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| author | Karsten Graul <kgraul@linux.ibm.com> | 2020-04-29 17:10:46 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-04-29 12:26:32 -0700 |
| commit | 6c8968c421e0e6bea8a78ee4fdd043d850cd5b26 (patch) | |
| tree | 31c3e1135d7b6891fea1ef365c989d1126d88e63 /net/smc/smc_core.h | |
| parent | 2140ac26f8f501d3cc8f1575e6419f1a50779496 (diff) | |
| download | linux-6c8968c421e0e6bea8a78ee4fdd043d850cd5b26.tar.gz linux-6c8968c421e0e6bea8a78ee4fdd043d850cd5b26.tar.bz2 linux-6c8968c421e0e6bea8a78ee4fdd043d850cd5b26.zip | |
net/smc: use worker to process incoming llc messages
Incoming llc messages are processed in irq tasklet context, and
a worker is used to send outgoing messages. The worker is needed
because getting a send buffer could result in a wait for a free buffer.
To make sure all incoming llc messages are processed in a serialized way
introduce an event queue and create a new queue entry for each message
which is queued to this event queue. A new worker processes the event
queue entries in order.
And remove the use of a separate worker to send outgoing llc messages
because the messages are processed in worker context already.
With this event queue the serialized llc_wq work queue is obsolete,
remove it.
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Reviewed-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc_core.h')
| -rw-r--r-- | net/smc/smc_core.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/net/smc/smc_core.h b/net/smc/smc_core.h index 2b1960c8c8ce..6548e9a06f73 100644 --- a/net/smc/smc_core.h +++ b/net/smc/smc_core.h @@ -120,7 +120,6 @@ struct smc_link { struct smc_link_group *lgr; /* parent link group */ enum smc_link_state state; /* state of link */ - struct workqueue_struct *llc_wq; /* single thread work queue */ struct completion llc_confirm; /* wait for rx of conf link */ struct completion llc_confirm_resp; /* wait 4 rx of cnf lnk rsp */ int llc_confirm_rc; /* rc from confirm link msg */ @@ -233,6 +232,12 @@ struct smc_link_group { DECLARE_BITMAP(rtokens_used_mask, SMC_RMBS_PER_LGR_MAX); /* used rtoken elements */ u8 next_link_id; + struct list_head llc_event_q; + /* queue for llc events */ + spinlock_t llc_event_q_lock; + /* protects llc_event_q */ + struct work_struct llc_event_work; + /* llc event worker */ }; struct { /* SMC-D */ u64 peer_gid; |