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Message-ID: <tip-5c9295bfe6f5f59f3f2eee78f58b0523d117897e@git.kernel.org>
Date: Fri, 22 Sep 2017 09:44:35 -0700
From: tip-bot for Xiaochen Shen <tipbot@...or.com>
To: linux-tip-commits@...r.kernel.org
Cc: alexander.shishkin@...ux.intel.com, xiaochen.shen@...el.com,
linux-kernel@...r.kernel.org, hpa@...or.com,
vikas.shivappa@...ux.intel.com, acme@...hat.com,
pei.p.jia@...el.com, matt@...eblueprint.co.uk,
fenghua.yu@...el.com, tglx@...utronix.de, mingo@...nel.org,
tony.luck@...el.com, peterz@...radead.org
Subject: [tip:perf/core] perf tests: Remove Intel CQM perf test
Commit-ID: 5c9295bfe6f5f59f3f2eee78f58b0523d117897e
Gitweb: http://git.kernel.org/tip/5c9295bfe6f5f59f3f2eee78f58b0523d117897e
Author: Xiaochen Shen <xiaochen.shen@...el.com>
AuthorDate: Tue, 19 Sep 2017 12:57:37 +0800
Committer: Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Thu, 21 Sep 2017 13:12:58 -0300
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Intel CQM perf test is obsolete for perf PMU code has been removed in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 <xiaochen.shen@...el.com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Fenghua Yu <fenghua.yu@...el.com>
Cc: Matt Fleming <matt@...eblueprint.co.uk>
Cc: Pei P Jia <pei.p.jia@...el.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Tony Luck <tony.luck@...el.com>
Cc: Vikas Shivappa <vikas.shivappa@...ux.intel.com>
Link: http://lkml.kernel.org/r/1505797057-16300-1-git-send-email-xiaochen.shen@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/perf/arch/x86/include/arch-tests.h | 1 -
tools/perf/arch/x86/tests/Build | 1 -
tools/perf/arch/x86/tests/arch-tests.c | 4 -
tools/perf/arch/x86/tests/intel-cqm.c | 127 -------------------------------
4 files changed, 133 deletions(-)
diff --git a/tools/perf/arch/x86/include/arch-tests.h b/tools/perf/arch/x86/include/arch-tests.h
index 4e0b806..01ad420 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 cbb7e97..8e2c5a3 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 99d6619..271c0a0 100644
--- a/tools/perf/arch/x86/tests/arch-tests.c
+++ b/tools/perf/arch/x86/tests/arch-tests.c
@@ -24,10 +24,6 @@ struct test arch_tests[] = {
},
#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 57f86b6..0000000
--- 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 <signal.h>
-#include <sys/mman.h>
-#include <sys/wait.h>
-#include <errno.h>
-#include <string.h>
-
-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;
-}
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