From: Yinghai Lu <yinghai@kernel.org>
To: Ram Pai <linuxram@us.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Tony Luck <tony.luck@intel.com>,
David Miller <davem@davemloft.net>, x86 <x86@kernel.org>,
Dominik Brodowski <linux@dominikbrodowski.net>,
Andrew Morton <akpm@linux-foundation.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arch@vger.kernel.org
Subject: Re: [PATCH -v12 02/15] resources: Add probe_resource()
Date: Wed, 29 Aug 2012 09:02:44 -0700 [thread overview]
Message-ID: <CAE9FiQVtxMWEheQAWkvHZzFRUtyEL914EFZAJjg98p6Jsq3zpw@mail.gmail.com> (raw)
In-Reply-To: <20120829101423.GA18856@ram-ThinkPad-T61>
On Wed, Aug 29, 2012 at 3:14 AM, Ram Pai <linuxram@us.ibm.com> wrote:
> @@ -718,12 +727,12 @@ void insert_resource_expand_to_fit(struct resource *root, struct resource *new)
> */
> int adjust_resource(struct resource *res, resource_size_t start, resource_size_t size)
> {
> - struct resource *tmp, *parent = res->parent;
> + struct resource *tmp, *parent;
> resource_size_t end = start + size - 1;
> int result = -EBUSY;
>
> write_lock(&resource_lock);
> -
> + parent = res->parent;
> if (!parent)
> goto skip;
yes, in the v7 of probe_resource() patch that I sent before,
introduced _adjust_resource solved the problem.
@@ -741,14 +741,13 @@ void insert_resource_expand_to_fit(struc
* arguments. Returns 0 on success, -EBUSY if it can't fit.
* Existing children of the resource are assumed to be immutable.
*/
-int adjust_resource(struct resource *res, resource_size_t start,
resource_size_t size)
+static int __adjust_resource(struct resource *res, resource_size_t start,
+ resource_size_t size)
{
struct resource *tmp, *parent = res->parent;
resource_size_t end = start + size - 1;
int result = -EBUSY;
- write_lock(&resource_lock);
-
if (!parent)
goto skip;
@@ -776,9 +775,19 @@ skip:
result = 0;
out:
- write_unlock(&resource_lock);
return result;
}
+int adjust_resource(struct resource *res, resource_size_t start,
+ resource_size_t size)
+{
+ int ret;
+
+ write_lock(&resource_lock);
+ ret = __adjust_resource(res, start, size);
+ write_unlock(&resource_lock);
+
+ return ret;
+}
EXPORT_SYMBOL(adjust_resource);
static void __init __reserve_region_with_split(struct resource *root,
next prev parent reply other threads:[~2012-08-29 16:02 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-26 18:53 [PATCH -v12 00/15] PCI: allocate pci bus num range for unassigned bridge busn Yinghai Lu
2012-06-26 18:53 ` [PATCH -v12 01/15] resources: Split out __allocate_resource() Yinghai Lu
2012-06-26 19:01 ` Linus Torvalds
2012-06-26 20:33 ` Yinghai Lu
2012-06-26 20:43 ` Linus Torvalds
2012-06-26 18:53 ` [PATCH -v12 02/15] resources: Add probe_resource() Yinghai Lu
2012-06-26 22:07 ` Yinghai Lu
2012-08-28 16:09 ` Yinghai Lu
2012-08-28 17:05 ` Linus Torvalds
2012-08-29 0:10 ` Linus Torvalds
2012-08-29 10:14 ` Ram Pai
2012-08-29 16:02 ` Yinghai Lu [this message]
2012-08-29 15:57 ` Yinghai Lu
2012-08-29 17:36 ` Yinghai Lu
2012-08-31 0:40 ` Bjorn Helgaas
2012-06-26 18:53 ` [PATCH -v12 03/15] resources: Replace registered resource in tree Yinghai Lu
2012-06-26 18:53 ` [PATCH -v12 04/15] PCI: Add pci_bus_extend/shrink_top() Yinghai Lu
2012-06-26 18:53 ` [PATCH -v12 05/15] PCI: Probe safe range that we can use for unassigned bridge Yinghai Lu
2012-06-26 18:54 ` [PATCH -v12 06/15] PCI: Add pci_bus_replace_busn_res() Yinghai Lu
2012-06-26 18:54 ` [PATCH -v12 07/15] PCI: Allocate bus range instead of use max blindly Yinghai Lu
2012-06-26 18:54 ` [PATCH -v12 08/15] PCI: Strict checking of valid range for bridge Yinghai Lu
2012-06-26 18:54 ` [PATCH -v12 09/15] PCI: Kill pci_fixup_parent_subordinate_busnr() Yinghai Lu
2012-06-26 18:54 ` [PATCH -v12 10/15] PCI: Seperate child bus scanning to two passes overall Yinghai Lu
2012-06-26 18:54 ` [PATCH -v12 11/15] pcmcia: Remove workaround for fixing pci parent bus subordinate Yinghai Lu
2012-06-26 18:54 ` [PATCH -v12 12/15] PCI: Double checking setting for bus register and bus struct Yinghai Lu
2012-06-26 18:54 ` [PATCH -v12 13/15] PCI, pciehp: Remove not needed bus number range checking Yinghai Lu
2012-06-26 18:54 ` [PATCH -v12 14/15] PCI: More strict checking of valid range for bridge Yinghai Lu
2012-06-26 18:54 ` [PATCH -v12 15/15] PCI: Don't shrink too much for hotplug bridge Yinghai Lu
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