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authorSoeren Sandmann <sandmann@daimi.au.dk>2009-10-28 18:56:35 +0100
committerIngo Molnar <mingo@elte.hu>2009-11-10 04:15:47 +0100
commitd4515646699b6ad7b1a98ceb871296b957f3ef47 (patch)
treee29bc0bd1eb291b45f58709c06d7c9c072aed6f6 /mm/highmem.c
parent5ebd4c22897dce65845807a9bd3a31cc4e142b53 (diff)
downloadvexpress-lsk-d4515646699b6ad7b1a98ceb871296b957f3ef47.tar.gz
highmem: Fix debug_kmap_atomic() to also handle KM_IRQ_PTE, KM_NMI, and KM_NMI_PTE
Previously calling debug_kmap_atomic() with these types would cause spurious warnings. (triggered by SysProf using perf events) Signed-off-by: Soeren Sandmann Pedersen <sandmann@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: a.p.zijlstra@chello.nl Cc: <stable@kernel.org> # .31.x LKML-Reference: <ye8vdhz8krw.fsf@camel23.daimi.au.dk> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'mm/highmem.c')
-rw-r--r--mm/highmem.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/mm/highmem.c b/mm/highmem.c
index 33587de6b87..9c1e627f282 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -432,10 +432,15 @@ void debug_kmap_atomic(enum km_type type)
return;
if (unlikely(in_interrupt())) {
- if (in_irq()) {
+ if (in_nmi()) {
+ if (type != KM_NMI && type != KM_NMI_PTE) {
+ WARN_ON(1);
+ warn_count--;
+ }
+ } else if (in_irq()) {
if (type != KM_IRQ0 && type != KM_IRQ1 &&
type != KM_BIO_SRC_IRQ && type != KM_BIO_DST_IRQ &&
- type != KM_BOUNCE_READ) {
+ type != KM_BOUNCE_READ && type != KM_IRQ_PTE) {
WARN_ON(1);
warn_count--;
}
@@ -452,7 +457,9 @@ void debug_kmap_atomic(enum km_type type)
}
if (type == KM_IRQ0 || type == KM_IRQ1 || type == KM_BOUNCE_READ ||
- type == KM_BIO_SRC_IRQ || type == KM_BIO_DST_IRQ) {
+ type == KM_BIO_SRC_IRQ || type == KM_BIO_DST_IRQ ||
+ type == KM_IRQ_PTE || type == KM_NMI ||
+ type == KM_NMI_PTE ) {
if (!irqs_disabled()) {
WARN_ON(1);
warn_count--;