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esp32: Fix thread stack limit margin, change to new cstack API.

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This change moves that complexity out into the stack checker and fixes the
bug where stack margin wasn't set correctly by ESP32-C3 threads.

This work was funded through GitHub Sponsors.

Signed-off-by: Angus Gratton <angus@redyak.com.au>
This commit is contained in:
Angus Gratton
2024-08-06 16:13:33 +10:00
committed by Damien George
parent 86f2c285eb
commit e3955f421d
3 changed files with 8 additions and 14 deletions
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12
ports/esp32/main.c
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@@ -41,7 +41,7 @@
#include "esp_log.h"
#include "esp_psram.h"
#include "py/stackctrl.h"
#include "py/cstack.h"
#include "py/nlr.h"
#include "py/compile.h"
#include "py/runtime.h"
@@ -71,13 +71,6 @@
// MicroPython runs as a task under FreeRTOS
#define MP_TASK_PRIORITY (ESP_TASK_PRIO_MIN + 1)
// Set the margin for detecting stack overflow, depending on the CPU architecture.
#if CONFIG_IDF_TARGET_ESP32C3
#define MP_TASK_STACK_LIMIT_MARGIN (2048)
#else
#define MP_TASK_STACK_LIMIT_MARGIN (1024)
#endif
typedef struct _native_code_node_t {
struct _native_code_node_t *next;
uint32_t data[];
@@ -132,8 +125,7 @@ void mp_task(void *pvParameter) {
soft_reset:
// initialise the stack pointer for the main thread
mp_stack_set_top((void *)sp);
mp_stack_set_limit(MICROPY_TASK_STACK_SIZE - MP_TASK_STACK_LIMIT_MARGIN);
mp_cstack_init_with_top((void *)sp, MICROPY_TASK_STACK_SIZE);
gc_init(mp_task_heap, mp_task_heap + MICROPY_GC_INITIAL_HEAP_SIZE);
mp_init();
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_lib));

5
ports/esp32/mpconfigport.h
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@@ -62,6 +62,11 @@
// Python internal features
#define MICROPY_READER_VFS (1)
#define MICROPY_ENABLE_GC (1)
#if CONFIG_IDF_TARGET_ARCH_RISCV // RISC-V SoCs use more stack than Xtensa
#define MICROPY_STACK_CHECK_MARGIN (2048) // This may be unnecessarily conservative
#else
#define MICROPY_STACK_CHECK_MARGIN (1024)
#endif
#define MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF (1)
#define MICROPY_LONGINT_IMPL (MICROPY_LONGINT_IMPL_MPZ)
#define MICROPY_ERROR_REPORTING (MICROPY_ERROR_REPORTING_NORMAL)

5
ports/esp32/mpthreadport.c
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@@ -38,7 +38,7 @@
#if MICROPY_PY_THREAD
#define MP_THREAD_MIN_STACK_SIZE (4 * 1024)
#define MP_THREAD_DEFAULT_STACK_SIZE (MP_THREAD_MIN_STACK_SIZE + 1024)
#define MP_THREAD_DEFAULT_STACK_SIZE (MP_THREAD_MIN_STACK_SIZE + MICROPY_STACK_CHECK_MARGIN)
#define MP_THREAD_PRIORITY (ESP_TASK_PRIO_MIN + 1)
#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 2, 0) && !CONFIG_FREERTOS_ENABLE_STATIC_TASK_CLEAN_UP
@@ -160,9 +160,6 @@ mp_uint_t mp_thread_create_ex(void *(*entry)(void *), void *arg, size_t *stack_s
th->next = thread;
thread = th;
// adjust the stack_size to provide room to recover from hitting the limit
*stack_size -= 1024;
mp_thread_mutex_unlock(&thread_mutex);
return (mp_uint_t)th->id;