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registration error (rc -22) on a standard function. Why ?
- From: Breno Leitao <leitao at linux dot vnet dot ibm dot com>
- To: systemtap at sources dot redhat dot com
- Date: Wed, 03 Dec 2008 22:55:30 -0200
- Subject: registration error (rc -22) on a standard function. Why ?
Hi,
I am trying to probe a function which was static and inline. To probe
it, I remove the static and inline modifier, to turn into a standard
function, but now I am getting the following error:
WARNING: probe module("bonding").function("_lock_tx_hashtbl@drivers/net/bonding/bond_alb.c:132") registration error (rc -22)
Here is the function:
void _lock_tx_hashtbl(struct bonding *bond)
{
spin_lock_bh(&(BOND_ALB_INFO(bond).tx_hashtbl_lock));
}
stap -p2 shows:
module("bonding").function("_lock_tx_hashtbl@drivers/net/bonding/bond_alb.c:132") /* pc=.text+0x9b00 */ /* <- module("bonding").function("_lock_tx_hashtbl") */
Objdump shows:
0000000000009b00 <._lock_tx_hashtbl>:
9b00: 7c 08 02 a6 mflr r0
9b04: 38 63 01 f0 addi r3,r3,496
9b08: f8 01 00 10 std r0,16(r1)
9b0c: f8 21 ff 91 stdu r1,-112(r1)
9b10: 48 00 00 01 bl 9b10 <._lock_tx_hashtbl+0x10>
9b10: R_PPC64_REL24 ._spin_lock_bh
9b14: 60 00 00 00 nop
9b18: 38 21 00 70 addi r1,r1,112
9b1c: e8 01 00 10 ld r0,16(r1)
9b20: 7c 08 03 a6 mtlr r0
9b24: 4e 80 00 20 blr
I really didn't understand why I can't probe that function. Any idea
what might be wrong ?
Thanks
Breno