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kernel ipc debug: various fixes

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. add receive hooks in the kernel to print asynchronously
	  delivered messages
	. do not rely on MF_REPLY_PEND to decide between calls and errors,
	  as that isn't reliable for asynchronous messages; try both instead
	. add _sendcall() that extract-mfield.sh can then reliably recognize
	  the fields for messages that are sent with just send()
	. add DEBUG_DUMPIPC_NAMES to restrict printed messages to
	  from/to given process names

Change-Id: Ia65eb02a69a2b58e73bf9f009987be06dda774a3
This commit is contained in:
Ben Gras
2013-05-01 19:02:06 +00:00
parent 85fd078707
commit 80846c4a79
10 changed files with 112 additions and 38 deletions
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6
kernel/proc.c
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@@ -1223,6 +1223,9 @@ int try_deliver_senda(struct proc *caller_ptr,
dst_ptr->p_misc_flags |= MF_DELIVERMSG;
IPC_STATUS_ADD_CALL(dst_ptr, SENDA);
RTS_UNSET(dst_ptr, RTS_RECEIVING);
#if DEBUG_IPC_HOOK
hook_ipc_msgrecv(&dst_ptr->p_delivermsg, caller_ptr, dst_ptr);
#endif
} else if (r == OK) {
/* Inform receiver that something is pending */
set_sys_bit(priv(dst_ptr)->s_asyn_pending,
@@ -1398,6 +1401,9 @@ static int try_one(struct proc *src_ptr, struct proc *dst_ptr)
dst_ptr->p_delivermsg = tabent.msg;
dst_ptr->p_delivermsg.m_source = src_ptr->p_endpoint;
dst_ptr->p_misc_flags |= MF_DELIVERMSG;
#if DEBUG_IPC_HOOK
hook_ipc_msgrecv(&dst_ptr->p_delivermsg, src_ptr, dst_ptr);
#endif
store_result:
/* Store results for sender */