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From: Vincenzo Frascino <vincenzo.frascino@arm.com>
To: linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org,
	linux-kselftest@vger.kernel.org
Cc: Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>, Arnd Bergmann <arnd@arndb.de>,
	Russell King <linux@armlinux.org.uk>,
	Ralf Baechle <ralf@linux-mips.org>,
	Paul Burton <paul.burton@mips.com>,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Mark Salyzyn <salyzyn@android.com>,
	Peter Collingbourne <pcc@google.com>,
	Shuah Khan <shuah@kernel.org>,
	Dmitry Safonov <0x7f454c46@gmail.com>,
	Rasmus Villemoes <linux@rasmusvillemoes.dk>,
	Huw Davies <huw@codeweavers.com>,
	Shijith Thotton <sthotton@marvell.com>,
	Andre Przywara <andre.przywara@arm.com>
Subject: [PATCH v7 25/25] kselftest: Extend vDSO selftest
Date: Fri, 21 Jun 2019 10:52:52 +0100
Message-ID: <20190621095252.32307-26-vincenzo.frascino@arm.com> (raw)
In-Reply-To: <20190621095252.32307-1-vincenzo.frascino@arm.com>

The current version of the multiarch vDSO selftest verifies only
gettimeofday.

Extend the vDSO selftest to the other library functions:
 - time
 - clock_getres
 - clock_gettime

The extension has been used to verify the unified vdso library on the
supported architectures.

Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
 tools/testing/selftests/vDSO/Makefile         |   2 +
 tools/testing/selftests/vDSO/vdso_config.h    |  90 +++++++
 tools/testing/selftests/vDSO/vdso_full_test.c | 244 ++++++++++++++++++
 3 files changed, 336 insertions(+)
 create mode 100644 tools/testing/selftests/vDSO/vdso_config.h
 create mode 100644 tools/testing/selftests/vDSO/vdso_full_test.c

diff --git a/tools/testing/selftests/vDSO/Makefile b/tools/testing/selftests/vDSO/Makefile
index 9e03d61f52fd..68e9b4a1cdcf 100644
--- a/tools/testing/selftests/vDSO/Makefile
+++ b/tools/testing/selftests/vDSO/Makefile
@@ -5,6 +5,7 @@ uname_M := $(shell uname -m 2>/dev/null || echo not)
 ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/x86/ -e s/x86_64/x86/)
 
 TEST_GEN_PROGS := $(OUTPUT)/vdso_test
+TEST_GEN_PROGS += $(OUTPUT)/vdso_full_test
 ifeq ($(ARCH),x86)
 TEST_GEN_PROGS += $(OUTPUT)/vdso_standalone_test_x86
 endif
@@ -18,6 +19,7 @@ endif
 
 all: $(TEST_GEN_PROGS)
 $(OUTPUT)/vdso_test: parse_vdso.c vdso_test.c
+$(OUTPUT)/vdso_full_test: parse_vdso.c vdso_full_test.c
 $(OUTPUT)/vdso_standalone_test_x86: vdso_standalone_test_x86.c parse_vdso.c
 	$(CC) $(CFLAGS) $(CFLAGS_vdso_standalone_test_x86) \
 		vdso_standalone_test_x86.c parse_vdso.c \
diff --git a/tools/testing/selftests/vDSO/vdso_config.h b/tools/testing/selftests/vDSO/vdso_config.h
new file mode 100644
index 000000000000..eeb725df6045
--- /dev/null
+++ b/tools/testing/selftests/vDSO/vdso_config.h
@@ -0,0 +1,90 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * vdso_config.h: Configuration options for vDSO tests.
+ * Copyright (c) 2019 Arm Ltd.
+ */
+#ifndef __VDSO_CONFIG_H__
+#define __VDSO_CONFIG_H__
+
+/*
+ * Each architecture exports its vDSO implementation with different names
+ * and a different version from the others, so we need to handle it as a
+ * special case.
+ */
+#if defined(__arm__)
+#define VDSO_VERSION		0
+#define VDSO_NAMES		1
+#define VDSO_32BIT		1
+#elif defined(__aarch64__)
+#define VDSO_VERSION		3
+#define VDSO_NAMES		0
+#elif defined(__powerpc__)
+#define VDSO_VERSION		1
+#define VDSO_NAMES		0
+#define VDSO_32BIT		1
+#elif defined(__powerpc64__)
+#define VDSO_VERSION		1
+#define VDSO_NAMES		0
+#elif defined (__s390__)
+#define VDSO_VERSION		2
+#define VDSO_NAMES		0
+#define VDSO_32BIT		1
+#elif defined (__s390X__)
+#define VDSO_VERSION		2
+#define VDSO_NAMES		0
+#elif defined(__mips__)
+#define VDSO_VERSION		0
+#define VDSO_NAMES		1
+#define VDSO_32BIT		1
+#elif defined(__sparc__)
+#define VDSO_VERSION		0
+#define VDSO_NAMES		1
+#define VDSO_32BIT		1
+#elif defined(__i386__)
+#define VDSO_VERSION		0
+#define VDSO_NAMES		1
+#define VDSO_32BIT		1
+#elif defined(__x86_64__)
+#define VDSO_VERSION		0
+#define VDSO_NAMES		1
+#elif defined(__riscv__)
+#define VDSO_VERSION		5
+#define VDSO_NAMES		1
+#define VDSO_32BIT		1
+#else /* nds32 */
+#define VDSO_VERSION		4
+#define VDSO_NAMES		1
+#define VDSO_32BIT		1
+#endif
+
+static const char *versions[6] = {
+	"LINUX_2.6",
+	"LINUX_2.6.15",
+	"LINUX_2.6.29",
+	"LINUX_2.6.39",
+	"LINUX_4",
+	"LINUX_4.15",
+};
+
+static const char *names[2][5] = {
+	{
+		"__kernel_gettimeofday",
+		"__kernel_clock_gettime",
+		"__kernel_time",
+		"__kernel_clock_getres",
+#if defined(VDSO_32BIT)
+		"__kernel_clock_gettime64",
+#endif
+	},
+	{
+		"__vdso_gettimeofday",
+		"__vdso_clock_gettime",
+		"__vdso_time",
+		"__vdso_clock_getres",
+#if defined(VDSO_32BIT)
+		"__vdso_clock_gettime64",
+#endif
+	},
+};
+
+#endif /* __VDSO_CONFIG_H__ */
diff --git a/tools/testing/selftests/vDSO/vdso_full_test.c b/tools/testing/selftests/vDSO/vdso_full_test.c
new file mode 100644
index 000000000000..3d603f1394af
--- /dev/null
+++ b/tools/testing/selftests/vDSO/vdso_full_test.c
@@ -0,0 +1,244 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * vdso_full_test.c: Sample code to test all the timers.
+ * Copyright (c) 2019 Arm Ltd.
+ *
+ * Compile with:
+ * gcc -std=gnu99 vdso_full_test.c parse_vdso.c
+ *
+ */
+
+#include <stdint.h>
+#include <elf.h>
+#include <stdio.h>
+#include <time.h>
+#include <sys/auxv.h>
+#include <sys/time.h>
+#define _GNU_SOURCE
+#include <unistd.h>
+#include <sys/syscall.h>
+
+#include "../kselftest.h"
+#include "vdso_config.h"
+
+extern void *vdso_sym(const char *version, const char *name);
+extern void vdso_init_from_sysinfo_ehdr(uintptr_t base);
+extern void vdso_init_from_auxv(void *auxv);
+
+static const char *version;
+static const char **name;
+
+typedef long (*vdso_gettimeofday_t)(struct timeval *tv, struct timezone *tz);
+typedef long (*vdso_clock_gettime_t)(clockid_t clk_id, struct timespec *ts);
+typedef long (*vdso_clock_getres_t)(clockid_t clk_id, struct timespec *ts);
+typedef time_t (*vdso_time_t)(time_t *t);
+
+static int vdso_test_gettimeofday(void)
+{
+	/* Find gettimeofday. */
+	vdso_gettimeofday_t vdso_gettimeofday =
+		(vdso_gettimeofday_t)vdso_sym(version, name[0]);
+
+	if (!vdso_gettimeofday) {
+		printf("Could not find %s\n", name[0]);
+		return KSFT_SKIP;
+	}
+
+	struct timeval tv;
+	long ret = vdso_gettimeofday(&tv, 0);
+
+	if (ret == 0) {
+		printf("The time is %lld.%06lld\n",
+		       (long long)tv.tv_sec, (long long)tv.tv_usec);
+	} else {
+		printf("%s failed\n", name[0]);
+		return KSFT_FAIL;
+	}
+
+	return KSFT_PASS;
+}
+
+static int vdso_test_clock_gettime(clockid_t clk_id)
+{
+	/* Find clock_gettime. */
+	vdso_clock_gettime_t vdso_clock_gettime =
+		(vdso_clock_gettime_t)vdso_sym(version, name[1]);
+
+	if (!vdso_clock_gettime) {
+		printf("Could not find %s\n", name[1]);
+		return KSFT_SKIP;
+	}
+
+	struct timespec ts;
+	long ret = vdso_clock_gettime(clk_id, &ts);
+
+	if (ret == 0) {
+		printf("The time is %lld.%06lld\n",
+		       (long long)ts.tv_sec, (long long)ts.tv_nsec);
+	} else {
+		printf("%s failed\n", name[1]);
+		return KSFT_FAIL;
+	}
+
+	return KSFT_PASS;
+}
+
+static int vdso_test_time(void)
+{
+	/* Find time. */
+	vdso_time_t vdso_time =
+		(vdso_time_t)vdso_sym(version, name[2]);
+
+	if (!vdso_time) {
+		printf("Could not find %s\n", name[2]);
+		return KSFT_SKIP;
+	}
+
+	long ret = vdso_time(NULL);
+
+	if (ret > 0) {
+		printf("The time in hours since January 1, 1970 is %lld\n",
+				(long long)(ret / 3600));
+	} else {
+		printf("%s failed\n", name[2]);
+		return KSFT_FAIL;
+	}
+
+	return KSFT_PASS;
+}
+
+static int vdso_test_clock_getres(clockid_t clk_id)
+{
+	/* Find clock_getres. */
+	vdso_clock_getres_t vdso_clock_getres =
+		(vdso_clock_getres_t)vdso_sym(version, name[3]);
+
+	if (!vdso_clock_getres) {
+		printf("Could not find %s\n", name[3]);
+		return KSFT_SKIP;
+	}
+
+	struct timespec ts, sys_ts;
+	long ret = vdso_clock_getres(clk_id, &ts);
+
+	if (ret == 0) {
+		printf("The resolution is %lld %lld\n",
+		       (long long)ts.tv_sec, (long long)ts.tv_nsec);
+	} else {
+		printf("%s failed\n", name[3]);
+		return KSFT_FAIL;
+	}
+
+	ret = syscall(SYS_clock_getres, clk_id, &sys_ts);
+
+	if ((sys_ts.tv_sec != ts.tv_sec) || (sys_ts.tv_nsec != ts.tv_nsec)) {
+		printf("%s failed\n", name[3]);
+		return KSFT_FAIL;
+	}
+
+	return KSFT_PASS;
+}
+
+const char *vdso_clock_name[12] = {
+	"CLOCK_REALTIME",
+	"CLOCK_MONOTONIC",
+	"CLOCK_PROCESS_CPUTIME_ID",
+	"CLOCK_THREAD_CPUTIME_ID",
+	"CLOCK_MONOTONIC_RAW",
+	"CLOCK_REALTIME_COARSE",
+	"CLOCK_MONOTONIC_COARSE",
+	"CLOCK_BOOTTIME",
+	"CLOCK_REALTIME_ALARM",
+	"CLOCK_BOOTTIME_ALARM",
+	"CLOCK_SGI_CYCLE",
+	"CLOCK_TAI",
+};
+
+/*
+ * This function calls vdso_test_clock_gettime and vdso_test_clock_getres
+ * with different values for clock_id.
+ */
+static inline int vdso_test_clock(clockid_t clock_id)
+{
+	int ret0, ret1;
+
+	ret0 = vdso_test_clock_gettime(clock_id);
+	/* A skipped test is considered passed */
+	if (ret0 == KSFT_SKIP)
+		ret0 = KSFT_PASS;
+
+	ret1 = vdso_test_clock_getres(clock_id);
+	/* A skipped test is considered passed */
+	if (ret1 == KSFT_SKIP)
+		ret1 = KSFT_PASS;
+
+	ret0 += ret1;
+
+	printf("clock_id: %s", vdso_clock_name[clock_id]);
+
+	if (ret0 > 0)
+		printf(" [FAIL]\n");
+	else
+		printf(" [PASS]\n");
+
+	return ret0;
+}
+
+int main(int argc, char **argv)
+{
+	unsigned long sysinfo_ehdr = getauxval(AT_SYSINFO_EHDR);
+	int ret;
+
+	if (!sysinfo_ehdr) {
+		printf("AT_SYSINFO_EHDR is not present!\n");
+		return KSFT_SKIP;
+	}
+
+	version = versions[VDSO_VERSION];
+	name = (const char **)&names[VDSO_NAMES];
+
+	printf("[vDSO kselftest] VDSO_VERSION: %s\n", version);
+
+	vdso_init_from_sysinfo_ehdr(getauxval(AT_SYSINFO_EHDR));
+
+	ret = vdso_test_gettimeofday();
+
+#if _POSIX_TIMERS > 0
+
+#ifdef CLOCK_REALTIME
+	ret += vdso_test_clock(CLOCK_REALTIME);
+#endif
+
+#ifdef CLOCK_BOOTTIME
+	ret += vdso_test_clock(CLOCK_BOOTTIME);
+#endif
+
+#ifdef CLOCK_TAI
+	ret += vdso_test_clock(CLOCK_TAI);
+#endif
+
+#ifdef CLOCK_REALTIME_COARSE
+	ret += vdso_test_clock(CLOCK_REALTIME_COARSE);
+#endif
+
+#ifdef CLOCK_MONOTONIC
+	ret += vdso_test_clock(CLOCK_MONOTONIC);
+#endif
+
+#ifdef CLOCK_MONOTONIC_RAW
+	ret += vdso_test_clock(CLOCK_MONOTONIC_RAW);
+#endif
+
+#ifdef CLOCK_MONOTONIC_COARSE
+	ret += vdso_test_clock(CLOCK_MONOTONIC_COARSE);
+#endif
+
+#endif
+
+	ret += vdso_test_time();
+
+	if (ret > 0)
+		return KSFT_FAIL;
+
+	return KSFT_PASS;
+}
-- 
2.21.0


  parent reply index

Thread overview: 108+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-21  9:52 [PATCH v7 00/25] Unify vDSOs across more architectures Vincenzo Frascino
2019-06-21  9:52 ` [PATCH v7 01/25] kernel: Standardize vdso_datapage Vincenzo Frascino
2019-06-24 13:56   ` Catalin Marinas
2019-06-21  9:52 ` [PATCH v7 02/25] kernel: Define gettimeofday vdso common code Vincenzo Frascino
2019-06-21  9:52 ` [PATCH v7 03/25] kernel: Unify update_vsyscall implementation Vincenzo Frascino
2019-06-21 10:49   ` Huw Davies
2019-06-21  9:52 ` [PATCH v7 04/25] arm64: Substitute gettimeofday with C implementation Vincenzo Frascino
2019-06-24 13:36   ` Will Deacon
2019-06-24 13:59     ` Vincenzo Frascino
2019-06-25 16:18     ` [PATCH 1/3] lib/vdso: Delay mask application in do_hres() Vincenzo Frascino
2019-06-25 16:18       ` [PATCH 2/3] arm64: Fix __arch_get_hw_counter() implementation Vincenzo Frascino
2019-06-25 16:18       ` [PATCH 3/3] arm64: compat: " Vincenzo Frascino
2019-06-25 17:02       ` [PATCH 1/3] lib/vdso: Delay mask application in do_hres() Thomas Gleixner
2019-06-25 18:27         ` Thomas Gleixner
2019-06-25 20:15           ` Andy Lutomirski
2019-06-25 22:24             ` Thomas Gleixner
2019-06-26  6:38         ` Thomas Gleixner
2019-06-26  9:25           ` Vincenzo Frascino
2019-06-26 10:02             ` lib/vdso: Make delta calculation work correctly Thomas Gleixner
2019-06-26 11:08               ` Vincenzo Frascino
2019-06-24 13:58   ` [PATCH v7 04/25] arm64: Substitute gettimeofday with C implementation Catalin Marinas
2019-06-25 15:33   ` Dave Martin
2019-06-26 13:27     ` Vincenzo Frascino
2019-06-26 16:14       ` Dave Martin
2019-06-26 19:01         ` Vincenzo Frascino
2019-06-27 10:01           ` Dave Martin
2019-06-27 10:57             ` Vincenzo Frascino
2019-06-27 11:27               ` Dave Martin
2019-06-27 11:59                 ` Vincenzo Frascino
2019-06-27 14:38                   ` Dave Martin
2019-06-27 15:34                     ` Vincenzo Frascino
2019-06-25 17:43   ` [PATCH] arm64: vdso: Fix compilation with clang < 8 Vincenzo Frascino
2019-06-26 11:36   ` [PATCH v2] arm64: vdso: Fix compilation with clang older then 8 Vincenzo Frascino
     [not found]   ` <CGME20190628130921eucas1p239935b0771032c331911eacc1a69dd2e@eucas1p2.samsung.com>
2019-06-28 13:09     ` [PATCH v7 04/25] arm64: Substitute gettimeofday with C implementation Marek Szyprowski
2019-06-28 14:32       ` Vincenzo Frascino
2019-06-28 16:50         ` Sylwester Nawrocki
2019-06-29  6:58           ` Vincenzo Frascino
2019-07-08 12:57             ` Sylwester Nawrocki
2019-07-08 13:09               ` Vincenzo Frascino
2019-06-21  9:52 ` [PATCH v7 05/25] arm64: Build vDSO with -ffixed-x18 Vincenzo Frascino
2019-06-21  9:52 ` [PATCH v7 06/25] arm64: compat: Add missing syscall numbers Vincenzo Frascino
2019-06-21  9:52 ` [PATCH v7 07/25] arm64: compat: Expose signal related structures Vincenzo Frascino
2019-06-21  9:52 ` [PATCH v7 08/25] arm64: compat: Generate asm offsets for signals Vincenzo Frascino
2019-06-21  9:52 ` [PATCH v7 09/25] lib: vdso: Add compat support Vincenzo Frascino
2019-06-21  9:52 ` [PATCH v7 10/25] arm64: compat: Add vDSO Vincenzo Frascino
2019-06-24 14:00   ` Catalin Marinas
2019-07-10  4:02   ` John Stultz
2019-07-10  6:12     ` Thomas Gleixner
2019-07-10  9:48       ` Vincenzo Frascino
2019-07-10  8:27     ` Will Deacon
2019-07-10  8:58       ` Thomas Gleixner
2019-07-10  9:12         ` Will Deacon
2019-07-10  9:47     ` Vincenzo Frascino
2019-07-10 13:41       ` Vincenzo Frascino
2019-07-10 13:04   ` [PATCH] arm64: vdso: Fix ABI regression in compat vdso Vincenzo Frascino
2019-07-10 13:25     ` Will Deacon
2019-07-10 13:42       ` Vincenzo Frascino
2019-07-10 14:01   ` [PATCH v2] " Vincenzo Frascino
2019-07-10 15:44     ` John Stultz
2019-07-10 15:53       ` Vincenzo Frascino
2019-07-11  9:45     ` Will Deacon
2019-07-11 10:34       ` Thomas Gleixner
2019-07-11 11:32         ` Will Deacon
2019-06-21  9:52 ` [PATCH v7 11/25] arm64: Refactor vDSO code Vincenzo Frascino
2019-06-21  9:52 ` [PATCH v7 12/25] arm64: compat: vDSO setup for compat layer Vincenzo Frascino
2019-06-21  9:52 ` [PATCH v7 13/25] arm64: elf: vDSO code page discovery Vincenzo Frascino
2019-06-21  9:52 ` [PATCH v7 14/25] arm64: compat: Get sigreturn trampolines from vDSO Vincenzo Frascino
2019-06-21  9:52 ` [PATCH v7 15/25] arm64: Add vDSO compat support Vincenzo Frascino
2019-06-21  9:52 ` [PATCH v7 16/25] arm: Add support for generic vDSO Vincenzo Frascino
2019-12-04 13:51   ` [PATCH v7 16/25] arm: Add support for generic vDSO (causing crash) Guenter Roeck
2019-12-04 13:58     ` Vincenzo Frascino
2019-12-04 16:16       ` Guenter Roeck
2019-12-04 17:15         ` Vincenzo Frascino
2019-12-04 19:39           ` Guenter Roeck
2019-12-05  9:42           ` Philippe Mathieu-Daudé
2019-12-05 10:00             ` Vincenzo Frascino
2019-12-05 11:02               ` Arnd Bergmann
2019-12-05 14:56                 ` Philippe Mathieu-Daudé
2019-06-21  9:52 ` [PATCH v7 17/25] arm: Add clock_getres entry point Vincenzo Frascino
2019-06-21  9:52 ` [PATCH v7 18/25] arm: Add clock_gettime64 " Vincenzo Frascino
2019-06-21  9:52 ` [PATCH v7 19/25] mips: Add support for generic vDSO Vincenzo Frascino
2019-07-26  5:15   ` Paul Burton
2019-07-26 16:29     ` [PATCH 0/2] mips: vdso: Fix Makefile Vincenzo Frascino
2019-07-26 16:29       ` [PATCH 1/2] mips: vdso: Fix source path Vincenzo Frascino
2019-07-26 16:29       ` [PATCH 2/2] mips: vdso: Fix flip/flop vdso building bug Vincenzo Frascino
2019-07-28 22:20       ` [PATCH 0/2] mips: vdso: Fix Makefile Paul Burton
2019-06-21  9:52 ` [PATCH v7 20/25] mips: Add clock_getres entry point Vincenzo Frascino
2019-07-26  5:15   ` Paul Burton
2019-06-21  9:52 ` [PATCH v7 21/25] mips: Add clock_gettime64 " Vincenzo Frascino
2019-07-26  5:15   ` Paul Burton
2019-06-21  9:52 ` [PATCH v7 22/25] x86: Add support for generic vDSO Vincenzo Frascino
2019-06-21  9:52 ` [PATCH v7 23/25] x86: Add clock_getres entry point Vincenzo Frascino
2019-06-21  9:52 ` [PATCH v7 24/25] x86: Add clock_gettime64 " Vincenzo Frascino
2019-06-21  9:52 ` Vincenzo Frascino [this message]
2019-06-24  0:34 ` [PATCH v7 00/25] Unify vDSOs across more architectures Thomas Gleixner
2019-06-24  1:15   ` Andy Lutomirski
2019-06-24  7:42     ` Thomas Gleixner
2019-06-24 13:21   ` Vincenzo Frascino
2019-06-24 14:18   ` Thomas Gleixner
2019-06-24 14:23     ` Russell King - ARM Linux admin
2019-06-24 14:49       ` Catalin Marinas
2019-06-24 16:20         ` Vincenzo Frascino
2019-10-25 11:42         ` Geert Uytterhoeven
2019-06-24 18:41   ` Paul Burton
2019-06-24 23:16     ` Vincenzo Frascino
2019-06-25 17:11       ` Paul Burton
2019-06-25 17:17         ` Vincenzo Frascino
2019-06-24 12:50 ` Andre Przywara

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Linux-MIPS Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-mips/0 linux-mips/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-mips linux-mips/ https://lore.kernel.org/linux-mips \
		linux-mips@vger.kernel.org
	public-inbox-index linux-mips

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-mips


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git