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Message-ID: <202111290656.AUyxGhf2-lkp@intel.com>
Date: Mon, 29 Nov 2021 06:52:39 +0800
From: kernel test robot <lkp@...el.com>
To: Ard Biesheuvel <ardb@...nel.org>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [ardb:for-kernelci 20/27] arch/arm/common/bL_switcher.c:211:58:
error: passing argument 2 of 'cpu_suspend' from incompatible pointer type
tree: git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git for-kernelci
head: 4dc44f9fca72ac68efe2713290fadc972ead1141
commit: b3d05657e7030270a97b7b13447abe74f7fb9b4a [20/27] ARM: bL_switcher: drop unnecessary stack handling magic
config: arm-allyesconfig (https://download.01.org/0day-ci/archive/20211129/202111290656.AUyxGhf2-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
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
# https://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git/commit/?id=b3d05657e7030270a97b7b13447abe74f7fb9b4a
git remote add ardb git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git
git fetch --no-tags ardb for-kernelci
git checkout b3d05657e7030270a97b7b13447abe74f7fb9b4a
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
arch/arm/common/bL_switcher.c: In function 'bL_switch_to':
>> arch/arm/common/bL_switcher.c:211:58: error: passing argument 2 of 'cpu_suspend' from incompatible pointer type [-Werror=incompatible-pointer-types]
211 | ret = cpu_suspend((unsigned long)&handshake_ptr, bL_do_switch);
| ^~~~~~~~~~~~
| |
| void (*)(void *)
In file included from arch/arm/common/bL_switcher.c:37:
arch/arm/include/asm/suspend.h:15:39: note: expected 'int (*)(long unsigned int)' but argument is of type 'void (*)(void *)'
15 | extern int cpu_suspend(unsigned long, int (*)(unsigned long));
| ^~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
vim +/cpu_suspend +211 arch/arm/common/bL_switcher.c
119
120 /*
121 * bL_switch_to - Switch to a specific cluster for the current CPU
122 * @new_cluster_id: the ID of the cluster to switch to.
123 *
124 * This function must be called on the CPU to be switched.
125 * Returns 0 on success, else a negative status code.
126 */
127 static int bL_switch_to(unsigned int new_cluster_id)
128 {
129 unsigned int mpidr, this_cpu, that_cpu;
130 unsigned int ob_mpidr, ob_cpu, ob_cluster, ib_mpidr, ib_cpu, ib_cluster;
131 struct completion inbound_alive;
132 long volatile *handshake_ptr;
133 int ipi_nr, ret;
134
135 this_cpu = smp_processor_id();
136 ob_mpidr = read_mpidr();
137 ob_cpu = MPIDR_AFFINITY_LEVEL(ob_mpidr, 0);
138 ob_cluster = MPIDR_AFFINITY_LEVEL(ob_mpidr, 1);
139 BUG_ON(cpu_logical_map(this_cpu) != ob_mpidr);
140
141 if (new_cluster_id == ob_cluster)
142 return 0;
143
144 that_cpu = bL_switcher_cpu_pairing[this_cpu];
145 ib_mpidr = cpu_logical_map(that_cpu);
146 ib_cpu = MPIDR_AFFINITY_LEVEL(ib_mpidr, 0);
147 ib_cluster = MPIDR_AFFINITY_LEVEL(ib_mpidr, 1);
148
149 pr_debug("before switch: CPU %d MPIDR %#x -> %#x\n",
150 this_cpu, ob_mpidr, ib_mpidr);
151
152 this_cpu = smp_processor_id();
153
154 /* Close the gate for our entry vectors */
155 mcpm_set_entry_vector(ob_cpu, ob_cluster, NULL);
156 mcpm_set_entry_vector(ib_cpu, ib_cluster, NULL);
157
158 /* Install our "inbound alive" notifier. */
159 init_completion(&inbound_alive);
160 ipi_nr = register_ipi_completion(&inbound_alive, this_cpu);
161 ipi_nr |= ((1 << 16) << bL_gic_id[ob_cpu][ob_cluster]);
162 mcpm_set_early_poke(ib_cpu, ib_cluster, gic_get_sgir_physaddr(), ipi_nr);
163
164 /*
165 * Let's wake up the inbound CPU now in case it requires some delay
166 * to come online, but leave it gated in our entry vector code.
167 */
168 ret = mcpm_cpu_power_up(ib_cpu, ib_cluster);
169 if (ret) {
170 pr_err("%s: mcpm_cpu_power_up() returned %d\n", __func__, ret);
171 return ret;
172 }
173
174 /*
175 * Raise a SGI on the inbound CPU to make sure it doesn't stall
176 * in a possible WFI, such as in bL_power_down().
177 */
178 gic_send_sgi(bL_gic_id[ib_cpu][ib_cluster], 0);
179
180 /*
181 * Wait for the inbound to come up. This allows for other
182 * tasks to be scheduled in the mean time.
183 */
184 wait_for_completion(&inbound_alive);
185 mcpm_set_early_poke(ib_cpu, ib_cluster, 0, 0);
186
187 /*
188 * From this point we are entering the switch critical zone
189 * and can't take any interrupts anymore.
190 */
191 local_irq_disable();
192 local_fiq_disable();
193 trace_cpu_migrate_begin(ktime_get_real_ns(), ob_mpidr);
194
195 /* redirect GIC's SGIs to our counterpart */
196 gic_migrate_target(bL_gic_id[ib_cpu][ib_cluster]);
197
198 tick_suspend_local();
199
200 ret = cpu_pm_enter();
201
202 /* we can not tolerate errors at this point */
203 if (ret)
204 panic("%s: cpu_pm_enter() returned %d\n", __func__, ret);
205
206 /* Swap the physical CPUs in the logical map for this logical CPU. */
207 cpu_logical_map(this_cpu) = ib_mpidr;
208 cpu_logical_map(that_cpu) = ob_mpidr;
209
210 /* Let's do the actual CPU switch. */
> 211 ret = cpu_suspend((unsigned long)&handshake_ptr, bL_do_switch);
212 if (ret > 0)
213 panic("%s: cpu_suspend() returned %d\n", __func__, ret);
214
215 /* We are executing on the inbound CPU at this point */
216 mpidr = read_mpidr();
217 pr_debug("after switch: CPU %d MPIDR %#x\n", this_cpu, mpidr);
218 BUG_ON(mpidr != ib_mpidr);
219
220 mcpm_cpu_powered_up();
221
222 ret = cpu_pm_exit();
223
224 tick_resume_local();
225
226 trace_cpu_migrate_finish(ktime_get_real_ns(), ib_mpidr);
227 local_fiq_enable();
228 local_irq_enable();
229
230 *handshake_ptr = 1;
231 dsb_sev();
232
233 if (ret)
234 pr_err("%s exiting with error %d\n", __func__, ret);
235 return ret;
236 }
237
---
0-DAY CI Kernel Test Service, Intel Corporation
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