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-rw-r--r--arch/powerpc/kernel/cputable.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index f7f3c215d06f..b936a1dd0a50 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -355,6 +355,7 @@ static struct cpu_spec __initdata cpu_specs[] = {
.icache_bsize = 128,
.dcache_bsize = 128,
.machine_check = machine_check_generic,
+ .oprofile_cpu_type = "ppc64/compat-power5+",
.platform = "power5+",
},
{ /* Power6 */
@@ -386,6 +387,7 @@ static struct cpu_spec __initdata cpu_specs[] = {
.icache_bsize = 128,
.dcache_bsize = 128,
.machine_check = machine_check_generic,
+ .oprofile_cpu_type = "ppc64/compat-power6",
.platform = "power6",
},
{ /* 2.06-compliant processor, i.e. Power7 "architected" mode */
@@ -397,6 +399,7 @@ static struct cpu_spec __initdata cpu_specs[] = {
.icache_bsize = 128,
.dcache_bsize = 128,
.machine_check = machine_check_generic,
+ .oprofile_cpu_type = "ppc64/compat-power7",
.platform = "power7",
},
{ /* Power7 */
@@ -1629,6 +1632,23 @@ struct cpu_spec * __init identify_cpu(unsigned long offset, unsigned int pvr)
t->cpu_setup = s->cpu_setup;
t->cpu_restore = s->cpu_restore;
t->platform = s->platform;
+ /*
+ * If we have passed through this logic once
+ * before and have pulled the default case
+ * because the real PVR was not found inside
+ * cpu_specs[], then we are possibly running in
+ * compatibility mode. In that case, let the
+ * oprofiler know which set of compatibility
+ * counters to pull from by making sure the
+ * oprofile_cpu_type string is set to that of
+ * compatibility mode. If the oprofile_cpu_type
+ * already has a value, then we are possibly
+ * overriding a real PVR with a logical one, and,
+ * in that case, keep the current value for
+ * oprofile_cpu_type.
+ */
+ if (t->oprofile_cpu_type == NULL)
+ t->oprofile_cpu_type = s->oprofile_cpu_type;
} else
*t = *s;
*PTRRELOC(&cur_cpu_spec) = &the_cpu_spec;