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sparc: Sanitize cpu feature detection and reporting.

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Instead of evaluating the cpu features for ELF_HWCAP every exec,
calculate it once at boot time.

Add AV_SPARC_* capability flag bits, compatible with what Solaris
reports to applications.

Report these capabilities once in the kernel log, and also via
/proc/cpuinfo in a new "cpucaps" entry.

If available, fetch the cpu features from the machine description
'hwcap-list' property of the 'cpu' node.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2011-07-28 23:31:26 -07:00
parent 55f9c40ff6
commit ac85fe8b21
4 changed files with 184 additions and 35 deletions
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6
arch/sparc/kernel/kernel.h
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@ -10,6 +10,12 @@ extern const char *sparc_pmu_type;
extern unsigned int fsr_storage;
extern int ncpus_probed;
#ifdef CONFIG_SPARC64
/* setup_64.c */
struct seq_file;
extern void cpucap_info(struct seq_file *);
#endif
#ifdef CONFIG_SPARC32
/* cpu.c */
extern void cpu_probe(void);