From: Jeff Layton <jlayton@kernel.org>
Date: Fri, 5 Aug 2022 06:43:48 -0400
Subject: fscache: add tracepoint when failing cookie
Git-commit: 1a1e3aca9d4957e282945cdc2b58e7c560b8e0d2
Patch-mainline: v6.0-rc1
References: jsc#SES-1880
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Luis Henriques <lhenriques@suse.com>
---
fs/fscache/cookie.c | 2 ++
include/trace/events/fscache.h | 2 ++
2 files changed, 4 insertions(+)
diff --git a/fs/fscache/cookie.c b/fs/fscache/cookie.c
index 26a6d395737a..451d8a077e12 100644
--- a/fs/fscache/cookie.c
+++ b/fs/fscache/cookie.c
@@ -263,6 +263,8 @@ void fscache_caching_failed(struct fscache_cookie *cookie)
{
clear_bit(FSCACHE_COOKIE_IS_CACHING, &cookie->flags);
fscache_set_cookie_state(cookie, FSCACHE_COOKIE_STATE_FAILED);
+ trace_fscache_cookie(cookie->debug_id, refcount_read(&cookie->ref),
+ fscache_cookie_failed);
}
EXPORT_SYMBOL(fscache_caching_failed);
diff --git a/include/trace/events/fscache.h b/include/trace/events/fscache.h
index cb3fb337e880..c078c48a8e6d 100644
--- a/include/trace/events/fscache.h
+++ b/include/trace/events/fscache.h
@@ -49,6 +49,7 @@ enum fscache_volume_trace {
enum fscache_cookie_trace {
fscache_cookie_collision,
fscache_cookie_discard,
+ fscache_cookie_failed,
fscache_cookie_get_attach_object,
fscache_cookie_get_end_access,
fscache_cookie_get_hash_collision,
@@ -131,6 +132,7 @@ enum fscache_access_trace {
#define fscache_cookie_traces \
EM(fscache_cookie_collision, "*COLLIDE*") \
EM(fscache_cookie_discard, "DISCARD ") \
+ EM(fscache_cookie_failed, "FAILED ") \
EM(fscache_cookie_get_attach_object, "GET attch") \
EM(fscache_cookie_get_hash_collision, "GET hcoll") \
EM(fscache_cookie_get_end_access, "GQ endac") \