powerpc/perf: init pmu from core-book3s

Currenty pmu driver file for each ppc64 generation processor
has a __init call in itself. Refactor the code by moving the
__init call to core-books.c. This also clean's up compat mode
pmu driver registration.

Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
[mpe: Use SPDX tag for license]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/perf/core-book3s.c

@@ -22,6 +22,10 @@
 #include <asm/ptrace.h>
 #include <asm/code-patching.h>
 
+#ifdef CONFIG_PPC64
+#include "internal.h"
+#endif
+
 #define BHRB_MAX_ENTRIES	32
 #define BHRB_TARGET		0x0000000000000002
 #define BHRB_PREDICTION		0x0000000000000001
@@ -2294,3 +2298,27 @@ int register_power_pmu(struct power_pmu *pmu)
 			  power_pmu_prepare_cpu, NULL);
 	return 0;
 }
+
+#ifdef CONFIG_PPC64
+static int __init init_ppc64_pmu(void)
+{
+	/* run through all the pmu drivers one at a time */
+	if (!init_power5_pmu())
+		return 0;
+	else if (!init_power5p_pmu())
+		return 0;
+	else if (!init_power6_pmu())
+		return 0;
+	else if (!init_power7_pmu())
+		return 0;
+	else if (!init_power8_pmu())
+		return 0;
+	else if (!init_power9_pmu())
+		return 0;
+	else if (!init_ppc970_pmu())
+		return 0;
+	else
+		return -ENODEV;
+}
+early_initcall(init_ppc64_pmu);
+#endif

arch/powerpc/perf/internal.h

@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Copyright 2019 Madhavan Srinivasan, IBM Corporation.
+
+extern int init_ppc970_pmu(void);
+extern int init_power5_pmu(void);
+extern int init_power5p_pmu(void);
+extern int init_power6_pmu(void);
+extern int init_power7_pmu(void);
+extern int init_power8_pmu(void);
+extern int init_power9_pmu(void);

arch/powerpc/perf/power5+-pmu.c

@@ -677,7 +677,7 @@ static struct power_pmu power5p_pmu = {
 	.cache_events		= &power5p_cache_events,
 };
 
-static int __init init_power5p_pmu(void)
+int init_power5p_pmu(void)
 {
 	if (!cur_cpu_spec->oprofile_cpu_type ||
 	    (strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power5+")
@@ -686,5 +686,3 @@ static int __init init_power5p_pmu(void)
 
 	return register_power_pmu(&power5p_pmu);
 }
-
-early_initcall(init_power5p_pmu);

arch/powerpc/perf/power5-pmu.c

@@ -618,13 +618,11 @@ static struct power_pmu power5_pmu = {
 	.flags			= PPMU_HAS_SSLOT,
 };
 
-static int __init init_power5_pmu(void)
+int init_power5_pmu(void)
 {
 	if (!cur_cpu_spec->oprofile_cpu_type ||
 	    strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power5"))
 		return -ENODEV;
 
 	return register_power_pmu(&power5_pmu);
 }
-
-early_initcall(init_power5_pmu);

arch/powerpc/perf/power6-pmu.c

@@ -540,13 +540,11 @@ static struct power_pmu power6_pmu = {
 	.cache_events		= &power6_cache_events,
 };
 
-static int __init init_power6_pmu(void)
+int init_power6_pmu(void)
 {
 	if (!cur_cpu_spec->oprofile_cpu_type ||
 	    strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power6"))
 		return -ENODEV;
 
 	return register_power_pmu(&power6_pmu);
 }
-
-early_initcall(init_power6_pmu);

arch/powerpc/perf/power7-pmu.c

@@ -445,7 +445,7 @@ static struct power_pmu power7_pmu = {
 	.cache_events		= &power7_cache_events,
 };
 
-static int __init init_power7_pmu(void)
+int init_power7_pmu(void)
 {
 	if (!cur_cpu_spec->oprofile_cpu_type ||
 	    strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power7"))
@@ -456,5 +456,3 @@ static int __init init_power7_pmu(void)
 
 	return register_power_pmu(&power7_pmu);
 }
-
-early_initcall(init_power7_pmu);

arch/powerpc/perf/power8-pmu.c

@@ -379,7 +379,7 @@ static struct power_pmu power8_pmu = {
 	.bhrb_nr		= 32,
 };
 
-static int __init init_power8_pmu(void)
+int init_power8_pmu(void)
 {
 	int rc;
 
@@ -399,4 +399,3 @@ static int __init init_power8_pmu(void)
 
 	return 0;
 }
-early_initcall(init_power8_pmu);

arch/powerpc/perf/power9-pmu.c

@@ -437,7 +437,7 @@ static struct power_pmu power9_pmu = {
 	.bhrb_nr		= 32,
 };
 
-static int __init init_power9_pmu(void)
+int init_power9_pmu(void)
 {
 	int rc = 0;
 	unsigned int pvr = mfspr(SPRN_PVR);
@@ -467,4 +467,3 @@ static int __init init_power9_pmu(void)
 
 	return 0;
 }
-early_initcall(init_power9_pmu);

arch/powerpc/perf/ppc970-pmu.c

@@ -490,7 +490,7 @@ static struct power_pmu ppc970_pmu = {
 	.flags			= PPMU_NO_SIPR | PPMU_NO_CONT_SAMPLING,
 };
 
-static int __init init_ppc970_pmu(void)
+int init_ppc970_pmu(void)
 {
 	if (!cur_cpu_spec->oprofile_cpu_type ||
 	    (strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/970")
@@ -499,5 +499,3 @@ static int __init init_ppc970_pmu(void)
 
 	return register_power_pmu(&ppc970_pmu);
 }
-
-early_initcall(init_ppc970_pmu);