The patch titled
highmem: remove unneeded #ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT for debug_kmap_atomic()
has been added to the -mm tree. Its filename is
highmem-remove-unneeded-ifdef-config_trace_irqflags_support-for-debug_kmap_atomic.patch
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------------------------------------------------------
Subject: highmem: remove unneeded #ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT for debug_kmap_atomic()
From: Akinobu Mita <akinobu.mita@xxxxxxxxx>
In f4112de6b679d84bd9b9681c7504be7bdfb7c7d5 ("mm: introduce
debug_kmap_atomic") I said that debug_kmap_atomic() needs
CONFIG_TRACE_IRQFLAGS_SUPPORT.
It was wrong. (I thought irqs_disabled() is only available when the
architecture has CONFIG_TRACE_IRQFLAGS_SUPPORT)
Remove the #ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT check to enable
kmap_atomic() debugging for the architectures which do not have
CONFIG_TRACE_IRQFLAGS_SUPPORT.
Reported-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/highmem.h | 2 +-
mm/highmem.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff -puN include/linux/highmem.h~highmem-remove-unneeded-ifdef-config_trace_irqflags_support-for-debug_kmap_atomic include/linux/highmem.h
--- a/include/linux/highmem.h~highmem-remove-unneeded-ifdef-config_trace_irqflags_support-for-debug_kmap_atomic
+++ a/include/linux/highmem.h
@@ -27,7 +27,7 @@ static inline void invalidate_kernel_vma
#include <asm/kmap_types.h>
-#if defined(CONFIG_DEBUG_HIGHMEM) && defined(CONFIG_TRACE_IRQFLAGS_SUPPORT)
+#ifdef CONFIG_DEBUG_HIGHMEM
void debug_kmap_atomic(enum km_type type);
diff -puN mm/highmem.c~highmem-remove-unneeded-ifdef-config_trace_irqflags_support-for-debug_kmap_atomic mm/highmem.c
--- a/mm/highmem.c~highmem-remove-unneeded-ifdef-config_trace_irqflags_support-for-debug_kmap_atomic
+++ a/mm/highmem.c
@@ -422,7 +422,7 @@ void __init page_address_init(void)
#endif /* defined(CONFIG_HIGHMEM) && !defined(WANT_PAGE_VIRTUAL) */
-#if defined(CONFIG_DEBUG_HIGHMEM) && defined(CONFIG_TRACE_IRQFLAGS_SUPPORT)
+#ifdef CONFIG_DEBUG_HIGHMEM
void debug_kmap_atomic(enum km_type type)
{
_
Patches currently in -mm which might be from akinobu.mita@xxxxxxxxx are
linux-next.patch
highmem-remove-unneeded-ifdef-config_trace_irqflags_support-for-debug_kmap_atomic.patch
cpu-hotplug-introduce-cpu_notify-__cpu_notify-cpu_notify_nofail.patch
cpu-hotplug-return-better-errno-on-cpu-hotplug-failure.patch
notifier-change-notifier_from_errno0-to-return-notify_ok.patch
x86-convert-cpu-notifier-to-return-encapsulate-errno-value.patch
topology-convert-cpu-notifier-to-return-encapsulate-errno-value.patch
kernel-convert-cpu-notifier-to-return-encapsulate-errno-value.patch
slab-convert-cpu-notifier-to-return-encapsulate-errno-value.patch
iucv-convert-cpu-notifier-to-return-encapsulate-errno-value.patch
ehca-convert-cpu-notifier-to-return-encapsulate-errno-value.patch
s390-convert-cpu-notifier-to-return-encapsulate-errno-value.patch
md-convert-cpu-notifier-to-return-encapsulate-errno-value.patch
fault-injection-add-cpu-notifier-error-injection-module.patch
fault-injection-add-cpu-notifier-error-injection-module-fix.patch
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