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Bluetooth: controller: Add ISR cputime measurement

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Adding ISR cputime measurement for Radio, LLL, ULL_HIGH and
ULL_LOW execution contexts.

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
This commit is contained in:
Vinayak Kariappa Chettimada 2021-01-28 17:02:05 +05:30 • committed by Anas Nashif
commit 929dae8cad
5 changed files with 123 additions and 2 deletions
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8
subsys/bluetooth/controller/hci/hci.c
View file

@ -5731,13 +5731,17 @@ static void encode_control(struct node_rx_pdu *node_rx,
#if defined(CONFIG_BT_CTLR_PROFILE_ISR)
case NODE_RX_TYPE_PROFILE:
BT_INFO("l: %d, %d, %d; t: %d, %d, %d.",
BT_INFO("l: %u, %u, %u; t: %u, %u, %u; cpu: %u, %u, %u, %u.",
pdu_data->profile.lcur,
pdu_data->profile.lmin,
pdu_data->profile.lmax,
pdu_data->profile.cur,
pdu_data->profile.min,
pdu_data->profile.max);
pdu_data->profile.max,
pdu_data->profile.radio,
pdu_data->profile.lll,
pdu_data->profile.ull_high,
pdu_data->profile.ull_low);
return;
#endif /* CONFIG_BT_CTLR_PROFILE_ISR */

21
subsys/bluetooth/controller/ll_sw/nordic/lll/lll.c
View file

@ -30,6 +30,7 @@
#include "lll_vendor.h"
#include "lll_clock.h"
#include "lll_internal.h"
#include "lll_prof_internal.h"
#define BT_DBG_ENABLED IS_ENABLED(CONFIG_BT_DEBUG_HCI_DRIVER)
#define LOG_MODULE_NAME bt_ctlr_lll
@ -78,10 +79,14 @@ ISR_DIRECT_DECLARE(radio_nrf5_isr)
{
DEBUG_RADIO_ISR(1);
lll_prof_enter_radio();
isr_radio();
ISR_DIRECT_PM();
lll_prof_exit_radio();
DEBUG_RADIO_ISR(0);
return 1;
}
@ -90,6 +95,8 @@ static void rtc0_nrf5_isr(const void *arg)
{
DEBUG_TICKER_ISR(1);
lll_prof_enter_ull_high();
/* On compare0 run ticker worker instance0 */
if (NRF_RTC0->EVENTS_COMPARE[0]) {
NRF_RTC0->EVENTS_COMPARE[0] = 0;
@ -99,9 +106,15 @@ static void rtc0_nrf5_isr(const void *arg)
mayfly_run(TICKER_USER_ID_ULL_HIGH);
lll_prof_exit_ull_high();
#if !defined(CONFIG_BT_CTLR_LOW_LAT) && \
(CONFIG_BT_CTLR_ULL_HIGH_PRIO == CONFIG_BT_CTLR_ULL_LOW_PRIO)
lll_prof_enter_ull_low();
mayfly_run(TICKER_USER_ID_ULL_LOW);
lll_prof_exit_ull_low();
#endif
DEBUG_TICKER_ISR(0);
@ -111,8 +124,12 @@ static void swi_lll_nrf5_isr(const void *arg)
{
DEBUG_RADIO_ISR(1);
lll_prof_enter_lll();
mayfly_run(TICKER_USER_ID_LLL);
lll_prof_exit_lll();
DEBUG_RADIO_ISR(0);
}
@ -122,8 +139,12 @@ static void swi_ull_low_nrf5_isr(const void *arg)
{
DEBUG_TICKER_JOB(1);
lll_prof_enter_ull_low();
mayfly_run(TICKER_USER_ID_ULL_LOW);
lll_prof_exit_ull_low();
DEBUG_TICKER_JOB(0);
}
#endif

72
subsys/bluetooth/controller/ll_sw/nordic/lll/lll_prof.c
View file

@ -18,6 +18,17 @@
#include "lll.h"
static inline void sample(uint32_t *timestamp);
static inline void delta(uint32_t timestamp, uint8_t *cputime);
static uint32_t timestamp_radio;
static uint32_t timestamp_lll;
static uint32_t timestamp_ull_high;
static uint32_t timestamp_ull_low;
static uint8_t cputime_radio;
static uint8_t cputime_lll;
static uint8_t cputime_ull_high;
static uint8_t cputime_ull_low;
static uint8_t latency_min = (uint8_t) -1;
static uint8_t latency_max;
static uint8_t latency_prev;
@ -26,6 +37,46 @@ static uint8_t cputime_max;
static uint8_t cputime_prev;
static uint32_t timestamp_latency;
void lll_prof_enter_radio(void)
{
sample(&timestamp_radio);
}
void lll_prof_exit_radio(void)
{
delta(timestamp_radio, &cputime_radio);
}
void lll_prof_enter_lll(void)
{
sample(&timestamp_lll);
}
void lll_prof_exit_lll(void)
{
delta(timestamp_lll, &cputime_lll);
}
void lll_prof_enter_ull_high(void)
{
sample(&timestamp_ull_high);
}
void lll_prof_exit_ull_high(void)
{
delta(timestamp_ull_high, &cputime_ull_high);
}
void lll_prof_enter_ull_low(void)
{
sample(&timestamp_ull_low);
}
void lll_prof_exit_ull_low(void)
{
delta(timestamp_ull_low, &cputime_ull_low);
}
void lll_prof_latency_capture(void)
{
/* sample the packet timer, use it to calculate ISR latency
@ -134,9 +185,30 @@ void lll_prof_send(void)
p->cur = cputime;
p->min = cputime_min;
p->max = cputime_max;
p->radio = cputime_radio;
p->lll = cputime_lll;
p->ull_high = cputime_ull_high;
p->ull_low = cputime_ull_low;
ull_rx_put(rx->hdr.link, rx);
ull_rx_sched();
}
}
}
static inline void sample(uint32_t *timestamp)
{
radio_tmr_sample();
*timestamp = radio_tmr_sample_get();
}
static inline void delta(uint32_t timestamp, uint8_t *cputime)
{
uint32_t delta;
radio_tmr_sample();
delta = radio_tmr_sample_get() - timestamp;
if (delta < UINT8_MAX && delta > *cputime) {
*cputime = delta;
}
}

20
subsys/bluetooth/controller/ll_sw/nordic/lll/lll_prof_internal.h
View file

@ -4,6 +4,26 @@
* SPDX-License-Identifier: Apache-2.0
*/
#if defined(CONFIG_BT_CTLR_PROFILE_ISR)
void lll_prof_enter_radio(void);
void lll_prof_exit_radio(void);
void lll_prof_enter_lll(void);
void lll_prof_exit_lll(void);
void lll_prof_enter_ull_high(void);
void lll_prof_exit_ull_high(void);
void lll_prof_enter_ull_low(void);
void lll_prof_exit_ull_low(void);
#else
static inline void lll_prof_enter_radio(void) {}
static inline void lll_prof_exit_radio(void) {}
static inline void lll_prof_enter_lll(void) {}
static inline void lll_prof_exit_lll(void) {}
static inline void lll_prof_enter_ull_high(void) {}
static inline void lll_prof_exit_ull_high(void) {}
static inline void lll_prof_enter_ull_low(void) {}
static inline void lll_prof_exit_ull_low(void) {}
#endif
void lll_prof_latency_capture(void);
void lll_prof_radio_end_backup(void);
void lll_prof_cputime_capture(void);

4
subsys/bluetooth/controller/ll_sw/pdu.h
View file

@ -610,6 +610,10 @@ struct profile {
uint8_t cur;
uint8_t min;
uint8_t max;
uint8_t radio;
uint8_t lll;
uint8_t ull_high;
uint8_t ull_low;
} __packed;
#endif /* CONFIG_BT_CTLR_PROFILE_ISR */