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[PATCH 2/2] arch:mm: Use hugetlb_bad_size

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  [PATCH 2/2] arch:mm: Use hugetlb_bad_size Vaishali Thakkar <vaishali.thakkar@oracle.com> - 2016-03-22 11:20 +0100
    Re: [PATCH 2/2] arch:mm: Use hugetlb_bad_size Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> - 2016-03-23 00:50 +0100
    Re: [PATCH 2/2] arch:mm: Use hugetlb_bad_size Mike Kravetz <mike.kravetz@oracle.com> - 2016-03-23 03:50 +0100
    Re: [PATCH 2/2] arch:mm: Use hugetlb_bad_size "Hillf Danton" <hillf.zj@alibaba-inc.com> - 2016-03-23 04:20 +0100
      Re: [PATCH 2/2] arch:mm: Use hugetlb_bad_size Vaishali Thakkar <vaishali.thakkar@oracle.com> - 2016-03-23 05:00 +0100
        Re: [PATCH 2/2] arch:mm: Use hugetlb_bad_size "Hillf Danton" <hillf.zj@alibaba-inc.com> - 2016-03-23 05:20 +0100
          Re: [PATCH 2/2] arch:mm: Use hugetlb_bad_size Andrew Morton <akpm@linux-foundation.org> - 2016-03-23 21:40 +0100

#1362454 — [PATCH 2/2] arch:mm: Use hugetlb_bad_size

Update the setup_hugepagesz function to call the routine
hugetlb_bad_size when unsupported hugepage size is found.

Misc:
  - Silent 80 characters warning

Signed-off-by: Vaishali Thakkar <vaishali.thakkar@oracle.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Yaowei Bai <baiyaowei@cmss.chinamobile.com>
Cc: Dominik Dingel <dingel@linux.vnet.ibm.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
---
- Please note that the patch is tested for x86 only. But as this
  is one line change I just changed them. So, it would be good if
  the patch can be tested for other architectures before adding
  this in to mainline.
- Not sure if printk related checkpatch.pl warning should be resolved
  with this patch as code is not consistent in architectures. May be
  one separate patch for changing all printk's to pr_<level> kind of
  debugging functions would be good.
---
 arch/arm64/mm/hugetlbpage.c   | 1 +
 arch/metag/mm/hugetlbpage.c   | 1 +
 arch/powerpc/mm/hugetlbpage.c | 7 +++++--
 arch/tile/mm/hugetlbpage.c    | 7 ++++++-
 arch/x86/mm/hugetlbpage.c     | 1 +
 5 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/mm/hugetlbpage.c b/arch/arm64/mm/hugetlbpage.c
index 589fd28..aa8aee7 100644
--- a/arch/arm64/mm/hugetlbpage.c
+++ b/arch/arm64/mm/hugetlbpage.c
@@ -307,6 +307,7 @@ static __init int setup_hugepagesz(char *opt)
 	} else if (ps == PUD_SIZE) {
 		hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
 	} else {
+		hugetlb_bad_size();
 		pr_err("hugepagesz: Unsupported page size %lu K\n", ps >> 10);
 		return 0;
 	}
diff --git a/arch/metag/mm/hugetlbpage.c b/arch/metag/mm/hugetlbpage.c
index b38700a..db1b7da 100644
--- a/arch/metag/mm/hugetlbpage.c
+++ b/arch/metag/mm/hugetlbpage.c
@@ -239,6 +239,7 @@ static __init int setup_hugepagesz(char *opt)
 	if (ps == (1 << HPAGE_SHIFT)) {
 		hugetlb_add_hstate(HPAGE_SHIFT - PAGE_SHIFT);
 	} else {
+		hugetlb_bad_size();
 		pr_err("hugepagesz: Unsupported page size %lu M\n",
 		       ps >> 20);
 		return 0;
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 6dd272b..a437ff7 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -772,8 +772,11 @@ static int __init hugepage_setup_sz(char *str)
 
 	size = memparse(str, &str);
 
-	if (add_huge_page_size(size) != 0)
-		printk(KERN_WARNING "Invalid huge page size specified(%llu)\n", size);
+	if (add_huge_page_size(size) != 0) {
+		hugetlb_bad_size();
+		printk(KERN_WARNING "Invalid huge page size specified(%llu)\n",
+		       size);
+	}
 
 	return 1;
 }
diff --git a/arch/tile/mm/hugetlbpage.c b/arch/tile/mm/hugetlbpage.c
index e212c64..77ceaa3 100644
--- a/arch/tile/mm/hugetlbpage.c
+++ b/arch/tile/mm/hugetlbpage.c
@@ -308,11 +308,16 @@ static bool saw_hugepagesz;
 
 static __init int setup_hugepagesz(char *opt)
 {
+	int rc;
+
 	if (!saw_hugepagesz) {
 		saw_hugepagesz = true;
 		memset(huge_shift, 0, sizeof(huge_shift));
 	}
-	return __setup_hugepagesz(memparse(opt, NULL));
+	rc = __setup_hugepagesz(memparse(opt, NULL));
+	if (rc)
+		hugetlb_bad_size();
+	return rc;
 }
 __setup("hugepagesz=", setup_hugepagesz);
 
diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
index 740d7ac..3ec44f8 100644
--- a/arch/x86/mm/hugetlbpage.c
+++ b/arch/x86/mm/hugetlbpage.c
@@ -165,6 +165,7 @@ static __init int setup_hugepagesz(char *opt)
 	} else if (ps == PUD_SIZE && cpu_has_gbpages) {
 		hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
 	} else {
+		hugetlb_bad_size();
 		printk(KERN_ERR "hugepagesz: Unsupported page size %lu M\n",
 			ps >> 20);
 		return 0;
-- 
2.1.4

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#1363131

On Tue, Mar 22, 2016 at 03:35:59PM +0530, Vaishali Thakkar wrote:
> Update the setup_hugepagesz function to call the routine
> hugetlb_bad_size when unsupported hugepage size is found.
> 
> Misc:
>   - Silent 80 characters warning
> 
> Signed-off-by: Vaishali Thakkar <vaishali.thakkar@oracle.com>
> Cc: Mike Kravetz <mike.kravetz@oracle.com>
> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
> Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
> Cc: Michal Hocko <mhocko@suse.com>
> Cc: Yaowei Bai <baiyaowei@cmss.chinamobile.com>
> Cc: Dominik Dingel <dingel@linux.vnet.ibm.com>
> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
> Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
> Cc: Dave Hansen <dave.hansen@linux.intel.com>

Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>

> ---
> - Please note that the patch is tested for x86 only. But as this
>   is one line change I just changed them. So, it would be good if
>   the patch can be tested for other architectures before adding
>   this in to mainline.
> - Not sure if printk related checkpatch.pl warning should be resolved
>   with this patch as code is not consistent in architectures. May be
>   one separate patch for changing all printk's to pr_<level> kind of
>   debugging functions would be good.
> ---
>  arch/arm64/mm/hugetlbpage.c   | 1 +
>  arch/metag/mm/hugetlbpage.c   | 1 +
>  arch/powerpc/mm/hugetlbpage.c | 7 +++++--
>  arch/tile/mm/hugetlbpage.c    | 7 ++++++-
>  arch/x86/mm/hugetlbpage.c     | 1 +
>  5 files changed, 14 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm64/mm/hugetlbpage.c b/arch/arm64/mm/hugetlbpage.c
> index 589fd28..aa8aee7 100644
> --- a/arch/arm64/mm/hugetlbpage.c
> +++ b/arch/arm64/mm/hugetlbpage.c
> @@ -307,6 +307,7 @@ static __init int setup_hugepagesz(char *opt)
>  	} else if (ps == PUD_SIZE) {
>  		hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
>  	} else {
> +		hugetlb_bad_size();
>  		pr_err("hugepagesz: Unsupported page size %lu K\n", ps >> 10);
>  		return 0;
>  	}
> diff --git a/arch/metag/mm/hugetlbpage.c b/arch/metag/mm/hugetlbpage.c
> index b38700a..db1b7da 100644
> --- a/arch/metag/mm/hugetlbpage.c
> +++ b/arch/metag/mm/hugetlbpage.c
> @@ -239,6 +239,7 @@ static __init int setup_hugepagesz(char *opt)
>  	if (ps == (1 << HPAGE_SHIFT)) {
>  		hugetlb_add_hstate(HPAGE_SHIFT - PAGE_SHIFT);
>  	} else {
> +		hugetlb_bad_size();
>  		pr_err("hugepagesz: Unsupported page size %lu M\n",
>  		       ps >> 20);
>  		return 0;
> diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
> index 6dd272b..a437ff7 100644
> --- a/arch/powerpc/mm/hugetlbpage.c
> +++ b/arch/powerpc/mm/hugetlbpage.c
> @@ -772,8 +772,11 @@ static int __init hugepage_setup_sz(char *str)
>  
>  	size = memparse(str, &str);
>  
> -	if (add_huge_page_size(size) != 0)
> -		printk(KERN_WARNING "Invalid huge page size specified(%llu)\n", size);
> +	if (add_huge_page_size(size) != 0) {
> +		hugetlb_bad_size();
> +		printk(KERN_WARNING "Invalid huge page size specified(%llu)\n",
> +		       size);
> +	}
>  
>  	return 1;
>  }
> diff --git a/arch/tile/mm/hugetlbpage.c b/arch/tile/mm/hugetlbpage.c
> index e212c64..77ceaa3 100644
> --- a/arch/tile/mm/hugetlbpage.c
> +++ b/arch/tile/mm/hugetlbpage.c
> @@ -308,11 +308,16 @@ static bool saw_hugepagesz;
>  
>  static __init int setup_hugepagesz(char *opt)
>  {
> +	int rc;
> +
>  	if (!saw_hugepagesz) {
>  		saw_hugepagesz = true;
>  		memset(huge_shift, 0, sizeof(huge_shift));
>  	}
> -	return __setup_hugepagesz(memparse(opt, NULL));
> +	rc = __setup_hugepagesz(memparse(opt, NULL));
> +	if (rc)
> +		hugetlb_bad_size();
> +	return rc;
>  }
>  __setup("hugepagesz=", setup_hugepagesz);
>  
> diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
> index 740d7ac..3ec44f8 100644
> --- a/arch/x86/mm/hugetlbpage.c
> +++ b/arch/x86/mm/hugetlbpage.c
> @@ -165,6 +165,7 @@ static __init int setup_hugepagesz(char *opt)
>  	} else if (ps == PUD_SIZE && cpu_has_gbpages) {
>  		hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
>  	} else {
> +		hugetlb_bad_size();
>  		printk(KERN_ERR "hugepagesz: Unsupported page size %lu M\n",
>  			ps >> 20);
>  		return 0;
> -- 
> 2.1.4
> 

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#1363183

On 03/22/2016 03:05 AM, Vaishali Thakkar wrote:
> Update the setup_hugepagesz function to call the routine
> hugetlb_bad_size when unsupported hugepage size is found.
> 
> Misc:
>   - Silent 80 characters warning
> 
> Signed-off-by: Vaishali Thakkar <vaishali.thakkar@oracle.com>
> Cc: Mike Kravetz <mike.kravetz@oracle.com>
> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
> Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
> Cc: Michal Hocko <mhocko@suse.com>
> Cc: Yaowei Bai <baiyaowei@cmss.chinamobile.com>
> Cc: Dominik Dingel <dingel@linux.vnet.ibm.com>
> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
> Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
> Cc: Dave Hansen <dave.hansen@linux.intel.com>
> ---

Looks fine to me,

Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>

> - Please note that the patch is tested for x86 only. But as this
>   is one line change I just changed them. So, it would be good if
>   the patch can be tested for other architectures before adding
>   this in to mainline.
> - Not sure if printk related checkpatch.pl warning should be resolved
>   with this patch as code is not consistent in architectures. May be
>   one separate patch for changing all printk's to pr_<level> kind of
>   debugging functions would be good.
> ---
>  arch/arm64/mm/hugetlbpage.c   | 1 +
>  arch/metag/mm/hugetlbpage.c   | 1 +
>  arch/powerpc/mm/hugetlbpage.c | 7 +++++--
>  arch/tile/mm/hugetlbpage.c    | 7 ++++++-
>  arch/x86/mm/hugetlbpage.c     | 1 +
>  5 files changed, 14 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm64/mm/hugetlbpage.c b/arch/arm64/mm/hugetlbpage.c
> index 589fd28..aa8aee7 100644
> --- a/arch/arm64/mm/hugetlbpage.c
> +++ b/arch/arm64/mm/hugetlbpage.c
> @@ -307,6 +307,7 @@ static __init int setup_hugepagesz(char *opt)
>  	} else if (ps == PUD_SIZE) {
>  		hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
>  	} else {
> +		hugetlb_bad_size();
>  		pr_err("hugepagesz: Unsupported page size %lu K\n", ps >> 10);
>  		return 0;
>  	}
> diff --git a/arch/metag/mm/hugetlbpage.c b/arch/metag/mm/hugetlbpage.c
> index b38700a..db1b7da 100644
> --- a/arch/metag/mm/hugetlbpage.c
> +++ b/arch/metag/mm/hugetlbpage.c
> @@ -239,6 +239,7 @@ static __init int setup_hugepagesz(char *opt)
>  	if (ps == (1 << HPAGE_SHIFT)) {
>  		hugetlb_add_hstate(HPAGE_SHIFT - PAGE_SHIFT);
>  	} else {
> +		hugetlb_bad_size();
>  		pr_err("hugepagesz: Unsupported page size %lu M\n",
>  		       ps >> 20);
>  		return 0;
> diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
> index 6dd272b..a437ff7 100644
> --- a/arch/powerpc/mm/hugetlbpage.c
> +++ b/arch/powerpc/mm/hugetlbpage.c
> @@ -772,8 +772,11 @@ static int __init hugepage_setup_sz(char *str)
>  
>  	size = memparse(str, &str);
>  
> -	if (add_huge_page_size(size) != 0)
> -		printk(KERN_WARNING "Invalid huge page size specified(%llu)\n", size);
> +	if (add_huge_page_size(size) != 0) {
> +		hugetlb_bad_size();
> +		printk(KERN_WARNING "Invalid huge page size specified(%llu)\n",
> +		       size);
> +	}
>  
>  	return 1;
>  }
> diff --git a/arch/tile/mm/hugetlbpage.c b/arch/tile/mm/hugetlbpage.c
> index e212c64..77ceaa3 100644
> --- a/arch/tile/mm/hugetlbpage.c
> +++ b/arch/tile/mm/hugetlbpage.c
> @@ -308,11 +308,16 @@ static bool saw_hugepagesz;
>  
>  static __init int setup_hugepagesz(char *opt)
>  {
> +	int rc;
> +
>  	if (!saw_hugepagesz) {
>  		saw_hugepagesz = true;
>  		memset(huge_shift, 0, sizeof(huge_shift));
>  	}
> -	return __setup_hugepagesz(memparse(opt, NULL));
> +	rc = __setup_hugepagesz(memparse(opt, NULL));
> +	if (rc)
> +		hugetlb_bad_size();
> +	return rc;
>  }
>  __setup("hugepagesz=", setup_hugepagesz);
>  
> diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
> index 740d7ac..3ec44f8 100644
> --- a/arch/x86/mm/hugetlbpage.c
> +++ b/arch/x86/mm/hugetlbpage.c
> @@ -165,6 +165,7 @@ static __init int setup_hugepagesz(char *opt)
>  	} else if (ps == PUD_SIZE && cpu_has_gbpages) {
>  		hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
>  	} else {
> +		hugetlb_bad_size();
>  		printk(KERN_ERR "hugepagesz: Unsupported page size %lu M\n",
>  			ps >> 20);
>  		return 0;
> 


-- 
Mike Kravetz

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#1363187

> 
> Update the setup_hugepagesz function to call the routine
> hugetlb_bad_size when unsupported hugepage size is found.
> 
> Misc:
>   - Silent 80 characters warning
> 
> Signed-off-by: Vaishali Thakkar <vaishali.thakkar@oracle.com>
> Cc: Mike Kravetz <mike.kravetz@oracle.com>
> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
> Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
> Cc: Michal Hocko <mhocko@suse.com>
> Cc: Yaowei Bai <baiyaowei@cmss.chinamobile.com>
> Cc: Dominik Dingel <dingel@linux.vnet.ibm.com>
> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
> Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
> Cc: Dave Hansen <dave.hansen@linux.intel.com>
> ---
> - Please note that the patch is tested for x86 only. But as this
>   is one line change I just changed them. So, it would be good if
>   the patch can be tested for other architectures before adding
>   this in to mainline.
> - Not sure if printk related checkpatch.pl warning should be resolved
>   with this patch as code is not consistent in architectures. May be
>   one separate patch for changing all printk's to pr_<level> kind of
>   debugging functions would be good.
> ---
>  arch/arm64/mm/hugetlbpage.c   | 1 +
>  arch/metag/mm/hugetlbpage.c   | 1 +
>  arch/powerpc/mm/hugetlbpage.c | 7 +++++--
>  arch/tile/mm/hugetlbpage.c    | 7 ++++++-

Looks Chris Metcalf <cmetcalf@ezchip.com> not cced;-(

>  arch/x86/mm/hugetlbpage.c     | 1 +
>  5 files changed, 14 insertions(+), 3 deletions(-)
> 

Help more if separate patches rather than a monolithic one are 
delivered to the arch maintainers. 

> diff --git a/arch/arm64/mm/hugetlbpage.c b/arch/arm64/mm/hugetlbpage.c
> index 589fd28..aa8aee7 100644
> --- a/arch/arm64/mm/hugetlbpage.c
> +++ b/arch/arm64/mm/hugetlbpage.c
> @@ -307,6 +307,7 @@ static __init int setup_hugepagesz(char *opt)
>  	} else if (ps == PUD_SIZE) {
>  		hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
>  	} else {
> +		hugetlb_bad_size();
>  		pr_err("hugepagesz: Unsupported page size %lu K\n", ps >> 10);
>  		return 0;
>  	}
> diff --git a/arch/metag/mm/hugetlbpage.c b/arch/metag/mm/hugetlbpage.c
> index b38700a..db1b7da 100644
> --- a/arch/metag/mm/hugetlbpage.c
> +++ b/arch/metag/mm/hugetlbpage.c
> @@ -239,6 +239,7 @@ static __init int setup_hugepagesz(char *opt)
>  	if (ps == (1 << HPAGE_SHIFT)) {
>  		hugetlb_add_hstate(HPAGE_SHIFT - PAGE_SHIFT);
>  	} else {
> +		hugetlb_bad_size();
>  		pr_err("hugepagesz: Unsupported page size %lu M\n",
>  		       ps >> 20);
>  		return 0;
> diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
> index 6dd272b..a437ff7 100644
> --- a/arch/powerpc/mm/hugetlbpage.c
> +++ b/arch/powerpc/mm/hugetlbpage.c
> @@ -772,8 +772,11 @@ static int __init hugepage_setup_sz(char *str)
> 
>  	size = memparse(str, &str);
> 
> -	if (add_huge_page_size(size) != 0)
> -		printk(KERN_WARNING "Invalid huge page size specified(%llu)\n", size);
> +	if (add_huge_page_size(size) != 0) {
> +		hugetlb_bad_size();
> +		printk(KERN_WARNING "Invalid huge page size specified(%llu)\n",
> +		       size);
> +	}
> 
>  	return 1;
>  }
> diff --git a/arch/tile/mm/hugetlbpage.c b/arch/tile/mm/hugetlbpage.c
> index e212c64..77ceaa3 100644
> --- a/arch/tile/mm/hugetlbpage.c
> +++ b/arch/tile/mm/hugetlbpage.c
> @@ -308,11 +308,16 @@ static bool saw_hugepagesz;
> 
>  static __init int setup_hugepagesz(char *opt)
>  {
> +	int rc;
> +
>  	if (!saw_hugepagesz) {
>  		saw_hugepagesz = true;
>  		memset(huge_shift, 0, sizeof(huge_shift));
>  	}
> -	return __setup_hugepagesz(memparse(opt, NULL));
> +	rc = __setup_hugepagesz(memparse(opt, NULL));
> +	if (rc)
> +		hugetlb_bad_size();
> +	return rc;
>  }
>  __setup("hugepagesz=", setup_hugepagesz);
> 
> diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
> index 740d7ac..3ec44f8 100644
> --- a/arch/x86/mm/hugetlbpage.c
> +++ b/arch/x86/mm/hugetlbpage.c
> @@ -165,6 +165,7 @@ static __init int setup_hugepagesz(char *opt)
>  	} else if (ps == PUD_SIZE && cpu_has_gbpages) {
>  		hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
>  	} else {
> +		hugetlb_bad_size();
>  		printk(KERN_ERR "hugepagesz: Unsupported page size %lu M\n",
>  			ps >> 20);
>  		return 0;
> --
> 2.1.4

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#1363191

On Wednesday 23 March 2016 08:45 AM, Hillf Danton wrote:
>> Update the setup_hugepagesz function to call the routine
>> hugetlb_bad_size when unsupported hugepage size is found.
>>
>> Misc:
>>   - Silent 80 characters warning
>>
>> Signed-off-by: Vaishali Thakkar <vaishali.thakkar@oracle.com>
>> Cc: Mike Kravetz <mike.kravetz@oracle.com>
>> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
>> Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
>> Cc: Michal Hocko <mhocko@suse.com>
>> Cc: Yaowei Bai <baiyaowei@cmss.chinamobile.com>
>> Cc: Dominik Dingel <dingel@linux.vnet.ibm.com>
>> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
>> Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
>> Cc: Dave Hansen <dave.hansen@linux.intel.com>
>> ---
>> - Please note that the patch is tested for x86 only. But as this
>>   is one line change I just changed them. So, it would be good if
>>   the patch can be tested for other architectures before adding
>>   this in to mainline.
>> - Not sure if printk related checkpatch.pl warning should be resolved
>>   with this patch as code is not consistent in architectures. May be
>>   one separate patch for changing all printk's to pr_<level> kind of
>>   debugging functions would be good.
>> ---
>>  arch/arm64/mm/hugetlbpage.c   | 1 +
>>  arch/metag/mm/hugetlbpage.c   | 1 +
>>  arch/powerpc/mm/hugetlbpage.c | 7 +++++--
>>  arch/tile/mm/hugetlbpage.c    | 7 ++++++-
> Looks Chris Metcalf <cmetcalf@ezchip.com> not cced;-(
>
>>  arch/x86/mm/hugetlbpage.c     | 1 +
>>  5 files changed, 14 insertions(+), 3 deletions(-)
>>
> Help more if separate patches rather than a monolithic one are 
> delivered to the arch maintainers. 

Do you want me to send new version of the patchset breaking this patch in
to separate patches?

>> diff --git a/arch/arm64/mm/hugetlbpage.c b/arch/arm64/mm/hugetlbpage.c
>> index 589fd28..aa8aee7 100644
>> --- a/arch/arm64/mm/hugetlbpage.c
>> +++ b/arch/arm64/mm/hugetlbpage.c
>> @@ -307,6 +307,7 @@ static __init int setup_hugepagesz(char *opt)
>>  	} else if (ps == PUD_SIZE) {
>>  		hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
>>  	} else {
>> +		hugetlb_bad_size();
>>  		pr_err("hugepagesz: Unsupported page size %lu K\n", ps >> 10);
>>  		return 0;
>>  	}
>> diff --git a/arch/metag/mm/hugetlbpage.c b/arch/metag/mm/hugetlbpage.c
>> index b38700a..db1b7da 100644
>> --- a/arch/metag/mm/hugetlbpage.c
>> +++ b/arch/metag/mm/hugetlbpage.c
>> @@ -239,6 +239,7 @@ static __init int setup_hugepagesz(char *opt)
>>  	if (ps == (1 << HPAGE_SHIFT)) {
>>  		hugetlb_add_hstate(HPAGE_SHIFT - PAGE_SHIFT);
>>  	} else {
>> +		hugetlb_bad_size();
>>  		pr_err("hugepagesz: Unsupported page size %lu M\n",
>>  		       ps >> 20);
>>  		return 0;
>> diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
>> index 6dd272b..a437ff7 100644
>> --- a/arch/powerpc/mm/hugetlbpage.c
>> +++ b/arch/powerpc/mm/hugetlbpage.c
>> @@ -772,8 +772,11 @@ static int __init hugepage_setup_sz(char *str)
>>
>>  	size = memparse(str, &str);
>>
>> -	if (add_huge_page_size(size) != 0)
>> -		printk(KERN_WARNING "Invalid huge page size specified(%llu)\n", size);
>> +	if (add_huge_page_size(size) != 0) {
>> +		hugetlb_bad_size();
>> +		printk(KERN_WARNING "Invalid huge page size specified(%llu)\n",
>> +		       size);
>> +	}
>>
>>  	return 1;
>>  }
>> diff --git a/arch/tile/mm/hugetlbpage.c b/arch/tile/mm/hugetlbpage.c
>> index e212c64..77ceaa3 100644
>> --- a/arch/tile/mm/hugetlbpage.c
>> +++ b/arch/tile/mm/hugetlbpage.c
>> @@ -308,11 +308,16 @@ static bool saw_hugepagesz;
>>
>>  static __init int setup_hugepagesz(char *opt)
>>  {
>> +	int rc;
>> +
>>  	if (!saw_hugepagesz) {
>>  		saw_hugepagesz = true;
>>  		memset(huge_shift, 0, sizeof(huge_shift));
>>  	}
>> -	return __setup_hugepagesz(memparse(opt, NULL));
>> +	rc = __setup_hugepagesz(memparse(opt, NULL));
>> +	if (rc)
>> +		hugetlb_bad_size();
>> +	return rc;
>>  }
>>  __setup("hugepagesz=", setup_hugepagesz);
>>
>> diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
>> index 740d7ac..3ec44f8 100644
>> --- a/arch/x86/mm/hugetlbpage.c
>> +++ b/arch/x86/mm/hugetlbpage.c
>> @@ -165,6 +165,7 @@ static __init int setup_hugepagesz(char *opt)
>>  	} else if (ps == PUD_SIZE && cpu_has_gbpages) {
>>  		hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
>>  	} else {
>> +		hugetlb_bad_size();
>>  		printk(KERN_ERR "hugepagesz: Unsupported page size %lu M\n",
>>  			ps >> 20);
>>  		return 0;
>> --
>> 2.1.4

-- 
Vaishali

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#1363194

> 
> Do you want me to send new version of the patchset breaking this patch in
> to separate patches?
> 
Yes.

thanks
Hillf

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#1363671

On Wed, 23 Mar 2016 12:12:48 +0800 "Hillf Danton" <hillf.zj@alibaba-inc.com> wrote:

> > 
> > Do you want me to send new version of the patchset breaking this patch in
> > to separate patches?
> > 
> Yes.

That would be a bit of a pain because then each arch maintainer will
need to check that the [1/1] patch is merged.  In fact the arch
maintainer can't actually merge the arch patch locally without having
[1/1] present.

Simply acking this patch would make life much simpler, please.

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