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Groups > linux.kernel > #1318218
| From | Heiko Carstens <heiko.carstens@de.ibm.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH/RFC 3/3] s390: query dynamic DEBUG_PAGEALLOC setting |
| Date | 2016-01-26 19:20 +0100 |
| Message-ID | <qVgnE-7Zo-15@gated-at.bofh.it> (permalink) |
| References | <qV7X4-1ZG-13@gated-at.bofh.it> <qV7X5-1ZG-33@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Tue, Jan 26, 2016 at 10:18:25AM +0100, Christian Borntraeger wrote:
> 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>
> ---
> arch/s390/kernel/dumpstack.c | 4 +++-
> arch/s390/mm/vmem.c | 10 ++++------
> 2 files changed, 7 insertions(+), 7 deletions(-)
>
> diff --git a/arch/s390/kernel/dumpstack.c b/arch/s390/kernel/dumpstack.c
> index dc8e204..a1c0530 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>
> @@ -186,7 +187,8 @@ void die(struct pt_regs *regs, const char *str)
> printk("SMP ");
> #endif
> #ifdef CONFIG_DEBUG_PAGEALLOC
> - printk("DEBUG_PAGEALLOC");
> + printk("DEBUG_PAGEALLOC(%s)",
> + debug_pagealloc_enabled() ? "enabled" : "disabled");
> #endif
I'd prefer if you change this to
if (debug_pagealloc_enabled())
printk("DEBUG_PAGEALLOC");
That way we can get rid of yet another ifdef. Having
"DEBUG_PAGEALLOC(disabled)" doesn't seem to be very helpful.
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[PATCH/RFC 0/3] Optimize CONFIG_DEBUG_PAGEALLOC Christian Borntraeger <borntraeger@de.ibm.com> - 2016-01-26 10:20 +0100
[PATCH/RFC 3/3] s390: query dynamic DEBUG_PAGEALLOC setting Christian Borntraeger <borntraeger@de.ibm.com> - 2016-01-26 10:20 +0100
Re: [PATCH/RFC 3/3] s390: query dynamic DEBUG_PAGEALLOC setting Heiko Carstens <heiko.carstens@de.ibm.com> - 2016-01-26 19:20 +0100
Re: [PATCH/RFC 3/3] s390: query dynamic DEBUG_PAGEALLOC setting Thomas Gleixner <tglx@linutronix.de> - 2016-01-26 21:50 +0100
Re: [PATCH/RFC 3/3] s390: query dynamic DEBUG_PAGEALLOC setting David Rientjes <rientjes@google.com> - 2016-01-27 00:30 +0100
Re: [PATCH/RFC 3/3] s390: query dynamic DEBUG_PAGEALLOC setting Joonsoo Kim <iamjoonsoo.kim@lge.com> - 2016-01-27 01:20 +0100
Re: [PATCH/RFC 3/3] s390: query dynamic DEBUG_PAGEALLOC setting David Rientjes <rientjes@google.com> - 2016-01-27 01:40 +0100
Re: [PATCH/RFC 3/3] s390: query dynamic DEBUG_PAGEALLOC setting Joonsoo Kim <iamjoonsoo.kim@lge.com> - 2016-01-27 02:00 +0100
Re: [PATCH/RFC 3/3] s390: query dynamic DEBUG_PAGEALLOC setting Christian Borntraeger <borntraeger@de.ibm.com> - 2016-01-27 09:00 +0100
Re: [PATCH/RFC 3/3] s390: query dynamic DEBUG_PAGEALLOC setting Vlastimil Babka <vbabka@suse.cz> - 2016-01-27 13:50 +0100
Re: [PATCH/RFC 3/3] s390: query dynamic DEBUG_PAGEALLOC setting Christian Borntraeger <borntraeger@de.ibm.com> - 2016-01-27 13:50 +0100
Re: [PATCH/RFC 3/3] s390: query dynamic DEBUG_PAGEALLOC setting Christian Borntraeger <borntraeger@de.ibm.com> - 2016-01-27 14:10 +0100
Re: [PATCH/RFC 3/3] s390: query dynamic DEBUG_PAGEALLOC setting Vlastimil Babka <vbabka@suse.cz> - 2016-01-27 14:10 +0100
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