* Re: [PATCH V2 3/5] sys_info: add help to translate sys_info string to bitmap
2025-06-16 4:25 ` [PATCH V2 3/5] sys_info: add help to translate sys_info string to bitmap kernel test robot
@ 2025-06-16 15:08 ` Feng Tang
0 siblings, 0 replies; 2+ messages in thread
From: Feng Tang @ 2025-06-16 15:08 UTC (permalink / raw)
To: kernel test robot
Cc: Andrew Morton, Petr Mladek, Steven Rostedt, Lance Yang,
Jonathan Corbet, linux-kernel, llvm, oe-kbuild-all,
Linux Memory Management List, paulmck, john.ogness
On Mon, Jun 16, 2025 at 12:25:29PM +0800, kernel test robot wrote:
> Hi Feng,
>
> kernel test robot noticed the following build warnings:
>
> [auto build test WARNING on akpm-mm/mm-nonmm-unstable]
> [also build test WARNING on akpm-mm/mm-everything linus/master v6.16-rc2 next-20250613]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
>
> url: https://github.com/intel-lab-lkp/linux/commits/Feng-Tang/panic-clean-up-code-for-console-replay/20250616-091042
> base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable
> patch link: https://lore.kernel.org/r/20250616010840.38258-4-feng.tang%40linux.alibaba.com
> patch subject: [PATCH V2 3/5] sys_info: add help to translate sys_info string to bitmap
> config: x86_64-buildonly-randconfig-001-20250616 (https://download.01.org/0day-ci/archive/20250616/202506161234.wRZSzo5v-lkp@intel.com/config)
> compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247)
> rustc: rustc 1.78.0 (9b00956e5 2024-04-29)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250616/202506161234.wRZSzo5v-lkp@intel.com/reproduce)
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202506161234.wRZSzo5v-lkp@intel.com/
>
> All warnings (new ones prefixed by >>):
>
> >> lib/sys_info.c:13:19: warning: unused variable 'sys_info_avail' [-Wunused-const-variable]
> 13 | static const char sys_info_avail[] = "tasks,mem,timer,lock,ftrace,all_bt,blocked_tasks";
> | ^~~~~~~~~~~~~~
> 1 warning generated.
Thanks for the reporting! This is related with CONFIG_SYSCTL=n, and
should be fixed by below patch:
---
diff --git a/lib/sys_info.c b/lib/sys_info.c
index 9693542435ba..ca289b4871b4 100644
--- a/lib/sys_info.c
+++ b/lib/sys_info.c
@@ -10,8 +10,6 @@ struct sys_info_name {
const char *name;
};
-static const char sys_info_avail[] = "tasks,mem,timer,lock,ftrace,all_bt,blocked_tasks";
-
static const struct sys_info_name si_names[] = {
{ SYS_SHOW_TASK_INFO, "tasks" },
{ SYS_SHOW_MEM_INFO, "mem" },
@@ -43,6 +41,8 @@ unsigned long sys_info_parse_param(char *str)
}
#ifdef CONFIG_SYSCTL
+static const char sys_info_avail[] = "tasks,mem,timer,lock,ftrace,all_bt,blocked_tasks";
+
int sysctl_sys_info_handler(const struct ctl_table *ro_table, int write,
void *buffer, size_t *lenp,
loff_t *ppos)
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