Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161195AbbBDOxi (ORCPT ); Wed, 4 Feb 2015 09:53:38 -0500 Received: from mail-bn1on0117.outbound.protection.outlook.com ([157.56.110.117]:44125 "EHLO na01-bn1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S966357AbbBDOxK (ORCPT ); Wed, 4 Feb 2015 09:53:10 -0500 From: Emil Medve To: , , CC: Geoff Thorpe Subject: [RFC 05/10] fsl_bman: Add self-tester Date: Wed, 4 Feb 2015 08:48:37 -0600 Message-ID: <1423061322-16059-6-git-send-email-Emilian.Medve@Freescale.com> X-Mailer: git-send-email 2.2.2 In-Reply-To: <1423061322-16059-1-git-send-email-Emilian.Medve@Freescale.com> References: <1423061322-16059-1-git-send-email-Emilian.Medve@Freescale.com> X-EOPAttributedMessage: 0 Authentication-Results: spf=fail (sender IP is 192.88.168.50) smtp.mailfrom=Emilian.Medve@Freescale.com; freescale.mail.onmicrosoft.com; dkim=none (message not signed) header.d=none; X-Forefront-Antispam-Report: CIP:192.88.168.50;CTRY:US;IPV:NLI;EFV:NLI;SFV:NSPM;SFS:(10019020)(6009001)(339900001)(106466001)(77096005)(36756003)(85426001)(50226001)(105606002)(92566002)(62966003)(77156002)(229853001)(2950100001)(50986999)(6806004)(76176999)(104016003)(86362001)(575784001)(19580405001)(19580395003)(47776003)(87936001)(2201001)(46102003)(48376002)(50466002)(2101003);DIR:OUT;SFP:1102;SCL:1;SRVR:BY1PR0301MB1192;H:tx30smr01.am.freescale.net;FPR:;SPF:Fail;MLV:sfv;LANG:en; MIME-Version: 1.0 Content-Type: text/plain X-Microsoft-Antispam: UriScan:; X-Microsoft-Antispam: BCL:0;PCL:0;RULEID:;SRVR:BY1PR0301MB1192; X-Exchange-Antispam-Report-Test: UriScan:; X-Exchange-Antispam-Report-CFA-Test: BCL:0;PCL:0;RULEID:(601004);SRVR:BY1PR0301MB1192; X-Forefront-PRVS: 04772EA191 X-Exchange-Antispam-Report-CFA-Test: BCL:0;PCL:0;RULEID:;SRVR:BY1PR0301MB1192; X-OriginatorOrg: freescale.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Feb 2015 14:53:05.9158 (UTC) X-MS-Exchange-CrossTenant-Id: 710a03f5-10f6-4d38-9ff4-a80b81da590d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=710a03f5-10f6-4d38-9ff4-a80b81da590d;Ip=[192.88.168.50] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY1PR0301MB1192 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 20641 Lines: 588 From: Geoff Thorpe Change-Id: If1b44bb013addc1e855c73a4e6ff74bc8b6e4829 Signed-off-by: Geoff Thorpe --- drivers/staging/fsl_qbman/Kconfig | 26 ++++ drivers/staging/fsl_qbman/Makefile | 16 ++- drivers/staging/fsl_qbman/bman_test.c | 56 ++++++++ drivers/staging/fsl_qbman/bman_test.h | 44 ++++++ drivers/staging/fsl_qbman/bman_test_high.c | 181 +++++++++++++++++++++++++ drivers/staging/fsl_qbman/bman_test_thresh.c | 196 +++++++++++++++++++++++++++ 6 files changed, 513 insertions(+), 6 deletions(-) create mode 100644 drivers/staging/fsl_qbman/bman_test.c create mode 100644 drivers/staging/fsl_qbman/bman_test.h create mode 100644 drivers/staging/fsl_qbman/bman_test_high.c create mode 100644 drivers/staging/fsl_qbman/bman_test_thresh.c diff --git a/drivers/staging/fsl_qbman/Kconfig b/drivers/staging/fsl_qbman/Kconfig index db90fe5..1875dbf 100644 --- a/drivers/staging/fsl_qbman/Kconfig +++ b/drivers/staging/fsl_qbman/Kconfig @@ -48,6 +48,32 @@ config FSL_BMAN_CONFIG linux image is running as a guest OS under the hypervisor, only one guest OS ("the control plane") needs this option. +config FSL_BMAN_TEST + tristate "BMan self-tests" + default n + ---help--- + This option compiles self-test code for BMan. + +config FSL_BMAN_TEST_HIGH + bool "BMan high-level self-test" + depends on FSL_BMAN_TEST + default y + ---help--- + This requires the presence of cpu-affine portals, and performs + high-level API testing with them (whichever portal(s) are affine to + the cpu(s) the test executes on). + +config FSL_BMAN_TEST_THRESH + bool "BMan threshold test" + depends on FSL_BMAN_TEST + default y + ---help--- + Multi-threaded (SMP) test of BMan pool depletion. A pool is seeded + before multiple threads (one per cpu) create pool objects to track + depletion state changes. The pool is then drained to empty by a + "drainer" thread, and the other threads that they observe exactly + the depletion state changes that are expected. + endif # FSL_BMAN config FSL_QMAN diff --git a/drivers/staging/fsl_qbman/Makefile b/drivers/staging/fsl_qbman/Makefile index 399d87e..0fcdd84 100644 --- a/drivers/staging/fsl_qbman/Makefile +++ b/drivers/staging/fsl_qbman/Makefile @@ -1,11 +1,15 @@ # Common -obj-$(CONFIG_FSL_DPA) += dpa_alloc.o -obj-$(CONFIG_HAS_FSL_QBMAN) += qbman_driver.o +obj-$(CONFIG_FSL_DPA) += dpa_alloc.o +obj-$(CONFIG_HAS_FSL_QBMAN) += qbman_driver.o # Bman -obj-$(CONFIG_FSL_BMAN) += bman_high.o -obj-$(CONFIG_FSL_BMAN_CONFIG) += bman_config.o bman_driver.o +obj-$(CONFIG_FSL_BMAN) += bman_high.o +obj-$(CONFIG_FSL_BMAN_CONFIG) += bman_config.o bman_driver.o +obj-$(CONFIG_FSL_BMAN_TEST) += bman_tester.o +bman_tester-y = bman_test.o +bman_tester-$(CONFIG_FSL_BMAN_TEST_HIGH) += bman_test_high.o +bman_tester-$(CONFIG_FSL_BMAN_TEST_THRESH) += bman_test_thresh.o # Qman -obj-$(CONFIG_FSL_QMAN) += qman_high.o qman_utility.o -obj-$(CONFIG_FSL_QMAN_CONFIG) += qman_config.o qman_driver.o +obj-$(CONFIG_FSL_QMAN) += qman_high.o qman_utility.o +obj-$(CONFIG_FSL_QMAN_CONFIG) += qman_config.o qman_driver.o diff --git a/drivers/staging/fsl_qbman/bman_test.c b/drivers/staging/fsl_qbman/bman_test.c new file mode 100644 index 0000000..1a261ee --- /dev/null +++ b/drivers/staging/fsl_qbman/bman_test.c @@ -0,0 +1,56 @@ +/* Copyright 2008-2011 Freescale Semiconductor, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "bman_test.h" + +MODULE_AUTHOR("Geoff Thorpe"); +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_DESCRIPTION("Bman testing"); + +static int test_init(void) +{ +#ifdef CONFIG_FSL_BMAN_TEST_HIGH + int loop = 1; + while (loop--) + bman_test_high(); +#endif +#ifdef CONFIG_FSL_BMAN_TEST_THRESH + bman_test_thresh(); +#endif + return 0; +} + +static void test_exit(void) +{ +} + +module_init(test_init); +module_exit(test_exit); diff --git a/drivers/staging/fsl_qbman/bman_test.h b/drivers/staging/fsl_qbman/bman_test.h new file mode 100644 index 0000000..25e43f0 --- /dev/null +++ b/drivers/staging/fsl_qbman/bman_test.h @@ -0,0 +1,44 @@ +/* Copyright 2008-2011 Freescale Semiconductor, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +void bman_test_high(void); +void bman_test_thresh(void); diff --git a/drivers/staging/fsl_qbman/bman_test_high.c b/drivers/staging/fsl_qbman/bman_test_high.c new file mode 100644 index 0000000..abfe157 --- /dev/null +++ b/drivers/staging/fsl_qbman/bman_test_high.c @@ -0,0 +1,181 @@ +/* Copyright 2008-2011 Freescale Semiconductor, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "bman_test.h" +#include "bman_private.h" + +/*************/ +/* constants */ +/*************/ + +#define PORTAL_OPAQUE ((void *)0xf00dbeef) +#define POOL_OPAQUE ((void *)0xdeadabba) +#define NUM_BUFS 93 +#define LOOPS 3 +#define BMAN_TOKEN_MASK 0x00FFFFFFFFFFLLU + +/***************/ +/* global vars */ +/***************/ + +static struct bman_pool *pool; +static int depleted; +static struct bm_buffer bufs_in[NUM_BUFS] ____cacheline_aligned; +static struct bm_buffer bufs_out[NUM_BUFS] ____cacheline_aligned; +static int bufs_received; + +/* Predeclare the callback so we can instantiate pool parameters */ +static void depletion_cb(struct bman_portal *, struct bman_pool *, void *, int); + +/**********************/ +/* internal functions */ +/**********************/ + +static void bufs_init(void) +{ + int i; + for (i = 0; i < NUM_BUFS; i++) + bm_buffer_set64(&bufs_in[i], 0xfedc01234567LLU * i); + bufs_received = 0; +} + +static inline int bufs_cmp(const struct bm_buffer *a, const struct bm_buffer *b) +{ + if ((bman_ip_rev == BMAN_REV20) || (bman_ip_rev == BMAN_REV21)) { + + /* On SoCs with Bman revison 2.0, Bman only respects the 40 + * LS-bits of buffer addresses, masking off the upper 8-bits on + * release commands. The API provides for 48-bit addresses + * because some SoCs support all 48-bits. When generating + * garbage addresses for testing, we either need to zero the + * upper 8-bits when releasing to Bman (otherwise we'll be + * disappointed when the buffers we acquire back from Bman + * don't match), or we need to mask the upper 8-bits off when + * comparing. We do the latter. + */ + if ((bm_buffer_get64(a) & BMAN_TOKEN_MASK) + < (bm_buffer_get64(b) & BMAN_TOKEN_MASK)) + return -1; + if ((bm_buffer_get64(a) & BMAN_TOKEN_MASK) + > (bm_buffer_get64(b) & BMAN_TOKEN_MASK)) + return 1; + } else { + if (bm_buffer_get64(a) < bm_buffer_get64(b)) + return -1; + if (bm_buffer_get64(a) > bm_buffer_get64(b)) + return 1; + } + + return 0; +} + +static void bufs_confirm(void) +{ + int i, j; + for (i = 0; i < NUM_BUFS; i++) { + int matches = 0; + for (j = 0; j < NUM_BUFS; j++) + if (!bufs_cmp(&bufs_in[i], &bufs_out[j])) + matches++; + BUG_ON(matches != 1); + } +} + +/********/ +/* test */ +/********/ + +static void depletion_cb(struct bman_portal *__portal, struct bman_pool *__pool, + void *pool_ctx, int __depleted) +{ + BUG_ON(__pool != pool); + BUG_ON(pool_ctx != POOL_OPAQUE); + depleted = __depleted; +} + +void bman_test_high(void) +{ + struct bman_pool_params pparams = { + .flags = BMAN_POOL_FLAG_DEPLETION | BMAN_POOL_FLAG_DYNAMIC_BPID, + .cb = depletion_cb, + .cb_ctx = POOL_OPAQUE, + }; + int i, loops = LOOPS; + + bufs_init(); + + pr_info("BMAN: --- starting high-level test ---\n"); + + pool = bman_new_pool(&pparams); + BUG_ON(!pool); + + /*******************/ + /* Release buffers */ + /*******************/ +do_loop: + i = 0; + while (i < NUM_BUFS) { + u32 flags = BMAN_RELEASE_FLAG_WAIT; + int num = 8; + if ((i + num) > NUM_BUFS) + num = NUM_BUFS - i; + if ((i + num) == NUM_BUFS) + flags |= BMAN_RELEASE_FLAG_WAIT_SYNC; + if (bman_release(pool, bufs_in + i, num, flags)) + panic("bman_release() failed\n"); + i += num; + } + + /*******************/ + /* Acquire buffers */ + /*******************/ + while (i > 0) { + int tmp, num = 8; + if (num > i) + num = i; + tmp = bman_acquire(pool, bufs_out + i - num, num, 0); + BUG_ON(tmp != num); + i -= num; + } + i = bman_acquire(pool, NULL, 1, 0); + BUG_ON(i > 0); + + bufs_confirm(); + + if (--loops) + goto do_loop; + + /************/ + /* Clean up */ + /************/ + bman_free_pool(pool); + pr_info("BMAN: --- finished high-level test ---\n"); +} diff --git a/drivers/staging/fsl_qbman/bman_test_thresh.c b/drivers/staging/fsl_qbman/bman_test_thresh.c new file mode 100644 index 0000000..c03db24 --- /dev/null +++ b/drivers/staging/fsl_qbman/bman_test_thresh.c @@ -0,0 +1,196 @@ +/* Copyright 2010-2011 Freescale Semiconductor, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "bman_test.h" + +/* Test constants */ +#define TEST_NUMBUFS 129728 +#define TEST_EXIT 129536 +#define TEST_ENTRY 129024 + +struct affine_test_data { + struct task_struct *t; + int cpu; + int expect_affinity; + int drain; + int num_enter; + int num_exit; + struct list_head node; + struct completion wakethread; + struct completion wakeparent; +}; + +static void cb_depletion(struct bman_portal *portal, + struct bman_pool *pool, + void *opaque, + int depleted) +{ + struct affine_test_data *data = opaque; + int c = smp_processor_id(); + pr_info("cb_depletion: bpid=%d, depleted=%d, cpu=%d, original=%d\n", + bman_get_params(pool)->bpid, !!depleted, c, data->cpu); + /* We should be executing on the CPU of the thread that owns the pool if + * and that CPU has an affine portal (ie. it isn't slaved). */ + BUG_ON((c != data->cpu) && data->expect_affinity); + BUG_ON((c == data->cpu) && !data->expect_affinity); + if (depleted) + data->num_enter++; + else + data->num_exit++; +} + +/* Params used to set up a pool, this also dynamically allocates a BPID */ +static const struct bman_pool_params params_nocb = { + .flags = BMAN_POOL_FLAG_DYNAMIC_BPID | BMAN_POOL_FLAG_THRESH, + .thresholds = { TEST_ENTRY, TEST_EXIT, 0, 0 } +}; + +/* Params used to set up each cpu's pool with callbacks enabled */ +static struct bman_pool_params params_cb = { + .bpid = 0, /* will be replaced to match pool_nocb */ + .flags = BMAN_POOL_FLAG_DEPLETION, + .cb = cb_depletion +}; + +static struct bman_pool *pool_nocb; +static LIST_HEAD(threads); + +static int affine_test(void *__data) +{ + struct bman_pool *pool; + struct affine_test_data *data = __data; + struct bman_pool_params my_params = params_cb; + + pr_info("thread %d: starting\n", data->cpu); + /* create the pool */ + my_params.cb_ctx = data; + pool = bman_new_pool(&my_params); + BUG_ON(!pool); + complete(&data->wakeparent); + wait_for_completion(&data->wakethread); + init_completion(&data->wakethread); + + /* if we're the drainer, we get signalled for that */ + if (data->drain) { + struct bm_buffer buf; + int ret; + pr_info("thread %d: draining...\n", data->cpu); + do { + ret = bman_acquire(pool, &buf, 1, 0); + } while (ret > 0); + pr_info("thread %d: draining done.\n", data->cpu); + complete(&data->wakeparent); + wait_for_completion(&data->wakethread); + init_completion(&data->wakethread); + } + + /* cleanup */ + bman_free_pool(pool); + while (!kthread_should_stop()) + cpu_relax(); + pr_info("thread %d: exiting\n", data->cpu); + return 0; +} + +static struct affine_test_data *start_affine_test(int cpu, int drain) +{ + struct affine_test_data *data = kmalloc(sizeof(*data), GFP_KERNEL); + + if (!data) + return NULL; + data->cpu = cpu; + data->expect_affinity = cpumask_test_cpu(cpu, bman_affine_cpus()); + data->drain = drain; + data->num_enter = 0; + data->num_exit = 0; + init_completion(&data->wakethread); + init_completion(&data->wakeparent); + list_add_tail(&data->node, &threads); + data->t = kthread_create(affine_test, data, "threshtest%d", cpu); + BUG_ON(IS_ERR(data->t)); + kthread_bind(data->t, cpu); + wake_up_process(data->t); + return data; +} + +void bman_test_thresh(void) +{ + int loop = TEST_NUMBUFS; + int ret, num_cpus = 0; + struct affine_test_data *data, *drainer = NULL; + + pr_info("bman_test_thresh: start\n"); + + /* allocate a BPID and seed it */ + pool_nocb = bman_new_pool(¶ms_nocb); + BUG_ON(!pool_nocb); + while (loop--) { + struct bm_buffer buf; + bm_buffer_set64(&buf, 0x0badbeef + loop); + ret = bman_release(pool_nocb, &buf, 1, + BMAN_RELEASE_FLAG_WAIT); + BUG_ON(ret); + } + while (!bman_rcr_is_empty()) + cpu_relax(); + pr_info("bman_test_thresh: buffers are in\n"); + + /* create threads and wait for them to create pools */ + params_cb.bpid = bman_get_params(pool_nocb)->bpid; + for_each_cpu(loop, cpu_online_mask) { + data = start_affine_test(loop, drainer ? 0 : 1); + BUG_ON(!data); + if (!drainer) + drainer = data; + num_cpus++; + wait_for_completion(&data->wakeparent); + } + + /* signal the drainer to start draining */ + complete(&drainer->wakethread); + wait_for_completion(&drainer->wakeparent); + init_completion(&drainer->wakeparent); + + /* tear down */ + list_for_each_entry_safe(data, drainer, &threads, node) { + complete(&data->wakethread); + ret = kthread_stop(data->t); + BUG_ON(ret); + list_del(&data->node); + /* check that we get the expected callbacks (and no others) */ + BUG_ON(data->num_enter != 1); + BUG_ON(data->num_exit != 0); + kfree(data); + } + bman_free_pool(pool_nocb); + + pr_info("bman_test_thresh: done\n"); +} -- 2.2.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/