From patchwork Thu Jul 26 20:30:45 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 10546437 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 076A2180E for ; Thu, 26 Jul 2018 20:30:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 113432B7DE for ; Thu, 26 Jul 2018 20:30:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 054842B808; Thu, 26 Jul 2018 20:30:56 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 3F3082B7DE for ; Thu, 26 Jul 2018 20:30:55 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8B8206E83F; Thu, 26 Jul 2018 20:30:54 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from fireflyinternet.com (mail.fireflyinternet.com [109.228.58.192]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1C38B6E841; Thu, 26 Jul 2018 20:30:52 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from haswell.alporthouse.com (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP id 12474876-1500050 for multiple; Thu, 26 Jul 2018 21:30:45 +0100 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Thu, 26 Jul 2018 21:30:45 +0100 Message-Id: <20180726203045.17521-1-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.18.0 Subject: [Intel-gfx] [PATCH i-g-t] igt/gem_mocs_settings: Use i915_pmu to measure rc6 residency X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: igt-dev@lists.freedesktop.org MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP Use the perf pmu interface for lowlevel rc6 measurement, hopefully for greater stability. Signed-off-by: Chris Wilson --- tests/Makefile.am | 1 + tests/gem_mocs_settings.c | 45 +++++++++++++++++++++++++++------------ tests/meson.build | 8 ++++++- 3 files changed, 39 insertions(+), 15 deletions(-) diff --git a/tests/Makefile.am b/tests/Makefile.am index 8712eb169..ee5a7c5e8 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -115,6 +115,7 @@ gem_fence_upload_CFLAGS = $(AM_CFLAGS) $(THREAD_CFLAGS) gem_fence_upload_LDADD = $(LDADD) -lpthread gem_flink_race_CFLAGS = $(AM_CFLAGS) $(THREAD_CFLAGS) gem_flink_race_LDADD = $(LDADD) -lpthread +gem_mocs_settings_LDADD = $(LDADD) $(top_builddir)/lib/libigt_perf.la gem_mmap_gtt_CFLAGS = $(AM_CFLAGS) $(THREAD_CFLAGS) gem_mmap_gtt_LDADD = $(LDADD) -lpthread gem_mmap_wc_CFLAGS = $(AM_CFLAGS) $(THREAD_CFLAGS) diff --git a/tests/gem_mocs_settings.c b/tests/gem_mocs_settings.c index 9705fbfde..eccbf7852 100644 --- a/tests/gem_mocs_settings.c +++ b/tests/gem_mocs_settings.c @@ -29,6 +29,7 @@ #include "igt.h" #include "igt_gt.h" +#include "igt_perf.h" #include "igt_sysfs.h" #define MAX_NUMBER_MOCS_REGISTERS (64) @@ -329,23 +330,39 @@ static void check_l3cc_registers(int fd, } -static uint32_t rc6_residency(int dir) +static bool rc6_wait(int i915) { - return igt_sysfs_get_u32(dir, "power/rc6_residency_ms"); -} - -static void rc6_wait(int fd) -{ - int sysfs; - uint32_t residency; + uint64_t start[2], now[2], prev; + bool rc6 = false; + int fd; + + fd = perf_i915_open(I915_PMU_RC6_RESIDENCY); + + /* First wait for roughly an RC6 Evaluation Interval */ + gem_quiescent_gpu(i915); + usleep(320e3); + + /* Then poll for RC6 to start ticking */ + igt_assert_eq(read(fd, start, sizeof(start)), sizeof(start)); + prev = start[1]; + do { + usleep(5e3); + igt_assert_eq(read(fd, now, sizeof(now)), sizeof(now)); + if (now[1] - prev > 1e6) { + rc6 = true; + break; + } + prev = now[1]; + } while (now[0] - start[0] > 1e9); - sysfs = igt_sysfs_open(fd, NULL); - igt_assert_lte(0, sysfs); + close(fd); - residency = rc6_residency(sysfs); - igt_require(igt_wait(rc6_residency(sysfs) != residency, 10000, 2)); + igt_debug("rc6 residency %.2fms (delta %.1fms over 5ms), elapsed %.2fms\n", + 1e-6 * (now[1] - start[1]), + 1e-6 * (now[1] - prev), + 1e-6 * (now[0] - start[0])); - close(sysfs); + return rc6; } static void check_mocs_values(int fd, unsigned engine, uint32_t ctx_id, bool dirty) @@ -397,7 +414,7 @@ static void run_test(int fd, unsigned engine, unsigned flags, unsigned mode) SUSPEND_TEST_NONE); break; case HIBERNATE: igt_system_suspend_autoresume(SUSPEND_STATE_DISK, SUSPEND_TEST_NONE); break; - case RC6: rc6_wait(fd); break; + case RC6: igt_require(rc6_wait(fd)); break; } check_mocs_values(fd, engine, ctx_id, false); diff --git a/tests/meson.build b/tests/meson.build index 32c2156c6..8f9ead8c3 100644 --- a/tests/meson.build +++ b/tests/meson.build @@ -82,7 +82,6 @@ test_progs = [ 'gem_mmap_gtt', 'gem_mmap_offset_exhaustion', 'gem_mmap_wc', - 'gem_mocs_settings', 'gem_partial_pwrite_pread', 'gem_persistent_relocs', 'gem_pipe_control_store_loop', @@ -279,6 +278,13 @@ test_executables += executable('gem_eio', 'gem_eio.c', install : true) test_progs += 'gem_eio' +test_executables += executable('gem_mocs_settings', 'gem_mocs_settings.c', + dependencies : test_deps + [ lib_igt_perf ], + install_dir : libexecdir, + install_rpath : rpathdir, + install : true) +test_progs += 'gem_mocs_settings' + test_executables += executable('perf_pmu', 'perf_pmu.c', dependencies : test_deps + [ lib_igt_perf ], install_dir : libexecdir,