/* * acpi_lpat.h - LPAT table processing functions * * Copyright (C) 2015 Intel Corporation. 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 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. */ #ifndef ACPI_LPAT_H #define ACPI_LPAT_H struct acpi_lpat { int temp; int raw; }; struct acpi_lpat_conversion_table { struct acpi_lpat *lpat; int lpat_count; }; #ifdef CONFIG_ACPI int acpi_lpat_raw_to_temp(struct acpi_lpat_conversion_table *lpat_table, int raw); int acpi_lpat_temp_to_raw(struct acpi_lpat_conversion_table *lpat_table, int temp); struct acpi_lpat_conversion_table *acpi_lpat_get_conversion_table(acpi_handle handle); void acpi_lpat_free_conversion_table(struct acpi_lpat_conversion_table *lpat_table); #else static int acpi_lpat_raw_to_temp(struct acpi_lpat_conversion_table *lpat_table, int raw) { return 0; } static int acpi_lpat_temp_to_raw(struct acpi_lpat_conversion_table *lpat_table, int temp) { return 0; } static struct acpi_lpat_conversion_table *acpi_lpat_get_conversion_table( acpi_handle handle) { return NULL; } static void acpi_lpat_free_conversion_table(struct acpi_lpat_conversion_table *lpat_table) { } #endif #endif cgit.cgi/linux/net-next.git/refs/?id=433e19cf33d34bb6751c874a9c00980552fe508c'>refslogtreecommitdiff
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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 /net/ax25/af_ax25.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 'net/ax25/af_ax25.c')