/* Make sure timers don't return early * by: john stultz (johnstul@us.ibm.com) * John Stultz (john.stultz@linaro.org) * (C) Copyright IBM 2012 * (C) Copyright Linaro 2013 2015 * Licensed under the GPLv2 * * To build: * $ gcc nanosleep.c -o nanosleep -lrt * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include #include #include #include #include #include #include #include #ifdef KTEST #include "../kselftest.h" #else static inline int ksft_exit_pass(void) { exit(0); } static inline int ksft_exit_fail(void) { exit(1); } #endif #define NSEC_PER_SEC 1000000000ULL #define CLOCK_REALTIME 0 #define CLOCK_MONOTONIC 1 #define CLOCK_PROCESS_CPUTIME_ID 2 #define CLOCK_THREAD_CPUTIME_ID 3 #define CLOCK_MONOTONIC_RAW 4 #define CLOCK_REALTIME_COARSE 5 #define CLOCK_MONOTONIC_COARSE 6 #define CLOCK_BOOTTIME 7 #define CLOCK_REALTIME_ALARM 8 #define CLOCK_BOOTTIME_ALARM 9 #define CLOCK_HWSPECIFIC 10 #define CLOCK_TAI 11 #define NR_CLOCKIDS 12 #define UNSUPPORTED 0xf00f char *clockstring(int clockid) { switch (clockid) { case CLOCK_REALTIME: return "CLOCK_REALTIME"; case CLOCK_MONOTONIC: return "CLOCK_MONOTONIC"; case CLOCK_PROCESS_CPUTIME_ID: return "CLOCK_PROCESS_CPUTIME_ID"; case CLOCK_THREAD_CPUTIME_ID: return "CLOCK_THREAD_CPUTIME_ID"; case CLOCK_MONOTONIC_RAW: return "CLOCK_MONOTONIC_RAW"; case CLOCK_REALTIME_COARSE: return "CLOCK_REALTIME_COARSE"; case CLOCK_MONOTONIC_COARSE: return "CLOCK_MONOTONIC_COARSE"; case CLOCK_BOOTTIME: return "CLOCK_BOOTTIME"; case CLOCK_REALTIME_ALARM: return "CLOCK_REALTIME_ALARM"; case CLOCK_BOOTTIME_ALARM: return "CLOCK_BOOTTIME_ALARM"; case CLOCK_TAI: return "CLOCK_TAI"; }; return "UNKNOWN_CLOCKID"; } /* returns 1 if a <= b, 0 otherwise */ static inline int in_order(struct timespec a, struct timespec b) { if (a.tv_sec < b.tv_sec) return 1; if (a.tv_sec > b.tv_sec) return 0; if (a.tv_nsec > b.tv_nsec) return 0; return 1; } struct timespec timespec_add(struct timespec ts, unsigned long long ns) { ts.tv_nsec += ns; while (ts.tv_nsec >= NSEC_PER_SEC) { ts.tv_nsec -= NSEC_PER_SEC; ts.tv_sec++; } return ts; } int nanosleep_test(int clockid, long long ns) { struct timespec now, target, rel; /* First check abs time */ if (clock_gettime(clockid, &now)) return UNSUPPORTED; target = timespec_add(now, ns); if (clock_nanosleep(clockid, TIMER_ABSTIME, &target, NULL)) return UNSUPPORTED; clock_gettime(clockid, &now); if (!in_order(target, now)) return -1; /* Second check reltime */ clock_gettime(clockid, &now); rel.tv_sec = 0; rel.tv_nsec = 0; rel = timespec_add(rel, ns); target = timespec_add(now, ns); clock_nanosleep(clockid, 0, &rel, NULL); clock_gettime(clockid, &now); if (!in_order(target, now)) return -1; return 0; } int main(int argc, char **argv) { long long length; int clockid, ret; for (clockid = CLOCK_REALTIME; clockid < NR_CLOCKIDS; clockid++) { /* Skip cputime clockids since nanosleep won't increment cputime */ if (clockid == CLOCK_PROCESS_CPUTIME_ID || clockid == CLOCK_THREAD_CPUTIME_ID || clockid == CLOCK_HWSPECIFIC) continue; printf("Nanosleep %-31s ", clockstring(clockid)); length = 10; while (length <= (NSEC_PER_SEC * 10)) { ret = nanosleep_test(clockid, length); if (ret == UNSUPPORTED) { printf("[UNSUPPORTED]\n"); goto next; } if (ret < 0) { printf("[FAILED]\n"); return ksft_exit_fail(); } length *= 100; } printf("[OK]\n"); next: ret = 0; } return ksft_exit_pass(); } r>context:space:mode:
authorRuslan Ruslichenko <rruslich@cisco.com>2017-01-17 16:13:52 +0200
committerThomas Gleixner <tglx@linutronix.de>2017-01-18 15:37:28 +0100
commit020eb3daaba2857b32c4cf4c82f503d6a00a67de (patch)
tree329a05b424d783db675a4c711bd7633575e8181b /tools/perf/pmu-events/arch/x86/broadwellx/virtual-memory.json
parent49def1853334396f948dcb4cedb9347abb318df5 (diff)
x86/ioapic: Restore IO-APIC irq_chip retrigger callback
commit d32932d02e18 removed the irq_retrigger callback from the IO-APIC chip and did not add it to the new IO-APIC-IR irq chip. Unfortunately the software resend fallback is not enabled on X86, so edge interrupts which are received during the lazy disabled state of the interrupt line are not retriggered and therefor lost. Restore the callbacks. [ tglx: Massaged changelog ] Fixes: d32932d02e18 ("x86/irq: Convert IOAPIC to use hierarchical irqdomain interfaces") Signed-off-by: Ruslan Ruslichenko <rruslich@cisco.com> Cc: xe-linux-external@cisco.com Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1484662432-13580-1-git-send-email-rruslich@cisco.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'tools/perf/pmu-events/arch/x86/broadwellx/virtual-memory.json')