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Message-ID: <202506240917.5GatGoT7-lkp@intel.com>
Date: Tue, 24 Jun 2025 09:47:01 +0800
From: kernel test robot <lkp@...el.com>
To: Hao Jia <jiahao1@...iang.com>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
linux-kernel@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>,
Linux Memory Management List <linux-mm@...ck.org>
Subject: arch/s390/appldata/appldata_mem.c:72:13: warning: stack frame size
(1040) exceeds limit (1024) in 'appldata_get_mem_data'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 78f4e737a53e1163ded2687a922fce138aee73f5
commit: e452872b40e3f1fb92adf0d573a0a6a7c9f6ce22 mm: vmscan: split proactive reclaim statistics from direct reclaim statistics
date: 3 months ago
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20250624/202506240917.5GatGoT7-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250624/202506240917.5GatGoT7-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202506240917.5GatGoT7-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> arch/s390/appldata/appldata_mem.c:72:13: warning: stack frame size (1040) exceeds limit (1024) in 'appldata_get_mem_data' [-Wframe-larger-than]
72 | static void appldata_get_mem_data(void *data)
| ^
1 warning generated.
vim +/appldata_get_mem_data +72 arch/s390/appldata/appldata_mem.c
^1da177e4c3f415 Linus Torvalds 2005-04-16 65
^1da177e4c3f415 Linus Torvalds 2005-04-16 66
^1da177e4c3f415 Linus Torvalds 2005-04-16 67 /*
^1da177e4c3f415 Linus Torvalds 2005-04-16 68 * appldata_get_mem_data()
^1da177e4c3f415 Linus Torvalds 2005-04-16 69 *
^1da177e4c3f415 Linus Torvalds 2005-04-16 70 * gather memory data
^1da177e4c3f415 Linus Torvalds 2005-04-16 71 */
^1da177e4c3f415 Linus Torvalds 2005-04-16 @72 static void appldata_get_mem_data(void *data)
^1da177e4c3f415 Linus Torvalds 2005-04-16 73 {
^1da177e4c3f415 Linus Torvalds 2005-04-16 74 /*
^1da177e4c3f415 Linus Torvalds 2005-04-16 75 * don't put large structures on the stack, we are
b1ad171efa089ae Gerald Schaefer 2009-04-23 76 * serialized through the appldata_ops_mutex and can use static
^1da177e4c3f415 Linus Torvalds 2005-04-16 77 */
^1da177e4c3f415 Linus Torvalds 2005-04-16 78 static struct sysinfo val;
f8891e5e1f93a12 Christoph Lameter 2006-06-30 79 unsigned long ev[NR_VM_EVENT_ITEMS];
^1da177e4c3f415 Linus Torvalds 2005-04-16 80 struct appldata_mem_data *mem_data;
^1da177e4c3f415 Linus Torvalds 2005-04-16 81
^1da177e4c3f415 Linus Torvalds 2005-04-16 82 mem_data = data;
^1da177e4c3f415 Linus Torvalds 2005-04-16 83 mem_data->sync_count_1++;
^1da177e4c3f415 Linus Torvalds 2005-04-16 84
f8891e5e1f93a12 Christoph Lameter 2006-06-30 85 all_vm_events(ev);
f8891e5e1f93a12 Christoph Lameter 2006-06-30 86 mem_data->pgpgin = ev[PGPGIN] >> 1;
f8891e5e1f93a12 Christoph Lameter 2006-06-30 87 mem_data->pgpgout = ev[PGPGOUT] >> 1;
f8891e5e1f93a12 Christoph Lameter 2006-06-30 88 mem_data->pswpin = ev[PSWPIN];
f8891e5e1f93a12 Christoph Lameter 2006-06-30 89 mem_data->pswpout = ev[PSWPOUT];
bb81e6050fdc0f2 Al Viro 2007-03-14 90 mem_data->pgalloc = ev[PGALLOC_NORMAL];
bb81e6050fdc0f2 Al Viro 2007-03-14 91 mem_data->pgalloc += ev[PGALLOC_DMA];
f8891e5e1f93a12 Christoph Lameter 2006-06-30 92 mem_data->pgfault = ev[PGFAULT];
f8891e5e1f93a12 Christoph Lameter 2006-06-30 93 mem_data->pgmajfault = ev[PGMAJFAULT];
^1da177e4c3f415 Linus Torvalds 2005-04-16 94
^1da177e4c3f415 Linus Torvalds 2005-04-16 95 si_meminfo(&val);
^1da177e4c3f415 Linus Torvalds 2005-04-16 96 mem_data->sharedram = val.sharedram;
^1da177e4c3f415 Linus Torvalds 2005-04-16 97 mem_data->totalram = P2K(val.totalram);
^1da177e4c3f415 Linus Torvalds 2005-04-16 98 mem_data->freeram = P2K(val.freeram);
^1da177e4c3f415 Linus Torvalds 2005-04-16 99 mem_data->totalhigh = P2K(val.totalhigh);
^1da177e4c3f415 Linus Torvalds 2005-04-16 100 mem_data->freehigh = P2K(val.freehigh);
^1da177e4c3f415 Linus Torvalds 2005-04-16 101 mem_data->bufferram = P2K(val.bufferram);
11fb998986a72aa Mel Gorman 2016-07-28 102 mem_data->cached = P2K(global_node_page_state(NR_FILE_PAGES)
347ce434d57da80 Christoph Lameter 2006-06-30 103 - val.bufferram);
^1da177e4c3f415 Linus Torvalds 2005-04-16 104
^1da177e4c3f415 Linus Torvalds 2005-04-16 105 si_swapinfo(&val);
^1da177e4c3f415 Linus Torvalds 2005-04-16 106 mem_data->totalswap = P2K(val.totalswap);
^1da177e4c3f415 Linus Torvalds 2005-04-16 107 mem_data->freeswap = P2K(val.freeswap);
^1da177e4c3f415 Linus Torvalds 2005-04-16 108
1aae0560d160ee6 Heiko Carstens 2013-01-30 109 mem_data->timestamp = get_tod_clock();
^1da177e4c3f415 Linus Torvalds 2005-04-16 110 mem_data->sync_count_2++;
^1da177e4c3f415 Linus Torvalds 2005-04-16 111 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 112
:::::: The code at line 72 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2
:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>
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https://github.com/intel/lkp-tests/wiki
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