From: Xiaochen Shen Date: Tue, 19 Sep 2017 04:57:37 +0000 (+0800) Subject: perf tests: Remove Intel CQM perf test X-Git-Tag: v4.15-rc1~160^2~38^2~5 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=5c9295bfe6f5f59f3f2eee78f58b0523d117897e;p=linux.git perf tests: Remove Intel CQM perf test Intel CQM perf test is obsolete for perf PMU code has been removed in commit c39a0e2c8850 ("x86/perf/cqm: Wipe out perf based cqm"). Signed-off-by: Xiaochen Shen Cc: Alexander Shishkin Cc: Fenghua Yu Cc: Matt Fleming Cc: Pei P Jia Cc: Peter Zijlstra Cc: Tony Luck Cc: Vikas Shivappa Link: http://lkml.kernel.org/r/1505797057-16300-1-git-send-email-xiaochen.shen@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- diff --git a/tools/perf/arch/x86/include/arch-tests.h b/tools/perf/arch/x86/include/arch-tests.h index 4e0b806a7a0f..01ad4208bcdf 100644 --- a/tools/perf/arch/x86/include/arch-tests.h +++ b/tools/perf/arch/x86/include/arch-tests.h @@ -8,7 +8,6 @@ struct test; int test__rdpmc(struct test *test __maybe_unused, int subtest); int test__perf_time_to_tsc(struct test *test __maybe_unused, int subtest); int test__insn_x86(struct test *test __maybe_unused, int subtest); -int test__intel_cqm_count_nmi_context(struct test *test __maybe_unused, int subtest); #ifdef HAVE_DWARF_UNWIND_SUPPORT struct thread; diff --git a/tools/perf/arch/x86/tests/Build b/tools/perf/arch/x86/tests/Build index cbb7e978166b..8e2c5a38c3b9 100644 --- a/tools/perf/arch/x86/tests/Build +++ b/tools/perf/arch/x86/tests/Build @@ -5,4 +5,3 @@ libperf-y += arch-tests.o libperf-y += rdpmc.o libperf-y += perf-time-to-tsc.o libperf-$(CONFIG_AUXTRACE) += insn-x86.o -libperf-y += intel-cqm.o diff --git a/tools/perf/arch/x86/tests/arch-tests.c b/tools/perf/arch/x86/tests/arch-tests.c index 99d66191e56c..271c0a0f95d7 100644 --- a/tools/perf/arch/x86/tests/arch-tests.c +++ b/tools/perf/arch/x86/tests/arch-tests.c @@ -23,10 +23,6 @@ struct test arch_tests[] = { .func = test__insn_x86, }, #endif - { - .desc = "Intel cqm nmi context read", - .func = test__intel_cqm_count_nmi_context, - }, { .func = NULL, }, diff --git a/tools/perf/arch/x86/tests/intel-cqm.c b/tools/perf/arch/x86/tests/intel-cqm.c deleted file mode 100644 index 57f86b6e7d6f..000000000000 --- a/tools/perf/arch/x86/tests/intel-cqm.c +++ /dev/null @@ -1,127 +0,0 @@ -#include "tests/tests.h" -#include "perf.h" -#include "cloexec.h" -#include "debug.h" -#include "evlist.h" -#include "evsel.h" -#include "arch-tests.h" - -#include -#include -#include -#include -#include - -static pid_t spawn(void) -{ - pid_t pid; - - pid = fork(); - if (pid) - return pid; - - while(1) - sleep(5); - return 0; -} - -/* - * Create an event group that contains both a sampled hardware - * (cpu-cycles) and software (intel_cqm/llc_occupancy/) event. We then - * wait for the hardware perf counter to overflow and generate a PMI, - * which triggers an event read for both of the events in the group. - * - * Since reading Intel CQM event counters requires sending SMP IPIs, the - * CQM pmu needs to handle the above situation gracefully, and return - * the last read counter value to avoid triggering a WARN_ON_ONCE() in - * smp_call_function_many() caused by sending IPIs from NMI context. - */ -int test__intel_cqm_count_nmi_context(struct test *test __maybe_unused, int subtest __maybe_unused) -{ - struct perf_evlist *evlist = NULL; - struct perf_evsel *evsel = NULL; - struct perf_event_attr pe; - int i, fd[2], flag, ret; - size_t mmap_len; - void *event; - pid_t pid; - int err = TEST_FAIL; - - flag = perf_event_open_cloexec_flag(); - - evlist = perf_evlist__new(); - if (!evlist) { - pr_debug("perf_evlist__new failed\n"); - return TEST_FAIL; - } - - ret = parse_events(evlist, "intel_cqm/llc_occupancy/", NULL); - if (ret) { - pr_debug("parse_events failed, is \"intel_cqm/llc_occupancy/\" available?\n"); - err = TEST_SKIP; - goto out; - } - - evsel = perf_evlist__first(evlist); - if (!evsel) { - pr_debug("perf_evlist__first failed\n"); - goto out; - } - - memset(&pe, 0, sizeof(pe)); - pe.size = sizeof(pe); - - pe.type = PERF_TYPE_HARDWARE; - pe.config = PERF_COUNT_HW_CPU_CYCLES; - pe.read_format = PERF_FORMAT_GROUP; - - pe.sample_period = 128; - pe.sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_READ; - - pid = spawn(); - - fd[0] = sys_perf_event_open(&pe, pid, -1, -1, flag); - if (fd[0] < 0) { - pr_debug("failed to open event\n"); - goto out; - } - - memset(&pe, 0, sizeof(pe)); - pe.size = sizeof(pe); - - pe.type = evsel->attr.type; - pe.config = evsel->attr.config; - - fd[1] = sys_perf_event_open(&pe, pid, -1, fd[0], flag); - if (fd[1] < 0) { - pr_debug("failed to open event\n"); - goto out; - } - - /* - * Pick a power-of-two number of pages + 1 for the meta-data - * page (struct perf_event_mmap_page). See tools/perf/design.txt. - */ - mmap_len = page_size * 65; - - event = mmap(NULL, mmap_len, PROT_READ, MAP_SHARED, fd[0], 0); - if (event == (void *)(-1)) { - pr_debug("failed to mmap %d\n", errno); - goto out; - } - - sleep(1); - - err = TEST_OK; - - munmap(event, mmap_len); - - for (i = 0; i < 2; i++) - close(fd[i]); - - kill(pid, SIGKILL); - wait(NULL); -out: - perf_evlist__delete(evlist); - return err; -}