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Commit 9c2853af authored by Sam Ravnborg's avatar Sam Ravnborg Committed by David S. Miller
Browse files

sparc32: probe for cpu info only during startup 



We did a cpu_probe() call each time a CPU got online - which
only effect was to save latest CPU/FPU info for use by show_cpuinfo().
Use same setup as for sparc64 where we probe for this info during startup,
and only once.

This allowed us to annotate a few functions __init which again
fixed the following section mismatch warnings:

WARNING: vmlinux.o(.text+0x65f0): Section mismatch in reference from the function set_cpu_and_fpu() to the (unknown reference) .init.rodata:(unknown)
WARNING: vmlinux.o(.text+0x65f8): Section mismatch in reference from the function set_cpu_and_fpu() to the (unknown reference) .init.rodata:(unknown)
WARNING: vmlinux.o(.text+0x664c): Section mismatch in reference from the function set_cpu_and_fpu() to the variable .init.rodata:manufacturer_info
WARNING: vmlinux.o(.text+0x6650): Section mismatch in reference from the function set_cpu_and_fpu() to the variable .init.rodata:manufacturer_info

Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent cb1b8209

arch/sparc/include/asm/leon.h

+0 −1
Original line number Diff line number Diff line
@@ -343,7 +343,6 @@ extern void leon_smp_done(void); 
extern void leon_boot_cpus(void);

extern int leon_boot_one_cpu(int i);

void leon_init_smp(void);

extern void cpu_probe(void);

extern void cpu_idle(void);

extern void init_IRQ(void);

extern void cpu_panic(void);

arch/sparc/kernel/cpu.c

+8 −4
Original line number Diff line number Diff line
@@ -258,7 +258,7 @@ static const char *sparc_fpu_type; 
const char *sparc_pmu_type;





static void set_cpu_and_fpu(int psr_impl, int psr_vers, int fpu_vers)

static void __init set_cpu_and_fpu(int psr_impl, int psr_vers, int fpu_vers)

{

	const struct manufacturer_info *manuf;

	int i;
@@ -434,7 +434,7 @@ const struct seq_operations cpuinfo_op = { 
};



#ifdef CONFIG_SPARC32

void __cpuinit cpu_probe(void)

static int __init cpu_type_probe(void)

{

	int psr_impl, psr_vers, fpu_vers;

	int psr;
@@ -453,8 +453,12 @@ void __cpuinit cpu_probe(void) 
	put_psr(psr);



	set_cpu_and_fpu(psr_impl, psr_vers, fpu_vers);



	return 0;

}

#else

#endif /* CONFIG_SPARC32 */



#ifdef CONFIG_SPARC64

static void __init sun4v_cpu_probe(void)

{

	switch (sun4v_chip_type) {
@@ -495,6 +499,6 @@ static int __init cpu_type_probe(void) 
	}

	return 0;

}

#endif /* CONFIG_SPARC64 */



early_initcall(cpu_type_probe);
 
#endif

arch/sparc/kernel/devices.c

+0 −2
Original line number Diff line number Diff line
@@ -20,7 +20,6 @@ 
#include <asm/system.h>

#include <asm/cpudata.h>



extern void cpu_probe(void);

extern void clock_stop_probe(void); /* tadpole.c */

extern void sun4c_probe_memerr_reg(void);
@@ -133,7 +132,6 @@ void __init device_scan(void) 
	}

#endif /* !CONFIG_SMP */



	cpu_probe();

	{

		extern void auxio_probe(void);

		extern void auxio_power_probe(void);

arch/sparc/kernel/leon_smp.c

+0 −2
Original line number Diff line number Diff line
@@ -94,8 +94,6 @@ void __cpuinit leon_callin(void) 
	local_flush_cache_all();

	local_flush_tlb_all();



	cpu_probe();



	/* Fix idle thread fields. */

	__asm__ __volatile__("ld [%0], %%g6\n\t" : : "r"(&current_set[cpuid])

			     : "memory" /* paranoid */);

arch/sparc/kernel/sun4d_smp.c

+0 −2
Original line number Diff line number Diff line
@@ -80,8 +80,6 @@ void __cpuinit smp4d_callin(void) 
	local_flush_cache_all();

	local_flush_tlb_all();



	cpu_probe();



	while ((unsigned long)current_set[cpuid] < PAGE_OFFSET)

		barrier();