From 34ff636f322c6d5e4f0a52338fa63a7dff09a495 Mon Sep 17 00:00:00 2001 From: Joel Fernandes Date: Sat, 18 Jul 2026 13:15:36 -0400 Subject: scftorture: Count single_rpc offline failures in statistics output scf_torture_stats_print() aggregates each invoker thread's counters into a local scf_statistics structure before printing, but the n_single_rpc_ofl field is missing from the aggregation loop. As a result, the "single_rpc_ofl" value printed in the statistics line is always zero, even when smp_call_function_single() invocations for the RPC test have failed due to offline CPUs and been counted by the invoker threads. Add the missing accumulation so that the printed value reflects the actual counts. Signed-off-by: Joel Fernandes Signed-off-by: Paul E. McKenney --- samples/pfsm/.gitignore | 2 + samples/pfsm/Makefile | 4 ++ samples/pfsm/pfsm-wakeup.c | 125 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 131 insertions(+) create mode 100644 samples/pfsm/.gitignore create mode 100644 samples/pfsm/Makefile create mode 100644 samples/pfsm/pfsm-wakeup.c (limited to 'samples/pfsm') diff --git a/samples/pfsm/.gitignore b/samples/pfsm/.gitignore new file mode 100644 index 000000000..f350a030a --- /dev/null +++ b/samples/pfsm/.gitignore @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0 +/pfsm-wakeup diff --git a/samples/pfsm/Makefile b/samples/pfsm/Makefile new file mode 100644 index 000000000..213e8d9f5 --- /dev/null +++ b/samples/pfsm/Makefile @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 +userprogs-always-y += pfsm-wakeup + +userccflags += -I usr/include diff --git a/samples/pfsm/pfsm-wakeup.c b/samples/pfsm/pfsm-wakeup.c new file mode 100644 index 000000000..299dd9e1f --- /dev/null +++ b/samples/pfsm/pfsm-wakeup.c @@ -0,0 +1,125 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * TPS6594 PFSM userspace example + * + * Copyright (C) 2023 BayLibre Incorporated - https://www.baylibre.com/ + * + * This example shows how to use PFSMs from a userspace application, + * on TI j721s2 platform. The PMIC is armed to be triggered by a RTC + * alarm to execute state transition (RETENTION to ACTIVE). + */ + +#include +#include +#include +#include + +#include +#include + +#define ALARM_DELTA_SEC 30 + +#define RTC_A "/dev/rtc0" + +#define PMIC_NB 3 +#define PMIC_A "/dev/pfsm-0-0x48" +#define PMIC_B "/dev/pfsm-0-0x4c" +#define PMIC_C "/dev/pfsm-2-0x58" + +static const char * const dev_pfsm[] = {PMIC_A, PMIC_B, PMIC_C}; + +int main(int argc, char *argv[]) +{ + int i, ret, fd_rtc, fd_pfsm[PMIC_NB] = { 0 }; + struct rtc_time rtc_tm; + struct pmic_state_opt pmic_opt = { 0 }; + unsigned long data; + + fd_rtc = open(RTC_A, O_RDONLY); + if (fd_rtc < 0) { + perror("Failed to open RTC device."); + goto out; + } + + for (i = 0 ; i < PMIC_NB ; i++) { + fd_pfsm[i] = open(dev_pfsm[i], O_RDWR); + if (fd_pfsm[i] < 0) { + perror("Failed to open PFSM device."); + goto out; + } + } + + /* Read RTC date/time */ + ret = ioctl(fd_rtc, RTC_RD_TIME, &rtc_tm); + if (ret < 0) { + perror("Failed to read RTC date/time."); + goto out; + } + printf("Current RTC date/time is %d-%d-%d, %02d:%02d:%02d.\n", + rtc_tm.tm_mday, rtc_tm.tm_mon + 1, rtc_tm.tm_year + 1900, + rtc_tm.tm_hour, rtc_tm.tm_min, rtc_tm.tm_sec); + + /* Set RTC alarm to ALARM_DELTA_SEC sec in the future, and check for rollover */ + rtc_tm.tm_sec += ALARM_DELTA_SEC; + if (rtc_tm.tm_sec >= 60) { + rtc_tm.tm_sec %= 60; + rtc_tm.tm_min++; + } + if (rtc_tm.tm_min == 60) { + rtc_tm.tm_min = 0; + rtc_tm.tm_hour++; + } + if (rtc_tm.tm_hour == 24) + rtc_tm.tm_hour = 0; + ret = ioctl(fd_rtc, RTC_ALM_SET, &rtc_tm); + if (ret < 0) { + perror("Failed to set RTC alarm."); + goto out; + } + + /* Enable alarm interrupts */ + ret = ioctl(fd_rtc, RTC_AIE_ON, 0); + if (ret < 0) { + perror("Failed to enable alarm interrupts."); + goto out; + } + printf("Waiting %d seconds for alarm...\n", ALARM_DELTA_SEC); + + /* + * Set RETENTION state with options for PMIC_C/B/A respectively. + * Since PMIC_A is master, it should be the last one to be configured. + */ + pmic_opt.ddr_retention = 1; + for (i = PMIC_NB - 1 ; i >= 0 ; i--) { + printf("Set RETENTION state for PMIC_%d.\n", i); + sleep(1); + ret = ioctl(fd_pfsm[i], PMIC_SET_RETENTION_STATE, &pmic_opt); + if (ret < 0) { + perror("Failed to set RETENTION state."); + goto out_reset; + } + } + + /* This blocks until the alarm ring causes an interrupt */ + ret = read(fd_rtc, &data, sizeof(unsigned long)); + if (ret < 0) + perror("Failed to get RTC alarm."); + else + puts("Alarm rang.\n"); + +out_reset: + ioctl(fd_rtc, RTC_AIE_OFF, 0); + + /* Set ACTIVE state for PMIC_A */ + ioctl(fd_pfsm[0], PMIC_SET_ACTIVE_STATE, 0); + +out: + for (i = 0 ; i < PMIC_NB ; i++) + if (fd_pfsm[i]) + close(fd_pfsm[i]); + + if (fd_rtc) + close(fd_rtc); + + return 0; +} -- cgit v1.3.1