From: Sergey Senozhatsky <senozhatsky@chromium.org>
To: Andrew Morton <akpm@linux-foundation.org>, linux-kbuild@vger.kernel.org
Cc: kernel test robot <lkp@intel.com>,
Minchan Kim <minchan@kernel.org>,
llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
Linux Memory Management List <linux-mm@kvack.org>,
linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
Sergey Senozhatsky <senozhatsky@chromium.org>
Subject: Re: [PATCH 08/14] zram: check that backends array has at least one backend
Date: Sun, 5 May 2024 15:48:32 +0900 [thread overview]
Message-ID: <20240505064832.GC8623@google.com> (raw)
In-Reply-To: <20240505051305.GB8623@google.com>
On (24/05/05 14:13), Sergey Senozhatsky wrote:
> On (24/05/05 13:39), Sergey Senozhatsky wrote:
> [..]
> > > I guess just pick one if none were selected.
>
> How do I pick one if none were selected? Does Kconfig support
> something like that?
This triggers Kconfig error:
config ZRAM_EMPTY_BACKENDS_FIXUP
bool
depends on ZRAM && !ZRAM_BACKEND_LZO && !ZRAM_BACKEND_LZ4 && \
!ZRAM_BACKEND_LZ4HC && !ZRAM_BACKEND_ZSTD && \
!ZRAM_BACKEND_DEFLATE
select ZRAM_BACKEND_LZO
drivers/block/zram/Kconfig:17:error: recursive dependency detected!
drivers/block/zram/Kconfig:17: symbol ZRAM_BACKEND_LZO is selected by ZRAM_EMPTY_BACKENDS_FIXUP
drivers/block/zram/Kconfig:52: symbol ZRAM_EMPTY_BACKENDS_FIXUP depends on ZRAM_BACKEND_LZO
I'm a little surprised by this - EMPTY_BACKENDS_FIXUP does not depend
on ZRAM_BACKEND_LZO, it depends on NOT ZRAM_BACKEND_LZO.
Let me Cc linux-kbuild. Kbuild folks, how do I workaround this?
next parent reply other threads:[~2024-05-05 6:48 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20240503091823.3616962-9-senozhatsky@chromium.org>
[not found] ` <202405041440.UTBQZAaf-lkp@intel.com>
[not found] ` <20240504071416.GH14947@google.com>
[not found] ` <20240504161004.f5a0aab5e5aa1033d4696c20@linux-foundation.org>
[not found] ` <20240505043957.GA8623@google.com>
[not found] ` <20240505051305.GB8623@google.com>
2024-05-05 6:48 ` Sergey Senozhatsky [this message]
2024-05-06 3:22 ` [PATCH 08/14] zram: check that backends array has at least one backend Sergey Senozhatsky
2024-05-06 5:20 ` Masahiro Yamada
2024-05-06 6:43 ` Sergey Senozhatsky
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