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Date: Wed, 20 Feb 2008 15:47:17 +0200
From: "Ilpo Järvinen" <ilpo.jarvinen@...sinki.fi>
To: netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: David Miller <davem@...emloft.net>,
Arnaldo Carvalho de Melo <acme@...hat.com>,
"Ilpo Järvinen" <ilpo.jarvinen@...sinki.fi>,
Vlad Yasevich <vladislav.yasevich@...com>
Subject: [RFC PATCH 7/8] [SCTP]: uninline sctp_add_cmd_sf
I added inline to sctp_add_cmd and appropriate comment there to
avoid adding another call into the call chain. This works at least
with "gcc (GCC) 4.1.2 20070626 (Red Hat 4.1.2-13)". Alternatively,
__sctp_add_cmd could be introduced to .h.
net/sctp/sm_statefuns.c:
sctp_sf_cookie_wait_prm_abort | -125
sctp_sf_cookie_wait_prm_shutdown | -75
sctp_sf_do_9_1_prm_abort | -75
sctp_sf_shutdown_sent_prm_abort | -50
sctp_sf_pdiscard | -25
sctp_stop_t1_and_abort | -100
sctp_sf_do_9_2_start_shutdown | -154
__sctp_sf_do_9_1_abort | -50
sctp_send_stale_cookie_err | -29
sctp_sf_abort_violation | -181
sctp_sf_do_9_2_shutdown_ack | -154
sctp_sf_do_9_2_reshutack | -86
sctp_sf_tabort_8_4_8 | -28
sctp_sf_heartbeat | -52
sctp_sf_shut_8_4_5 | -27
sctp_eat_data | -246
sctp_sf_shutdown_sent_abort | -58
sctp_sf_check_restart_addrs | -50
sctp_sf_do_unexpected_init | -110
sctp_sf_sendbeat_8_3 | -107
sctp_sf_unk_chunk | -65
sctp_sf_do_prm_asoc | -129
sctp_sf_do_prm_send | -25
sctp_sf_do_9_2_prm_shutdown | -50
sctp_sf_error_closed | -25
sctp_sf_error_shutdown | -25
sctp_sf_shutdown_pending_prm_abort | -25
sctp_sf_do_prm_requestheartbeat | -28
sctp_sf_do_prm_asconf | -75
sctp_sf_do_6_3_3_rtx | -104
sctp_sf_do_6_2_sack | -25
sctp_sf_t1_init_timer_expire | -133
sctp_sf_t1_cookie_timer_expire | -104
sctp_sf_t2_timer_expire | -161
sctp_sf_t4_timer_expire | -175
sctp_sf_t5_timer_expire | -75
sctp_sf_autoclose_timer_expire | -50
sctp_sf_do_5_2_4_dupcook | -579
sctp_sf_do_4_C | -125
sctp_sf_shutdown_pending_abort | -32
sctp_sf_do_5_1E_ca | -186
sctp_sf_backbeat_8_3 | -27
sctp_sf_cookie_echoed_err | -300
sctp_sf_eat_data_6_2 | -146
sctp_sf_eat_data_fast_4_4 | -125
sctp_sf_eat_sack_6_2 | -29
sctp_sf_operr_notify | -25
sctp_sf_do_9_2_final | -152
sctp_sf_do_asconf | -64
sctp_sf_do_asconf_ack | -284
sctp_sf_eat_fwd_tsn_fast | -160
sctp_sf_eat_auth | -86
sctp_sf_do_5_1B_init | -110
sctp_sf_do_5_1C_ack | -204
sctp_sf_do_9_2_shutdown | -78
sctp_sf_do_ecn_cwr | -24
sctp_sf_do_ecne | -32
sctp_sf_eat_fwd_tsn | -135
sctp_sf_do_5_1D_ce | -197
sctp_sf_beat_8_3 | -28
60 functions changed, 6184 bytes removed, diff: -6184
net/sctp/sm_sideeffect.c:
sctp_side_effects | -3873
sctp_do_sm | +3429
2 functions changed, 3429 bytes added, 3873 bytes removed, diff: -444
kernel/uninlined.c:
sctp_add_cmd_sf | +35
1 function changed, 35 bytes added, diff: +35
vmlinux.o:
63 functions changed, 3464 bytes added, 10057 bytes removed, diff: -6593
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>
Cc: Vlad Yasevich <vladislav.yasevich@...com>
---
include/net/sctp/sm.h | 8 ++------
net/sctp/command.c | 12 +++++++++++-
2 files changed, 13 insertions(+), 7 deletions(-)
diff --git a/include/net/sctp/sm.h b/include/net/sctp/sm.h
index ef9e7ed..6740b11 100644
--- a/include/net/sctp/sm.h
+++ b/include/net/sctp/sm.h
@@ -385,13 +385,9 @@ static inline int ADDIP_SERIAL_gte(__u16 s, __u16 t)
return (((s) == (t)) || (((t) - (s)) & ADDIP_SERIAL_SIGN_BIT));
}
-
/* Run sctp_add_cmd() generating a BUG() if there is a failure. */
-static inline void sctp_add_cmd_sf(sctp_cmd_seq_t *seq, sctp_verb_t verb, sctp_arg_t obj)
-{
- if (unlikely(!sctp_add_cmd(seq, verb, obj)))
- BUG();
-}
+extern void sctp_add_cmd_sf(sctp_cmd_seq_t *seq, sctp_verb_t verb,
+ sctp_arg_t obj);
/* Check VTAG of the packet matches the sender's own tag. */
static inline int
diff --git a/net/sctp/command.c b/net/sctp/command.c
index bb97733..187da2d 100644
--- a/net/sctp/command.c
+++ b/net/sctp/command.c
@@ -51,8 +51,11 @@ int sctp_init_cmd_seq(sctp_cmd_seq_t *seq)
/* Add a command to a sctp_cmd_seq_t.
* Return 0 if the command sequence is full.
+ *
+ * Inline here is not a mistake, this way sctp_add_cmd_sf doesn't need extra
+ * calls, size penalty is of insignificant magnitude here
*/
-int sctp_add_cmd(sctp_cmd_seq_t *seq, sctp_verb_t verb, sctp_arg_t obj)
+inline int sctp_add_cmd(sctp_cmd_seq_t *seq, sctp_verb_t verb, sctp_arg_t obj)
{
if (seq->next_free_slot >= SCTP_MAX_NUM_COMMANDS)
goto fail;
@@ -66,6 +69,13 @@ fail:
return 0;
}
+/* Run sctp_add_cmd() generating a BUG() if there is a failure. */
+void sctp_add_cmd_sf(sctp_cmd_seq_t *seq, sctp_verb_t verb, sctp_arg_t obj)
+{
+ if (unlikely(!sctp_add_cmd(seq, verb, obj)))
+ BUG();
+}
+
/* Return the next command structure in a sctp_cmd_seq.
* Returns NULL at the end of the sequence.
*/
--
1.5.2.2
--
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