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| author | David Howells <dhowells@redhat.com> | 2018-03-27 23:03:00 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2018-03-27 23:03:00 +0100 |
| commit | a25e21f0bcd25673b91b97b9805db33350feec0f (patch) | |
| tree | 0e197c62aa5e22b95b7032d34c9c69969d84316c /fs/afs | |
| parent | 827efed6a66ef8a1c071400b5952fee4a5ffedf9 (diff) | |
| download | linux-a25e21f0bcd25673b91b97b9805db33350feec0f.tar.gz linux-a25e21f0bcd25673b91b97b9805db33350feec0f.tar.xz | |
rxrpc, afs: Use debug_ids rather than pointers in traces
In rxrpc and afs, use the debug_ids that are monotonically allocated to
various objects as they're allocated rather than pointers as kernel
pointers are now hashed making them less useful. Further, the debug ids
aren't reused anywhere nearly as quickly.
In addition, allow kernel services that use rxrpc, such as afs, to take
numbers from the rxrpc counter, assign them to their own call struct and
pass them in to rxrpc for both client and service calls so that the trace
lines for each will have the same ID tag.
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'fs/afs')
| -rw-r--r-- | fs/afs/internal.h | 1 | ||||
| -rw-r--r-- | fs/afs/rxrpc.c | 12 |
2 files changed, 9 insertions, 4 deletions
diff --git a/fs/afs/internal.h b/fs/afs/internal.h index f38d6a561a84..72217170b155 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -118,6 +118,7 @@ struct afs_call { bool ret_reply0; /* T if should return reply[0] on success */ bool upgrade; /* T to request service upgrade */ u16 service_id; /* Actual service ID (after upgrade) */ + unsigned int debug_id; /* Trace ID */ u32 operation_ID; /* operation ID for an incoming call */ u32 count; /* count for use in unmarshalling */ __be32 tmp; /* place to extract temporary data */ diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c index e1126659f043..b819900916e6 100644 --- a/fs/afs/rxrpc.c +++ b/fs/afs/rxrpc.c @@ -131,6 +131,7 @@ static struct afs_call *afs_alloc_call(struct afs_net *net, call->type = type; call->net = net; + call->debug_id = atomic_inc_return(&rxrpc_debug_id); atomic_set(&call->usage, 1); INIT_WORK(&call->async_work, afs_process_async_call); init_waitqueue_head(&call->waitq); @@ -169,11 +170,12 @@ void afs_put_call(struct afs_call *call) afs_put_server(call->net, call->cm_server); afs_put_cb_interest(call->net, call->cbi); kfree(call->request); - kfree(call); - o = atomic_dec_return(&net->nr_outstanding_calls); trace_afs_call(call, afs_call_trace_free, 0, o, __builtin_return_address(0)); + kfree(call); + + o = atomic_dec_return(&net->nr_outstanding_calls); if (o == 0) wake_up_atomic_t(&net->nr_outstanding_calls); } @@ -378,7 +380,8 @@ long afs_make_call(struct afs_addr_cursor *ac, struct afs_call *call, (async ? afs_wake_up_async_call : afs_wake_up_call_waiter), - call->upgrade); + call->upgrade, + call->debug_id); if (IS_ERR(rxcall)) { ret = PTR_ERR(rxcall); goto error_kill_call; @@ -727,7 +730,8 @@ void afs_charge_preallocation(struct work_struct *work) afs_wake_up_async_call, afs_rx_attach, (unsigned long)call, - GFP_KERNEL) < 0) + GFP_KERNEL, + call->debug_id) < 0) break; call = NULL; } |