From patchwork Mon Aug 28 15:18:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Shuah Khan X-Patchwork-Id: 718078 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AF4D4C83F15 for ; Mon, 28 Aug 2023 15:19:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229705AbjH1PSm (ORCPT ); Mon, 28 Aug 2023 11:18:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43376 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231773AbjH1PST (ORCPT ); Mon, 28 Aug 2023 11:18:19 -0400 Received: from mail-il1-x136.google.com (mail-il1-x136.google.com [IPv6:2607:f8b0:4864:20::136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F121AE8 for ; Mon, 28 Aug 2023 08:18:11 -0700 (PDT) Received: by mail-il1-x136.google.com with SMTP id e9e14a558f8ab-34914064ea9so1909885ab.1 for ; Mon, 28 Aug 2023 08:18:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=google; t=1693235891; x=1693840691; h=cc:to:subject:from:content-language:user-agent:mime-version:date :message-id:from:to:cc:subject:date:message-id:reply-to; bh=z/bc+pRSaezRJep7824XfWtB4nuKUKOdebl9HF3noEc=; b=VLUHUjMkPClEDaKyV8gE7NMwdCz0MV1wJ6zfvSg9930MD3HWqLagRse0n3BCqImCC5 ydsyWI6VtY+yrm3WPH3KYZBV5lAYv3OdAoYFgTxw56pMhPgbrrS3GOE2jwh5jiaegNzI fAQS8yWlDnTKkizxeainX+QbreMfuLxeDKt5g= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1693235891; x=1693840691; h=cc:to:subject:from:content-language:user-agent:mime-version:date :message-id:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=z/bc+pRSaezRJep7824XfWtB4nuKUKOdebl9HF3noEc=; b=On6kCE2ObhAhUIAOgg/Y4xGsGA367b3aI/Xv5rorrr+VwRj3woG4E3tM3KeFj4zNor 3LmgxqBZowpz91wb8EQQAKgaP0lzLk7UBZ9s+Z75MUxTa+uTN4HjSq3IH3L8eyM5555I ELvcPeWnmpIaDbR+lvuot7zcgkFNnkZ4LM5iv7fZZf/hEvu/C2fU33+OfFx60Wvx3IX9 vvEHjV1+0pPyofCv8IQXoOdsQVnfBqK5JrywvxT1r7Xt4RALrQZUpreP9NxvGna4b1iB qvjyjGyHFSRjwnY0wCiewESMRYTJ6zydt3RZqI96/4K9J5mIBIhJy1icO1Xr7hwS1frc A7Sg== X-Gm-Message-State: AOJu0Yw1H3Z8epWsY+wIsrFZoU/zNhGyVVfUIoyuddstRIcHI0E6YzNZ Hy97CrPEkcx25K2LRisZB2ECZQ== X-Google-Smtp-Source: AGHT+IGFy+yhCNoUhxCpe7DFgPATsyqNHx+Fs4VucV+Bbud4NAMFKeI63qG2Bw+39Zxsk4jtcwSXbQ== X-Received: by 2002:a05:6602:2e13:b0:792:9b50:3c3d with SMTP id o19-20020a0566022e1300b007929b503c3dmr7836830iow.1.1693235891290; Mon, 28 Aug 2023 08:18:11 -0700 (PDT) Received: from [192.168.1.128] ([38.15.45.1]) by smtp.gmail.com with ESMTPSA id r7-20020a6b4407000000b00785cfdd968bsm2594328ioa.5.2023.08.28.08.18.10 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 28 Aug 2023 08:18:10 -0700 (PDT) Message-ID: <60f2cdf4-8d85-58ee-eb6c-ba15bb97d783@linuxfoundation.org> Date: Mon, 28 Aug 2023 09:18:10 -0600 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0 Content-Language: en-US From: Shuah Khan Subject: [GIT PULL] Kselftest update for Linux 6.6-rc1 To: Linus Torvalds Cc: shuah@kernel.org, skhan@linuxfoundation.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Hi Linus, Please pull the following Kselftest update for Linux 6.6-rc1. This Kselftest update for Linux 6.6-rc1 consists of a mix of fixes, enhancements, and new tests. Bulk of the changes enhance and fix rseq and resctrl tests. In addition, user_events, dmabuf-heaps and perf_events are added to default kselftest build and test coverage. A futex test fix, enhance prctl test coverage, and minor fixes are included in this update. diff is attached. thanks, -- Shuah ---------------------------------------------------------------- The following changes since commit 6eaae198076080886b9e7d57f4ae06fa782f90ef: Linux 6.5-rc3 (2023-07-23 15:24:10 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest tags/linux-kselftest-next-6.6-rc1 for you to fetch changes up to 9b1db732866bee060b9bca9493e5ebf5e8874c48: selftests: cachestat: use proper syscall number macro (2023-08-16 11:12:44 -0600) ---------------------------------------------------------------- linux-kselftest-next-6.6-rc1 This Kselftest update for Linux 6.6-rc1 consists of a mix of fixes, enhancements, and new tests. Bulk of the changes enhance and fix rseq and resctrl tests. In addition, user_events, dmabuf-heaps and perf_events are added to default kselftest build and test coverage. A futex test fix, enhance prctl test coverage, and minor fixes are included in this update. ---------------------------------------------------------------- Andre Przywara (2): selftests: cachestat: properly link in librt selftests: cachestat: use proper syscall number macro Hui Min Mina Chou (1): selftests/filesystems: Add six consecutive 'x' characters to mktemp Ilpo Järvinen (19): selftests/resctrl: Add resctrl.h into build deps selftests/resctrl: Don't leak buffer in fill_cache() selftests/resctrl: Unmount resctrl FS if child fails to run benchmark selftests/resctrl: Close perf value read fd on errors selftests/resctrl: Unmount resctrl FS before starting the first test selftests/resctrl: Move resctrl FS mount/umount to higher level selftests/resctrl: Refactor remount_resctrl(bool mum_resctrlfs) to mount_resctrl() selftests/resctrl: Remove mum_resctrlfs from struct resctrl_val_param selftests/resctrl: Convert span to size_t selftests/resctrl: Express span internally in bytes selftests/resctrl: Remove duplicated preparation for span arg selftests/resctrl: Remove "malloc_and_init_memory" param from run_fill_buf() selftests/resctrl: Remove unnecessary startptr global from fill_buf selftests/resctrl: Improve parameter consistency in fill_buf selftests/resctrl: Don't pass test name to fill_buf selftests/resctrl: Don't use variable argument list for ->setup() selftests/resctrl: Move CAT/CMT test global vars to function they are used in selftests/resctrl: Pass the real number of tests to show_cache_info() selftests/resctrl: Remove test type checks from cat_val() Mark Brown (2): selftests/user_events: Reenable build selftests: Hook more tests into the build infrastructure Mathieu Desnoyers (4): selftests/rseq: Fix CID_ID typo in Makefile selftests/rseq: Implement rseq_unqual_scalar_typeof selftests/rseq: Fix arm64 buggy load-acquire/store-release macros selftests/rseq: Use rseq_unqual_scalar_typeof in macros Nysal Jan K.A (1): selftests/futex: Order calls to futex_lock_pi Osama Muhammad (1): selftests: prctl: Add new prctl test for PR_SET_NAME Shuah Khan (2): selftests:prctl: Fix make clean override warning selftests:prctl: add set-process-name to .gitignore tools/testing/selftests/Makefile | 4 + tools/testing/selftests/cachestat/Makefile | 2 +- tools/testing/selftests/cachestat/test_cachestat.c | 7 +- .../selftests/filesystems/fat/run_fat_tests.sh | 2 +- .../futex/functional/futex_wait_timeout.c | 7 ++ tools/testing/selftests/prctl/.gitignore | 1 + tools/testing/selftests/prctl/Makefile | 4 +- tools/testing/selftests/prctl/set-process-name.c | 62 +++++++++++++++ tools/testing/selftests/resctrl/Makefile | 2 +- tools/testing/selftests/resctrl/cache.c | 66 ++++++++-------- tools/testing/selftests/resctrl/cat_test.c | 28 ++----- tools/testing/selftests/resctrl/cmt_test.c | 29 ++------ tools/testing/selftests/resctrl/fill_buf.c | 87 ++++++++-------------- tools/testing/selftests/resctrl/mba_test.c | 9 +-- tools/testing/selftests/resctrl/mbm_test.c | 17 ++--- tools/testing/selftests/resctrl/resctrl.h | 17 ++--- tools/testing/selftests/resctrl/resctrl_tests.c | 83 ++++++++++++++------- tools/testing/selftests/resctrl/resctrl_val.c | 7 +- tools/testing/selftests/resctrl/resctrlfs.c | 64 ++++++++-------- tools/testing/selftests/rseq/Makefile | 2 +- tools/testing/selftests/rseq/compiler.h | 26 +++++++ tools/testing/selftests/rseq/rseq-arm.h | 4 +- tools/testing/selftests/rseq/rseq-arm64.h | 58 ++++++++------- tools/testing/selftests/rseq/rseq-mips.h | 4 +- tools/testing/selftests/rseq/rseq-ppc.h | 4 +- tools/testing/selftests/rseq/rseq-riscv.h | 6 +- tools/testing/selftests/rseq/rseq-s390.h | 4 +- tools/testing/selftests/rseq/rseq-x86.h | 4 +- tools/testing/selftests/user_events/Makefile | 8 -- 29 files changed, 328 insertions(+), 290 deletions(-) create mode 100644 tools/testing/selftests/prctl/set-process-name.c ---------------------------------------------------------------- diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index 666b56f22a41..a8573a3a5430 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -12,6 +12,7 @@ TARGETS += core TARGETS += cpufreq TARGETS += cpu-hotplug TARGETS += damon +TARGETS += dmabuf-heaps TARGETS += drivers/dma-buf TARGETS += drivers/s390x/uvdevice TARGETS += drivers/net/bonding @@ -56,6 +57,7 @@ TARGETS += net/mptcp TARGETS += net/openvswitch TARGETS += netfilter TARGETS += nsfs +TARGETS += perf_events TARGETS += pidfd TARGETS += pid_namespace TARGETS += powerpc @@ -88,7 +90,9 @@ endif TARGETS += tmpfs TARGETS += tpm2 TARGETS += tty +TARGETS += uevents TARGETS += user +TARGETS += user_events TARGETS += vDSO TARGETS += mm TARGETS += x86 diff --git a/tools/testing/selftests/cachestat/Makefile b/tools/testing/selftests/cachestat/Makefile index fca73aaa7d14..778b54ebb036 100644 --- a/tools/testing/selftests/cachestat/Makefile +++ b/tools/testing/selftests/cachestat/Makefile @@ -3,6 +3,6 @@ TEST_GEN_PROGS := test_cachestat CFLAGS += $(KHDR_INCLUDES) CFLAGS += -Wall -CFLAGS += -lrt +LDLIBS += -lrt include ../lib.mk diff --git a/tools/testing/selftests/cachestat/test_cachestat.c b/tools/testing/selftests/cachestat/test_cachestat.c index 54d09b820ed4..a5a4ac8dcb76 100644 --- a/tools/testing/selftests/cachestat/test_cachestat.c +++ b/tools/testing/selftests/cachestat/test_cachestat.c @@ -19,7 +19,6 @@ static const char * const dev_files[] = { "/dev/zero", "/dev/null", "/dev/urandom", "/proc/version", "/proc" }; -static const int cachestat_nr = 451; void print_cachestat(struct cachestat *cs) { @@ -126,7 +125,7 @@ bool test_cachestat(const char *filename, bool write_random, bool create, } } - syscall_ret = syscall(cachestat_nr, fd, &cs_range, &cs, 0); + syscall_ret = syscall(__NR_cachestat, fd, &cs_range, &cs, 0); ksft_print_msg("Cachestat call returned %ld\n", syscall_ret); @@ -152,7 +151,7 @@ bool test_cachestat(const char *filename, bool write_random, bool create, ksft_print_msg("fsync fails.\n"); ret = false; } else { - syscall_ret = syscall(cachestat_nr, fd, &cs_range, &cs, 0); + syscall_ret = syscall(__NR_cachestat, fd, &cs_range, &cs, 0); ksft_print_msg("Cachestat call (after fsync) returned %ld\n", syscall_ret); @@ -213,7 +212,7 @@ bool test_cachestat_shmem(void) goto close_fd; } - syscall_ret = syscall(cachestat_nr, fd, &cs_range, &cs, 0); + syscall_ret = syscall(__NR_cachestat, fd, &cs_range, &cs, 0); if (syscall_ret) { ksft_print_msg("Cachestat returned non-zero.\n"); diff --git a/tools/testing/selftests/filesystems/fat/run_fat_tests.sh b/tools/testing/selftests/filesystems/fat/run_fat_tests.sh index 7f35dc3d15df..d61264d4795d 100755 --- a/tools/testing/selftests/filesystems/fat/run_fat_tests.sh +++ b/tools/testing/selftests/filesystems/fat/run_fat_tests.sh @@ -12,7 +12,7 @@ set -u set -o pipefail BASE_DIR="$(dirname $0)" -TMP_DIR="$(mktemp -d /tmp/fat_tests_tmp.XXXX)" +TMP_DIR="$(mktemp -d /tmp/fat_tests_tmp.XXXXXX)" IMG_PATH="${TMP_DIR}/fat.img" MNT_PATH="${TMP_DIR}/mnt" diff --git a/tools/testing/selftests/futex/functional/futex_wait_timeout.c b/tools/testing/selftests/futex/functional/futex_wait_timeout.c index 3651ce17beeb..d183f878360b 100644 --- a/tools/testing/selftests/futex/functional/futex_wait_timeout.c +++ b/tools/testing/selftests/futex/functional/futex_wait_timeout.c @@ -24,6 +24,7 @@ static long timeout_ns = 100000; /* 100us default timeout */ static futex_t futex_pi; +static pthread_barrier_t barrier; void usage(char *prog) { @@ -48,6 +49,8 @@ void *get_pi_lock(void *arg) if (ret != 0) error("futex_lock_pi failed\n", ret); + pthread_barrier_wait(&barrier); + /* Blocks forever */ ret = futex_wait(&lock, 0, NULL, 0); error("futex_wait failed\n", ret); @@ -130,6 +133,7 @@ int main(int argc, char *argv[]) basename(argv[0])); ksft_print_msg("\tArguments: timeout=%ldns\n", timeout_ns); + pthread_barrier_init(&barrier, NULL, 2); pthread_create(&thread, NULL, get_pi_lock, NULL); /* initialize relative timeout */ @@ -163,6 +167,9 @@ int main(int argc, char *argv[]) res = futex_wait_requeue_pi(&f1, f1, &futex_pi, &to, 0); test_timeout(res, &ret, "futex_wait_requeue_pi monotonic", ETIMEDOUT); + /* Wait until the other thread calls futex_lock_pi() */ + pthread_barrier_wait(&barrier); + pthread_barrier_destroy(&barrier); /* * FUTEX_LOCK_PI with CLOCK_REALTIME * Due to historical reasons, FUTEX_LOCK_PI supports only realtime diff --git a/tools/testing/selftests/prctl/.gitignore b/tools/testing/selftests/prctl/.gitignore index 7a657b25f686..05d5e31661df 100644 --- a/tools/testing/selftests/prctl/.gitignore +++ b/tools/testing/selftests/prctl/.gitignore @@ -3,3 +3,4 @@ disable-tsc-ctxt-sw-stress-test disable-tsc-on-off-stress-test disable-tsc-test set-anon-vma-name-test +set-process-name diff --git a/tools/testing/selftests/prctl/Makefile b/tools/testing/selftests/prctl/Makefile index c058b81eeb41..01dc90fbb509 100644 --- a/tools/testing/selftests/prctl/Makefile +++ b/tools/testing/selftests/prctl/Makefile @@ -5,12 +5,10 @@ ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/x86/ -e s/x86_64/x86/) ifeq ($(ARCH),x86) TEST_PROGS := disable-tsc-ctxt-sw-stress-test disable-tsc-on-off-stress-test \ - disable-tsc-test set-anon-vma-name-test + disable-tsc-test set-anon-vma-name-test set-process-name all: $(TEST_PROGS) include ../lib.mk -clean: - rm -fr $(TEST_PROGS) endif endif diff --git a/tools/testing/selftests/prctl/set-process-name.c b/tools/testing/selftests/prctl/set-process-name.c new file mode 100644 index 000000000000..3bc5e0e09eb9 --- /dev/null +++ b/tools/testing/selftests/prctl/set-process-name.c @@ -0,0 +1,62 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * This test covers the PR_SET_NAME functionality of prctl calls + */ + +#include +#include +#include + +#include "../kselftest_harness.h" + +#define CHANGE_NAME "changename" +#define EMPTY_NAME "" +#define TASK_COMM_LEN 16 + +int set_name(char *name) +{ + int res; + + res = prctl(PR_SET_NAME, name, NULL, NULL, NULL); + + if (res < 0) + return -errno; + return res; +} + +int check_is_name_correct(char *check_name) +{ + char name[TASK_COMM_LEN]; + int res; + + res = prctl(PR_GET_NAME, name, NULL, NULL, NULL); + + if (res < 0) + return -errno; + + return !strcmp(name, check_name); +} + +int check_null_pointer(char *check_name) +{ + char *name = NULL; + int res; + + res = prctl(PR_GET_NAME, name, NULL, NULL, NULL); + + return res; +} + +TEST(rename_process) { + + EXPECT_GE(set_name(CHANGE_NAME), 0); + EXPECT_TRUE(check_is_name_correct(CHANGE_NAME)); + + EXPECT_GE(set_name(EMPTY_NAME), 0); + EXPECT_TRUE(check_is_name_correct(EMPTY_NAME)); + + EXPECT_GE(set_name(CHANGE_NAME), 0); + EXPECT_LT(check_null_pointer(CHANGE_NAME), 0); +} + +TEST_HARNESS_MAIN diff --git a/tools/testing/selftests/resctrl/Makefile b/tools/testing/selftests/resctrl/Makefile index 73d53257df42..5073dbc96125 100644 --- a/tools/testing/selftests/resctrl/Makefile +++ b/tools/testing/selftests/resctrl/Makefile @@ -7,4 +7,4 @@ TEST_GEN_PROGS := resctrl_tests include ../lib.mk -$(OUTPUT)/resctrl_tests: $(wildcard *.c) +$(OUTPUT)/resctrl_tests: $(wildcard *.[ch]) diff --git a/tools/testing/selftests/resctrl/cache.c b/tools/testing/selftests/resctrl/cache.c index 8a4fe8693be6..d3cbb829ff6a 100644 --- a/tools/testing/selftests/resctrl/cache.c +++ b/tools/testing/selftests/resctrl/cache.c @@ -87,21 +87,19 @@ static int reset_enable_llc_perf(pid_t pid, int cpu_no) static int get_llc_perf(unsigned long *llc_perf_miss) { __u64 total_misses; + int ret; /* Stop counters after one span to get miss rate */ ioctl(fd_lm, PERF_EVENT_IOC_DISABLE, 0); - if (read(fd_lm, &rf_cqm, sizeof(struct read_format)) == -1) { + ret = read(fd_lm, &rf_cqm, sizeof(struct read_format)); + if (ret == -1) { perror("Could not get llc misses through perf"); - return -1; } total_misses = rf_cqm.values[0].value; - - close(fd_lm); - *llc_perf_miss = total_misses; return 0; @@ -212,7 +210,7 @@ int measure_cache_vals(struct resctrl_val_param *param, int bm_pid) */ int cat_val(struct resctrl_val_param *param) { - int malloc_and_init_memory = 1, memflush = 1, operation = 0, ret = 0; + int memflush = 1, operation = 0, ret = 0; char *resctrl_val = param->resctrl_val; pid_t bm_pid; @@ -232,40 +230,38 @@ int cat_val(struct resctrl_val_param *param) if (ret) return ret; - if (!strncmp(resctrl_val, CAT_STR, sizeof(CAT_STR))) - initialize_llc_perf(); + initialize_llc_perf(); /* Test runs until the callback setup() tells the test to stop. */ while (1) { - if (!strncmp(resctrl_val, CAT_STR, sizeof(CAT_STR))) { - ret = param->setup(1, param); - if (ret == END_OF_TESTS) { - ret = 0; - break; - } - if (ret < 0) - break; - ret = reset_enable_llc_perf(bm_pid, param->cpu_no); - if (ret) - break; - - if (run_fill_buf(param->span, malloc_and_init_memory, - memflush, operation, resctrl_val)) { - fprintf(stderr, "Error-running fill buffer\n"); - ret = -1; - break; - } - - sleep(1); - ret = measure_cache_vals(param, bm_pid); - if (ret) - break; - } else { + ret = param->setup(param); + if (ret == END_OF_TESTS) { + ret = 0; + break; + } + if (ret < 0) + break; + ret = reset_enable_llc_perf(bm_pid, param->cpu_no); + if (ret) break; + + if (run_fill_buf(param->span, memflush, operation, true)) { + fprintf(stderr, "Error-running fill buffer\n"); + ret = -1; + goto pe_close; } + + sleep(1); + ret = measure_cache_vals(param, bm_pid); + if (ret) + goto pe_close; } return ret; + +pe_close: + close(fd_lm); + return ret; } /* @@ -282,7 +278,7 @@ int cat_val(struct resctrl_val_param *param) * Return: 0 on success. non-zero on failure. */ int show_cache_info(unsigned long sum_llc_val, int no_of_bits, - unsigned long cache_span, unsigned long max_diff, + size_t cache_span, unsigned long max_diff, unsigned long max_diff_percent, unsigned long num_of_runs, bool platform, bool cmt) { @@ -291,7 +287,7 @@ int show_cache_info(unsigned long sum_llc_val, int no_of_bits, long avg_diff = 0; int ret; - avg_llc_val = sum_llc_val / (num_of_runs - 1); + avg_llc_val = sum_llc_val / num_of_runs; avg_diff = (long)abs(cache_span - avg_llc_val); diff_percent = ((float)cache_span - avg_llc_val) / cache_span * 100; @@ -304,7 +300,7 @@ int show_cache_info(unsigned long sum_llc_val, int no_of_bits, ksft_print_msg("Percent diff=%d\n", abs((int)diff_percent)); ksft_print_msg("Number of bits: %d\n", no_of_bits); ksft_print_msg("Average LLC val: %lu\n", avg_llc_val); - ksft_print_msg("Cache span (%s): %lu\n", cmt ? "bytes" : "lines", + ksft_print_msg("Cache span (%s): %zu\n", cmt ? "bytes" : "lines", cache_span); return ret; diff --git a/tools/testing/selftests/resctrl/cat_test.c b/tools/testing/selftests/resctrl/cat_test.c index fb1443f888c4..3848dfb46aba 100644 --- a/tools/testing/selftests/resctrl/cat_test.c +++ b/tools/testing/selftests/resctrl/cat_test.c @@ -17,27 +17,16 @@ #define MAX_DIFF_PERCENT 4 #define MAX_DIFF 1000000 -static int count_of_bits; -static char cbm_mask[256]; -static unsigned long long_mask; -static unsigned long cache_size; - /* * Change schemata. Write schemata to specified * con_mon grp, mon_grp in resctrl FS. * Run 5 times in order to get average values. */ -static int cat_setup(int num, ...) +static int cat_setup(struct resctrl_val_param *p) { - struct resctrl_val_param *p; char schemata[64]; - va_list param; int ret = 0; - va_start(param, num); - p = va_arg(param, struct resctrl_val_param *); - va_end(param); - /* Run NUM_OF_RUNS times */ if (p->num_of_runs >= NUM_OF_RUNS) return END_OF_TESTS; @@ -88,7 +77,7 @@ static int check_results(struct resctrl_val_param *param) no_of_bits = count_bits(param->mask); return show_cache_info(sum_llc_perf_miss, no_of_bits, param->span / 64, - MAX_DIFF, MAX_DIFF_PERCENT, NUM_OF_RUNS, + MAX_DIFF, MAX_DIFF_PERCENT, runs - 1, get_vendor() == ARCH_INTEL, false); } @@ -102,14 +91,12 @@ int cat_perf_miss_val(int cpu_no, int n, char *cache_type) { unsigned long l_mask, l_mask_1; int ret, pipefd[2], sibling_cpu_no; + unsigned long cache_size = 0; + unsigned long long_mask; + char cbm_mask[256]; + int count_of_bits; char pipe_message; - cache_size = 0; - - ret = remount_resctrlfs(true); - if (ret) - return ret; - /* Get default cbm mask for L3/L2 cache */ ret = get_cbm_mask(cache_type, cbm_mask); if (ret) @@ -144,7 +131,6 @@ int cat_perf_miss_val(int cpu_no, int n, char *cache_type) struct resctrl_val_param param = { .resctrl_val = CAT_STR, .cpu_no = cpu_no, - .mum_resctrlfs = false, .setup = cat_setup, }; @@ -227,8 +213,6 @@ int cat_perf_miss_val(int cpu_no, int n, char *cache_type) out: cat_test_cleanup(); - if (bm_pid) - umount_resctrlfs(); return ret; } diff --git a/tools/testing/selftests/resctrl/cmt_test.c b/tools/testing/selftests/resctrl/cmt_test.c index af71b2141271..cb2197647c6c 100644 --- a/tools/testing/selftests/resctrl/cmt_test.c +++ b/tools/testing/selftests/resctrl/cmt_test.c @@ -16,20 +16,8 @@ #define MAX_DIFF 2000000 #define MAX_DIFF_PERCENT 15 -static int count_of_bits; -static char cbm_mask[256]; -static unsigned long long_mask; -static unsigned long cache_size; - -static int cmt_setup(int num, ...) +static int cmt_setup(struct resctrl_val_param *p) { - struct resctrl_val_param *p; - va_list param; - - va_start(param, num); - p = va_arg(param, struct resctrl_val_param *); - va_end(param); - /* Run NUM_OF_RUNS times */ if (p->num_of_runs >= NUM_OF_RUNS) return END_OF_TESTS; @@ -71,7 +59,7 @@ static int check_results(struct resctrl_val_param *param, int no_of_bits) fclose(fp); return show_cache_info(sum_llc_occu_resc, no_of_bits, param->span, - MAX_DIFF, MAX_DIFF_PERCENT, NUM_OF_RUNS, + MAX_DIFF, MAX_DIFF_PERCENT, runs - 1, true, true); } @@ -82,14 +70,12 @@ void cmt_test_cleanup(void) int cmt_resctrl_val(int cpu_no, int n, char **benchmark_cmd) { + unsigned long cache_size = 0; + unsigned long long_mask; + char cbm_mask[256]; + int count_of_bits; int ret; - cache_size = 0; - - ret = remount_resctrlfs(true); - if (ret) - return ret; - if (!validate_resctrl_feature_request(CMT_STR)) return -1; @@ -117,7 +103,6 @@ int cmt_resctrl_val(int cpu_no, int n, char **benchmark_cmd) .ctrlgrp = "c1", .mongrp = "m1", .cpu_no = cpu_no, - .mum_resctrlfs = false, .filename = RESULT_FILE_NAME, .mask = ~(long_mask << n) & long_mask, .span = cache_size * n / count_of_bits, @@ -126,7 +111,7 @@ int cmt_resctrl_val(int cpu_no, int n, char **benchmark_cmd) }; if (strcmp(benchmark_cmd[0], "fill_buf") == 0) - sprintf(benchmark_cmd[1], "%lu", param.span); + sprintf(benchmark_cmd[1], "%zu", param.span); remove(RESULT_FILE_NAME); diff --git a/tools/testing/selftests/resctrl/fill_buf.c b/tools/testing/selftests/resctrl/fill_buf.c index 341cc93ca84c..0d425f26583a 100644 --- a/tools/testing/selftests/resctrl/fill_buf.c +++ b/tools/testing/selftests/resctrl/fill_buf.c @@ -22,8 +22,6 @@ #define PAGE_SIZE (4 * 1024) #define MB (1024 * 1024) -static unsigned char *startptr; - static void sb(void) { #if defined(__i386) || defined(__x86_64) @@ -40,32 +38,32 @@ static void cl_flush(void *p) #endif } -static void mem_flush(void *p, size_t s) +static void mem_flush(unsigned char *buf, size_t buf_size) { - char *cp = (char *)p; + unsigned char *cp = buf; size_t i = 0; - s = s / CL_SIZE; /* mem size in cache llines */ + buf_size = buf_size / CL_SIZE; /* mem size in cache lines */ - for (i = 0; i < s; i++) + for (i = 0; i < buf_size; i++) cl_flush(&cp[i * CL_SIZE]); sb(); } -static void *malloc_and_init_memory(size_t s) +static void *malloc_and_init_memory(size_t buf_size) { void *p = NULL; uint64_t *p64; size_t s64; int ret; - ret = posix_memalign(&p, PAGE_SIZE, s); + ret = posix_memalign(&p, PAGE_SIZE, buf_size); if (ret < 0) return NULL; p64 = (uint64_t *)p; - s64 = s / sizeof(uint64_t); + s64 = buf_size / sizeof(uint64_t); while (s64 > 0) { *p64 = (uint64_t)rand(); @@ -76,12 +74,13 @@ static void *malloc_and_init_memory(size_t s) return p; } -static int fill_one_span_read(unsigned char *start_ptr, unsigned char *end_ptr) +static int fill_one_span_read(unsigned char *buf, size_t buf_size) { + unsigned char *end_ptr = buf + buf_size; unsigned char sum, *p; sum = 0; - p = start_ptr; + p = buf; while (p < end_ptr) { sum += *p; p += (CL_SIZE / 2); @@ -90,27 +89,26 @@ static int fill_one_span_read(unsigned char *start_ptr, unsigned char *end_ptr) return sum; } -static -void fill_one_span_write(unsigned char *start_ptr, unsigned char *end_ptr) +static void fill_one_span_write(unsigned char *buf, size_t buf_size) { + unsigned char *end_ptr = buf + buf_size; unsigned char *p; - p = start_ptr; + p = buf; while (p < end_ptr) { *p = '1'; p += (CL_SIZE / 2); } } -static int fill_cache_read(unsigned char *start_ptr, unsigned char *end_ptr, - char *resctrl_val) +static int fill_cache_read(unsigned char *buf, size_t buf_size, bool once) { int ret = 0; FILE *fp; while (1) { - ret = fill_one_span_read(start_ptr, end_ptr); - if (!strncmp(resctrl_val, CAT_STR, sizeof(CAT_STR))) + ret = fill_one_span_read(buf, buf_size); + if (once) break; } @@ -126,75 +124,52 @@ static int fill_cache_read(unsigned char *start_ptr, unsigned char *end_ptr, return 0; } -static int fill_cache_write(unsigned char *start_ptr, unsigned char *end_ptr, - char *resctrl_val) +static int fill_cache_write(unsigned char *buf, size_t buf_size, bool once) { while (1) { - fill_one_span_write(start_ptr, end_ptr); - if (!strncmp(resctrl_val, CAT_STR, sizeof(CAT_STR))) + fill_one_span_write(buf, buf_size); + if (once) break; } return 0; } -static int -fill_cache(unsigned long long buf_size, int malloc_and_init, int memflush, - int op, char *resctrl_val) +static int fill_cache(size_t buf_size, int memflush, int op, bool once) { - unsigned char *start_ptr, *end_ptr; - unsigned long long i; + unsigned char *buf; int ret; - if (malloc_and_init) - start_ptr = malloc_and_init_memory(buf_size); - else - start_ptr = malloc(buf_size); - - if (!start_ptr) + buf = malloc_and_init_memory(buf_size); + if (!buf) return -1; - startptr = start_ptr; - end_ptr = start_ptr + buf_size; - - /* - * It's better to touch the memory once to avoid any compiler - * optimizations - */ - if (!malloc_and_init) { - for (i = 0; i < buf_size; i++) - *start_ptr++ = (unsigned char)rand(); - } - - start_ptr = startptr; - /* Flush the memory before using to avoid "cache hot pages" effect */ if (memflush) - mem_flush(start_ptr, buf_size); + mem_flush(buf, buf_size); if (op == 0) - ret = fill_cache_read(start_ptr, end_ptr, resctrl_val); + ret = fill_cache_read(buf, buf_size, once); else - ret = fill_cache_write(start_ptr, end_ptr, resctrl_val); + ret = fill_cache_write(buf, buf_size, once); + + free(buf); if (ret) { printf("\n Error in fill cache read/write...\n"); return -1; } - free(startptr); return 0; } -int run_fill_buf(unsigned long span, int malloc_and_init_memory, - int memflush, int op, char *resctrl_val) +int run_fill_buf(size_t span, int memflush, int op, bool once) { - unsigned long long cache_size = span; + size_t cache_size = span; int ret; - ret = fill_cache(cache_size, malloc_and_init_memory, memflush, op, - resctrl_val); + ret = fill_cache(cache_size, memflush, op, once); if (ret) { printf("\n Error in fill cache\n"); return -1; diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/selftests/resctrl/mba_test.c index cde3781a9ab0..4d2f145804b8 100644 --- a/tools/testing/selftests/resctrl/mba_test.c +++ b/tools/testing/selftests/resctrl/mba_test.c @@ -22,18 +22,12 @@ * con_mon grp, mon_grp in resctrl FS. * For each allocation, run 5 times in order to get average values. */ -static int mba_setup(int num, ...) +static int mba_setup(struct resctrl_val_param *p) { static int runs_per_allocation, allocation = 100; - struct resctrl_val_param *p; char allocation_str[64]; - va_list param; int ret; - va_start(param, num); - p = va_arg(param, struct resctrl_val_param *); - va_end(param); - if (runs_per_allocation >= NUM_OF_RUNS) runs_per_allocation = 0; @@ -154,7 +148,6 @@ int mba_schemata_change(int cpu_no, char *bw_report, char **benchmark_cmd) .ctrlgrp = "c1", .mongrp = "m1", .cpu_no = cpu_no, - .mum_resctrlfs = true, .filename = RESULT_FILE_NAME, .bw_report = bw_report, .setup = mba_setup diff --git a/tools/testing/selftests/resctrl/mbm_test.c b/tools/testing/selftests/resctrl/mbm_test.c index 538d35a6485a..c7de6f5977f6 100644 --- a/tools/testing/selftests/resctrl/mbm_test.c +++ b/tools/testing/selftests/resctrl/mbm_test.c @@ -15,7 +15,7 @@ #define NUM_OF_RUNS 5 static int -show_bw_info(unsigned long *bw_imc, unsigned long *bw_resc, int span) +show_bw_info(unsigned long *bw_imc, unsigned long *bw_resc, size_t span) { unsigned long avg_bw_imc = 0, avg_bw_resc = 0; unsigned long sum_bw_imc = 0, sum_bw_resc = 0; @@ -40,14 +40,14 @@ show_bw_info(unsigned long *bw_imc, unsigned long *bw_resc, int span) ksft_print_msg("%s Check MBM diff within %d%%\n", ret ? "Fail:" : "Pass:", MAX_DIFF_PERCENT); ksft_print_msg("avg_diff_per: %d%%\n", avg_diff_per); - ksft_print_msg("Span (MB): %d\n", span); + ksft_print_msg("Span (MB): %zu\n", span / MB); ksft_print_msg("avg_bw_imc: %lu\n", avg_bw_imc); ksft_print_msg("avg_bw_resc: %lu\n", avg_bw_resc); return ret; } -static int check_results(int span) +static int check_results(size_t span) { unsigned long bw_imc[NUM_OF_RUNS], bw_resc[NUM_OF_RUNS]; char temp[1024], *token_array[8]; @@ -86,16 +86,10 @@ static int check_results(int span) return ret; } -static int mbm_setup(int num, ...) +static int mbm_setup(struct resctrl_val_param *p) { - struct resctrl_val_param *p; - va_list param; int ret = 0; - va_start(param, num); - p = va_arg(param, struct resctrl_val_param *); - va_end(param); - /* Run NUM_OF_RUNS times */ if (p->num_of_runs >= NUM_OF_RUNS) return END_OF_TESTS; @@ -115,7 +109,7 @@ void mbm_test_cleanup(void) remove(RESULT_FILE_NAME); } -int mbm_bw_change(int span, int cpu_no, char *bw_report, char **benchmark_cmd) +int mbm_bw_change(size_t span, int cpu_no, char *bw_report, char **benchmark_cmd) { struct resctrl_val_param param = { .resctrl_val = MBM_STR, @@ -123,7 +117,6 @@ int mbm_bw_change(int span, int cpu_no, char *bw_report, char **benchmark_cmd) .mongrp = "m1", .span = span, .cpu_no = cpu_no, - .mum_resctrlfs = true, .filename = RESULT_FILE_NAME, .bw_report = bw_report, .setup = mbm_setup diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h index 87e39456dee0..838d1a438f33 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -3,7 +3,6 @@ #ifndef RESCTRL_H #define RESCTRL_H #include -#include #include #include #include @@ -43,6 +42,7 @@ do { \ perror(err_msg); \ kill(ppid, SIGKILL); \ + umount_resctrlfs(); \ exit(EXIT_FAILURE); \ } while (0) @@ -53,7 +53,6 @@ * @mongrp: Name of the monitor group (mon grp) * @cpu_no: CPU number to which the benchmark would be binded * @span: Memory bytes accessed in each benchmark iteration - * @mum_resctrlfs: Should the resctrl FS be remounted? * @filename: Name of file to which the o/p should be written * @bw_report: Bandwidth report type (reads vs writes) * @setup: Call back function to setup test environment @@ -63,13 +62,12 @@ struct resctrl_val_param { char ctrlgrp[64]; char mongrp[64]; int cpu_no; - unsigned long span; - bool mum_resctrlfs; + size_t span; char filename[64]; char *bw_report; unsigned long mask; int num_of_runs; - int (*setup)(int num, ...); + int (*setup)(struct resctrl_val_param *param); }; #define MBM_STR "mbm" @@ -84,8 +82,8 @@ extern char llc_occup_path[1024]; int get_vendor(void); bool check_resctrlfs_support(void); int filter_dmesg(void); -int remount_resctrlfs(bool mum_resctrlfs); int get_resource_id(int cpu_no, int *resource_id); +int mount_resctrlfs(void); int umount_resctrlfs(void); int validate_bw_report_request(char *bw_report); bool validate_resctrl_feature_request(const char *resctrl_val); @@ -98,10 +96,9 @@ int write_bm_pid_to_resctrl(pid_t bm_pid, char *ctrlgrp, char *mongrp, char *resctrl_val); int perf_event_open(struct perf_event_attr *hw_event, pid_t pid, int cpu, int group_fd, unsigned long flags); -int run_fill_buf(unsigned long span, int malloc_and_init_memory, int memflush, - int op, char *resctrl_va); +int run_fill_buf(size_t span, int memflush, int op, bool once); int resctrl_val(char **benchmark_cmd, struct resctrl_val_param *param); -int mbm_bw_change(int span, int cpu_no, char *bw_report, char **benchmark_cmd); +int mbm_bw_change(size_t span, int cpu_no, char *bw_report, char **benchmark_cmd); void tests_cleanup(void); void mbm_test_cleanup(void); int mba_schemata_change(int cpu_no, char *bw_report, char **benchmark_cmd); @@ -120,7 +117,7 @@ void cmt_test_cleanup(void); int get_core_sibling(int cpu_no); int measure_cache_vals(struct resctrl_val_param *param, int bm_pid); int show_cache_info(unsigned long sum_llc_val, int no_of_bits, - unsigned long cache_span, unsigned long max_diff, + size_t cache_span, unsigned long max_diff, unsigned long max_diff_percent, unsigned long num_of_runs, bool platform, bool cmt); diff --git a/tools/testing/selftests/resctrl/resctrl_tests.c b/tools/testing/selftests/resctrl/resctrl_tests.c index 9b9751206e1c..d511daeb6851 100644 --- a/tools/testing/selftests/resctrl/resctrl_tests.c +++ b/tools/testing/selftests/resctrl/resctrl_tests.c @@ -70,60 +70,81 @@ void tests_cleanup(void) cat_test_cleanup(); } -static void run_mbm_test(bool has_ben, char **benchmark_cmd, int span, +static void run_mbm_test(char **benchmark_cmd, size_t span, int cpu_no, char *bw_report) { int res; ksft_print_msg("Starting MBM BW change ...\n"); + res = mount_resctrlfs(); + if (res) { + ksft_exit_fail_msg("Failed to mount resctrl FS\n"); + return; + } + if (!validate_resctrl_feature_request(MBM_STR) || (get_vendor() != ARCH_INTEL)) { ksft_test_result_skip("Hardware does not support MBM or MBM is disabled\n"); - return; + goto umount; } - if (!has_ben) - sprintf(benchmark_cmd[5], "%s", MBA_STR); res = mbm_bw_change(span, cpu_no, bw_report, benchmark_cmd); ksft_test_result(!res, "MBM: bw change\n"); if ((get_vendor() == ARCH_INTEL) && res) ksft_print_msg("Intel MBM may be inaccurate when Sub-NUMA Clustering is enabled. Check BIOS configuration.\n"); + +umount: + umount_resctrlfs(); } -static void run_mba_test(bool has_ben, char **benchmark_cmd, int span, - int cpu_no, char *bw_report) +static void run_mba_test(char **benchmark_cmd, int cpu_no, char *bw_report) { int res; ksft_print_msg("Starting MBA Schemata change ...\n"); + res = mount_resctrlfs(); + if (res) { + ksft_exit_fail_msg("Failed to mount resctrl FS\n"); + return; + } + if (!validate_resctrl_feature_request(MBA_STR) || (get_vendor() != ARCH_INTEL)) { ksft_test_result_skip("Hardware does not support MBA or MBA is disabled\n"); - return; + goto umount; } - if (!has_ben) - sprintf(benchmark_cmd[1], "%d", span); res = mba_schemata_change(cpu_no, bw_report, benchmark_cmd); ksft_test_result(!res, "MBA: schemata change\n"); + +umount: + umount_resctrlfs(); } -static void run_cmt_test(bool has_ben, char **benchmark_cmd, int cpu_no) +static void run_cmt_test(char **benchmark_cmd, int cpu_no) { int res; ksft_print_msg("Starting CMT test ...\n"); + + res = mount_resctrlfs(); + if (res) { + ksft_exit_fail_msg("Failed to mount resctrl FS\n"); + return; + } + if (!validate_resctrl_feature_request(CMT_STR)) { ksft_test_result_skip("Hardware does not support CMT or CMT is disabled\n"); - return; + goto umount; } - if (!has_ben) - sprintf(benchmark_cmd[5], "%s", CMT_STR); res = cmt_resctrl_val(cpu_no, 5, benchmark_cmd); ksft_test_result(!res, "CMT: test\n"); if ((get_vendor() == ARCH_INTEL) && res) ksft_print_msg("Intel CMT may be inaccurate when Sub-NUMA Clustering is enabled. Check BIOS configuration.\n"); + +umount: + umount_resctrlfs(); } static void run_cat_test(int cpu_no, int no_of_bits) @@ -132,22 +153,32 @@ static void run_cat_test(int cpu_no, int no_of_bits) ksft_print_msg("Starting CAT test ...\n"); + res = mount_resctrlfs(); + if (res) { + ksft_exit_fail_msg("Failed to mount resctrl FS\n"); + return; + } + if (!validate_resctrl_feature_request(CAT_STR)) { ksft_test_result_skip("Hardware does not support CAT or CAT is disabled\n"); - return; + goto umount; } res = cat_perf_miss_val(cpu_no, no_of_bits, "L3"); ksft_test_result(!res, "CAT: test\n"); + +umount: + umount_resctrlfs(); } int main(int argc, char **argv) { bool has_ben = false, mbm_test = true, mba_test = true, cmt_test = true; - int c, cpu_no = 1, span = 250, argc_new = argc, i, no_of_bits = 0; char *benchmark_cmd[BENCHMARK_ARGS], bw_report[64], bm_type[64]; char benchmark_cmd_area[BENCHMARK_ARGS][BENCHMARK_ARG_SIZE]; + int c, cpu_no = 1, argc_new = argc, i, no_of_bits = 0; int ben_ind, ben_count, tests = 0; + size_t span = 250 * MB; bool cat_test = true; for (i = 0; i < argc; i++) { @@ -232,16 +263,15 @@ int main(int argc, char **argv) benchmark_cmd[ben_count] = NULL; } else { /* If no benchmark is given by "-b" argument, use fill_buf. */ - for (i = 0; i < 6; i++) + for (i = 0; i < 5; i++) benchmark_cmd[i] = benchmark_cmd_area[i]; strcpy(benchmark_cmd[0], "fill_buf"); - sprintf(benchmark_cmd[1], "%d", span); + sprintf(benchmark_cmd[1], "%zu", span); strcpy(benchmark_cmd[2], "1"); - strcpy(benchmark_cmd[3], "1"); - strcpy(benchmark_cmd[4], "0"); - strcpy(benchmark_cmd[5], ""); - benchmark_cmd[6] = NULL; + strcpy(benchmark_cmd[3], "0"); + strcpy(benchmark_cmd[4], "false"); + benchmark_cmd[5] = NULL; } sprintf(bw_report, "reads"); @@ -250,23 +280,24 @@ int main(int argc, char **argv) if (!check_resctrlfs_support()) return ksft_exit_skip("resctrl FS does not exist. Enable X86_CPU_RESCTRL config option.\n"); + if (umount_resctrlfs()) + return ksft_exit_skip("resctrl FS unmount failed.\n"); + filter_dmesg(); ksft_set_plan(tests ? : 4); if (mbm_test) - run_mbm_test(has_ben, benchmark_cmd, span, cpu_no, bw_report); + run_mbm_test(benchmark_cmd, span, cpu_no, bw_report); if (mba_test) - run_mba_test(has_ben, benchmark_cmd, span, cpu_no, bw_report); + run_mba_test(benchmark_cmd, cpu_no, bw_report); if (cmt_test) - run_cmt_test(has_ben, benchmark_cmd, cpu_no); + run_cmt_test(benchmark_cmd, cpu_no); if (cat_test) run_cat_test(cpu_no, no_of_bits); - umount_resctrlfs(); - ksft_finished(); } diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c index ab1eab1e7ff6..f0f6c5f6e98b 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -648,10 +648,6 @@ int resctrl_val(char **benchmark_cmd, struct resctrl_val_param *param) return ret; } - ret = remount_resctrlfs(param->mum_resctrlfs); - if (ret) - return ret; - /* * If benchmark wasn't successfully started by child, then child should * kill parent, so save parent's pid @@ -763,7 +759,7 @@ int resctrl_val(char **benchmark_cmd, struct resctrl_val_param *param) /* Test runs until the callback setup() tells the test to stop. */ while (1) { - ret = param->setup(1, param); + ret = param->setup(param); if (ret == END_OF_TESTS) { ret = 0; break; @@ -788,7 +784,6 @@ int resctrl_val(char **benchmark_cmd, struct resctrl_val_param *param) signal_handler_unregister(); out: kill(bm_pid, SIGKILL); - umount_resctrlfs(); return ret; } diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c index fb00245dee92..bd36ee206602 100644 --- a/tools/testing/selftests/resctrl/resctrlfs.c +++ b/tools/testing/selftests/resctrl/resctrlfs.c @@ -48,29 +48,20 @@ static int find_resctrl_mount(char *buffer) } /* - * remount_resctrlfs - Remount resctrl FS at /sys/fs/resctrl - * @mum_resctrlfs: Should the resctrl FS be remounted? + * mount_resctrlfs - Mount resctrl FS at /sys/fs/resctrl * - * If not mounted, mount it. - * If mounted and mum_resctrlfs then remount resctrl FS. - * If mounted and !mum_resctrlfs then noop + * Mounts resctrl FS. Fails if resctrl FS is already mounted to avoid + * pre-existing settings interfering with the test results. * * Return: 0 on success, non-zero on failure */ -int remount_resctrlfs(bool mum_resctrlfs) +int mount_resctrlfs(void) { - char mountpoint[256]; int ret; - ret = find_resctrl_mount(mountpoint); - if (ret) - strcpy(mountpoint, RESCTRL_PATH); - - if (!ret && mum_resctrlfs && umount(mountpoint)) - ksft_print_msg("Fail: unmounting \"%s\"\n", mountpoint); - - if (!ret && !mum_resctrlfs) - return 0; + ret = find_resctrl_mount(NULL); + if (ret != -ENOENT) + return -1; ksft_print_msg("Mounting resctrl to \"%s\"\n", RESCTRL_PATH); ret = mount("resctrl", RESCTRL_PATH, "resctrl", 0, NULL); @@ -82,10 +73,16 @@ int remount_resctrlfs(bool mum_resctrlfs) int umount_resctrlfs(void) { - if (find_resctrl_mount(NULL)) + char mountpoint[256]; + int ret; + + ret = find_resctrl_mount(mountpoint); + if (ret == -ENOENT) return 0; + if (ret) + return ret; - if (umount(RESCTRL_PATH)) { + if (umount(mountpoint)) { perror("# Unable to umount resctrl"); return errno; @@ -305,10 +302,10 @@ int taskset_benchmark(pid_t bm_pid, int cpu_no) */ void run_benchmark(int signum, siginfo_t *info, void *ucontext) { - int operation, ret, malloc_and_init_memory, memflush; - unsigned long span, buffer_span; + int operation, ret, memflush; char **benchmark_cmd; - char resctrl_val[64]; + size_t span; + bool once; FILE *fp; benchmark_cmd = info->si_ptr; @@ -324,18 +321,16 @@ void run_benchmark(int signum, siginfo_t *info, void *ucontext) if (strcmp(benchmark_cmd[0], "fill_buf") == 0) { /* Execute default fill_buf benchmark */ span = strtoul(benchmark_cmd[1], NULL, 10); - malloc_and_init_memory = atoi(benchmark_cmd[2]); - memflush = atoi(benchmark_cmd[3]); - operation = atoi(benchmark_cmd[4]); - sprintf(resctrl_val, "%s", benchmark_cmd[5]); - - if (strncmp(resctrl_val, CMT_STR, sizeof(CMT_STR))) - buffer_span = span * MB; + memflush = atoi(benchmark_cmd[2]); + operation = atoi(benchmark_cmd[3]); + if (!strcmp(benchmark_cmd[4], "true")) + once = true; + else if (!strcmp(benchmark_cmd[4], "false")) + once = false; else - buffer_span = span; + PARENT_EXIT("Invalid once parameter"); - if (run_fill_buf(buffer_span, malloc_and_init_memory, memflush, - operation, resctrl_val)) + if (run_fill_buf(span, memflush, operation, once)) fprintf(stderr, "Error in running fill buffer\n"); } else { /* Execute specified benchmark */ @@ -611,7 +606,8 @@ char *fgrep(FILE *inf, const char *str) * validate_resctrl_feature_request - Check if requested feature is valid. * @resctrl_val: Requested feature * - * Return: True if the feature is supported, else false + * Return: True if the feature is supported, else false. False is also + * returned if resctrl FS is not mounted. */ bool validate_resctrl_feature_request(const char *resctrl_val) { @@ -619,11 +615,13 @@ bool validate_resctrl_feature_request(const char *resctrl_val) bool found = false; char *res; FILE *inf; + int ret; if (!resctrl_val) return false; - if (remount_resctrlfs(false)) + ret = find_resctrl_mount(NULL); + if (ret) return false; if (!strncmp(resctrl_val, CAT_STR, sizeof(CAT_STR))) { diff --git a/tools/testing/selftests/rseq/Makefile b/tools/testing/selftests/rseq/Makefile index b357ba24af06..8f023b7cab60 100644 --- a/tools/testing/selftests/rseq/Makefile +++ b/tools/testing/selftests/rseq/Makefile @@ -31,7 +31,7 @@ $(OUTPUT)/%: %.c $(TEST_GEN_PROGS_EXTENDED) rseq.h rseq-*.h $(CC) $(CFLAGS) $< $(LDLIBS) -lrseq -o $@ $(OUTPUT)/basic_percpu_ops_mm_cid_test: basic_percpu_ops_test.c $(TEST_GEN_PROGS_EXTENDED) rseq.h rseq-*.h - $(CC) $(CFLAGS) -DBUILDOPT_RSEQ_PERCPU_MM_CID_ID $< $(LDLIBS) -lrseq -o $@ + $(CC) $(CFLAGS) -DBUILDOPT_RSEQ_PERCPU_MM_CID $< $(LDLIBS) -lrseq -o $@ $(OUTPUT)/param_test_benchmark: param_test.c $(TEST_GEN_PROGS_EXTENDED) \ rseq.h rseq-*.h diff --git a/tools/testing/selftests/rseq/compiler.h b/tools/testing/selftests/rseq/compiler.h index f47092bddeba..49d62fbd6dda 100644 --- a/tools/testing/selftests/rseq/compiler.h +++ b/tools/testing/selftests/rseq/compiler.h @@ -33,4 +33,30 @@ #define RSEQ_COMBINE_TOKENS(_tokena, _tokenb) \ RSEQ__COMBINE_TOKENS(_tokena, _tokenb) +#ifdef __cplusplus +#define rseq_unqual_scalar_typeof(x) \ + std::remove_cv::type>::type +#else +#define rseq_scalar_type_to_expr(type) \ + unsigned type: (unsigned type)0, \ + signed type: (signed type)0 + +/* + * Use C11 _Generic to express unqualified type from expression. This removes + * volatile qualifier from expression type. + */ +#define rseq_unqual_scalar_typeof(x) \ + __typeof__( \ + _Generic((x), \ + char: (char)0, \ + rseq_scalar_type_to_expr(char), \ + rseq_scalar_type_to_expr(short), \ + rseq_scalar_type_to_expr(int), \ + rseq_scalar_type_to_expr(long), \ + rseq_scalar_type_to_expr(long long), \ + default: (x) \ + ) \ + ) +#endif + #endif /* RSEQ_COMPILER_H_ */ diff --git a/tools/testing/selftests/rseq/rseq-arm.h b/tools/testing/selftests/rseq/rseq-arm.h index 8414fc3eac15..d887b3bbe257 100644 --- a/tools/testing/selftests/rseq/rseq-arm.h +++ b/tools/testing/selftests/rseq/rseq-arm.h @@ -66,7 +66,7 @@ #define rseq_smp_load_acquire(p) \ __extension__ ({ \ - __typeof(*p) ____p1 = RSEQ_READ_ONCE(*p); \ + rseq_unqual_scalar_typeof(*(p)) ____p1 = RSEQ_READ_ONCE(*(p)); \ rseq_smp_mb(); \ ____p1; \ }) @@ -76,7 +76,7 @@ __extension__ ({ \ #define rseq_smp_store_release(p, v) \ do { \ rseq_smp_mb(); \ - RSEQ_WRITE_ONCE(*p, v); \ + RSEQ_WRITE_ONCE(*(p), v); \ } while (0) #define __RSEQ_ASM_DEFINE_TABLE(label, version, flags, start_ip, \ diff --git a/tools/testing/selftests/rseq/rseq-arm64.h b/tools/testing/selftests/rseq/rseq-arm64.h index 85b90977e7e6..21e1626a7235 100644 --- a/tools/testing/selftests/rseq/rseq-arm64.h +++ b/tools/testing/selftests/rseq/rseq-arm64.h @@ -27,59 +27,61 @@ #define rseq_smp_load_acquire(p) \ __extension__ ({ \ - __typeof(*p) ____p1; \ - switch (sizeof(*p)) { \ + union { rseq_unqual_scalar_typeof(*(p)) __val; char __c[sizeof(*(p))]; } __u; \ + switch (sizeof(*(p))) { \ case 1: \ - asm volatile ("ldarb %w0, %1" \ - : "=r" (*(__u8 *)p) \ - : "Q" (*p) : "memory"); \ + __asm__ __volatile__ ("ldarb %w0, %1" \ + : "=r" (*(__u8 *)__u.__c) \ + : "Q" (*(p)) : "memory"); \ break; \ case 2: \ - asm volatile ("ldarh %w0, %1" \ - : "=r" (*(__u16 *)p) \ - : "Q" (*p) : "memory"); \ + __asm__ __volatile__ ("ldarh %w0, %1" \ + : "=r" (*(__u16 *)__u.__c) \ + : "Q" (*(p)) : "memory"); \ break; \ case 4: \ - asm volatile ("ldar %w0, %1" \ - : "=r" (*(__u32 *)p) \ - : "Q" (*p) : "memory"); \ + __asm__ __volatile__ ("ldar %w0, %1" \ + : "=r" (*(__u32 *)__u.__c) \ + : "Q" (*(p)) : "memory"); \ break; \ case 8: \ - asm volatile ("ldar %0, %1" \ - : "=r" (*(__u64 *)p) \ - : "Q" (*p) : "memory"); \ + __asm__ __volatile__ ("ldar %0, %1" \ + : "=r" (*(__u64 *)__u.__c) \ + : "Q" (*(p)) : "memory"); \ break; \ } \ - ____p1; \ + (rseq_unqual_scalar_typeof(*(p)))__u.__val; \ }) #define rseq_smp_acquire__after_ctrl_dep() rseq_smp_rmb() #define rseq_smp_store_release(p, v) \ do { \ - switch (sizeof(*p)) { \ + union { rseq_unqual_scalar_typeof(*(p)) __val; char __c[sizeof(*(p))]; } __u = \ + { .__val = (rseq_unqual_scalar_typeof(*(p))) (v) }; \ + switch (sizeof(*(p))) { \ case 1: \ - asm volatile ("stlrb %w1, %0" \ - : "=Q" (*p) \ - : "r" ((__u8)v) \ + __asm__ __volatile__ ("stlrb %w1, %0" \ + : "=Q" (*(p)) \ + : "r" (*(__u8 *)__u.__c) \ : "memory"); \ break; \ case 2: \ - asm volatile ("stlrh %w1, %0" \ - : "=Q" (*p) \ - : "r" ((__u16)v) \ + __asm__ __volatile__ ("stlrh %w1, %0" \ + : "=Q" (*(p)) \ + : "r" (*(__u16 *)__u.__c) \ : "memory"); \ break; \ case 4: \ - asm volatile ("stlr %w1, %0" \ - : "=Q" (*p) \ - : "r" ((__u32)v) \ + __asm__ __volatile__ ("stlr %w1, %0" \ + : "=Q" (*(p)) \ + : "r" (*(__u32 *)__u.__c) \ : "memory"); \ break; \ case 8: \ - asm volatile ("stlr %1, %0" \ - : "=Q" (*p) \ - : "r" ((__u64)v) \ + __asm__ __volatile__ ("stlr %1, %0" \ + : "=Q" (*(p)) \ + : "r" (*(__u64 *)__u.__c) \ : "memory"); \ break; \ } \ diff --git a/tools/testing/selftests/rseq/rseq-mips.h b/tools/testing/selftests/rseq/rseq-mips.h index 50b950cf9585..42ef8e946693 100644 --- a/tools/testing/selftests/rseq/rseq-mips.h +++ b/tools/testing/selftests/rseq/rseq-mips.h @@ -45,7 +45,7 @@ #define rseq_smp_load_acquire(p) \ __extension__ ({ \ - __typeof(*p) ____p1 = RSEQ_READ_ONCE(*p); \ + rseq_unqual_scalar_typeof(*(p)) ____p1 = RSEQ_READ_ONCE(*(p)); \ rseq_smp_mb(); \ ____p1; \ }) @@ -55,7 +55,7 @@ __extension__ ({ \ #define rseq_smp_store_release(p, v) \ do { \ rseq_smp_mb(); \ - RSEQ_WRITE_ONCE(*p, v); \ + RSEQ_WRITE_ONCE(*(p), v); \ } while (0) #if _MIPS_SZLONG == 64 diff --git a/tools/testing/selftests/rseq/rseq-ppc.h b/tools/testing/selftests/rseq/rseq-ppc.h index dc9190facee9..57b160597189 100644 --- a/tools/testing/selftests/rseq/rseq-ppc.h +++ b/tools/testing/selftests/rseq/rseq-ppc.h @@ -23,7 +23,7 @@ #define rseq_smp_load_acquire(p) \ __extension__ ({ \ - __typeof(*p) ____p1 = RSEQ_READ_ONCE(*p); \ + rseq_unqual_scalar_typeof(*(p)) ____p1 = RSEQ_READ_ONCE(*(p)); \ rseq_smp_lwsync(); \ ____p1; \ }) @@ -33,7 +33,7 @@ __extension__ ({ \ #define rseq_smp_store_release(p, v) \ do { \ rseq_smp_lwsync(); \ - RSEQ_WRITE_ONCE(*p, v); \ + RSEQ_WRITE_ONCE(*(p), v); \ } while (0) /* diff --git a/tools/testing/selftests/rseq/rseq-riscv.h b/tools/testing/selftests/rseq/rseq-riscv.h index 17932a79e066..37e598d0a365 100644 --- a/tools/testing/selftests/rseq/rseq-riscv.h +++ b/tools/testing/selftests/rseq/rseq-riscv.h @@ -36,8 +36,8 @@ #define rseq_smp_load_acquire(p) \ __extension__ ({ \ - __typeof(*(p)) ____p1 = RSEQ_READ_ONCE(*(p)); \ - RISCV_FENCE(r, rw) \ + rseq_unqual_scalar_typeof(*(p)) ____p1 = RSEQ_READ_ONCE(*(p)); \ + RISCV_FENCE(r, rw); \ ____p1; \ }) @@ -46,7 +46,7 @@ __extension__ ({ \ #define rseq_smp_store_release(p, v) \ do { \ RISCV_FENCE(rw, w); \ - RSEQ_WRITE_ONCE(*(p), v); \ + RSEQ_WRITE_ONCE(*(p), v); \ } while (0) #define __RSEQ_ASM_DEFINE_TABLE(label, version, flags, start_ip, \ diff --git a/tools/testing/selftests/rseq/rseq-s390.h b/tools/testing/selftests/rseq/rseq-s390.h index 46c92598acc7..33baaa9f9997 100644 --- a/tools/testing/selftests/rseq/rseq-s390.h +++ b/tools/testing/selftests/rseq/rseq-s390.h @@ -15,7 +15,7 @@ #define rseq_smp_load_acquire(p) \ __extension__ ({ \ - __typeof(*p) ____p1 = RSEQ_READ_ONCE(*p); \ + rseq_unqual_scalar_typeof(*(p)) ____p1 = RSEQ_READ_ONCE(*(p)); \ rseq_barrier(); \ ____p1; \ }) @@ -25,7 +25,7 @@ __extension__ ({ \ #define rseq_smp_store_release(p, v) \ do { \ rseq_barrier(); \ - RSEQ_WRITE_ONCE(*p, v); \ + RSEQ_WRITE_ONCE(*(p), v); \ } while (0) #ifdef __s390x__ diff --git a/tools/testing/selftests/rseq/rseq-x86.h b/tools/testing/selftests/rseq/rseq-x86.h index fb65ef54b0fb..a2aa428ba151 100644 --- a/tools/testing/selftests/rseq/rseq-x86.h +++ b/tools/testing/selftests/rseq/rseq-x86.h @@ -42,7 +42,7 @@ #define rseq_smp_load_acquire(p) \ __extension__ ({ \ - __typeof(*p) ____p1 = RSEQ_READ_ONCE(*p); \ + rseq_unqual_scalar_typeof(*(p)) ____p1 = RSEQ_READ_ONCE(*(p)); \ rseq_barrier(); \ ____p1; \ }) @@ -52,7 +52,7 @@ __extension__ ({ \ #define rseq_smp_store_release(p, v) \ do { \ rseq_barrier(); \ - RSEQ_WRITE_ONCE(*p, v); \ + RSEQ_WRITE_ONCE(*(p), v); \ } while (0) #define __RSEQ_ASM_DEFINE_TABLE(label, version, flags, \ diff --git a/tools/testing/selftests/user_events/Makefile b/tools/testing/selftests/user_events/Makefile index 9e95bd41b0b4..10fcd0066203 100644 --- a/tools/testing/selftests/user_events/Makefile +++ b/tools/testing/selftests/user_events/Makefile @@ -2,14 +2,6 @@ CFLAGS += -Wl,-no-as-needed -Wall $(KHDR_INCLUDES) LDLIBS += -lrt -lpthread -lm -# Note: -# This test depends on exported in uapi -# The following commit removed user_events.h out of uapi: -# commit 5cfff569cab8bf544bab62c911c5d6efd5af5e05 -# tracing: Move user_events.h temporarily out of include/uapi -# This test will not compile until user_events.h is added -# back to uapi. - TEST_GEN_PROGS = ftrace_test dyn_test perf_test abi_test TEST_FILES := settings