/* * amdtp-stream-trace.h - tracepoint definitions to dump a part of packet data * * Copyright (c) 2016 Takashi Sakamoto * Licensed under the terms of the GNU General Public License, version 2. */ #undef TRACE_SYSTEM #define TRACE_SYSTEM snd_firewire_lib #if !defined(_AMDTP_STREAM_TRACE_H) || defined(TRACE_HEADER_MULTI_READ) #define _AMDTP_STREAM_TRACE_H #include TRACE_EVENT(in_packet, TP_PROTO(const struct amdtp_stream *s, u32 cycles, u32 cip_header[2], unsigned int payload_quadlets, unsigned int index), TP_ARGS(s, cycles, cip_header, payload_quadlets, index), TP_STRUCT__entry( __field(unsigned int, second) __field(unsigned int, cycle) __field(int, channel) __field(int, src) __field(int, dest) __field(u32, cip_header0) __field(u32, cip_header1) __field(unsigned int, payload_quadlets) __field(unsigned int, packet_index) __field(unsigned int, irq) __field(unsigned int, index) ), TP_fast_assign( __entry->second = cycles / CYCLES_PER_SECOND; __entry->cycle = cycles % CYCLES_PER_SECOND; __entry->channel = s->context->channel; __entry->src = fw_parent_device(s->unit)->node_id; __entry->dest = fw_parent_device(s->unit)->card->node_id; __entry->cip_header0 = cip_header[0]; __entry->cip_header1 = cip_header[1]; __entry->payload_quadlets = payload_quadlets; __entry->packet_index = s->packet_index; __entry->irq = !!in_interrupt(); __entry->index = index; ), TP_printk( "%02u %04u %04x %04x %02d %08x %08x %03u %02u %01u %02u", __entry->second, __entry->cycle, __entry->src, __entry->dest, __entry->channel, __entry->cip_header0, __entry->cip_header1, __entry->payload_quadlets, __entry->packet_index, __entry->irq, __entry->index) ); TRACE_EVENT(out_packet, TP_PROTO(const struct amdtp_stream *s, u32 cycles, __be32 *cip_header, unsigned int payload_length, unsigned int index), TP_ARGS(s, cycles, cip_header, payload_length, index), TP_STRUCT__entry( __field(unsigned int, second) __field(unsigned int, cycle) __field(int, channel) __field(int, src) __field(int, dest) __field(u32, cip_header0) __field(u32, cip_header1) __field(unsigned int, payload_quadlets) __field(unsigned int, packet_index) __field(unsigned int, irq) __field(unsigned int, index) ), TP_fast_assign( __entry->second = cycles / CYCLES_PER_SECOND; __entry->cycle = cycles % CYCLES_PER_SECOND; __entry->channel = s->context->channel; __entry->src = fw_parent_device(s->unit)->card->node_id; __entry->dest = fw_parent_device(s->unit)->node_id; __entry->cip_header0 = be32_to_cpu(cip_header[0]); __entry->cip_header1 = be32_to_cpu(cip_header[1]); __entry->payload_quadlets = payload_length / 4; __entry->packet_index = s->packet_index; __entry->irq = !!in_interrupt(); __entry->index = index; ), TP_printk( "%02u %04u %04x %04x %02d %08x %08x %03u %02u %01u %02u", __entry->second, __entry->cycle, __entry->src, __entry->dest, __entry->channel, __entry->cip_header0, __entry->cip_header1, __entry->payload_quadlets, __entry->packet_index, __entry->irq, __entry->index) ); #endif #undef TRACE_INCLUDE_PATH #define TRACE_INCLUDE_PATH . #undef TRACE_INCLUDE_FILE #define TRACE_INCLUDE_FILE amdtp-stream-trace #include >
context:
space:
mode:
authorAndrei Vagin <avagin@openvz.org>2017-01-04 19:28:14 -0800
committerEric W. Biederman <ebiederm@xmission.com>2017-01-10 13:34:56 +1300
commitadd7c65ca426b7a37184dd3d2172394e23d585d6 (patch)
tree28b08b519540041b06ed0ab0b1c005076b932e8e /include/dt-bindings/memory
parent75422726b0f717d67db3283c2eb5bc14fa2619c5 (diff)
pid: fix lockdep deadlock warning due to ucount_lock
========================================================= [ INFO: possible irq lock inversion dependency detected ] 4.10.0-rc2-00024-g4aecec9-dirty #118 Tainted: G W --------------------------------------------------------- swapper/1/0 just changed the state of lock: (&(&sighand->siglock)->rlock){-.....}, at: [<ffffffffbd0a1bc6>] __lock_task_sighand+0xb6/0x2c0 but this lock took another, HARDIRQ-unsafe lock in the past: (ucounts_lock){+.+...} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Chain exists of: &(&sighand->siglock)->rlock --> &(&tty->ctrl_lock)->rlock --> ucounts_lock Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(ucounts_lock); local_irq_disable(); lock(&(&sighand->siglock)->rlock); lock(&(&tty->ctrl_lock)->rlock); <Interrupt> lock(&(&sighand->siglock)->rlock); *** DEADLOCK *** This patch removes a dependency between rlock and ucount_lock. Fixes: f333c700c610 ("pidns: Add a limit on the number of pid namespaces") Cc: stable@vger.kernel.org Signed-off-by: Andrei Vagin <avagin@openvz.org> Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'include/dt-bindings/memory')