[norov:bm-new 13/15] drivers/leds/trigger/ledtrig-cpu.c:42:17: error: redefinition of 'num_active_cpus' as different kind of symbol
From: kernel test robot
Date: Thu Dec 09 2021 - 09:33:22 EST
tree: https://github.com/norov/linux bm-new
head: b529d6ec834c582d88d8f1286490bb69ee4bedb2
commit: d9365a115ddda67b4bbe080adf3919f32b9a36c4 [13/15] kernel/cpu: add num_active_cpu counter
config: arm64-randconfig-r005-20211208 (https://download.01.org/0day-ci/archive/20211209/202112092257.dQgv78Nx-lkp@xxxxxxxxx/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 097a1cb1d5ebb3a0ec4bcaed8ba3ff6a8e33c00a)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# https://github.com/norov/linux/commit/d9365a115ddda67b4bbe080adf3919f32b9a36c4
git remote add norov https://github.com/norov/linux
git fetch --no-tags norov bm-new
git checkout d9365a115ddda67b4bbe080adf3919f32b9a36c4
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Note: the norov/bm-new HEAD b529d6ec834c582d88d8f1286490bb69ee4bedb2 builds fine.
It only hurts bisectability.
All errors (new ones prefixed by >>):
>> drivers/leds/trigger/ledtrig-cpu.c:42:17: error: redefinition of 'num_active_cpus' as different kind of symbol
static atomic_t num_active_cpus = ATOMIC_INIT(0);
^
include/linux/cpumask.h:979:28: note: previous definition is here
static inline unsigned int num_active_cpus(void)
^
>> drivers/leds/trigger/ledtrig-cpu.c:82:34: error: incompatible pointer types passing 'unsigned int (*)(void)' to parameter of type 'atomic_t *' [-Werror,-Wincompatible-pointer-types]
atomic_add(is_active ? 1 : -1, &num_active_cpus);
^~~~~~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:54:29: note: passing argument to parameter 'v' here
atomic_add(int i, atomic_t *v)
^
>> drivers/leds/trigger/ledtrig-cpu.c:83:29: error: incompatible pointer types passing 'unsigned int (*)(void)' to parameter of type 'const atomic_t *' [-Werror,-Wincompatible-pointer-types]
active_cpus = atomic_read(&num_active_cpus);
^~~~~~~~~~~~~~~~
include/linux/atomic/atomic-instrumented.h:25:29: note: passing argument to parameter 'v' here
atomic_read(const atomic_t *v)
^
3 errors generated.
vim +/num_active_cpus +42 drivers/leds/trigger/ledtrig-cpu.c
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 40
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 41 static struct led_trigger *trig_cpu_all;
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 @42 static atomic_t num_active_cpus = ATOMIC_INIT(0);
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 43
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 44 /**
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 45 * ledtrig_cpu - emit a CPU event as a trigger
c10074a1e5809e drivers/leds/trigger/ledtrig-cpu.c Lee Jones 2021-05-28 46 * @ledevt: CPU event to be emitted
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 47 *
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 48 * Emit a CPU event on a CPU core, which will trigger a
e602fda1a358a0 drivers/leds/trigger/ledtrig-cpu.c Pavel Machek 2016-10-03 49 * bound LED to turn on or turn off.
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 50 */
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 51 void ledtrig_cpu(enum cpu_led_event ledevt)
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 52 {
24c9301ffd2135 drivers/leds/trigger/ledtrig-cpu.c Christoph Lameter 2014-05-05 53 struct led_trigger_cpu *trig = this_cpu_ptr(&cpu_trig);
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 54 bool is_active = trig->is_active;
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 55
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 56 /* Locate the correct CPU LED */
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 57 switch (ledevt) {
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 58 case CPU_LED_IDLE_END:
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 59 case CPU_LED_START:
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 60 /* Will turn the LED on, max brightness */
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 61 is_active = true;
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 62 break;
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 63
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 64 case CPU_LED_IDLE_START:
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 65 case CPU_LED_STOP:
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 66 case CPU_LED_HALTED:
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 67 /* Will turn the LED off */
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 68 is_active = false;
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 69 break;
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 70
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 71 default:
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 72 /* Will leave the LED as it is */
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 73 break;
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 74 }
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 75
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 76 if (is_active != trig->is_active) {
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 77 unsigned int active_cpus;
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 78 unsigned int total_cpus;
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 79
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 80 /* Update trigger state */
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 81 trig->is_active = is_active;
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 @82 atomic_add(is_active ? 1 : -1, &num_active_cpus);
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 @83 active_cpus = atomic_read(&num_active_cpus);
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 84 total_cpus = num_present_cpus();
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 85
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 86 led_trigger_event(trig->_trig,
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 87 is_active ? LED_FULL : LED_OFF);
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 88
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 89
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 90 led_trigger_event(trig_cpu_all,
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 91 DIV_ROUND_UP(LED_FULL * active_cpus, total_cpus));
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 92
0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 93 }
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 94 }
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 95 EXPORT_SYMBOL(ledtrig_cpu);
8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 96
:::::: The code at line 42 was first introduced by commit
:::::: 0b88b71c7762a406ff99c625935474dc42a25003 leds/trigger/cpu: Add LED trigger for all CPUs aggregated
:::::: TO: Paulo Costa <me@xxxxxxxxxxxxxxxxxx>
:::::: CC: Jacek Anaszewski <jacek.anaszewski@xxxxxxxxx>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx