/* * Copyright (C) 2009 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include "event-parse.h" static int call_site_handler(struct trace_seq *s, struct pevent_record *record, struct event_format *event, void *context) { struct format_field *field; unsigned long long val, addr; void *data = record->data; const char *func; field = pevent_find_field(event, "call_site"); if (!field) return 1; if (pevent_read_number_field(field, data, &val)) return 1; func = pevent_find_function(event->pevent, val); if (!func) return 1; addr = pevent_find_function_address(event->pevent, val); trace_seq_printf(s, "(%s+0x%x) ", func, (int)(val - addr)); return 1; } int PEVENT_PLUGIN_LOADER(struct pevent *pevent) { pevent_register_event_handler(pevent, -1, "kmem", "kfree", call_site_handler, NULL); pevent_register_event_handler(pevent, -1, "kmem", "kmalloc", call_site_handler, NULL); pevent_register_event_handler(pevent, -1, "kmem", "kmalloc_node", call_site_handler, NULL); pevent_register_event_handler(pevent, -1, "kmem", "kmem_cache_alloc", call_site_handler, NULL); pevent_register_event_handler(pevent, -1, "kmem", "kmem_cache_alloc_node", call_site_handler, NULL); pevent_register_event_handler(pevent, -1, "kmem", "kmem_cache_free", call_site_handler, NULL); return 0; } void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) { pevent_unregister_event_handler(pevent, -1, "kmem", "kfree", call_site_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kmem", "kmalloc", call_site_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kmem", "kmalloc_node", call_site_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kmem", "kmem_cache_alloc", call_site_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kmem", "kmem_cache_alloc_node", call_site_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kmem", "kmem_cache_free", call_site_handler, NULL); } 5e82d6796f8d446268d'>net/irda/irnet/irnet_ppp.c
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authorLinus Torvalds <torvalds@linux-foundation.org>2017-01-24 12:21:51 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-01-24 12:21:51 -0800
commit19ca2c8fecb1592d623fe5e82d6796f8d446268d (patch)
tree0756e115d125846f46b302085307768f069434a1 /net/irda/irnet/irnet_ppp.c
parenta4685d2f58e2230d4e27fb2ee581d7ea35e5d046 (diff)
parent880a38547ff08715ce4f1daf9a4bb30c87676e68 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull namespace fix from Eric Biederman: "This has a single brown bag fix. The possible deadlock with dec_pid_namespaces that I had thought was fixed earlier turned out only to have been moved. So instead of being cleaver this change takes ucounts_lock with irqs disabled. So dec_ucount can be used from any context without fear of deadlock. The items accounted for dec_ucount and inc_ucount are all comparatively heavy weight objects so I don't exepct this will have any measurable performance impact" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: userns: Make ucounts lock irq-safe
Diffstat (limited to 'net/irda/irnet/irnet_ppp.c')