diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2010-03-23 00:02:43 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2010-04-12 17:26:19 +0100 |
| commit | 8d9df29db273ab9a330828f4f4f6669d293a730a (patch) | |
| tree | 7f5e9c87125d53fc2a512be150b01f6116918b3f /arch/mips/include | |
| parent | 9538ca636f2fa28ae1514327328e2869f0215981 (diff) | |
MIPS: Sibyte: Apply M3 workaround only on affected chip types and versions.
Previously it was unconditionally used on all Sibyte family SOCs. The
M3 bug has to be handled in the TLB exception handler which is extremly
performance sensitive, so this modification is expected to deliver around
2-3% performance improvment. This is important as required changes to the
M3 workaround will make it more costly.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include')
| -rw-r--r-- | arch/mips/include/asm/mach-sibyte/war.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/mips/include/asm/mach-sibyte/war.h b/arch/mips/include/asm/mach-sibyte/war.h index 7950ef4f032..743385d7b5f 100644 --- a/arch/mips/include/asm/mach-sibyte/war.h +++ b/arch/mips/include/asm/mach-sibyte/war.h @@ -16,7 +16,11 @@ #if defined(CONFIG_SB1_PASS_1_WORKAROUNDS) || \ defined(CONFIG_SB1_PASS_2_WORKAROUNDS) -#define BCM1250_M3_WAR 1 +#ifndef __ASSEMBLY__ +extern int sb1250_m3_workaround_needed(void); +#endif + +#define BCM1250_M3_WAR sb1250_m3_workaround_needed() #define SIBYTE_1956_WAR 1 #else |