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Thread: Re: Support vector domain on ia64




Re: Support vector domain on ia64
user name
2007-07-18 01:47:34
Hi Tony,

Luck, Tony wrote:
> Getting close now.  New (I think it's new, I didn't
notice it last time, but I may have
> missed it in the other build noise)  concern while
compiling this version was the warning:
>
>   arch/ia64/kernel/iosapic.c:597: warning:
'iosapic_free_rte' defined but not used
>
> This isn't spurious, the only call to
iosapic_free_rte() has been removed, but there
> is still a call to iosapic_alloc_rte() ... which means
we must have a memory leak.

I did it on purpose (and gave the warning a miss...) and I
consider
iosapic_free_rte() is no longer needed.

I decided to remain iosapic_rte_info to keep gsi-to-irq
binding
after device disable. Indeed it needs some extra memory, but
it
is only "sizeof(iosapic_rte_info) * <the number of
removed devices>"
bytes and has no memory leak becasue re-enabled devices use
the
iosapic_rte_info which they used before disabling.

Here is a iosapic_free_rte() removal patch which remove the
warning
message and can be applied after 12/12.

Thanks,
Yasuaki Ishimatsu



Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuakijp.fujitsu.com>

 arch/ia64/kernel/iosapic.c |    8 --------
 1 files changed, 8 deletions(-)

Index: linux-2.6.22/arch/ia64/kernel/iosapic.c
============================================================
=======
--- linux-2.6.22.orig/arch/ia64/kernel/iosapic.c	2007-07-17
12:09:47.000000000 +0900
+++ linux-2.6.22/arch/ia64/kernel/iosapic.c	2007-07-18
11:59:33.000000000 +0900
 -593,14
+593,6  static struct iosapic_rte_info *iosapic_
 	return rte;
 }

-static void iosapic_free_rte (struct iosapic_rte_info
*rte)
-{
-	if (rte->flags & RTE_PREALLOCATED)
-		list_add_tail(&rte->rte_list,
&free_rte_list);
-	else
-		kfree(rte);
-}
-
 static inline int irq_is_shared (int irq)
 {
 	return (iosapic_intr_info[irq].count > 1);

-
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