#include #include #include #include #include #include #include #include #include #include #include #include #include "trace-event.h" #include "machine.h" #include "util.h" /* * global trace_event object used by trace_event__tp_format * * TODO There's no cleanup call for this. Add some sort of * __exit function support and call trace_event__cleanup * there. */ static struct trace_event tevent; static bool tevent_initialized; int trace_event__init(struct trace_event *t) { struct pevent *pevent = pevent_alloc(); if (pevent) { t->plugin_list = traceevent_load_plugins(pevent); t->pevent = pevent; } return pevent ? 0 : -1; } static int trace_event__init2(void) { int be = traceevent_host_bigendian(); struct pevent *pevent; if (trace_event__init(&tevent)) return -1; pevent = tevent.pevent; pevent_set_flag(pevent, PEVENT_NSEC_OUTPUT); pevent_set_file_bigendian(pevent, be); pevent_set_host_bigendian(pevent, be); tevent_initialized = true; return 0; } int trace_event__register_resolver(struct machine *machine, pevent_func_resolver_t *func) { if (!tevent_initialized && trace_event__init2()) return -1; return pevent_set_function_resolver(tevent.pevent, func, machine); } void trace_event__cleanup(struct trace_event *t) { traceevent_unload_plugins(t->plugin_list, t->pevent); pevent_free(t->pevent); } /* * Returns pointer with encoded error via interface. */ static struct event_format* tp_format(const char *sys, const char *name) { struct pevent *pevent = tevent.pevent; struct event_format *event = NULL; char path[PATH_MAX]; size_t size; char *data; int err; scnprintf(path, PATH_MAX, "%s/%s/%s/format", tracing_events_path, sys, name); err = filename__read_str(path, &data, &size); if (err) return ERR_PTR(err); pevent_parse_format(pevent, &event, data, size, sys); free(data); return event; } /* * Returns pointer with encoded error via interface. */ struct event_format* trace_event__tp_format(const char *sys, const char *name) { if (!tevent_initialized && trace_event__init2()) return ERR_PTR(-ENOMEM); return tp_format(sys, name); } struct event_format *trace_event__tp_format_id(int id) { if (!tevent_initialized && trace_event__init2()) return ERR_PTR(-ENOMEM); return pevent_find_event(tevent.pevent, id); } nds-private-remove'/>
path: root/include/trace/events/cma.h
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authorLinus Torvalds <torvalds@linux-foundation.org>2017-01-15 16:09:50 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-01-15 16:09:50 -0800
commit99421c1cb27fb837e93b517036fab4500fe39de5 (patch)
treede5fc5bacb671223f389793ad643cebe520bc292 /include/trace/events/cma.h
parentc92816275674c1491ce228ee49aa030a5fa1be04 (diff)
parent93362fa47fe98b62e4a34ab408c4a418432e7939 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull namespace fixes from Eric Biederman: "This tree contains 4 fixes. The first is a fix for a race that can causes oopses under the right circumstances, and that someone just recently encountered. Past that are several small trivial correct fixes. A real issue that was blocking development of an out of tree driver, but does not appear to have caused any actual problems for in-tree code. A potential deadlock that was reported by lockdep. And a deadlock people have experienced and took the time to track down caused by a cleanup that removed the code to drop a reference count" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: sysctl: Drop reference added by grab_header in proc_sys_readdir pid: fix lockdep deadlock warning due to ucount_lock libfs: Modify mount_pseudo_xattr to be clear it is not a userspace mount mnt: Protect the mountpoint hashtable with mount_lock
Diffstat (limited to 'include/trace/events/cma.h')