/** AudioScience HPI driver Copyright (C) 1997-2014 AudioScience Inc. This program is free software; you can redistribute it and/or modify it under the terms of version 2 of the GNU General Public License 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. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ struct hpi_adapter_obj; /* a function that takes an adapter obj and returns an int */ typedef int adapter_int_func(struct hpi_adapter_obj *pao, u32 message); #define HPI_IRQ_NONE (0) #define HPI_IRQ_MESSAGE (1) #define HPI_IRQ_MIXER (2) struct hpi_adapter_obj { struct hpi_pci pci; /* PCI info - bus#,dev#,address etc */ u16 type; /* 0x6644 == ASI6644 etc */ u16 index; struct hpios_spinlock dsp_lock; u16 dsp_crashed; u16 has_control_cache; void *priv; adapter_int_func *irq_query_and_clear; struct hpi_hostbuffer_status *instream_host_buffer_status; struct hpi_hostbuffer_status *outstream_host_buffer_status; }; struct hpi_control_cache { /** indicates whether the structures are initialized */ u16 init; u16 adap_idx; u32 control_count; u32 cache_size_in_bytes; /** pointer to allocated memory of lookup pointers. */ struct hpi_control_cache_info **p_info; /** pointer to DSP's control cache. */ u8 *p_cache; }; struct hpi_adapter_obj *hpi_find_adapter(u16 adapter_index); u16 hpi_add_adapter(struct hpi_adapter_obj *pao); void hpi_delete_adapter(struct hpi_adapter_obj *pao); short hpi_check_control_cache(struct hpi_control_cache *pC, struct hpi_message *phm, struct hpi_response *phr); short hpi_check_control_cache_single(struct hpi_control_cache_single *pC, struct hpi_message *phm, struct hpi_response *phr); struct hpi_control_cache *hpi_alloc_control_cache(const u32 number_of_controls, const u32 size_in_bytes, u8 *pDSP_control_buffer); void hpi_free_control_cache(struct hpi_control_cache *p_cache); void hpi_cmn_control_cache_sync_to_msg(struct hpi_control_cache *pC, struct hpi_message *phm, struct hpi_response *phr); void hpi_cmn_control_cache_sync_to_msg_single(struct hpi_control_cache_single *pC, struct hpi_message *phm, struct hpi_response *phr); u16 hpi_validate_response(struct hpi_message *phm, struct hpi_response *phr); hpi_handler_func HPI_COMMON; name='q' value=''/>
path: root/tools/testing/selftests/rcutorture/configs/rcuperf
ption value='2'>2
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authorDexuan Cui <decui@microsoft.com>2017-01-28 11:46:02 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-01-31 10:59:48 +0100
commit433e19cf33d34bb6751c874a9c00980552fe508c (patch)
treece6547ef2987fbb289fa28f03536328a42781651 /drivers/usb/host/ohci-tilegx.c
parent191e885a2e130e639bb0c8ee350d7047294f2ce6 (diff)
Drivers: hv: vmbus: finally fix hv_need_to_signal_on_read()
Commit a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") added the proper mb(), but removed the test "prev_write_sz < pending_sz" when making the signal decision. As a result, the guest can signal the host unnecessarily, and then the host can throttle the guest because the host thinks the guest is buggy or malicious; finally the user running stress test can perceive intermittent freeze of the guest. This patch brings back the test, and properly handles the in-place consumption APIs used by NetVSC (see get_next_pkt_raw(), put_pkt_raw() and commit_rd_index()). Fixes: a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") Signed-off-by: Dexuan Cui <decui@microsoft.com> Reported-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Tested-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: <stable@vger.kernel.org> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ohci-tilegx.c')