[S390] Enable kmemleak on s390.

Also increase the maximum possible kmemleak early log entries since
2000 are not sufficient on s390.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index bc15ef9..a68ac10 100644 (file)
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -51,6 +51,7 @@ SECTIONS
 
        . = ALIGN(PAGE_SIZE);
        _eshared = .;           /* End of shareable data */
+       _sdata = .;             /* Start of data section */
 
        EXCEPTION_TABLE(16) :data
 

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 8911558..30df586 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -346,8 +346,9 @@ config SLUB_STATS
 
 config DEBUG_KMEMLEAK
        bool "Kernel memory leak detector"
-       depends on DEBUG_KERNEL && EXPERIMENTAL && (X86 || ARM || PPC) && \
-               !MEMORY_HOTPLUG
+       depends on DEBUG_KERNEL && EXPERIMENTAL && !MEMORY_HOTPLUG && \
+               (X86 || ARM || PPC || S390)
+
        select DEBUG_FS if SYSFS
        select STACKTRACE if STACKTRACE_SUPPORT
        select KALLSYMS
@@ -370,7 +371,7 @@ config DEBUG_KMEMLEAK
 config DEBUG_KMEMLEAK_EARLY_LOG_SIZE
        int "Maximum kmemleak early log entries"
        depends on DEBUG_KMEMLEAK
-       range 200 2000
+       range 200 40000
        default 400
        help
          Kmemleak must track all the memory allocations to avoid