From: Adrian Bunk calibrate_delay() must be __cpuinit, not __{dev,}init. I've verified that this is correct for all users. While doing the latter, I also did the following cleanups: - remove pointless additional prototypes in C files - ensure all users #include This fixes the following section mismatches with CONFIG_HOTPLUG=n, CONFIG_HOTPLUG_CPU=y: WARNING: vmlinux.o(.text+0x1128d): Section mismatch: reference to .init.text.1:calibrate_delay (between 'check_cx686_slop' and 'set_cx86_reorder') WARNING: vmlinux.o(.text+0x25102): Section mismatch: reference to .init.text.1:calibrate_delay (between 'smp_callin' and 'cpu_coregroup_map') Signed-off-by: Adrian Bunk Cc: Ivan Kokshaysky Cc: Richard Henderson Cc: "Luck, Tony" Cc: Ralf Baechle Cc: Paul Mackerras Cc: Benjamin Herrenschmidt Cc: "David S. Miller" Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Christian Zankel Cc: Heiko Carstens Cc: Martin Schwidefsky Signed-off-by: Andrew Morton --- arch/alpha/kernel/smp.c | 4 ---- arch/frv/kernel/setup.c | 2 +- arch/ia64/kernel/smpboot.c | 1 - arch/mips/kernel/smp.c | 1 - arch/powerpc/platforms/powermac/cpufreq_32.c | 2 -- arch/sparc/kernel/sun4d_smp.c | 4 +--- arch/sparc/kernel/sun4m_smp.c | 5 ++--- arch/sparc64/kernel/smp.c | 2 -- arch/x86/kernel/cpu/cyrix.c | 2 -- arch/x86/kernel/smpboot_32.c | 2 -- arch/x86/mach-voyager/voyager_smp.c | 2 -- arch/xtensa/kernel/time.c | 2 +- drivers/s390/sysinfo.c | 2 +- init/calibrate.c | 6 +++--- 14 files changed, 9 insertions(+), 28 deletions(-) diff -puN arch/alpha/kernel/smp.c~calibrate_delay-must-be-__cpuinit arch/alpha/kernel/smp.c --- a/arch/alpha/kernel/smp.c~calibrate_delay-must-be-__cpuinit +++ a/arch/alpha/kernel/smp.c @@ -77,10 +77,6 @@ int smp_num_probed; /* Internal process int smp_num_cpus = 1; /* Number that came online. */ EXPORT_SYMBOL(smp_num_cpus); -extern void calibrate_delay(void); - - - /* * Called by both boot and secondaries to move global data into * per-processor storage. diff -puN arch/frv/kernel/setup.c~calibrate_delay-must-be-__cpuinit arch/frv/kernel/setup.c --- a/arch/frv/kernel/setup.c~calibrate_delay-must-be-__cpuinit +++ a/arch/frv/kernel/setup.c @@ -708,7 +708,7 @@ static void __init reserve_dma_coherent( /* * calibrate the delay loop */ -void __init calibrate_delay(void) +void __cpuinit calibrate_delay(void) { loops_per_jiffy = __delay_loops_MHz * (1000000 / HZ); diff -puN arch/ia64/kernel/smpboot.c~calibrate_delay-must-be-__cpuinit arch/ia64/kernel/smpboot.c --- a/arch/ia64/kernel/smpboot.c~calibrate_delay-must-be-__cpuinit +++ a/arch/ia64/kernel/smpboot.c @@ -120,7 +120,6 @@ static volatile unsigned long go[SLAVE + #define DEBUG_ITC_SYNC 0 -extern void __devinit calibrate_delay (void); extern void start_ap (void); extern unsigned long ia64_iobase; diff -puN arch/mips/kernel/smp.c~calibrate_delay-must-be-__cpuinit arch/mips/kernel/smp.c --- a/arch/mips/kernel/smp.c~calibrate_delay-must-be-__cpuinit +++ a/arch/mips/kernel/smp.c @@ -53,7 +53,6 @@ int __cpu_logical_map[NR_CPUS]; /* Map EXPORT_SYMBOL(phys_cpu_present_map); EXPORT_SYMBOL(cpu_online_map); -extern void __init calibrate_delay(void); extern void cpu_idle(void); /* Number of TCs (or siblings in Intel speak) per CPU core */ diff -puN arch/powerpc/platforms/powermac/cpufreq_32.c~calibrate_delay-must-be-__cpuinit arch/powerpc/platforms/powermac/cpufreq_32.c --- a/arch/powerpc/platforms/powermac/cpufreq_32.c~calibrate_delay-must-be-__cpuinit +++ a/arch/powerpc/platforms/powermac/cpufreq_32.c @@ -113,8 +113,6 @@ static inline void debug_calc_bogomips(v * result. We backup/restore the value to avoid affecting the * core cpufreq framework's own calculation. */ - extern void calibrate_delay(void); - unsigned long save_lpj = loops_per_jiffy; calibrate_delay(); loops_per_jiffy = save_lpj; diff -puN arch/sparc/kernel/sun4d_smp.c~calibrate_delay-must-be-__cpuinit arch/sparc/kernel/sun4d_smp.c --- a/arch/sparc/kernel/sun4d_smp.c~calibrate_delay-must-be-__cpuinit +++ a/arch/sparc/kernel/sun4d_smp.c @@ -19,12 +19,12 @@ #include #include #include +#include #include #include #include -#include #include #include #include @@ -41,8 +41,6 @@ extern ctxd_t *srmmu_ctx_table_phys; -extern void calibrate_delay(void); - static volatile int smp_processors_ready = 0; static int smp_highest_cpu; extern volatile unsigned long cpu_callin_map[NR_CPUS]; diff -puN arch/sparc/kernel/sun4m_smp.c~calibrate_delay-must-be-__cpuinit arch/sparc/kernel/sun4m_smp.c --- a/arch/sparc/kernel/sun4m_smp.c~calibrate_delay-must-be-__cpuinit +++ a/arch/sparc/kernel/sun4m_smp.c @@ -16,6 +16,8 @@ #include #include #include +#include + #include #include #include @@ -23,7 +25,6 @@ #include #include -#include #include #include #include @@ -39,8 +40,6 @@ extern ctxd_t *srmmu_ctx_table_phys; -extern void calibrate_delay(void); - extern volatile unsigned long cpu_callin_map[NR_CPUS]; extern unsigned char boot_cpu_id; diff -puN arch/sparc64/kernel/smp.c~calibrate_delay-must-be-__cpuinit arch/sparc64/kernel/smp.c --- a/arch/sparc64/kernel/smp.c~calibrate_delay-must-be-__cpuinit +++ a/arch/sparc64/kernel/smp.c @@ -46,8 +46,6 @@ #include #include -extern void calibrate_delay(void); - int sparc64_multi_core __read_mostly; cpumask_t cpu_possible_map __read_mostly = CPU_MASK_NONE; diff -puN arch/x86/kernel/cpu/cyrix.c~calibrate_delay-must-be-__cpuinit arch/x86/kernel/cpu/cyrix.c --- a/arch/x86/kernel/cpu/cyrix.c~calibrate_delay-must-be-__cpuinit +++ a/arch/x86/kernel/cpu/cyrix.c @@ -83,8 +83,6 @@ static char cyrix_model_mult2[] __cpuini * FIXME: our newer udelay uses the tsc. We don't need to frob with SLOP */ -extern void calibrate_delay(void) __init; - static void __cpuinit check_cx686_slop(struct cpuinfo_x86 *c) { unsigned long flags; diff -puN arch/x86/kernel/smpboot_32.c~calibrate_delay-must-be-__cpuinit arch/x86/kernel/smpboot_32.c --- a/arch/x86/kernel/smpboot_32.c~calibrate_delay-must-be-__cpuinit +++ a/arch/x86/kernel/smpboot_32.c @@ -212,8 +212,6 @@ valid_k7: ; } -extern void calibrate_delay(void); - static atomic_t init_deasserted; static void __cpuinit smp_callin(void) diff -puN arch/x86/mach-voyager/voyager_smp.c~calibrate_delay-must-be-__cpuinit arch/x86/mach-voyager/voyager_smp.c --- a/arch/x86/mach-voyager/voyager_smp.c~calibrate_delay-must-be-__cpuinit +++ a/arch/x86/mach-voyager/voyager_smp.c @@ -444,8 +444,6 @@ static __u32 __init setup_trampoline(voi static void __init start_secondary(void *unused) { __u8 cpuid = hard_smp_processor_id(); - /* external functions not defined in the headers */ - extern void calibrate_delay(void); cpu_init(); diff -puN arch/xtensa/kernel/time.c~calibrate_delay-must-be-__cpuinit arch/xtensa/kernel/time.c --- a/arch/xtensa/kernel/time.c~calibrate_delay-must-be-__cpuinit +++ a/arch/xtensa/kernel/time.c @@ -204,7 +204,7 @@ again: } #ifndef CONFIG_GENERIC_CALIBRATE_DELAY -void __devinit calibrate_delay(void) +void __cpuinit calibrate_delay(void) { loops_per_jiffy = CCOUNT_PER_JIFFY; printk("Calibrating delay loop (skipped)... " diff -puN drivers/s390/sysinfo.c~calibrate_delay-must-be-__cpuinit drivers/s390/sysinfo.c --- a/drivers/s390/sysinfo.c~calibrate_delay-must-be-__cpuinit +++ a/drivers/s390/sysinfo.c @@ -422,7 +422,7 @@ void s390_adjust_jiffies(void) /* * calibrate the delay loop */ -void __init calibrate_delay(void) +void __cpuinit calibrate_delay(void) { s390_adjust_jiffies(); /* Print the good old Bogomips line .. */ diff -puN init/calibrate.c~calibrate_delay-must-be-__cpuinit init/calibrate.c --- a/init/calibrate.c~calibrate_delay-must-be-__cpuinit +++ a/init/calibrate.c @@ -28,7 +28,7 @@ __setup("lpj=", lpj_setup); #define DELAY_CALIBRATION_TICKS ((HZ < 100) ? 1 : (HZ/100)) #define MAX_DIRECT_CALIBRATION_RETRIES 5 -static unsigned long __devinit calibrate_delay_direct(void) +static unsigned long __cpuinit calibrate_delay_direct(void) { unsigned long pre_start, start, post_start; unsigned long pre_end, end, post_end; @@ -101,7 +101,7 @@ static unsigned long __devinit calibrate return 0; } #else -static unsigned long __devinit calibrate_delay_direct(void) {return 0;} +static unsigned long __cpuinit calibrate_delay_direct(void) {return 0;} #endif /* @@ -111,7 +111,7 @@ static unsigned long __devinit calibrate */ #define LPS_PREC 8 -void __devinit calibrate_delay(void) +void __cpuinit calibrate_delay(void) { unsigned long ticks, loopbit; int lps_precision = LPS_PREC; _