct k_thread *)cthread;
#ifdef CONFIG_THREAD_RUNTIME_STATS
k_thread_runtime_stats_t rt_stats_all;
int ret;
#endif
size_t size = thread->stack_info.size;
struct ta_cb_user_data *ud = user_data;
@ -93,6 +104,7 @@ static void thread_analyze_cb(const struct k_thread *cthread, void *user_data)
const char *name;
size_t unused;
int err;
int ret;
@ -116,6 +128,16 @@ static void thread_analyze_cb(const struct k_thread *cthread, void *user_data)
info.stack_size = size;
info.stack_used = size - unused;
#ifdef CONFIG_THREAD_ANALYZER_PRIV_STACK_USAGE
ret = arch_thread_priv_stack_space_get(cthread, &size, &unused);
if (ret == 0) {
info.priv_stack_size = size;
info.priv_stack_used = size - unused;
} else {
info.priv_stack_size = 0;
}
#endif
#ifdef CONFIG_THREAD_RUNTIME_STATS
ret = 0;
@ -138,6 +160,9 @@ static void thread_analyze_cb(const struct k_thread *cthread, void *user_data)
rt_stats_all.execution_cycles;
}
#endif
ARG_UNUSED(ret);
cb(&info);
}