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authorJeffle Xu <jefflexu@linux.alibaba.com>2022-04-25 14:21:29 +0200
committerGao Xiang <hsiangkao@linux.alibaba.com>2022-05-17 18:11:18 +0200
commit1519670e4fecc6063fa2f0c10f0666d3331f219b (patch)
tree3e4f9b763b2e473ffe8f93064b3f5e8581ad007b /fs/cachefiles
parentcachefiles: enable on-demand read mode (diff)
downloadlinux-1519670e4fecc6063fa2f0c10f0666d3331f219b.tar.xz
linux-1519670e4fecc6063fa2f0c10f0666d3331f219b.zip
cachefiles: add tracepoints for on-demand read mode
Add tracepoints for on-demand read mode. Currently following tracepoints are added: OPEN request / COPEN reply CLOSE request READ request / CREAD reply write through anonymous fd release of anonymous fd Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com> Acked-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20220425122143.56815-8-jefflexu@linux.alibaba.com Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Diffstat (limited to 'fs/cachefiles')
-rw-r--r--fs/cachefiles/ondemand.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/cachefiles/ondemand.c b/fs/cachefiles/ondemand.c
index 3470d4e8f0cb..a41ae6efc545 100644
--- a/fs/cachefiles/ondemand.c
+++ b/fs/cachefiles/ondemand.c
@@ -30,6 +30,7 @@ static int cachefiles_ondemand_fd_release(struct inode *inode,
xa_unlock(&cache->reqs);
xa_erase(&cache->ondemand_ids, object_id);
+ trace_cachefiles_ondemand_fd_release(object, object_id);
cachefiles_put_object(object, cachefiles_obj_put_ondemand_fd);
cachefiles_put_unbind_pincount(cache);
return 0;
@@ -55,6 +56,7 @@ static ssize_t cachefiles_ondemand_fd_write_iter(struct kiocb *kiocb,
if (ret < 0)
return ret;
+ trace_cachefiles_ondemand_fd_write(object, file_inode(file), pos, len);
ret = __cachefiles_write(object, file, pos, iter, NULL, NULL);
if (!ret)
ret = len;
@@ -93,6 +95,7 @@ static long cachefiles_ondemand_fd_ioctl(struct file *filp, unsigned int ioctl,
if (!req)
return -EINVAL;
+ trace_cachefiles_ondemand_cread(object, id);
complete(&req->done);
return 0;
}
@@ -166,6 +169,7 @@ int cachefiles_ondemand_copen(struct cachefiles_cache *cache, char *args)
clear_bit(FSCACHE_COOKIE_NO_DATA_TO_READ, &cookie->flags);
else
set_bit(FSCACHE_COOKIE_NO_DATA_TO_READ, &cookie->flags);
+ trace_cachefiles_ondemand_copen(req->object, id, size);
out:
complete(&req->done);
@@ -213,6 +217,7 @@ static int cachefiles_ondemand_get_fd(struct cachefiles_req *req)
object->ondemand_id = object_id;
cachefiles_get_unbind_pincount(cache);
+ trace_cachefiles_ondemand_open(object, &req->msg, load);
return 0;
err_put_fd:
@@ -426,6 +431,7 @@ static int cachefiles_ondemand_init_close_req(struct cachefiles_req *req,
return -ENOENT;
req->msg.object_id = object_id;
+ trace_cachefiles_ondemand_close(object, &req->msg);
return 0;
}
@@ -452,6 +458,7 @@ static int cachefiles_ondemand_init_read_req(struct cachefiles_req *req,
req->msg.object_id = object_id;
load->off = read_ctx->off;
load->len = read_ctx->len;
+ trace_cachefiles_ondemand_read(object, &req->msg, load);
return 0;
}