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Date: Fri, 3 Apr 2009 10:36:45 GMT
From: Eduard - Gabriel Munteanu <eduard.munteanu@...ux360.ro>
To: linux-tip-commits@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
penberg@...helsinki.fi, eduard.munteanu@...ux360.ro,
tglx@...utronix.de, mingo@...e.hu
Subject: [tip:tracing/kmemtrace-v2] kmemtrace: use tracepoints
Commit-ID: ca2b84cb3c4a0d4d2143b46ec072cdff5d1b3b87
Gitweb: http://git.kernel.org/tip/ca2b84cb3c4a0d4d2143b46ec072cdff5d1b3b87
Author: Eduard - Gabriel Munteanu <eduard.munteanu@...ux360.ro>
AuthorDate: Mon, 23 Mar 2009 15:12:24 +0200
Committer: Ingo Molnar <mingo@...e.hu>
CommitDate: Fri, 3 Apr 2009 12:23:06 +0200
kmemtrace: use tracepoints
kmemtrace now uses tracepoints instead of markers. We no longer need to
use format specifiers to pass arguments.
Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@...ux360.ro>
[ folded: Use the new TP_PROTO and TP_ARGS to fix the build. ]
[ folded: fix build when CONFIG_KMEMTRACE is disabled. ]
[ folded: define tracepoints when CONFIG_TRACEPOINTS is enabled. ]
Signed-off-by: Pekka Enberg <penberg@...helsinki.fi>
LKML-Reference: <ae61c0f37156db8ec8dc0d5778018edde60a92e3.1237813499.git.eduard.munteanu@...ux360.ro>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
include/linux/slab_def.h | 10 +-
include/linux/slub_def.h | 12 +--
include/trace/kmemtrace.h | 92 +++++++++-----------
kernel/trace/kmemtrace.c | 206 +++++++++++++++++++++++++++++++-------------
kernel/trace/trace.h | 6 ++
mm/slab.c | 24 +++---
mm/slob.c | 28 +++----
mm/slub.c | 30 +++----
mm/util.c | 16 ++++
9 files changed, 251 insertions(+), 173 deletions(-)
diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h
index f452365..5ac9b0b 100644
--- a/include/linux/slab_def.h
+++ b/include/linux/slab_def.h
@@ -73,8 +73,8 @@ found:
ret = kmem_cache_alloc_notrace(cachep, flags);
- kmemtrace_mark_alloc(KMEMTRACE_TYPE_KMALLOC, _THIS_IP_, ret,
- size, slab_buffer_size(cachep), flags);
+ trace_kmalloc(_THIS_IP_, ret,
+ size, slab_buffer_size(cachep), flags);
return ret;
}
@@ -128,9 +128,9 @@ found:
ret = kmem_cache_alloc_node_notrace(cachep, flags, node);
- kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC, _THIS_IP_,
- ret, size, slab_buffer_size(cachep),
- flags, node);
+ trace_kmalloc_node(_THIS_IP_, ret,
+ size, slab_buffer_size(cachep),
+ flags, node);
return ret;
}
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index a1f9052..5046f90 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -233,8 +233,7 @@ static __always_inline void *kmalloc_large(size_t size, gfp_t flags)
unsigned int order = get_order(size);
void *ret = (void *) __get_free_pages(flags | __GFP_COMP, order);
- kmemtrace_mark_alloc(KMEMTRACE_TYPE_KMALLOC, _THIS_IP_, ret,
- size, PAGE_SIZE << order, flags);
+ trace_kmalloc(_THIS_IP_, ret, size, PAGE_SIZE << order, flags);
return ret;
}
@@ -255,9 +254,7 @@ static __always_inline void *kmalloc(size_t size, gfp_t flags)
ret = kmem_cache_alloc_notrace(s, flags);
- kmemtrace_mark_alloc(KMEMTRACE_TYPE_KMALLOC,
- _THIS_IP_, ret,
- size, s->size, flags);
+ trace_kmalloc(_THIS_IP_, ret, size, s->size, flags);
return ret;
}
@@ -296,9 +293,8 @@ static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
ret = kmem_cache_alloc_node_notrace(s, flags, node);
- kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC,
- _THIS_IP_, ret,
- size, s->size, flags, node);
+ trace_kmalloc_node(_THIS_IP_, ret,
+ size, s->size, flags, node);
return ret;
}
diff --git a/include/trace/kmemtrace.h b/include/trace/kmemtrace.h
index ad8b785..28ee69f 100644
--- a/include/trace/kmemtrace.h
+++ b/include/trace/kmemtrace.h
@@ -9,65 +9,53 @@
#ifdef __KERNEL__
+#include <linux/tracepoint.h>
#include <linux/types.h>
-#include <linux/marker.h>
-
-enum kmemtrace_type_id {
- KMEMTRACE_TYPE_KMALLOC = 0, /* kmalloc() or kfree(). */
- KMEMTRACE_TYPE_CACHE, /* kmem_cache_*(). */
- KMEMTRACE_TYPE_PAGES, /* __get_free_pages() and friends. */
-};
#ifdef CONFIG_KMEMTRACE
-
extern void kmemtrace_init(void);
-
-extern void kmemtrace_mark_alloc_node(enum kmemtrace_type_id type_id,
- unsigned long call_site,
- const void *ptr,
- size_t bytes_req,
- size_t bytes_alloc,
- gfp_t gfp_flags,
- int node);
-
-extern void kmemtrace_mark_free(enum kmemtrace_type_id type_id,
- unsigned long call_site,
- const void *ptr);
-
-#else /* CONFIG_KMEMTRACE */
-
+#else
static inline void kmemtrace_init(void)
{
}
-
-static inline void kmemtrace_mark_alloc_node(enum kmemtrace_type_id type_id,
- unsigned long call_site,
- const void *ptr,
- size_t bytes_req,
- size_t bytes_alloc,
- gfp_t gfp_flags,
- int node)
-{
-}
-
-static inline void kmemtrace_mark_free(enum kmemtrace_type_id type_id,
- unsigned long call_site,
- const void *ptr)
-{
-}
-
-#endif /* CONFIG_KMEMTRACE */
-
-static inline void kmemtrace_mark_alloc(enum kmemtrace_type_id type_id,
- unsigned long call_site,
- const void *ptr,
- size_t bytes_req,
- size_t bytes_alloc,
- gfp_t gfp_flags)
-{
- kmemtrace_mark_alloc_node(type_id, call_site, ptr,
- bytes_req, bytes_alloc, gfp_flags, -1);
-}
+#endif
+
+DECLARE_TRACE(kmalloc,
+ TP_PROTO(unsigned long call_site,
+ const void *ptr,
+ size_t bytes_req,
+ size_t bytes_alloc,
+ gfp_t gfp_flags),
+ TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags));
+DECLARE_TRACE(kmem_cache_alloc,
+ TP_PROTO(unsigned long call_site,
+ const void *ptr,
+ size_t bytes_req,
+ size_t bytes_alloc,
+ gfp_t gfp_flags),
+ TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags));
+DECLARE_TRACE(kmalloc_node,
+ TP_PROTO(unsigned long call_site,
+ const void *ptr,
+ size_t bytes_req,
+ size_t bytes_alloc,
+ gfp_t gfp_flags,
+ int node),
+ TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags, node));
+DECLARE_TRACE(kmem_cache_alloc_node,
+ TP_PROTO(unsigned long call_site,
+ const void *ptr,
+ size_t bytes_req,
+ size_t bytes_alloc,
+ gfp_t gfp_flags,
+ int node),
+ TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags, node));
+DECLARE_TRACE(kfree,
+ TP_PROTO(unsigned long call_site, const void *ptr),
+ TP_ARGS(call_site, ptr));
+DECLARE_TRACE(kmem_cache_free,
+ TP_PROTO(unsigned long call_site, const void *ptr),
+ TP_ARGS(call_site, ptr));
#endif /* __KERNEL__ */
diff --git a/kernel/trace/kmemtrace.c b/kernel/trace/kmemtrace.c
index ae201b3..4f7b5db 100644
--- a/kernel/trace/kmemtrace.c
+++ b/kernel/trace/kmemtrace.c
@@ -10,6 +10,7 @@
#include <linux/debugfs.h>
#include <linux/fs.h>
#include <linux/seq_file.h>
+#include <linux/tracepoint.h>
#include <trace/kmemtrace.h>
#include "trace.h"
@@ -29,10 +30,150 @@ static struct tracer_flags kmem_tracer_flags = {
.opts = kmem_opts
};
-
-static bool kmem_tracing_enabled __read_mostly;
static struct trace_array *kmemtrace_array;
+/* Trace allocations */
+static inline void kmemtrace_alloc(enum kmemtrace_type_id type_id,
+ unsigned long call_site,
+ const void *ptr,
+ size_t bytes_req,
+ size_t bytes_alloc,
+ gfp_t gfp_flags,
+ int node)
+{
+ struct ring_buffer_event *event;
+ struct kmemtrace_alloc_entry *entry;
+ struct trace_array *tr = kmemtrace_array;
+
+ event = ring_buffer_lock_reserve(tr->buffer, sizeof(*entry));
+ if (!event)
+ return;
+ entry = ring_buffer_event_data(event);
+ tracing_generic_entry_update(&entry->ent, 0, 0);
+
+ entry->ent.type = TRACE_KMEM_ALLOC;
+ entry->call_site = call_site;
+ entry->ptr = ptr;
+ entry->bytes_req = bytes_req;
+ entry->bytes_alloc = bytes_alloc;
+ entry->gfp_flags = gfp_flags;
+ entry->node = node;
+
+ ring_buffer_unlock_commit(tr->buffer, event);
+
+ trace_wake_up();
+}
+
+static inline void kmemtrace_free(enum kmemtrace_type_id type_id,
+ unsigned long call_site,
+ const void *ptr)
+{
+ struct ring_buffer_event *event;
+ struct kmemtrace_free_entry *entry;
+ struct trace_array *tr = kmemtrace_array;
+
+ event = ring_buffer_lock_reserve(tr->buffer, sizeof(*entry));
+ if (!event)
+ return;
+ entry = ring_buffer_event_data(event);
+ tracing_generic_entry_update(&entry->ent, 0, 0);
+
+ entry->ent.type = TRACE_KMEM_FREE;
+ entry->type_id = type_id;
+ entry->call_site = call_site;
+ entry->ptr = ptr;
+
+ ring_buffer_unlock_commit(tr->buffer, event);
+
+ trace_wake_up();
+}
+
+static void kmemtrace_kmalloc(unsigned long call_site,
+ const void *ptr,
+ size_t bytes_req,
+ size_t bytes_alloc,
+ gfp_t gfp_flags)
+{
+ kmemtrace_alloc(KMEMTRACE_TYPE_KMALLOC, call_site, ptr,
+ bytes_req, bytes_alloc, gfp_flags, -1);
+}
+
+static void kmemtrace_kmem_cache_alloc(unsigned long call_site,
+ const void *ptr,
+ size_t bytes_req,
+ size_t bytes_alloc,
+ gfp_t gfp_flags)
+{
+ kmemtrace_alloc(KMEMTRACE_TYPE_CACHE, call_site, ptr,
+ bytes_req, bytes_alloc, gfp_flags, -1);
+}
+
+static void kmemtrace_kmalloc_node(unsigned long call_site,
+ const void *ptr,
+ size_t bytes_req,
+ size_t bytes_alloc,
+ gfp_t gfp_flags,
+ int node)
+{
+ kmemtrace_alloc(KMEMTRACE_TYPE_KMALLOC, call_site, ptr,
+ bytes_req, bytes_alloc, gfp_flags, node);
+}
+
+static void kmemtrace_kmem_cache_alloc_node(unsigned long call_site,
+ const void *ptr,
+ size_t bytes_req,
+ size_t bytes_alloc,
+ gfp_t gfp_flags,
+ int node)
+{
+ kmemtrace_alloc(KMEMTRACE_TYPE_CACHE, call_site, ptr,
+ bytes_req, bytes_alloc, gfp_flags, node);
+}
+
+static void kmemtrace_kfree(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)
+{
+ kmemtrace_free(KMEMTRACE_TYPE_CACHE, call_site, ptr);
+}
+
+static int kmemtrace_start_probes(void)
+{
+ int err;
+
+ err = register_trace_kmalloc(kmemtrace_kmalloc);
+ if (err)
+ return err;
+ err = register_trace_kmem_cache_alloc(kmemtrace_kmem_cache_alloc);
+ if (err)
+ return err;
+ err = register_trace_kmalloc_node(kmemtrace_kmalloc_node);
+ if (err)
+ return err;
+ err = register_trace_kmem_cache_alloc_node(kmemtrace_kmem_cache_alloc_node);
+ if (err)
+ return err;
+ err = register_trace_kfree(kmemtrace_kfree);
+ if (err)
+ return err;
+ err = register_trace_kmem_cache_free(kmemtrace_kmem_cache_free);
+
+ 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);
+}
+
static int kmem_trace_init(struct trace_array *tr)
{
int cpu;
@@ -41,14 +182,14 @@ static int kmem_trace_init(struct trace_array *tr)
for_each_cpu_mask(cpu, cpu_possible_map)
tracing_reset(tr, cpu);
- kmem_tracing_enabled = true;
+ kmemtrace_start_probes();
return 0;
}
static void kmem_trace_reset(struct trace_array *tr)
{
- kmem_tracing_enabled = false;
+ kmemtrace_stop_probes();
}
static void kmemtrace_headers(struct seq_file *s)
@@ -260,63 +401,6 @@ static enum print_line_t kmemtrace_print_line(struct trace_iterator *iter)
}
}
-/* Trace allocations */
-void kmemtrace_mark_alloc_node(enum kmemtrace_type_id type_id,
- unsigned long call_site,
- const void *ptr,
- size_t bytes_req,
- size_t bytes_alloc,
- gfp_t gfp_flags,
- int node)
-{
- struct ring_buffer_event *event;
- struct kmemtrace_alloc_entry *entry;
- struct trace_array *tr = kmemtrace_array;
-
- if (!kmem_tracing_enabled)
- return;
-
- event = trace_buffer_lock_reserve(tr, TRACE_KMEM_ALLOC,
- sizeof(*entry), 0, 0);
- if (!event)
- return;
- entry = ring_buffer_event_data(event);
-
- entry->call_site = call_site;
- entry->ptr = ptr;
- entry->bytes_req = bytes_req;
- entry->bytes_alloc = bytes_alloc;
- entry->gfp_flags = gfp_flags;
- entry->node = node;
-
- trace_buffer_unlock_commit(tr, event, 0, 0);
-}
-EXPORT_SYMBOL(kmemtrace_mark_alloc_node);
-
-void kmemtrace_mark_free(enum kmemtrace_type_id type_id,
- unsigned long call_site,
- const void *ptr)
-{
- struct ring_buffer_event *event;
- struct kmemtrace_free_entry *entry;
- struct trace_array *tr = kmemtrace_array;
-
- if (!kmem_tracing_enabled)
- return;
-
- event = trace_buffer_lock_reserve(tr, TRACE_KMEM_FREE,
- sizeof(*entry), 0, 0);
- if (!event)
- return;
- entry = ring_buffer_event_data(event);
- entry->type_id = type_id;
- entry->call_site = call_site;
- entry->ptr = ptr;
-
- trace_buffer_unlock_commit(tr, event, 0, 0);
-}
-EXPORT_SYMBOL(kmemtrace_mark_free);
-
static struct tracer kmem_tracer __read_mostly = {
.name = "kmemtrace",
.init = kmem_trace_init,
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index cb0ce3f..cbc168f 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -182,6 +182,12 @@ struct trace_power {
struct power_trace state_data;
};
+enum kmemtrace_type_id {
+ KMEMTRACE_TYPE_KMALLOC = 0, /* kmalloc() or kfree(). */
+ KMEMTRACE_TYPE_CACHE, /* kmem_cache_*(). */
+ KMEMTRACE_TYPE_PAGES, /* __get_free_pages() and friends. */
+};
+
struct kmemtrace_alloc_entry {
struct trace_entry ent;
enum kmemtrace_type_id type_id;
diff --git a/mm/slab.c b/mm/slab.c
index 9ec66c3..fa00fd6 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3565,8 +3565,8 @@ void *kmem_cache_alloc(struct kmem_cache *cachep, gfp_t flags)
{
void *ret = __cache_alloc(cachep, flags, __builtin_return_address(0));
- kmemtrace_mark_alloc(KMEMTRACE_TYPE_CACHE, _RET_IP_, ret,
- obj_size(cachep), cachep->buffer_size, flags);
+ trace_kmem_cache_alloc(_RET_IP_, ret,
+ obj_size(cachep), cachep->buffer_size, flags);
return ret;
}
@@ -3627,9 +3627,9 @@ void *kmem_cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid)
void *ret = __cache_alloc_node(cachep, flags, nodeid,
__builtin_return_address(0));
- kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_CACHE, _RET_IP_, ret,
- obj_size(cachep), cachep->buffer_size,
- flags, nodeid);
+ trace_kmem_cache_alloc_node(_RET_IP_, ret,
+ obj_size(cachep), cachep->buffer_size,
+ flags, nodeid);
return ret;
}
@@ -3657,9 +3657,8 @@ __do_kmalloc_node(size_t size, gfp_t flags, int node, void *caller)
return cachep;
ret = kmem_cache_alloc_node_notrace(cachep, flags, node);
- kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC,
- (unsigned long) caller, ret,
- size, cachep->buffer_size, flags, node);
+ trace_kmalloc_node((unsigned long) caller, ret,
+ size, cachep->buffer_size, flags, node);
return ret;
}
@@ -3709,9 +3708,8 @@ static __always_inline void *__do_kmalloc(size_t size, gfp_t flags,
return cachep;
ret = __cache_alloc(cachep, flags, caller);
- kmemtrace_mark_alloc(KMEMTRACE_TYPE_KMALLOC,
- (unsigned long) caller, ret,
- size, cachep->buffer_size, flags);
+ trace_kmalloc((unsigned long) caller, ret,
+ size, cachep->buffer_size, flags);
return ret;
}
@@ -3757,7 +3755,7 @@ void kmem_cache_free(struct kmem_cache *cachep, void *objp)
__cache_free(cachep, objp);
local_irq_restore(flags);
- kmemtrace_mark_free(KMEMTRACE_TYPE_CACHE, _RET_IP_, objp);
+ trace_kmem_cache_free(_RET_IP_, objp);
}
EXPORT_SYMBOL(kmem_cache_free);
@@ -3785,7 +3783,7 @@ void kfree(const void *objp)
__cache_free(c, (void *)objp);
local_irq_restore(flags);
- kmemtrace_mark_free(KMEMTRACE_TYPE_KMALLOC, _RET_IP_, objp);
+ trace_kfree(_RET_IP_, objp);
}
EXPORT_SYMBOL(kfree);
diff --git a/mm/slob.c b/mm/slob.c
index 4dd6516..0000358 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -490,9 +490,8 @@ void *__kmalloc_node(size_t size, gfp_t gfp, int node)
*m = size;
ret = (void *)m + align;
- kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC,
- _RET_IP_, ret,
- size, size + align, gfp, node);
+ trace_kmalloc_node(_RET_IP_, ret,
+ size, size + align, gfp, node);
} else {
unsigned int order = get_order(size);
@@ -503,9 +502,8 @@ void *__kmalloc_node(size_t size, gfp_t gfp, int node)
page->private = size;
}
- kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC,
- _RET_IP_, ret,
- size, PAGE_SIZE << order, gfp, node);
+ trace_kmalloc_node(_RET_IP_, ret,
+ size, PAGE_SIZE << order, gfp, node);
}
return ret;
@@ -527,7 +525,7 @@ void kfree(const void *block)
} else
put_page(&sp->page);
- kmemtrace_mark_free(KMEMTRACE_TYPE_KMALLOC, _RET_IP_, block);
+ trace_kfree(_RET_IP_, block);
}
EXPORT_SYMBOL(kfree);
@@ -599,16 +597,14 @@ void *kmem_cache_alloc_node(struct kmem_cache *c, gfp_t flags, int node)
if (c->size < PAGE_SIZE) {
b = slob_alloc(c->size, flags, c->align, node);
- kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_CACHE,
- _RET_IP_, b, c->size,
- SLOB_UNITS(c->size) * SLOB_UNIT,
- flags, node);
+ trace_kmem_cache_alloc_node(_RET_IP_, b, c->size,
+ SLOB_UNITS(c->size) * SLOB_UNIT,
+ flags, node);
} else {
b = slob_new_pages(flags, get_order(c->size), node);
- kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_CACHE,
- _RET_IP_, b, c->size,
- PAGE_SIZE << get_order(c->size),
- flags, node);
+ trace_kmem_cache_alloc_node(_RET_IP_, b, c->size,
+ PAGE_SIZE << get_order(c->size),
+ flags, node);
}
if (c->ctor)
@@ -646,7 +642,7 @@ void kmem_cache_free(struct kmem_cache *c, void *b)
__kmem_cache_free(b, c->size);
}
- kmemtrace_mark_free(KMEMTRACE_TYPE_CACHE, _RET_IP_, b);
+ trace_kmem_cache_free(_RET_IP_, b);
}
EXPORT_SYMBOL(kmem_cache_free);
diff --git a/mm/slub.c b/mm/slub.c
index 7aaa121..a98078b 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1621,8 +1621,7 @@ void *kmem_cache_alloc(struct kmem_cache *s, gfp_t gfpflags)
{
void *ret = slab_alloc(s, gfpflags, -1, _RET_IP_);
- kmemtrace_mark_alloc(KMEMTRACE_TYPE_CACHE, _RET_IP_, ret,
- s->objsize, s->size, gfpflags);
+ trace_kmem_cache_alloc(_RET_IP_, ret, s->objsize, s->size, gfpflags);
return ret;
}
@@ -1641,8 +1640,8 @@ void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t gfpflags, int node)
{
void *ret = slab_alloc(s, gfpflags, node, _RET_IP_);
- kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_CACHE, _RET_IP_, ret,
- s->objsize, s->size, gfpflags, node);
+ trace_kmem_cache_alloc_node(_RET_IP_, ret,
+ s->objsize, s->size, gfpflags, node);
return ret;
}
@@ -1767,7 +1766,7 @@ void kmem_cache_free(struct kmem_cache *s, void *x)
slab_free(s, page, x, _RET_IP_);
- kmemtrace_mark_free(KMEMTRACE_TYPE_CACHE, _RET_IP_, x);
+ trace_kmem_cache_free(_RET_IP_, x);
}
EXPORT_SYMBOL(kmem_cache_free);
@@ -2702,8 +2701,7 @@ void *__kmalloc(size_t size, gfp_t flags)
ret = slab_alloc(s, flags, -1, _RET_IP_);
- kmemtrace_mark_alloc(KMEMTRACE_TYPE_KMALLOC, _RET_IP_, ret,
- size, s->size, flags);
+ trace_kmalloc(_RET_IP_, ret, size, s->size, flags);
return ret;
}
@@ -2729,10 +2727,9 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node)
if (unlikely(size > SLUB_MAX_SIZE)) {
ret = kmalloc_large_node(size, flags, node);
- kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC,
- _RET_IP_, ret,
- size, PAGE_SIZE << get_order(size),
- flags, node);
+ trace_kmalloc_node(_RET_IP_, ret,
+ size, PAGE_SIZE << get_order(size),
+ flags, node);
return ret;
}
@@ -2744,8 +2741,7 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node)
ret = slab_alloc(s, flags, node, _RET_IP_);
- kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC, _RET_IP_, ret,
- size, s->size, flags, node);
+ trace_kmalloc_node(_RET_IP_, ret, size, s->size, flags, node);
return ret;
}
@@ -2807,7 +2803,7 @@ void kfree(const void *x)
}
slab_free(page->slab, page, object, _RET_IP_);
- kmemtrace_mark_free(KMEMTRACE_TYPE_KMALLOC, _RET_IP_, x);
+ trace_kfree(_RET_IP_, x);
}
EXPORT_SYMBOL(kfree);
@@ -3290,8 +3286,7 @@ void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, unsigned long caller)
ret = slab_alloc(s, gfpflags, -1, caller);
/* Honor the call site pointer we recieved. */
- kmemtrace_mark_alloc(KMEMTRACE_TYPE_KMALLOC, caller, ret, size,
- s->size, gfpflags);
+ trace_kmalloc(caller, ret, size, s->size, gfpflags);
return ret;
}
@@ -3313,8 +3308,7 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags,
ret = slab_alloc(s, gfpflags, node, caller);
/* Honor the call site pointer we recieved. */
- kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC, caller, ret,
- size, s->size, gfpflags, node);
+ trace_kmalloc_node(caller, ret, size, s->size, gfpflags, node);
return ret;
}
diff --git a/mm/util.c b/mm/util.c
index 7c122e4..2599e83 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -4,6 +4,7 @@
#include <linux/module.h>
#include <linux/err.h>
#include <linux/sched.h>
+#include <linux/tracepoint.h>
#include <asm/uaccess.h>
/**
@@ -236,3 +237,18 @@ int __attribute__((weak)) get_user_pages_fast(unsigned long start,
return ret;
}
EXPORT_SYMBOL_GPL(get_user_pages_fast);
+
+/* Tracepoints definitions. */
+DEFINE_TRACE(kmalloc);
+DEFINE_TRACE(kmem_cache_alloc);
+DEFINE_TRACE(kmalloc_node);
+DEFINE_TRACE(kmem_cache_alloc_node);
+DEFINE_TRACE(kfree);
+DEFINE_TRACE(kmem_cache_free);
+
+EXPORT_TRACEPOINT_SYMBOL(kmalloc);
+EXPORT_TRACEPOINT_SYMBOL(kmem_cache_alloc);
+EXPORT_TRACEPOINT_SYMBOL(kmalloc_node);
+EXPORT_TRACEPOINT_SYMBOL(kmem_cache_alloc_node);
+EXPORT_TRACEPOINT_SYMBOL(kfree);
+EXPORT_TRACEPOINT_SYMBOL(kmem_cache_free);
--
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