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| author | David Howells <dhowells@redhat.com> | 2020-02-10 13:00:22 +0300 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2021-08-27 15:24:46 +0300 |
| commit | 2908f5e101e3fb1d478cff1c556966e1af816641 (patch) | |
| tree | 3bfc51416024a1b1f2043872a00d6a36d45625b3 /include/linux/fscache.h | |
| parent | 185981958c920dd28e35cba7cda69486c8551781 (diff) | |
| download | linux-2908f5e101e3fb1d478cff1c556966e1af816641.tar.xz | |
fscache: Add a cookie debug ID and use that in traces
Add a cookie debug ID and use that in traces and in procfiles rather than
displaying the (hashed) pointer to the cookie. This is easier to correlate
and we don't lose anything when interpreting oops output since that shows
unhashed addresses and registers that aren't comparable to the hashed
values.
Changes:
ver #2:
- Fix the fscache_op tracepoint to handle a NULL cookie pointer.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
cc: linux-cachefs@redhat.com
Link: https://lore.kernel.org/r/158861210988.340223.11688464116498247790.stgit@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/159465769844.1376105.14119502774019865432.stgit@warthog.procyon.org.uk/
Link: https://lore.kernel.org/r/160588459097.3465195.1273313637721852165.stgit@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/162431193544.2908479.17556704572948300790.stgit@warthog.procyon.org.uk/
Diffstat (limited to 'include/linux/fscache.h')
| -rw-r--r-- | include/linux/fscache.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/fscache.h b/include/linux/fscache.h index abc1c4737fb8..ba58c427cf9a 100644 --- a/include/linux/fscache.h +++ b/include/linux/fscache.h @@ -126,6 +126,7 @@ struct fscache_cookie { atomic_t usage; /* number of users of this cookie */ atomic_t n_children; /* number of children of this cookie */ atomic_t n_active; /* number of active users of netfs ptrs */ + unsigned int debug_id; spinlock_t lock; spinlock_t stores_lock; /* lock on page store tree */ struct hlist_head backing_objects; /* object(s) backing this file/index */ |