staging: erofs: support tracepoint

[linux-block.git] / drivers / staging / erofs / data.c

diff --git a/drivers/staging/erofs/data.c b/drivers/staging/erofs/data.c
index 4ddb5c086b44fc4003cb468d70e90e873a1cc863..47d1787e99efa3396fb66bf4ab17c92ec7edbd9f 100644 (file)
--- a/drivers/staging/erofs/data.c
+++ b/drivers/staging/erofs/data.c
@@ -13,6 +13,8 @@
 #include "internal.h"
 #include <linux/prefetch.h>
 
+#include <trace/events/erofs.h>
+
 static inline void read_endio(struct bio *bio)
 {
        int i;
@@ -113,6 +115,7 @@ static int erofs_map_blocks_flatmode(struct inode *inode,
        u64 offset = map->m_la;
        struct erofs_vnode *vi = EROFS_V(inode);
 
+       trace_erofs_map_blocks_flatmode_enter(inode, map, flags);
        BUG_ON(is_inode_layout_compression(inode));
 
        nblocks = DIV_ROUND_UP(inode->i_size, PAGE_SIZE);
@@ -150,8 +153,7 @@ static int erofs_map_blocks_flatmode(struct inode *inode,
 
 out:
        map->m_llen = map->m_plen;
-       debugln("%s, m_la 0x%llx m_pa %llx m_len %llu",
-               __func__, map->m_la, map->m_pa, map->m_plen);
+       trace_erofs_map_blocks_flatmode_exit(inode, map, flags, 0);
        return 0;
 }
 
@@ -305,6 +307,8 @@ static int erofs_raw_access_readpage(struct file *file, struct page *page)
        erofs_off_t last_block;
        struct bio *bio;
 
+       trace_erofs_readpage(page, true);
+
        bio = erofs_read_raw_page(NULL, page->mapping,
                page, &last_block, 1, false);
 
@@ -322,9 +326,12 @@ static int erofs_raw_access_readpages(struct file *filp,
        erofs_off_t last_block;
        struct bio *bio = NULL;
        gfp_t gfp = readahead_gfp_mask(mapping);
+       struct page *page = list_last_entry(pages, struct page, lru);
+
+       trace_erofs_readpages(mapping->host, page, nr_pages, true);
 
        for (; nr_pages; --nr_pages) {
-               struct page *page = list_entry(pages->prev, struct page, lru);
+               page = list_entry(pages->prev, struct page, lru);
 
                prefetchw(&page->flags);
                list_del(&page->lru);