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Commit 874fd3b5 authored by David Daney's avatar David Daney Committed by Ralf Baechle
Browse files

MIPS: Allow the auxv's elf_platform entry to be set. 



The userspace runtime linker uses the elf_platform to find the libraries
optimized for the current CPU archecture variant.  First we need to allow it
to be set to something other than NULL.  Follow-on patches will set some
values for specific CPUs.

GLIBC already does the right thing.  The kernel just needs to supply good
data.

Signed-off-by: default avatarDavid Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/891/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 3b839070

arch/mips/include/asm/elf.h

+7 −7
Original line number Diff line number Diff line
@@ -334,14 +334,14 @@ extern int dump_task_fpu(struct task_struct *, elf_fpregset_t *); 


#define ELF_HWCAP       (0)



/* This yields a string that ld.so will use to load implementation

   specific libraries for optimization.  This is more specific in

   intent than poking at uname or /proc/cpuinfo.



   For the moment, we have only optimizations for the Intel generations,

   but that could change... */

/*

 * This yields a string that ld.so will use to load implementation

 * specific libraries for optimization.  This is more specific in

 * intent than poking at uname or /proc/cpuinfo.

 */



#define ELF_PLATFORM  (NULL)

#define ELF_PLATFORM  __elf_platform

extern const char *__elf_platform;



/*

 * See comments in asm-alpha/elf.h, this is the same thing

arch/mips/kernel/cpu-probe.c

+1 −0
Original line number Diff line number Diff line
@@ -926,6 +926,7 @@ static inline void cpu_probe_cavium(struct cpuinfo_mips *c, unsigned int cpu) 
}



const char *__cpu_name[NR_CPUS];

const char *__elf_platform;



__cpuinit void cpu_probe(void)

{