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perf annotate: Scan cpuid for s390 and save machine type 

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>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Link: http://lkml.kernel.org/r/20180213151419.80737-2-tmricht@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Thomas Richter 2018-02-13 16:14:17 +01:00 committed by Arnaldo Carvalho de Melo
parent eca0fa28cd
commit c59124fa59
1 changed files with 26 additions and 1 deletions
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27
tools/perf/arch/s390/annotate/instructions.c
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@ -23,12 +23,37 @@ static struct ins_ops *s390__associate_ins_ops(struct arch *arch, const char *na
return ops; 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) static int s390__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
{ {
int err = 0;
if (!arch->initialized) { if (!arch->initialized) {
arch->initialized = true; arch->initialized = true;
arch->associate_instruction_ops = s390__associate_ins_ops; arch->associate_instruction_ops = s390__associate_ins_ops;
if (cpuid)
err = s390__cpuid_parse(arch, cpuid);
} }
return 0; return err;
} }