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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/arch/powerpc/sysdev/msi_bitmap.c
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/powerpc/sysdev/msi_bitmap.c')
-rw-r--r--kernel/arch/powerpc/sysdev/msi_bitmap.c18
1 files changed, 13 insertions, 5 deletions
diff --git a/kernel/arch/powerpc/sysdev/msi_bitmap.c b/kernel/arch/powerpc/sysdev/msi_bitmap.c
index 73b64c735..ed5234ed8 100644
--- a/kernel/arch/powerpc/sysdev/msi_bitmap.c
+++ b/kernel/arch/powerpc/sysdev/msi_bitmap.c
@@ -11,6 +11,7 @@
#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/bitmap.h>
+#include <linux/bootmem.h>
#include <asm/msi_bitmap.h>
#include <asm/setup.h>
@@ -111,7 +112,7 @@ int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp)
return 0;
}
-int msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count,
+int __init_refok msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count,
struct device_node *of_node)
{
int size;
@@ -122,7 +123,15 @@ int msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count,
size = BITS_TO_LONGS(irq_count) * sizeof(long);
pr_debug("msi_bitmap: allocator bitmap size is 0x%x bytes\n", size);
- bmp->bitmap = zalloc_maybe_bootmem(size, GFP_KERNEL);
+ bmp->bitmap_from_slab = slab_is_available();
+ if (bmp->bitmap_from_slab)
+ bmp->bitmap = kzalloc(size, GFP_KERNEL);
+ else {
+ bmp->bitmap = memblock_virt_alloc(size, 0);
+ /* the bitmap won't be freed from memblock allocator */
+ kmemleak_not_leak(bmp->bitmap);
+ }
+
if (!bmp->bitmap) {
pr_debug("msi_bitmap: ENOMEM allocating allocator bitmap!\n");
return -ENOMEM;
@@ -138,7 +147,8 @@ int msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count,
void msi_bitmap_free(struct msi_bitmap *bmp)
{
- /* we can't free the bitmap we don't know if it's bootmem etc. */
+ if (bmp->bitmap_from_slab)
+ kfree(bmp->bitmap);
of_node_put(bmp->of_node);
bmp->bitmap = NULL;
}
@@ -203,8 +213,6 @@ static void __init test_basics(void)
/* Clients may WARN_ON bitmap == NULL for "not-allocated" */
WARN_ON(bmp.bitmap != NULL);
-
- kfree(bmp.bitmap);
}
static void __init test_of_node(void)