From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Feng Tang <feng.tang@linux.alibaba.com>
Cc: Petr Mladek <pmladek@suse.com>,
linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Nathan Chancellor <nathan@kernel.org>
Subject: Re: [PATCH v1 4/7] panic: sys_info: Replace struct sys_info_name with plain array of strings
Date: Fri, 11 Jul 2025 19:26:45 +0300 [thread overview]
Message-ID: <aHE7RfMy2St7kPma@smile.fi.intel.com> (raw)
In-Reply-To: <aHEr8NO4xHGPNjJo@U-2FWC9VHC-2323.local>
On Fri, Jul 11, 2025 at 11:21:20PM +0800, Feng Tang wrote:
> On Fri, Jul 11, 2025 at 12:51:10PM +0300, Andy Shevchenko wrote:
> > There is no need to keep a custom structure just for the need of
> > a plain array of strings. Replace struct sys_info_name with plain
> > array of strings.
> >
> > With that done, simplify the code, in particular, naturally use
> > for_each_set_bit() when iterating over si_bits_global bitmap.
>
> IIUC, this will not work.
>
> Actually there is a hole in the bitmap definition:
>
> #define SYS_INFO_PANIC_CONSOLE_REPLAY 0x00000020
>
> Ad Petr pointed in his review, it's only for panic use, that's why
> we make it invisible in sys_info.c. Eventually, we plan to deprecate
> 'panic_print', and use 'panic_sys_info' and 'panic_console_replay' to
> replace it. After that happens that user only see string interface,
> we can change these bitmap definition and remove the hole, and use
> your cleanup here.
Yeah, the hole should be move to the end of the bitmap, so we can have all
visible entries be sequential.
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2025-07-11 16:26 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-11 9:51 [rft, PATCH v1 0/7] panic: sys_info: Refactor and fix a compilation issue Andy Shevchenko
2025-07-11 9:51 ` [PATCH v1 1/7] Revert "panic: fix compilation error (`make W=1`)" Andy Shevchenko
2025-07-11 9:51 ` [PATCH v1 2/7] panic: sys_info: Align constant definition names with parameters Andy Shevchenko
2025-07-11 9:51 ` [PATCH v1 3/7] panic: sys_info: Capture si_bits_global before iterating over it Andy Shevchenko
2025-07-11 14:56 ` Feng Tang
2025-07-11 15:05 ` Andy Shevchenko
2025-07-11 9:51 ` [PATCH v1 4/7] panic: sys_info: Replace struct sys_info_name with plain array of strings Andy Shevchenko
2025-07-11 15:21 ` Feng Tang
2025-07-11 16:26 ` Andy Shevchenko [this message]
2025-07-11 9:51 ` [PATCH v1 5/7] panic: sys_info: Fix compilation error (`make W=1`) Andy Shevchenko
2025-07-11 9:51 ` [PATCH v1 6/7] panic: sys_info: Deduplicate local variable 'table; assignments Andy Shevchenko
2025-07-11 9:51 ` [PATCH v1 7/7] panic: sys_info: Factor out read and write handlers Andy Shevchenko
2025-07-11 15:09 ` Feng Tang
2025-07-11 16:34 ` Andy Shevchenko
2025-07-11 12:13 ` [rft, PATCH v1 0/7] panic: sys_info: Refactor and fix a compilation issue Andy Shevchenko
2025-07-11 15:42 ` Feng Tang
2025-07-11 16:36 ` Andy Shevchenko
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