perf tools: Support CPU id matching for x86 v2

Implement the code to match CPU types to mapfile types for x86 based on
CPUID. This extends an existing similar function, but changes it to use
the x86 mapfile cpu description.  This allows to resolve event lists
generated by jevents.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/1473978296-20712-6-git-send-email-sukadev@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/arch/x86/util/header.c b/tools/perf/arch/x86/util/header.c
index 146d12a1cec0a28c5b2c9f7c233ea60b1996b5e6..a74a48db26f5e59186636ce74c803a3c6b476dbc 100644 (file)
--- a/tools/perf/arch/x86/util/header.c
+++ b/tools/perf/arch/x86/util/header.c
@@ -19,8 +19,8 @@ cpuid(unsigned int op, unsigned int *a, unsigned int *b, unsigned int *c,
                        : "a" (op));
 }
 
-int
-get_cpuid(char *buffer, size_t sz)
+static int
+__get_cpuid(char *buffer, size_t sz, const char *fmt)
 {
        unsigned int a, b, c, d, lvl;
        int family = -1, model = -1, step = -1;
@@ -48,7 +48,7 @@ get_cpuid(char *buffer, size_t sz)
                if (family >= 0x6)
                        model += ((a >> 16) & 0xf) << 4;
        }
-       nb = scnprintf(buffer, sz, "%s,%u,%u,%u$", vendor, family, model, step);
+       nb = scnprintf(buffer, sz, fmt, vendor, family, model, step);
 
        /* look for end marker to ensure the entire data fit */
        if (strchr(buffer, '$')) {
@@ -57,3 +57,21 @@ get_cpuid(char *buffer, size_t sz)
        }
        return -1;
 }
+
+int
+get_cpuid(char *buffer, size_t sz)
+{
+       return __get_cpuid(buffer, sz, "%s,%u,%u,%u$");
+}
+
+char *
+get_cpuid_str(void)
+{
+       char *buf = malloc(128);
+
+       if (__get_cpuid(buf, 128, "%s-%u-%X$") < 0) {
+               free(buf);
+               return NULL;
+       }
+       return buf;
+}