gfp_t gfp_flags,
int node)
{
+ struct ftrace_event_call *call = &event_kmem_alloc;
struct trace_array *tr = kmemtrace_array;
struct kmemtrace_alloc_entry *entry;
struct ring_buffer_event *event;
entry->gfp_flags = gfp_flags;
entry->node = node;
- ring_buffer_unlock_commit(tr->buffer, event);
+ if (!filter_check_discard(call, entry, tr->buffer, event))
+ ring_buffer_unlock_commit(tr->buffer, event);
trace_wake_up();
}
unsigned long call_site,
const void *ptr)
{
+ struct ftrace_event_call *call = &event_kmem_free;
struct trace_array *tr = kmemtrace_array;
struct kmemtrace_free_entry *entry;
struct ring_buffer_event *event;
entry->call_site = call_site;
entry->ptr = ptr;
- ring_buffer_unlock_commit(tr->buffer, event);
+ if (!filter_check_discard(call, entry, tr->buffer, event))
+ ring_buffer_unlock_commit(tr->buffer, event);
trace_wake_up();
}
-static void kmemtrace_kmalloc(unsigned long call_site,
+static void kmemtrace_kmalloc(void *ignore,
+ unsigned long call_site,
const void *ptr,
size_t bytes_req,
size_t bytes_alloc,
bytes_req, bytes_alloc, gfp_flags, -1);
}
-static void kmemtrace_kmem_cache_alloc(unsigned long call_site,
+static void kmemtrace_kmem_cache_alloc(void *ignore,
+ unsigned long call_site,
const void *ptr,
size_t bytes_req,
size_t bytes_alloc,
bytes_req, bytes_alloc, gfp_flags, -1);
}
-static void kmemtrace_kmalloc_node(unsigned long call_site,
+static void kmemtrace_kmalloc_node(void *ignore,
+ unsigned long call_site,
const void *ptr,
size_t bytes_req,
size_t bytes_alloc,
bytes_req, bytes_alloc, gfp_flags, node);
}
-static void kmemtrace_kmem_cache_alloc_node(unsigned long call_site,
+static void kmemtrace_kmem_cache_alloc_node(void *ignore,
+ unsigned long call_site,
const void *ptr,
size_t bytes_req,
size_t bytes_alloc,
bytes_req, bytes_alloc, gfp_flags, node);
}
-static void kmemtrace_kfree(unsigned long call_site, const void *ptr)
+static void
+kmemtrace_kfree(void *ignore, unsigned long call_site, const void *ptr)
{
kmemtrace_free(KMEMTRACE_TYPE_KMALLOC, call_site, ptr);
}
-static void kmemtrace_kmem_cache_free(unsigned long call_site, const void *ptr)
+static void kmemtrace_kmem_cache_free(void *ignore,
+ unsigned long call_site, const void *ptr)
{
kmemtrace_free(KMEMTRACE_TYPE_CACHE, call_site, ptr);
}
{
int err;
- err = register_trace_kmalloc(kmemtrace_kmalloc);
+ err = register_trace_kmalloc(kmemtrace_kmalloc, NULL);
if (err)
return err;
- err = register_trace_kmem_cache_alloc(kmemtrace_kmem_cache_alloc);
+ err = register_trace_kmem_cache_alloc(kmemtrace_kmem_cache_alloc, NULL);
if (err)
return err;
- err = register_trace_kmalloc_node(kmemtrace_kmalloc_node);
+ err = register_trace_kmalloc_node(kmemtrace_kmalloc_node, NULL);
if (err)
return err;
- err = register_trace_kmem_cache_alloc_node(kmemtrace_kmem_cache_alloc_node);
+ err = register_trace_kmem_cache_alloc_node(kmemtrace_kmem_cache_alloc_node, NULL);
if (err)
return err;
- err = register_trace_kfree(kmemtrace_kfree);
+ err = register_trace_kfree(kmemtrace_kfree, NULL);
if (err)
return err;
- err = register_trace_kmem_cache_free(kmemtrace_kmem_cache_free);
+ err = register_trace_kmem_cache_free(kmemtrace_kmem_cache_free, NULL);
return err;
}
static void kmemtrace_stop_probes(void)
{
- unregister_trace_kmalloc(kmemtrace_kmalloc);
- unregister_trace_kmem_cache_alloc(kmemtrace_kmem_cache_alloc);
- unregister_trace_kmalloc_node(kmemtrace_kmalloc_node);
- unregister_trace_kmem_cache_alloc_node(kmemtrace_kmem_cache_alloc_node);
- unregister_trace_kfree(kmemtrace_kfree);
- unregister_trace_kmem_cache_free(kmemtrace_kmem_cache_free);
+ unregister_trace_kmalloc(kmemtrace_kmalloc, NULL);
+ unregister_trace_kmem_cache_alloc(kmemtrace_kmem_cache_alloc, NULL);
+ unregister_trace_kmalloc_node(kmemtrace_kmalloc_node, NULL);
+ unregister_trace_kmem_cache_alloc_node(kmemtrace_kmem_cache_alloc_node, NULL);
+ unregister_trace_kfree(kmemtrace_kfree, NULL);
+ unregister_trace_kmem_cache_free(kmemtrace_kmem_cache_free, NULL);
}
static int kmem_trace_init(struct trace_array *tr)
{
- int cpu;
kmemtrace_array = tr;
- for_each_cpu_mask(cpu, cpu_possible_map)
- tracing_reset(tr, cpu);
+ tracing_reset_online_cpus(tr);
kmemtrace_start_probes();
};
static enum print_line_t
-kmemtrace_print_alloc_user(struct trace_iterator *iter,
- struct kmemtrace_alloc_entry *entry)
+kmemtrace_print_alloc(struct trace_iterator *iter, int flags,
+ struct trace_event *event)
+{
+ struct trace_seq *s = &iter->seq;
+ struct kmemtrace_alloc_entry *entry;
+ int ret;
+
+ trace_assign_type(entry, iter->ent);
+
+ ret = trace_seq_printf(s, "type_id %d call_site %pF ptr %lu "
+ "bytes_req %lu bytes_alloc %lu gfp_flags %lu node %d\n",
+ entry->type_id, (void *)entry->call_site, (unsigned long)entry->ptr,
+ (unsigned long)entry->bytes_req, (unsigned long)entry->bytes_alloc,
+ (unsigned long)entry->gfp_flags, entry->node);
+
+ if (!ret)
+ return TRACE_TYPE_PARTIAL_LINE;
+ return TRACE_TYPE_HANDLED;
+}
+
+static enum print_line_t
+kmemtrace_print_free(struct trace_iterator *iter, int flags,
+ struct trace_event *event)
{
- struct kmemtrace_user_event_alloc *ev_alloc;
struct trace_seq *s = &iter->seq;
+ struct kmemtrace_free_entry *entry;
+ int ret;
+
+ trace_assign_type(entry, iter->ent);
+
+ ret = trace_seq_printf(s, "type_id %d call_site %pF ptr %lu\n",
+ entry->type_id, (void *)entry->call_site,
+ (unsigned long)entry->ptr);
+
+ if (!ret)
+ return TRACE_TYPE_PARTIAL_LINE;
+ return TRACE_TYPE_HANDLED;
+}
+
+static enum print_line_t
+kmemtrace_print_alloc_user(struct trace_iterator *iter, int flags,
+ struct trace_event *event)
+{
+ struct trace_seq *s = &iter->seq;
+ struct kmemtrace_alloc_entry *entry;
struct kmemtrace_user_event *ev;
+ struct kmemtrace_user_event_alloc *ev_alloc;
+
+ trace_assign_type(entry, iter->ent);
ev = trace_seq_reserve(s, sizeof(*ev));
if (!ev)
}
static enum print_line_t
-kmemtrace_print_free_user(struct trace_iterator *iter,
- struct kmemtrace_free_entry *entry)
+kmemtrace_print_free_user(struct trace_iterator *iter, int flags,
+ struct trace_event *event)
{
struct trace_seq *s = &iter->seq;
+ struct kmemtrace_free_entry *entry;
struct kmemtrace_user_event *ev;
+ trace_assign_type(entry, iter->ent);
+
ev = trace_seq_reserve(s, sizeof(*ev));
if (!ev)
return TRACE_TYPE_PARTIAL_LINE;
/* The two other following provide a more minimalistic output */
static enum print_line_t
-kmemtrace_print_alloc_compress(struct trace_iterator *iter,
- struct kmemtrace_alloc_entry *entry)
+kmemtrace_print_alloc_compress(struct trace_iterator *iter)
{
+ struct kmemtrace_alloc_entry *entry;
struct trace_seq *s = &iter->seq;
int ret;
+ trace_assign_type(entry, iter->ent);
+
/* Alloc entry */
ret = trace_seq_printf(s, " + ");
if (!ret)
if (!ret)
return TRACE_TYPE_PARTIAL_LINE;
- /* Node */
- ret = trace_seq_printf(s, "%4d ", entry->node);
+ /* Node and call site*/
+ ret = trace_seq_printf(s, "%4d %pf\n", entry->node,
+ (void *)entry->call_site);
if (!ret)
return TRACE_TYPE_PARTIAL_LINE;
- /* Call site */
- ret = seq_print_ip_sym(s, entry->call_site, 0);
- if (!ret)
- return TRACE_TYPE_PARTIAL_LINE;
-
- if (!trace_seq_printf(s, "\n"))
- return TRACE_TYPE_PARTIAL_LINE;
-
return TRACE_TYPE_HANDLED;
}
static enum print_line_t
-kmemtrace_print_free_compress(struct trace_iterator *iter,
- struct kmemtrace_free_entry *entry)
+kmemtrace_print_free_compress(struct trace_iterator *iter)
{
+ struct kmemtrace_free_entry *entry;
struct trace_seq *s = &iter->seq;
int ret;
+ trace_assign_type(entry, iter->ent);
+
/* Free entry */
ret = trace_seq_printf(s, " - ");
if (!ret)
if (!ret)
return TRACE_TYPE_PARTIAL_LINE;
- /* Skip node */
- ret = trace_seq_printf(s, " ");
- if (!ret)
- return TRACE_TYPE_PARTIAL_LINE;
-
- /* Call site */
- ret = seq_print_ip_sym(s, entry->call_site, 0);
+ /* Skip node and print call site*/
+ ret = trace_seq_printf(s, " %pf\n", (void *)entry->call_site);
if (!ret)
return TRACE_TYPE_PARTIAL_LINE;
- if (!trace_seq_printf(s, "\n"))
- return TRACE_TYPE_PARTIAL_LINE;
-
return TRACE_TYPE_HANDLED;
}
{
struct trace_entry *entry = iter->ent;
- switch (entry->type) {
- case TRACE_KMEM_ALLOC: {
- struct kmemtrace_alloc_entry *field;
-
- trace_assign_type(field, entry);
- if (kmem_tracer_flags.val & TRACE_KMEM_OPT_MINIMAL)
- return kmemtrace_print_alloc_compress(iter, field);
- else
- return kmemtrace_print_alloc_user(iter, field);
- }
-
- case TRACE_KMEM_FREE: {
- struct kmemtrace_free_entry *field;
-
- trace_assign_type(field, entry);
- if (kmem_tracer_flags.val & TRACE_KMEM_OPT_MINIMAL)
- return kmemtrace_print_free_compress(iter, field);
- else
- return kmemtrace_print_free_user(iter, field);
- }
+ if (!(kmem_tracer_flags.val & TRACE_KMEM_OPT_MINIMAL))
+ return TRACE_TYPE_UNHANDLED;
+ switch (entry->type) {
+ case TRACE_KMEM_ALLOC:
+ return kmemtrace_print_alloc_compress(iter);
+ case TRACE_KMEM_FREE:
+ return kmemtrace_print_free_compress(iter);
default:
return TRACE_TYPE_UNHANDLED;
}
}
+static struct trace_event_functions kmem_trace_alloc_funcs = {
+ .trace = kmemtrace_print_alloc,
+ .binary = kmemtrace_print_alloc_user,
+};
+
+static struct trace_event kmem_trace_alloc = {
+ .type = TRACE_KMEM_ALLOC,
+ .funcs = &kmem_trace_alloc_funcs,
+};
+
+static struct trace_event_functions kmem_trace_free_funcs = {
+ .trace = kmemtrace_print_free,
+ .binary = kmemtrace_print_free_user,
+};
+
+static struct trace_event kmem_trace_free = {
+ .type = TRACE_KMEM_FREE,
+ .funcs = &kmem_trace_free_funcs,
+};
+
static struct tracer kmem_tracer __read_mostly = {
.name = "kmemtrace",
.init = kmem_trace_init,
static int __init init_kmem_tracer(void)
{
- return register_tracer(&kmem_tracer);
+ if (!register_ftrace_event(&kmem_trace_alloc)) {
+ pr_warning("Warning: could not register kmem events\n");
+ return 1;
+ }
+
+ if (!register_ftrace_event(&kmem_trace_free)) {
+ pr_warning("Warning: could not register kmem events\n");
+ return 1;
+ }
+
+ if (register_tracer(&kmem_tracer) != 0) {
+ pr_warning("Warning: could not register the kmem tracer\n");
+ return 1;
+ }
+
+ return 0;
}
device_initcall(init_kmem_tracer);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff