Module Name: src
Committed By: riastradh
Date: Mon Aug 27 15:06:54 UTC 2018
Modified Files:
src/sys/external/bsd/drm2/linux: linux_idr.c
Log Message:
sdt dtrace probes for linux idr.
To generate a diff of this commit:
cvs rdiff -u -r1.9 -r1.10 src/sys/external/bsd/drm2/linux/linux_idr.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/external/bsd/drm2/linux/linux_idr.c
diff -u src/sys/external/bsd/drm2/linux/linux_idr.c:1.9 src/sys/external/bsd/drm2/linux/linux_idr.c:1.10
--- src/sys/external/bsd/drm2/linux/linux_idr.c:1.9 Mon Aug 27 14:15:45 2018
+++ src/sys/external/bsd/drm2/linux/linux_idr.c Mon Aug 27 15:06:54 2018
@@ -1,4 +1,4 @@
-/* $NetBSD: linux_idr.c,v 1.9 2018/08/27 14:15:45 riastradh Exp $ */
+/* $NetBSD: linux_idr.c,v 1.10 2018/08/27 15:06:54 riastradh Exp $ */
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -30,11 +30,12 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: linux_idr.c,v 1.9 2018/08/27 14:15:45 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: linux_idr.c,v 1.10 2018/08/27 15:06:54 riastradh Exp $");
#include <sys/param.h>
#include <sys/atomic.h>
#include <sys/rbtree.h>
+#include <sys/sdt.h>
#include <linux/err.h>
#include <linux/idr.h>
@@ -59,6 +60,18 @@ struct idr_cache {
void *ic_where;
};
+SDT_PROBE_DEFINE0(sdt, linux, idr, leak);
+SDT_PROBE_DEFINE1(sdt, linux, idr, init, "struct idr *"/*idr*/);
+SDT_PROBE_DEFINE1(sdt, linux, idr, destroy, "struct idr *"/*idr*/);
+SDT_PROBE_DEFINE4(sdt, linux, idr, replace,
+ "struct idr *"/*idr*/, "int"/*id*/, "void *"/*odata*/, "void *"/*ndata*/);
+SDT_PROBE_DEFINE3(sdt, linux, idr, remove,
+ "struct idr *"/*idr*/, "int"/*id*/, "void *"/*data*/);
+SDT_PROBE_DEFINE0(sdt, linux, idr, preload);
+SDT_PROBE_DEFINE0(sdt, linux, idr, preload_end);
+SDT_PROBE_DEFINE3(sdt, linux, idr, alloc,
+ "struct idr *"/*idr*/, "int"/*id*/, "void *"/*data*/);
+
static specificdata_key_t idr_cache_key __read_mostly;
static void
@@ -92,6 +105,7 @@ idr_cache_dtor(void *cookie)
struct idr_cache *cache = cookie;
if (cache->ic_node) {
+ SDT_PROBE0(sdt, linux, idr, leak);
idr_cache_warning(cache);
kmem_free(cache->ic_node, sizeof(*cache->ic_node));
}
@@ -161,12 +175,14 @@ idr_init(struct idr *idr)
mutex_init(&idr->idr_lock, MUTEX_DEFAULT, IPL_VM);
rb_tree_init(&idr->idr_tree, &idr_rb_ops);
+ SDT_PROBE1(sdt, linux, idr, init, idr);
}
void
idr_destroy(struct idr *idr)
{
+ SDT_PROBE1(sdt, linux, idr, destroy, idr);
#if 0 /* XXX No rb_tree_destroy? */
rb_tree_destroy(&idr->idr_tree);
#endif
@@ -226,6 +242,8 @@ idr_replace(struct idr *idr, void *repla
} else {
result = node->in_data;
node->in_data = replacement;
+ SDT_PROBE4(sdt, linux, idr, replace,
+ idr, id, result, replacement);
}
mutex_spin_exit(&idr->idr_lock);
@@ -240,6 +258,7 @@ idr_remove(struct idr *idr, int id)
mutex_spin_enter(&idr->idr_lock);
node = rb_tree_find_node(&idr->idr_tree, &id);
KASSERTMSG((node != NULL), "idr %p has no entry for id %d", idr, id);
+ SDT_PROBE3(sdt, linux, idr, remove, idr, id, node->in_data);
rb_tree_remove_node(&idr->idr_tree, node);
mutex_spin_exit(&idr->idr_lock);
@@ -253,6 +272,8 @@ idr_preload(gfp_t gfp)
struct idr_node *node;
km_flag_t kmflag = ISSET(gfp, __GFP_WAIT) ? KM_SLEEP : KM_NOSLEEP;
+ SDT_PROBE0(sdt, linux, idr, preload);
+
/* If caller asked to wait, we had better be sleepable. */
if (ISSET(gfp, __GFP_WAIT))
ASSERT_SLEEPABLE();
@@ -342,6 +363,8 @@ out: mutex_spin_exit(&idr->idr_lock);
/* Discard the node on failure. */
if (id < 0)
cache->ic_node = node;
+ else
+ SDT_PROBE3(sdt, linux, idr, alloc, idr, id, data);
return id;
}
@@ -350,6 +373,8 @@ idr_preload_end(void)
{
struct idr_cache *cache;
+ SDT_PROBE0(sdt, linux, idr, preload_end);
+
/* Get the cache, or bail if it's not there. */
cache = lwp_getspecific(idr_cache_key);
if (cache == NULL)
