* [PATCH 1/1] fs: debugfs: fix build error at powerpc platform
@ 2023-09-29 16:49 Frank Li
2023-09-30 7:11 ` Greg KH
2023-10-01 11:22 ` Baoquan He
0 siblings, 2 replies; 6+ messages in thread
From: Frank Li @ 2023-09-29 16:49 UTC (permalink / raw)
To: vkoul, bhe
Cc: dmaengine, frank.li, gregkh, imx, linux-kernel, lkp,
oe-kbuild-all, rafael
ld: fs/debugfs/file.o: in function `debugfs_print_regs':
file.c:(.text+0x95a): undefined reference to `ioread64be'
>> ld: file.c:(.text+0x9dd): undefined reference to `ioread64'
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202309291322.3pZiyosI-lkp@intel.com/
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
fs/debugfs/file.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
index 5b8d4fd7c747..b406283806d9 100644
--- a/fs/debugfs/file.c
+++ b/fs/debugfs/file.c
@@ -1179,7 +1179,7 @@ void debugfs_print_regs(struct seq_file *s, const struct debugfs_reg *regs,
seq_printf(s, "%s = 0x%04x\n", regs->name,
b ? ioread16be(reg) : ioread16(reg));
break;
-#ifdef CONFIG_64BIT
+#if defined(ioread64) && defined (ioread64be)
case sizeof(u64):
seq_printf(s, "%s = 0x%016llx\n", regs->name,
b ? ioread64be(reg) : ioread64(reg));
--
2.34.1
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH 1/1] fs: debugfs: fix build error at powerpc platform
2023-09-29 16:49 [PATCH 1/1] fs: debugfs: fix build error at powerpc platform Frank Li
@ 2023-09-30 7:11 ` Greg KH
2023-09-30 21:04 ` Frank Li
2023-10-01 11:22 ` Baoquan He
1 sibling, 1 reply; 6+ messages in thread
From: Greg KH @ 2023-09-30 7:11 UTC (permalink / raw)
To: Frank Li
Cc: vkoul, bhe, dmaengine, imx, linux-kernel, lkp, oe-kbuild-all,
rafael
On Fri, Sep 29, 2023 at 12:49:20PM -0400, Frank Li wrote:
> ld: fs/debugfs/file.o: in function `debugfs_print_regs':
> file.c:(.text+0x95a): undefined reference to `ioread64be'
> >> ld: file.c:(.text+0x9dd): undefined reference to `ioread64'
>
> Reported-by: kernel test robot <lkp@intel.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202309291322.3pZiyosI-lkp@intel.com/
> Signed-off-by: Frank Li <Frank.Li@nxp.com>
What commit id does this fix?
> ---
> fs/debugfs/file.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
> index 5b8d4fd7c747..b406283806d9 100644
> --- a/fs/debugfs/file.c
> +++ b/fs/debugfs/file.c
> @@ -1179,7 +1179,7 @@ void debugfs_print_regs(struct seq_file *s, const struct debugfs_reg *regs,
> seq_printf(s, "%s = 0x%04x\n", regs->name,
> b ? ioread16be(reg) : ioread16(reg));
> break;
> -#ifdef CONFIG_64BIT
> +#if defined(ioread64) && defined (ioread64be)
Are you sure this is equivalent? What if these are functions?
thanks,
greg k-h
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/1] fs: debugfs: fix build error at powerpc platform
2023-09-30 7:11 ` Greg KH
@ 2023-09-30 21:04 ` Frank Li
0 siblings, 0 replies; 6+ messages in thread
From: Frank Li @ 2023-09-30 21:04 UTC (permalink / raw)
To: Greg KH
Cc: vkoul, bhe, dmaengine, imx, linux-kernel, lkp, oe-kbuild-all,
rafael
On Sat, Sep 30, 2023 at 09:11:04AM +0200, Greg KH wrote:
> On Fri, Sep 29, 2023 at 12:49:20PM -0400, Frank Li wrote:
> > ld: fs/debugfs/file.o: in function `debugfs_print_regs':
> > file.c:(.text+0x95a): undefined reference to `ioread64be'
> > >> ld: file.c:(.text+0x9dd): undefined reference to `ioread64'
> >
> > Reported-by: kernel test robot <lkp@intel.com>
> > Closes: https://lore.kernel.org/oe-kbuild-all/202309291322.3pZiyosI-lkp@intel.com/
> > Signed-off-by: Frank Li <Frank.Li@nxp.com>
>
> What commit id does this fix?
In dmaengine tree https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git/log/?h=next
commit 09289d0ad1226c4735f8d9f68c9c3e54cbaba3d4
Author: Frank Li <Frank.Li@nxp.com>
Date: Thu Sep 21 11:01:42 2023 -0400
debugfs_create_regset32() support 8/16/64 bit width registers
>
> > ---
> > fs/debugfs/file.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
> > index 5b8d4fd7c747..b406283806d9 100644
> > --- a/fs/debugfs/file.c
> > +++ b/fs/debugfs/file.c
> > @@ -1179,7 +1179,7 @@ void debugfs_print_regs(struct seq_file *s, const struct debugfs_reg *regs,
> > seq_printf(s, "%s = 0x%04x\n", regs->name,
> > b ? ioread16be(reg) : ioread16(reg));
> > break;
> > -#ifdef CONFIG_64BIT
> > +#if defined(ioread64) && defined (ioread64be)
>
> Are you sure this is equivalent? What if these are functions?
Just dump 64bit register value. I am not sure why powerpc have not
implement this function with CONFIG_64BIT.
in io.h
#ifndef ioread64
#define ioread64 ioread64
...
#endif
I think it is better why to check if ioread64 exist.
Frank
>
> thanks,
>
> greg k-h
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/1] fs: debugfs: fix build error at powerpc platform
2023-09-29 16:49 [PATCH 1/1] fs: debugfs: fix build error at powerpc platform Frank Li
2023-09-30 7:11 ` Greg KH
@ 2023-10-01 11:22 ` Baoquan He
2023-10-01 15:42 ` Arnd Bergmann
2023-10-02 14:54 ` Frank Li
1 sibling, 2 replies; 6+ messages in thread
From: Baoquan He @ 2023-10-01 11:22 UTC (permalink / raw)
To: Frank Li
Cc: vkoul, dmaengine, gregkh, arnd, imx, linux-kernel, lkp,
oe-kbuild-all, rafael
On 09/29/23 at 12:49pm, Frank Li wrote:
> ld: fs/debugfs/file.o: in function `debugfs_print_regs':
> file.c:(.text+0x95a): undefined reference to `ioread64be'
> >> ld: file.c:(.text+0x9dd): undefined reference to `ioread64'
From your reproducer, on x86_64, GENERIC_IOMAP is selected. So the
default version of ioread64 and ioread64be in asm-generic/io.h are
bypassed. Except of those arch where ioread64 and ioread64be are
implemented specifically like alpha, arm64, parisc, power, we may need
include include/linux/io-64-nonatomic-hi-lo.h or
include/linux/io-64-nonatomic-lo-hi.h to fix above linking issue?
From my side, below change can fix the issue. However, I am not quite
sure which one is chosen between io-64-nonatomic-hi-lo.h and
io-64-nonatomic-hi-lo.h.
diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
index 87b3753aa4b1..b433be134c67 100644
--- a/fs/debugfs/file.c
+++ b/fs/debugfs/file.c
@@ -15,6 +15,7 @@
#include <linux/pagemap.h>
#include <linux/debugfs.h>
#include <linux/io.h>
+#include <linux/io-64-nonatomic-hi-lo.h>
#include <linux/slab.h>
#include <linux/atomic.h>
#include <linux/device.h>
--
2.41.0
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH 1/1] fs: debugfs: fix build error at powerpc platform
2023-10-01 11:22 ` Baoquan He
@ 2023-10-01 15:42 ` Arnd Bergmann
2023-10-02 14:54 ` Frank Li
1 sibling, 0 replies; 6+ messages in thread
From: Arnd Bergmann @ 2023-10-01 15:42 UTC (permalink / raw)
To: Baoquan He, Frank Li
Cc: Vinod Koul, dmaengine, Greg Kroah-Hartman, imx, linux-kernel,
kernel test robot, oe-kbuild-all, Rafael J . Wysocki
On Sun, Oct 1, 2023, at 07:22, Baoquan He wrote:
> On 09/29/23 at 12:49pm, Frank Li wrote:
>> ld: fs/debugfs/file.o: in function `debugfs_print_regs':
>> file.c:(.text+0x95a): undefined reference to `ioread64be'
>> >> ld: file.c:(.text+0x9dd): undefined reference to `ioread64'
>
> From your reproducer, on x86_64, GENERIC_IOMAP is selected. So the
> default version of ioread64 and ioread64be in asm-generic/io.h are
> bypassed. Except of those arch where ioread64 and ioread64be are
> implemented specifically like alpha, arm64, parisc, power, we may need
> include include/linux/io-64-nonatomic-hi-lo.h or
> include/linux/io-64-nonatomic-lo-hi.h to fix above linking issue?
>
> From my side, below change can fix the issue. However, I am not quite
> sure which one is chosen between io-64-nonatomic-hi-lo.h and
> io-64-nonatomic-hi-lo.h.
It looks like the latest version of the patch only calls
it for 64-bit targets, so this question should not come up.
On 32-bit targets, it is driver specific which one you need,
so having it generic code would require passing a flag from
a driver, but I think that adds more complexity than it help.
Arnd
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH 1/1] fs: debugfs: fix build error at powerpc platform
2023-10-01 11:22 ` Baoquan He
2023-10-01 15:42 ` Arnd Bergmann
@ 2023-10-02 14:54 ` Frank Li
1 sibling, 0 replies; 6+ messages in thread
From: Frank Li @ 2023-10-02 14:54 UTC (permalink / raw)
To: Baoquan He
Cc: vkoul, dmaengine, gregkh, arnd, imx, linux-kernel, lkp,
oe-kbuild-all, rafael
On Sun, Oct 01, 2023 at 07:22:33PM +0800, Baoquan He wrote:
> On 09/29/23 at 12:49pm, Frank Li wrote:
> > ld: fs/debugfs/file.o: in function `debugfs_print_regs':
> > file.c:(.text+0x95a): undefined reference to `ioread64be'
> > >> ld: file.c:(.text+0x9dd): undefined reference to `ioread64'
>
> >From your reproducer, on x86_64, GENERIC_IOMAP is selected. So the
> default version of ioread64 and ioread64be in asm-generic/io.h are
> bypassed. Except of those arch where ioread64 and ioread64be are
> implemented specifically like alpha, arm64, parisc, power, we may need
> include include/linux/io-64-nonatomic-hi-lo.h or
> include/linux/io-64-nonatomic-lo-hi.h to fix above linking issue?
Yes, it can fix this problem. I think hi-lo is more make sense.
It is just show register value to help debug issue. It is not big issue
even it is wrong.
Let's fix it later if someone really need lo-hi in future.
Frank
>
> >From my side, below change can fix the issue. However, I am not quite
> sure which one is chosen between io-64-nonatomic-hi-lo.h and
> io-64-nonatomic-hi-lo.h.
>
> diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
> index 87b3753aa4b1..b433be134c67 100644
> --- a/fs/debugfs/file.c
> +++ b/fs/debugfs/file.c
> @@ -15,6 +15,7 @@
> #include <linux/pagemap.h>
> #include <linux/debugfs.h>
> #include <linux/io.h>
> +#include <linux/io-64-nonatomic-hi-lo.h>
> #include <linux/slab.h>
> #include <linux/atomic.h>
> #include <linux/device.h>
> --
> 2.41.0
>
^ permalink raw reply [flat|nested] 6+ messages in thread
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2023-09-29 16:49 [PATCH 1/1] fs: debugfs: fix build error at powerpc platform Frank Li
2023-09-30 7:11 ` Greg KH
2023-09-30 21:04 ` Frank Li
2023-10-01 11:22 ` Baoquan He
2023-10-01 15:42 ` Arnd Bergmann
2023-10-02 14:54 ` Frank Li
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