tree: https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git lto
head: 8047611082d70c5263114fabce8c80a4c3d251fa
commit: d6c599165eddb7f2b0f4caa0b5be6c3913bf5cfb [40/45] cpufreq, amd-pstate, lto: Fix for gcc LTO
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220624/[email protected]/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git/commit/?id=d6c599165eddb7f2b0f4caa0b5be6c3913bf5cfb
git remote add jirislaby https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git
git fetch --no-tags jirislaby lto
git checkout d6c599165eddb7f2b0f4caa0b5be6c3913bf5cfb
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/cpufreq/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <[email protected]>
All warnings (new ones prefixed by >>):
>> drivers/cpufreq/amd-pstate.c:127:15: warning: no previous prototype for 'do_amd_pstate_enable' [-Wmissing-prototypes]
127 | __visible int do_amd_pstate_enable(bool enable)
| ^~~~~~~~~~~~~~~~~~~~
>> drivers/cpufreq/amd-pstate.c:152:15: warning: no previous prototype for 'do_amd_pstate_init_perf' [-Wmissing-prototypes]
152 | __visible int do_amd_pstate_init_perf(struct amd_cpudata *cpudata)
| ^~~~~~~~~~~~~~~~~~~~~~~
>> drivers/cpufreq/amd-pstate.c:200:16: warning: no previous prototype for 'do_amd_pstate_update_perf' [-Wmissing-prototypes]
200 | __visible void do_amd_pstate_update_perf(struct amd_cpudata *cpudata, u32 min_perf,
| ^~~~~~~~~~~~~~~~~~~~~~~~~
vim +/do_amd_pstate_enable +127 drivers/cpufreq/amd-pstate.c
126
> 127 __visible int do_amd_pstate_enable(bool enable)
128 {
129 return wrmsrl_safe(MSR_AMD_CPPC_ENABLE, enable);
130 }
131
132 static int cppc_enable(bool enable)
133 {
134 int cpu, ret = 0;
135
136 for_each_present_cpu(cpu) {
137 ret = cppc_set_enable(cpu, enable);
138 if (ret)
139 return ret;
140 }
141
142 return ret;
143 }
144
145 DEFINE_STATIC_CALL(amd_pstate_enable, do_amd_pstate_enable);
146
147 static inline int amd_pstate_enable(bool enable)
148 {
149 return static_call(amd_pstate_enable)(enable);
150 }
151
> 152 __visible int do_amd_pstate_init_perf(struct amd_cpudata *cpudata)
153 {
154 u64 cap1;
155
156 int ret = rdmsrl_safe_on_cpu(cpudata->cpu, MSR_AMD_CPPC_CAP1,
157 &cap1);
158 if (ret)
159 return ret;
160
161 /*
162 * TODO: Introduce AMD specific power feature.
163 *
164 * CPPC entry doesn't indicate the highest performance in some ASICs.
165 */
166 WRITE_ONCE(cpudata->highest_perf, amd_get_highest_perf());
167
168 WRITE_ONCE(cpudata->nominal_perf, AMD_CPPC_NOMINAL_PERF(cap1));
169 WRITE_ONCE(cpudata->lowest_nonlinear_perf, AMD_CPPC_LOWNONLIN_PERF(cap1));
170 WRITE_ONCE(cpudata->lowest_perf, AMD_CPPC_LOWEST_PERF(cap1));
171
172 return 0;
173 }
174
175 static int cppc_init_perf(struct amd_cpudata *cpudata)
176 {
177 struct cppc_perf_caps cppc_perf;
178
179 int ret = cppc_get_perf_caps(cpudata->cpu, &cppc_perf);
180 if (ret)
181 return ret;
182
183 WRITE_ONCE(cpudata->highest_perf, amd_get_highest_perf());
184
185 WRITE_ONCE(cpudata->nominal_perf, cppc_perf.nominal_perf);
186 WRITE_ONCE(cpudata->lowest_nonlinear_perf,
187 cppc_perf.lowest_nonlinear_perf);
188 WRITE_ONCE(cpudata->lowest_perf, cppc_perf.lowest_perf);
189
190 return 0;
191 }
192
193 DEFINE_STATIC_CALL(amd_pstate_init_perf, do_amd_pstate_init_perf);
194
195 static inline int amd_pstate_init_perf(struct amd_cpudata *cpudata)
196 {
197 return static_call(amd_pstate_init_perf)(cpudata);
198 }
199
> 200 __visible void do_amd_pstate_update_perf(struct amd_cpudata *cpudata, u32 min_perf,
201 u32 des_perf, u32 max_perf, bool fast_switch)
202 {
203 if (fast_switch)
204 wrmsrl(MSR_AMD_CPPC_REQ, READ_ONCE(cpudata->cppc_req_cached));
205 else
206 wrmsrl_on_cpu(cpudata->cpu, MSR_AMD_CPPC_REQ,
207 READ_ONCE(cpudata->cppc_req_cached));
208 }
209
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https://01.org/lkp