powerpc/cputable: Fix oprofile_cpu_type on power8
authorNishanth Aravamudan <nacc@linux.vnet.ibm.com>
Tue, 28 May 2013 10:39:50 +0000 (10:39 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Fri, 31 May 2013 22:29:25 +0000 (08:29 +1000)
Maynard informed me that neither the oprofile kernel module nor oprofile
userspace has been updated to support that "legacy" oprofile module
interface for power8, which is indicated by "ppc64/power8." This results
in no samples. The solution is to default to the "timer" type, instead.
The raw entry also should be updated, as "ppc64/ibm-compat-v1" indicates
to oprofile userspace to use "compatibility events" which are obsolete
in ISA 2.07.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/kernel/cputable.c

index c60bbec25c1fe98ca73581ef576d9785c2561a73..b8808bcb9e4e04ef16c63d7e3f0d0f63280722ea 100644 (file)
@@ -453,7 +453,7 @@ static struct cpu_spec __initdata cpu_specs[] = {
                .icache_bsize           = 128,
                .dcache_bsize           = 128,
                .oprofile_type          = PPC_OPROFILE_POWER4,
-               .oprofile_cpu_type      = "ppc64/ibm-compat-v1",
+               .oprofile_cpu_type      = 0,
                .cpu_setup              = __setup_cpu_power8,
                .cpu_restore            = __restore_cpu_power8,
                .platform               = "power8",
@@ -506,7 +506,7 @@ static struct cpu_spec __initdata cpu_specs[] = {
                .dcache_bsize           = 128,
                .num_pmcs               = 6,
                .pmc_type               = PPC_PMC_IBM,
-               .oprofile_cpu_type      = "ppc64/power8",
+               .oprofile_cpu_type      = 0,
                .oprofile_type          = PPC_OPROFILE_POWER4,
                .cpu_setup              = __setup_cpu_power8,
                .cpu_restore            = __restore_cpu_power8,