/* AFS tracepoints * * 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. */ #undef TRACE_SYSTEM #define TRACE_SYSTEM afs #if !defined(_TRACE_AFS_H) || defined(TRACE_HEADER_MULTI_READ) #define _TRACE_AFS_H #include /* * Define enums for tracing information. */ #ifndef __AFS_DECLARE_TRACE_ENUMS_ONCE_ONLY #define __AFS_DECLARE_TRACE_ENUMS_ONCE_ONLY enum afs_call_trace { afs_call_trace_alloc, afs_call_trace_free, afs_call_trace_put, afs_call_trace_wake, afs_call_trace_work, }; #endif /* end __AFS_DECLARE_TRACE_ENUMS_ONCE_ONLY */ /* * Declare tracing information enums and their string mappings for display. */ #define afs_call_traces \ EM(afs_call_trace_alloc, "ALLOC") \ EM(afs_call_trace_free, "FREE ") \ EM(afs_call_trace_put, "PUT ") \ EM(afs_call_trace_wake, "WAKE ") \ E_(afs_call_trace_work, "WORK ") /* * Export enum symbols via userspace. */ #undef EM #undef E_ #define EM(a, b) TRACE_DEFINE_ENUM(a); #define E_(a, b) TRACE_DEFINE_ENUM(a); afs_call_traces; /* * Now redefine the EM() and E_() macros to map the enums to the strings that * will be printed in the output. */ #undef EM #undef E_ #define EM(a, b) { a, b }, #define E_(a, b) { a, b } TRACE_EVENT(afs_recv_data, TP_PROTO(struct afs_call *call, unsigned count, unsigned offset, bool want_more, int ret), TP_ARGS(call, count, offset, want_more, ret), TP_STRUCT__entry( __field(struct rxrpc_call *, rxcall ) __field(struct afs_call *, call ) __field(enum afs_call_state, state ) __field(unsigned int, count ) __field(unsigned int, offset ) __field(unsigned short, unmarshall ) __field(bool, want_more ) __field(int, ret ) ), TP_fast_assign( __entry->rxcall = call->rxcall; __entry->call = call; __entry->state = call->state; __entry->unmarshall = call->unmarshall; __entry->count = count; __entry->offset = offset; __entry->want_more = want_more; __entry->ret = ret; ), TP_printk("c=%p ac=%p s=%u u=%u %u/%u wm=%u ret=%d", __entry->rxcall, __entry->call, __entry->state, __entry->unmarshall, __entry->offset, __entry->count, __entry->want_more, __entry->ret) ); TRACE_EVENT(afs_notify_call, TP_PROTO(struct rxrpc_call *rxcall, struct afs_call *call), TP_ARGS(rxcall, call), TP_STRUCT__entry( __field(struct rxrpc_call *, rxcall ) __field(struct afs_call *, call ) __field(enum afs_call_state, state ) __field(unsigned short, unmarshall ) ), TP_fast_assign( __entry->rxcall = rxcall; __entry->call = call; __entry->state = call->state; __entry->unmarshall = call->unmarshall; ), TP_printk("c=%p ac=%p s=%u u=%u", __entry->rxcall, __entry->call, __entry->state, __entry->unmarshall) ); TRACE_EVENT(afs_cb_call, TP_PROTO(struct afs_call *call), TP_ARGS(call), TP_STRUCT__entry( __field(struct rxrpc_call *, rxcall ) __field(struct afs_call *, call ) __field(const char *, name ) __field(u32, op ) ), TP_fast_assign( __entry->rxcall = call->rxcall; __entry->call = call; __entry->name = call->type->name; __entry->op = call->operation_ID; ), TP_printk("c=%p ac=%p %s o=%u", __entry->rxcall, __entry->call, __entry->name, __entry->op) ); TRACE_EVENT(afs_call, TP_PROTO(struct afs_call *call, enum afs_call_trace op, int usage, int outstanding, const void *where), TP_ARGS(call, op, usage, outstanding, where), TP_STRUCT__entry( __field(struct afs_call *, call ) __field(int, op ) __field(int, usage ) __field(int, outstanding ) __field(const void *, where ) ), TP_fast_assign( __entry->call = call; __entry->op = op; __entry->usage = usage; __entry->outstanding = outstanding; __entry->where = where; ), TP_printk("c=%p %s u=%d o=%d sp=%pSR", __entry->call, __print_symbolic(__entry->op, afs_call_traces), __entry->usage, __entry->outstanding, __entry->where) ); #endif /* _TRACE_AFS_H */ /* This part must be outside protection */ #include ='ctrl'>
authorMarc Zyngier <marc.zyngier@arm.com>2017-01-17 16:00:48 +0000
committerThomas Gleixner <tglx@linutronix.de>2017-01-30 15:18:56 +0100
commit08d85f3ea99f1eeafc4e8507936190e86a16ee8c (patch)
tree410bb1acd0cd7dcfaad37ae7b63ff243b7fa4bee /include/net/raw.h
parent566cf877a1fcb6d6dc0126b076aad062054c2637 (diff)
irqdomain: Avoid activating interrupts more than once
Since commit f3b0946d629c ("genirq/msi: Make sure PCI MSIs are activated early"), we can end-up activating a PCI/MSI twice (once at allocation time, and once at startup time). This is normally of no consequences, except that there is some HW out there that may misbehave if activate is used more than once (the GICv3 ITS, for example, uses the activate callback to issue the MAPVI command, and the architecture spec says that "If there is an existing mapping for the EventID-DeviceID combination, behavior is UNPREDICTABLE"). While this could be worked around in each individual driver, it may make more sense to tackle the issue at the core level. In order to avoid getting in that situation, let's have a per-interrupt flag to remember if we have already activated that interrupt or not. Fixes: f3b0946d629c ("genirq/msi: Make sure PCI MSIs are activated early") Reported-and-tested-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1484668848-24361-1-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/net/raw.h')