/* Miscellaneous bits * * Copyright (C) 2016 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public Licence * as published by the Free Software Foundation; either version * 2 of the Licence, or (at your option) any later version. */ #include #include #include #include "ar-internal.h" /* * The maximum listening backlog queue size that may be set on a socket by * listen(). */ unsigned int rxrpc_max_backlog __read_mostly = 10; /* * Maximum lifetime of a call (in mx). */ unsigned int rxrpc_max_call_lifetime = 60 * 1000; /* * How long to wait before scheduling ACK generation after seeing a * packet with RXRPC_REQUEST_ACK set (in ms). */ unsigned int rxrpc_requested_ack_delay = 1; /* * How long to wait before scheduling an ACK with subtype DELAY (in ms). * * We use this when we've received new data packets. If those packets aren't * all consumed within this time we will send a DELAY ACK if an ACK was not * requested to let the sender know it doesn't need to resend. */ unsigned int rxrpc_soft_ack_delay = 1 * 1000; /* * How long to wait before scheduling an ACK with subtype IDLE (in ms). * * We use this when we've consumed some previously soft-ACK'd packets when * further packets aren't immediately received to decide when to send an IDLE * ACK let the other end know that it can free up its Tx buffer space. */ unsigned int rxrpc_idle_ack_delay = 0.5 * 1000; /* * Receive window size in packets. This indicates the maximum number of * unconsumed received packets we're willing to retain in memory. Once this * limit is hit, we should generate an EXCEEDS_WINDOW ACK and discard further * packets. */ unsigned int rxrpc_rx_window_size = RXRPC_INIT_RX_WINDOW_SIZE; #if (RXRPC_RXTX_BUFF_SIZE - 1) < RXRPC_INIT_RX_WINDOW_SIZE #error Need to reduce RXRPC_INIT_RX_WINDOW_SIZE #endif /* * Maximum Rx MTU size. This indicates to the sender the size of jumbo packet * made by gluing normal packets together that we're willing to handle. */ unsigned int rxrpc_rx_mtu = 5692; /* * The maximum number of fragments in a received jumbo packet that we tell the * sender that we're willing to handle. */ unsigned int rxrpc_rx_jumbo_max = 4; /* * Time till packet resend (in milliseconds). */ unsigned int rxrpc_resend_timeout = 4 * 1000; const s8 rxrpc_ack_priority[] = { [0] = 0, [RXRPC_ACK_DELAY] = 1, [RXRPC_ACK_REQUESTED] = 2, [RXRPC_ACK_IDLE] = 3, [RXRPC_ACK_DUPLICATE] = 4, [RXRPC_ACK_OUT_OF_SEQUENCE] = 5, [RXRPC_ACK_EXCEEDS_WINDOW] = 6, [RXRPC_ACK_NOSPACE] = 7, [RXRPC_ACK_PING_RESPONSE] = 8, }; t/commit/?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>root/sound/isa/msnd/msnd_pinnacle.c
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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 /sound/isa/msnd/msnd_pinnacle.c
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 'sound/isa/msnd/msnd_pinnacle.c')