/* * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include #include #include #include #include #include #define TEST_SE0_NAK_PID 0x0101 #define TEST_J_PID 0x0102 #define TEST_K_PID 0x0103 #define TEST_PACKET_PID 0x0104 #define TEST_HS_HOST_PORT_SUSPEND_RESUME 0x0106 #define TEST_SINGLE_STEP_GET_DEV_DESC 0x0107 #define TEST_SINGLE_STEP_SET_FEATURE 0x0108 static int ehset_probe(struct usb_interface *intf, const struct usb_device_id *id) { int ret = -EINVAL; struct usb_device *dev = interface_to_usbdev(intf); struct usb_device *hub_udev = dev->parent; struct usb_device_descriptor *buf; u8 portnum = dev->portnum; u16 test_pid = le16_to_cpu(dev->descriptor.idProduct); switch (test_pid) { case TEST_SE0_NAK_PID: ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), USB_REQ_SET_FEATURE, USB_RT_PORT, USB_PORT_FEAT_TEST, (TEST_SE0_NAK << 8) | portnum, NULL, 0, 1000); break; case TEST_J_PID: ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), USB_REQ_SET_FEATURE, USB_RT_PORT, USB_PORT_FEAT_TEST, (TEST_J << 8) | portnum, NULL, 0, 1000); break; case TEST_K_PID: ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), USB_REQ_SET_FEATURE, USB_RT_PORT, USB_PORT_FEAT_TEST, (TEST_K << 8) | portnum, NULL, 0, 1000); break; case TEST_PACKET_PID: ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), USB_REQ_SET_FEATURE, USB_RT_PORT, USB_PORT_FEAT_TEST, (TEST_PACKET << 8) | portnum, NULL, 0, 1000); break; case TEST_HS_HOST_PORT_SUSPEND_RESUME: /* Test: wait for 15secs -> suspend -> 15secs delay -> resume */ msleep(15 * 1000); ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), USB_REQ_SET_FEATURE, USB_RT_PORT, USB_PORT_FEAT_SUSPEND, portnum, NULL, 0, 1000); if (ret < 0) break; msleep(15 * 1000); ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), USB_REQ_CLEAR_FEATURE, USB_RT_PORT, USB_PORT_FEAT_SUSPEND, portnum, NULL, 0, 1000); break; case TEST_SINGLE_STEP_GET_DEV_DESC: /* Test: wait for 15secs -> GetDescriptor request */ msleep(15 * 1000); buf = kmalloc(USB_DT_DEVICE_SIZE, GFP_KERNEL); if (!buf) return -ENOMEM; ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, USB_DT_DEVICE << 8, 0, buf, USB_DT_DEVICE_SIZE, USB_CTRL_GET_TIMEOUT); kfree(buf); break; case TEST_SINGLE_STEP_SET_FEATURE: /* * GetDescriptor SETUP request -> 15secs delay -> IN & STATUS * * Note, this test is only supported on root hubs since the * SetPortFeature handling can only be done inside the HCD's * hub_control callback function. */ if (hub_udev != dev->bus->root_hub) { dev_err(&intf->dev, "SINGLE_STEP_SET_FEATURE test only supported on root hub\n"); break; } ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), USB_REQ_SET_FEATURE, USB_RT_PORT, USB_PORT_FEAT_TEST, (6 << 8) | portnum, NULL, 0, 60 * 1000); break; default: dev_err(&intf->dev, "%s: unsupported PID: 0x%x\n", __func__, test_pid); } return (ret < 0) ? ret : 0; } static void ehset_disconnect(struct usb_interface *intf) { } static const struct usb_device_id ehset_id_table[] = { { USB_DEVICE(0x1a0a, TEST_SE0_NAK_PID) }, { USB_DEVICE(0x1a0a, TEST_J_PID) }, { USB_DEVICE(0x1a0a, TEST_K_PID) }, { USB_DEVICE(0x1a0a, TEST_PACKET_PID) }, { USB_DEVICE(0x1a0a, TEST_HS_HOST_PORT_SUSPEND_RESUME) }, { USB_DEVICE(0x1a0a, TEST_SINGLE_STEP_GET_DEV_DESC) }, { USB_DEVICE(0x1a0a, TEST_SINGLE_STEP_SET_FEATURE) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, ehset_id_table); static struct usb_driver ehset_driver = { .name = "usb_ehset_test", .probe = ehset_probe, .disconnect = ehset_disconnect, .id_table = ehset_id_table, }; module_usb_driver(ehset_driver); MODULE_DESCRIPTION("USB Driver for EHSET Test Fixture"); MODULE_LICENSE("GPL v2"); /select>space:mode:
authorThomas Gleixner <tglx@linutronix.de>2017-01-31 23:58:38 +0100
committerIngo Molnar <mingo@kernel.org>2017-02-01 08:37:27 +0100
commitdd86e373e09fb16b83e8adf5c48c421a4ca76468 (patch)
tree55703c2ea8584e303e342090614e0aab3509ab21 /tools/testing/selftests/powerpc/context_switch/Makefile
parent0b3589be9b98994ce3d5aeca52445d1f5627c4ba (diff)
perf/x86/intel/rapl: Make package handling more robust
The package management code in RAPL relies on package mapping being available before a CPU is started. This changed with: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") because the ACPI/BIOS information turned out to be unreliable, but that left RAPL in broken state. This was not noticed because on a regular boot all CPUs are online before RAPL is initialized. A possible fix would be to reintroduce the mess which allocates a package data structure in CPU prepare and when it turns out to already exist in starting throw it away later in the CPU online callback. But that's a horrible hack and not required at all because RAPL becomes functional for perf only in the CPU online callback. That's correct because user space is not yet informed about the CPU being onlined, so nothing caan rely on RAPL being available on that particular CPU. Move the allocation to the CPU online callback and simplify the hotplug handling. At this point the package mapping is established and correct. This also adds a missing check for available package data in the event_init() function. Reported-by: Yasuaki Ishimatsu <yasu.isimatu@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Fixes: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") Link: http://lkml.kernel.org/r/20170131230141.212593966@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/testing/selftests/powerpc/context_switch/Makefile')