From: Chen Gong <gongchen4@xxxxxxxxxx>
This patch adds trace points for reading zipped data.
Signed-off-by: Chen Gong <gongchen4@xxxxxxxxxx>
Reviewed-by: Chao Yu <yuchao0@xxxxxxxxxx>
Reviewed-by: Gao Xiang <gaoxiang25@xxxxxxxxxx>
Signed-off-by: Gao Xiang <gaoxiang25@xxxxxxxxxx>
---
drivers/staging/erofs/include/trace/events/erofs.h | 20 ++++++++++++++++++--
drivers/staging/erofs/unzip_vle.c | 11 +++++++++++
2 files changed, 29 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/erofs/include/trace/events/erofs.h b/drivers/staging/erofs/include/trace/events/erofs.h
index 5aead93..660c92f 100644
--- a/drivers/staging/erofs/include/trace/events/erofs.h
+++ b/drivers/staging/erofs/include/trace/events/erofs.h
@@ -162,7 +162,8 @@
TP_printk("dev = (%d,%d), nid = %llu, la %llu llen %llu flags %s",
show_dev_nid(__entry),
- __entry->la, __entry->llen, show_map_flags(__entry->flags))
+ __entry->la, __entry->llen,
+ __entry->flags ? show_map_flags(__entry->flags) : "NULL")
);
DEFINE_EVENT(erofs__map_blocks_enter, erofs_map_blocks_flatmode_enter,
@@ -172,6 +173,13 @@
TP_ARGS(inode, map, flags)
);
+DEFINE_EVENT(erofs__map_blocks_enter, z_erofs_map_blocks_iter_enter,
+ TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
+ unsigned int flags),
+
+ TP_ARGS(inode, map, flags)
+);
+
DECLARE_EVENT_CLASS(erofs__map_blocks_exit,
TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
unsigned int flags, int ret),
@@ -204,7 +212,8 @@
TP_printk("dev = (%d,%d), nid = %llu, flags %s "
"la %llu pa %llu llen %llu plen %llu mflags %s ret %d",
- show_dev_nid(__entry), show_map_flags(__entry->flags),
+ show_dev_nid(__entry),
+ __entry->flags ? show_map_flags(__entry->flags) : "NULL",
__entry->la, __entry->pa, __entry->llen, __entry->plen,
show_mflags(__entry->mflags), __entry->ret)
);
@@ -216,6 +225,13 @@
TP_ARGS(inode, map, flags, ret)
);
+DEFINE_EVENT(erofs__map_blocks_exit, z_erofs_map_blocks_iter_exit,
+ TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
+ unsigned int flags, int ret),
+
+ TP_ARGS(inode, map, flags, ret)
+);
+
TRACE_EVENT(erofs_destroy_inode,
TP_PROTO(struct inode *inode),
diff --git a/drivers/staging/erofs/unzip_vle.c b/drivers/staging/erofs/unzip_vle.c
index 15c2015..ad3b7bb 100644
--- a/drivers/staging/erofs/unzip_vle.c
+++ b/drivers/staging/erofs/unzip_vle.c
@@ -13,6 +13,8 @@
#include "unzip_vle.h"
#include <linux/prefetch.h>
+#include <trace/events/erofs.h>
+
static struct workqueue_struct *z_erofs_workqueue __read_mostly;
static struct kmem_cache *z_erofs_workgroup_cachep __read_mostly;
@@ -613,6 +615,8 @@ static int z_erofs_do_read_page(struct z_erofs_vle_frontend *fe,
unsigned int cur, end, spiltted, index;
int err = 0;
+ trace_erofs_readpage(page, false);
+
/* register locked file pages as online pages in pack */
z_erofs_onlinepage_init(page);
@@ -1348,6 +1352,9 @@ static inline int __z_erofs_vle_normalaccess_readpages(
struct page *head = NULL;
LIST_HEAD(pagepool);
+ trace_erofs_readpages(mapping->host, lru_to_page(pages),
+ nr_pages, false);
+
#if (EROFS_FS_ZIP_CACHE_LVL >= 2)
f.cachedzone_la = (erofs_off_t)lru_to_page(pages)->index << PAGE_SHIFT;
#endif
@@ -1570,6 +1577,8 @@ int z_erofs_map_blocks_iter(struct inode *inode,
unsigned int cluster_type, logical_cluster_ofs;
int err = 0;
+ trace_z_erofs_map_blocks_iter_enter(inode, map, flags);
+
/* when trying to read beyond EOF, leave it unmapped */
if (unlikely(map->m_la >= inode->i_size)) {
DBG_BUGON(!initial);
@@ -1688,6 +1697,8 @@ int z_erofs_map_blocks_iter(struct inode *inode,
__func__, map->m_la, map->m_pa,
map->m_llen, map->m_plen, map->m_flags);
+ trace_z_erofs_map_blocks_iter_exit(inode, map, flags, err);
+
/* aggressively BUG_ON iff CONFIG_EROFS_FS_DEBUG is on */
DBG_BUGON(err < 0 && err != -ENOMEM);
return err;
--
1.9.1
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