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[PATCH] MIPS: Decode core number for R2 CPUs.

To: linux-mips@linux-mips.org, ralf@linux-mips.org
Subject: [PATCH] MIPS: Decode core number for R2 CPUs.
From: David Daney <ddaney@caviumnetworks.com>
Date: Mon, 26 Jul 2010 14:29:37 -0700
Cc: David Daney <ddaney@caviumnetworks.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org
The struct cpuinfo_mips.core field should be populated with the
physical core number.  For R2 CPUs, this is carried in the low 10 bits
of Ebase.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
---
 arch/mips/kernel/cpu-probe.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 9b66331..b1b304e 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -761,6 +761,9 @@ static void __cpuinit decode_configs(struct cpuinfo_mips *c)
                ok = decode_config4(c);
 
        mips_probe_watch_registers(c);
+
+       if (cpu_has_mips_r2)
+               c->core = read_c0_ebase() & 0x3ff;
 }
 
 static inline void cpu_probe_mips(struct cpuinfo_mips *c, unsigned int cpu)
-- 
1.7.1.1


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