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Message-Id: <1443678807-786-46-git-send-email-yinghai@kernel.org>
Date: Wed, 30 Sep 2015 22:53:19 -0700
From: Yinghai Lu <yinghai@...nel.org>
To: Bjorn Helgaas <bhelgaas@...gle.com>,
David Miller <davem@...emloft.net>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Wei Yang <weiyang@...ux.vnet.ibm.com>, TJ <linux@....tj>,
Yijing Wang <wangyijing@...wei.com>
Cc: linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH v6 45/53] PCI: Add debug print out for min_align and alt_size
Put all print out for all children align/size and result align/size
together.
We can print out device name at same time with min_align/alt_size
calculation.
So we can shut off debug print out from get_res_add_size() and
get_res_add_align().
Signed-off-by: Yinghai Lu <yinghai@...nel.org>
---
drivers/pci/setup-bus.c | 76 ++++++++++++++++++++++++++++++++++++-------------
1 file changed, 56 insertions(+), 20 deletions(-)
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 40a76d6..173c83f 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -159,11 +159,6 @@ static resource_size_t get_res_add_size(struct list_head *head,
if (!dev_res || !dev_res->add_size)
return 0;
- dev_printk(KERN_DEBUG, &dev_res->dev->dev,
- "BAR %d: %pR get_res_add_size add_size %#llx\n",
- (int)(res - &dev_res->dev->resource[0]),
- res, (unsigned long long)dev_res->add_size);
-
return dev_res->add_size;
}
@@ -176,11 +171,6 @@ static resource_size_t get_res_add_align(struct list_head *head,
if (!dev_res || !dev_res->min_align)
return 0;
- dev_printk(KERN_DEBUG, &dev_res->dev->dev,
- "BAR %d: %pR get_res_add_align min_align %#llx\n",
- (int)(res - &dev_res->dev->resource[0]),
- res, (unsigned long long)dev_res->min_align);
-
return dev_res->min_align;
}
@@ -1233,6 +1223,8 @@ struct align_test_res {
struct resource res;
resource_size_t size;
resource_size_t align;
+ struct device *dev;
+ int idx;
};
static void free_align_test_list(struct list_head *head)
@@ -1246,7 +1238,8 @@ static void free_align_test_list(struct list_head *head)
}
static int add_to_align_test_list(struct list_head *head,
- resource_size_t align, resource_size_t size)
+ resource_size_t align, resource_size_t size,
+ struct device *dev, int idx)
{
struct align_test_res *tmp;
@@ -1256,6 +1249,8 @@ static int add_to_align_test_list(struct list_head *head,
tmp->align = align;
tmp->size = size;
+ tmp->dev = dev;
+ tmp->idx = idx;
list_add_tail(&tmp->list, head);
@@ -1321,6 +1316,19 @@ static resource_size_t calculate_mem_align(struct list_head *head,
resource_size_t min_align, good_align, aligned_size, start;
int count = 0;
+ list_for_each_entry(p, head, list)
+ count++;
+
+ printk(KERN_DEBUG " ===========BEGIN===calculate_mem_align========\n");
+ if (count) {
+ printk(KERN_DEBUG " align/size:\n");
+ list_for_each_entry(p, head, list)
+ dev_printk(KERN_DEBUG, p->dev,
+ "BAR %d: %08llx/%08llx\n", p->idx,
+ (unsigned long long)p->align,
+ (unsigned long long)p->size);
+ }
+
if (max_align <= align_low) {
good_align = align_low;
goto out;
@@ -1328,9 +1336,6 @@ static resource_size_t calculate_mem_align(struct list_head *head,
good_align = max_align;
- list_for_each_entry(p, head, list)
- count++;
-
if (count <= 1)
goto out;
@@ -1355,6 +1360,11 @@ static resource_size_t calculate_mem_align(struct list_head *head,
} while (min_align > align_low);
out:
+ printk(KERN_DEBUG " min_align/aligned_size: %08llx/%08llx\n",
+ (unsigned long long)good_align,
+ (unsigned long long)ALIGN(size, good_align));
+ printk(KERN_DEBUG " ===========END===calculate_mem_align==========\n");
+
return good_align;
}
@@ -1372,6 +1382,16 @@ static resource_size_t calculate_mem_alt_size(struct list_head *head,
list_for_each_entry(p, head, list)
count++;
+ printk(KERN_DEBUG " ===========BEGIN===calculate_mem_alt_size=====\n");
+ if (count) {
+ printk(KERN_DEBUG " align/size:\n");
+ list_for_each_entry(p, head, list)
+ dev_printk(KERN_DEBUG, p->dev,
+ "BAR %d: %08llx/%08llx\n", p->idx,
+ (unsigned long long)p->align,
+ (unsigned long long)p->size);
+ }
+
if (count <= 1)
goto out;
@@ -1396,6 +1416,11 @@ static resource_size_t calculate_mem_alt_size(struct list_head *head,
}
out:
+ printk(KERN_DEBUG " alt_align/alt_size: %08llx/%08llx\n",
+ (unsigned long long)max_align,
+ (unsigned long long)good_size);
+ printk(KERN_DEBUG " ===========END===calculate_mem_alt_size=======\n");
+
return good_size;
}
@@ -1476,7 +1501,7 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
/* put SRIOV/ROM res to realloc list */
if (realloc_head && is_optional(i)) {
add_to_align_test_list(&align_test_add_list,
- align, r_size);
+ align, r_size, &dev->dev, i);
r->end = r->start - 1;
__add_to_list(realloc_head, dev, r,
r_size, align, 0, 0);
@@ -1495,7 +1520,7 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
if (r_size > 1) {
add_to_align_test_list(&align_test_list,
- align, r_size);
+ align, r_size, &dev->dev, i);
size += r_size;
if (align > max_align)
max_align = align;
@@ -1512,7 +1537,8 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
add_align = align;
add_to_align_test_list(&align_test_add_list,
add_align,
- r_size + add_r_size);
+ r_size + add_r_size,
+ &dev->dev, i);
sum_add_size += r_size + add_r_size;
if (add_align > max_add_align)
max_add_align = add_align;
@@ -1522,14 +1548,14 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
add_to_align_test_list(
&align_test_alt_list,
dev_res->alt_align,
- dev_res->alt_size);
+ dev_res->alt_size, &dev->dev, i);
alt_size += dev_res->alt_size;
if (alt_align < dev_res->alt_align)
alt_align = dev_res->alt_align;
} else if (r_size > 1) {
add_to_align_test_list(
&align_test_alt_list,
- align, r_size);
+ align, r_size, &dev->dev, i);
alt_size += r_size;
if (alt_align < align)
alt_align = align;
@@ -1540,6 +1566,9 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
max_align = max(max_align, window_align);
if (size || min_size) {
+ dev_printk(KERN_DEBUG, &bus->self->dev,
+ "BAR %d: bridge window %pR to %pR calculate_mem for MUST\n",
+ (int)(b_res - &bus->self->resource[0]), b_res, &bus->busn_res);
min_align = calculate_mem_align(&align_test_list, max_align,
size, window_align);
size0 = calculate_size(size, min_size,
@@ -1549,6 +1578,9 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
if (size0 && realloc_head) {
alt_align = max(alt_align, window_align);
+ dev_printk(KERN_DEBUG, &bus->self->dev,
+ "BAR %d: bridge window %pR to %pR calculate_mem for ALT\n",
+ (int)(b_res - &bus->self->resource[0]), b_res, &bus->busn_res);
/* need to increase size to fit more alt */
alt_size = calculate_mem_alt_size(&align_test_alt_list,
alt_align, alt_size,
@@ -1564,6 +1596,9 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
if (sum_add_size < min_sum_size)
sum_add_size = min_sum_size;
if (sum_add_size > size && realloc_head) {
+ dev_printk(KERN_DEBUG, &bus->self->dev,
+ "BAR %d: bridge window %pR to %pR calculate_mem for ADD\n",
+ (int)(b_res - &bus->self->resource[0]), b_res, &bus->busn_res);
min_add_align = calculate_mem_align(&align_test_add_list,
max_add_align, sum_add_size,
window_align);
@@ -1621,7 +1656,8 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
final_add_size, min_add_align,
alt_size, alt_align);
dev_printk(KERN_DEBUG, &bus->self->dev,
- "bridge window %pR to %pR add_size %llx add_align %llx alt_size %llx alt_align %llx req_size %llx req_align %llx\n",
+ "BAR %d: bridge window %pR to %pR add_size %llx add_align %llx alt_size %llx alt_align %llx req_size %llx req_align %llx\n",
+ (int)(b_res - &bus->self->resource[0]),
b_res, &bus->busn_res,
(unsigned long long)final_add_size,
(unsigned long long)min_add_align,
--
1.8.4.5
--
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