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| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2016-03-15 14:57:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-15 16:55:16 -0700 |
| commit | 10917b8393521b608f26294b3815261d472f7e9b (patch) | |
| tree | 61f98200a3c8a86fb76ac32e14f6b2f99b0b2937 /arch/s390/kernel/dumpstack.c | |
| parent | 288cf3c64e4522d28349de5345348574cbe9df83 (diff) | |
| download | linux-stable-10917b8393521b608f26294b3815261d472f7e9b.tar.gz linux-stable-10917b8393521b608f26294b3815261d472f7e9b.tar.bz2 linux-stable-10917b8393521b608f26294b3815261d472f7e9b.zip | |
s390: query dynamic DEBUG_PAGEALLOC setting
We can use debug_pagealloc_enabled() to check if we can map the identity
mapping with 1MB/2GB pages as well as to print the current setting in
dump_stack.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Laura Abbott <labbott@fedoraproject.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/s390/kernel/dumpstack.c')
| -rw-r--r-- | arch/s390/kernel/dumpstack.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/s390/kernel/dumpstack.c b/arch/s390/kernel/dumpstack.c index 02bd02ff648b..14c1ed3617c9 100644 --- a/arch/s390/kernel/dumpstack.c +++ b/arch/s390/kernel/dumpstack.c @@ -11,6 +11,7 @@ #include <linux/export.h> #include <linux/kdebug.h> #include <linux/ptrace.h> +#include <linux/mm.h> #include <linux/module.h> #include <linux/sched.h> #include <asm/processor.h> @@ -184,9 +185,8 @@ void die(struct pt_regs *regs, const char *str) #ifdef CONFIG_SMP printk("SMP "); #endif -#ifdef CONFIG_DEBUG_PAGEALLOC - printk("DEBUG_PAGEALLOC"); -#endif + if (debug_pagealloc_enabled()) + printk("DEBUG_PAGEALLOC"); printk("\n"); notify_die(DIE_OOPS, str, regs, 0, regs->int_code & 0xffff, SIGSEGV); print_modules(); |