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Add Task Watchdog backtrace printing

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This commit makes the Task Watchdog print the backtrace of both
cores when it times out.
This commit is contained in:
Darian Leung 2020-03-27 17:58:12 +08:00 committed by Angus Gratton
parent 1786fc9ed2
commit a1fd207aee
3 changed files with 33 additions and 1 deletions
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9
components/esp32/crosscore_int.c
View File

@ -18,6 +18,7 @@
#include "esp_err.h"
#include "esp_intr.h"
#include "esp_intr_alloc.h"
#include "esp_panic.h"
#include "rom/ets_sys.h"
#include "rom/uart.h"
@ -36,6 +37,7 @@
#define REASON_YIELD BIT(0)
#define REASON_FREQ_SWITCH BIT(1)
#define REASON_PRINT_BACKTRACE BIT(2)
static portMUX_TYPE reason_spinlock = portMUX_INITIALIZER_UNLOCKED;
static volatile uint32_t reason[ portNUM_PROCESSORS ];
@ -76,6 +78,9 @@ static void IRAM_ATTR esp_crosscore_isr(void *arg) {
* to allow DFS features without the extra latency of the ISR hook.
*/
}
if (my_reason_val & REASON_PRINT_BACKTRACE) {
esp_backtrace_print(100);
}
}
//Initialize the crosscore interrupt on this core. Call this once
@ -117,3 +122,7 @@ void IRAM_ATTR esp_crosscore_int_send_freq_switch(int core_id)
esp_crosscore_int_send(core_id, REASON_FREQ_SWITCH);
}
void IRAM_ATTR esp_crosscore_int_send_print_backtrace(int core_id)
{
esp_crosscore_int_send(core_id, REASON_PRINT_BACKTRACE);
}

10
components/esp32/include/esp_crosscore_int.h
View File

@ -51,4 +51,14 @@ void esp_crosscore_int_send_yield(int core_id);
*/
void esp_crosscore_int_send_freq_switch(int core_id);
/**
* Send an interrupt to a CPU indicating it should print its current backtrace
*
* This is use internally by the Task Watchdog to dump the backtrace of the
* opposite core and should not be called from application code.
*
* @param core_id Core that should print its backtrace
*/
void esp_crosscore_int_send_print_backtrace(int core_id);
#endif

15
components/esp32/task_wdt.c
View File

@ -28,6 +28,7 @@
#include "esp_intr.h"
#include "esp_intr_alloc.h"
#include "esp_attr.h"
#include "esp_panic.h"
#include "esp_freertos_hooks.h"
#include "soc/timer_group_struct.h"
#include "soc/timer_group_reg.h"
@ -36,6 +37,7 @@
#include "driver/periph_ctrl.h"
#include "esp_task_wdt.h"
#include "esp_system_internal.h"
#include "esp_crosscore_int.h"
static const char *TAG = "task_wdt";
@ -167,13 +169,24 @@ static void task_wdt_isr(void *arg)
}
esp_task_wdt_isr_user_handler();
if (twdt_config->panic){ //Trigger Panic if configured to do so
ESP_EARLY_LOGE(TAG, "Aborting.");
portEXIT_CRITICAL_ISR(&twdt_spinlock);
esp_reset_reason_set_hint(ESP_RST_TASK_WDT);
abort();
} else {
int current_core = xPortGetCoreID();
//Print backtrace of current core
ESP_EARLY_LOGE(TAG, "Print CPU %d (current core) backtrace", current_core);
esp_backtrace_print(100);
#if !CONFIG_FREERTOS_UNICORE
//Print backtrace of other core
ESP_EARLY_LOGE(TAG, "Print CPU %d backtrace", !current_core);
esp_crosscore_int_send_print_backtrace(!current_core);
#endif
}
portEXIT_CRITICAL_ISR(&twdt_spinlock);
}