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Subject[PATCH 2/4] perf annotate: Scan cpuid for s390 and save machine type
Date
Scan the cpuid string and extract the type number for later
use.

Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
---
tools/perf/arch/s390/annotate/instructions.c | 27 ++++++++++++++++++++++++++-
1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/tools/perf/arch/s390/annotate/instructions.c b/tools/perf/arch/s390/annotate/instructions.c
index 8c72b44444cb..01df9d8303e1 100644
--- a/tools/perf/arch/s390/annotate/instructions.c
+++ b/tools/perf/arch/s390/annotate/instructions.c
@@ -23,12 +23,37 @@ static struct ins_ops *s390__associate_ins_ops(struct arch *arch, const char *na
return ops;
}

+static int s390__cpuid_parse(struct arch *arch, char *cpuid)
+{
+ unsigned int family;
+ char model[16], model_c[16], cpumf_v[16], cpumf_a[16];
+ int ret;
+
+ /*
+ * cpuid string format:
+ * "IBM,family,model-capacity,model[,cpum_cf-version,cpum_cf-authorization]"
+ */
+ ret = sscanf(cpuid, "%*[^,],%u,%[^,],%[^,],%[^,],%s", &family, model_c,
+ model, cpumf_v, cpumf_a);
+ if (ret >= 2) {
+ arch->family = family;
+ arch->model = 0;
+ return 0;
+ }
+
+ return -1;
+}
+
static int s390__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
{
+ int err = 0;
+
if (!arch->initialized) {
arch->initialized = true;
arch->associate_instruction_ops = s390__associate_ins_ops;
+ if (cpuid)
+ err = s390__cpuid_parse(arch, cpuid);
}

- return 0;
+ return err;
}
--
2.14.3
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