perf header: Pass "cpu" pmu name while printing caps

Avoid unnecessary conditional code to check if pmu name is NULL
or not by passing "cpu" pmu name to the printing function.

Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <rrichter@amd.com>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: like.xu.linux@gmail.com
Cc: x86@kernel.org
Link: https://lore.kernel.org/r/20220604044519.594-4-ravi.bangoria@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/header.c

@@ -2058,17 +2058,11 @@ static void print_per_cpu_pmu_caps(FILE *fp, int nr_caps, char *cpu_pmu_caps,
 	char *str, buf[128];
 
 	if (!nr_caps) {
-		if (!pmu_name)
-			fprintf(fp, "# cpu pmu capabilities: not available\n");
-		else
-			fprintf(fp, "# %s pmu capabilities: not available\n", pmu_name);
+		fprintf(fp, "# %s pmu capabilities: not available\n", pmu_name);
 		return;
 	}
 
-	if (!pmu_name)
-		scnprintf(buf, sizeof(buf), "# cpu pmu capabilities: ");
-	else
-		scnprintf(buf, sizeof(buf), "# %s pmu capabilities: ", pmu_name);
+	scnprintf(buf, sizeof(buf), "# %s pmu capabilities: ", pmu_name);
 
 	delimiter = buf;
 
@@ -2085,7 +2079,7 @@ static void print_per_cpu_pmu_caps(FILE *fp, int nr_caps, char *cpu_pmu_caps,
 static void print_cpu_pmu_caps(struct feat_fd *ff, FILE *fp)
 {
 	print_per_cpu_pmu_caps(fp, ff->ph->env.nr_cpu_pmu_caps,
-			       ff->ph->env.cpu_pmu_caps, NULL);
+			       ff->ph->env.cpu_pmu_caps, (char *)"cpu");
 }
 
 static void print_hybrid_cpu_pmu_caps(struct feat_fd *ff, FILE *fp)