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| author | Chuck Lever <chuck.lever@oracle.com> | 2022-03-31 21:30:10 +0200 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2022-05-19 18:25:38 +0200 |
| commit | 37324e6bb120bc3cb7cbaa87512ff3a93dbcf5c4 (patch) | |
| tree | 34bacc7faeb7ad7e0eb5e7f960fe76b67c1f0c58 /net/sunrpc/debugfs.c | |
| parent | SUNRPC: Clean up svc_deferred_class trace events (diff) | |
| download | linux-37324e6bb120bc3cb7cbaa87512ff3a93dbcf5c4.tar.xz linux-37324e6bb120bc3cb7cbaa87512ff3a93dbcf5c4.zip | |
SUNRPC: Cache deferral injection
Cache deferral injection stress-tests the cache deferral logic as
well as upper layer protocol deferred request handlers. This
facility is for developers and professional testers to ensure
coverage of the rqst deferral code paths. To date, we haven't
had an adequate way to ensure these code paths are covered
during testing, short of temporary code changes to force their
use.
A file called /sys/kernel/debug/fail_sunrpc/ignore-cache-wait
enables administrators to disable cache deferral injection while
allowing other types of sunrpc errors to be injected. The default
setting is that cache deferral injection is enabled (ignore=false).
To enable support for cache deferral injection,
CONFIG_FAULT_INJECTION, CONFIG_FAULT_INJECTION_DEBUG_FS, and
CONFIG_SUNRPC_DEBUG must all be set to "Y".
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'net/sunrpc/debugfs.c')
| -rw-r--r-- | net/sunrpc/debugfs.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/sunrpc/debugfs.c b/net/sunrpc/debugfs.c index 7dc9cc929bfd..a176d5a0b0ee 100644 --- a/net/sunrpc/debugfs.c +++ b/net/sunrpc/debugfs.c @@ -262,6 +262,9 @@ static void fail_sunrpc_init(void) debugfs_create_bool("ignore-server-disconnect", S_IFREG | 0600, dir, &fail_sunrpc.ignore_server_disconnect); + + debugfs_create_bool("ignore-cache-wait", S_IFREG | 0600, dir, + &fail_sunrpc.ignore_cache_wait); } #else static void fail_sunrpc_init(void) |