linux-kernel - [PATCH v4 07/11] perf/x86/rapl: Add an argument to the cleanup and init functions

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Message-ID: <20240711102436.4432-8-Dhananjay.Ugwekar@amd.com>
Date: Thu, 11 Jul 2024 10:24:35 +0000
From: Dhananjay Ugwekar <Dhananjay.Ugwekar@....com>
To: <peterz@...radead.org>, <mingo@...hat.com>, <acme@...nel.org>,
	<namhyung@...nel.org>, <mark.rutland@....com>,
	<alexander.shishkin@...ux.intel.com>, <jolsa@...nel.org>,
	<irogers@...gle.com>, <adrian.hunter@...el.com>, <kan.liang@...ux.intel.com>,
	<tglx@...utronix.de>, <bp@...en8.de>, <dave.hansen@...ux.intel.com>,
	<x86@...nel.org>, <kees@...nel.org>, <gustavoars@...nel.org>,
	<rui.zhang@...el.com>, <oleksandr@...alenko.name>
CC: <linux-perf-users@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-hardening@...r.kernel.org>, <ananth.narayan@....com>,
	<gautham.shenoy@....com>, <kprateek.nayak@....com>, <ravi.bangoria@....com>,
	<sandipan.das@....com>, <linux-pm@...r.kernel.org>,
	<Dhananjay.Ugwekar@....com>
Subject: [PATCH v4 07/11] perf/x86/rapl: Add an argument to the cleanup and init functions

Prep for per-core RAPL PMU addition.

No functional change.

Signed-off-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@....com>
---
 arch/x86/events/rapl.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/arch/x86/events/rapl.c b/arch/x86/events/rapl.c
index 1d36565d0cb9..362e82284ccb 100644
--- a/arch/x86/events/rapl.c
+++ b/arch/x86/events/rapl.c
@@ -694,7 +694,7 @@ static void __init rapl_advertise(void)
 	}
 }
 
-static void cleanup_rapl_pmus(void)
+static void cleanup_rapl_pmus(struct rapl_pmus *rapl_pmus)
 {
 	int i;
 
@@ -712,9 +712,10 @@ static const struct attribute_group *rapl_attr_update[] = {
 	NULL,
 };
 
-static int __init init_rapl_pmus(void)
+static int __init init_rapl_pmus(struct rapl_pmus **rapl_pmus_ptr)
 {
 	int nr_rapl_pmu = topology_max_packages();
+	struct rapl_pmus *rapl_pmus;
 
 	if (!rapl_pmu_is_pkg_scope())
 		nr_rapl_pmu *= topology_max_dies_per_package();
@@ -738,6 +739,9 @@ static int __init init_rapl_pmus(void)
 	rapl_pmus->pmu.read		= rapl_pmu_event_read;
 	rapl_pmus->pmu.module		= THIS_MODULE;
 	rapl_pmus->pmu.capabilities	= PERF_PMU_CAP_NO_EXCLUDE;
+
+	*rapl_pmus_ptr = rapl_pmus;
+
 	return 0;
 }
 
@@ -879,7 +883,7 @@ static int __init rapl_pmu_init(void)
 	if (ret)
 		return ret;
 
-	ret = init_rapl_pmus();
+	ret = init_rapl_pmus(&rapl_pmus);
 	if (ret)
 		return ret;
 
@@ -903,7 +907,7 @@ static int __init rapl_pmu_init(void)
 	cpuhp_remove_state(CPUHP_AP_PERF_X86_RAPL_ONLINE);
 out:
 	pr_warn("Initialization failed (%d), disabled\n", ret);
-	cleanup_rapl_pmus();
+	cleanup_rapl_pmus(rapl_pmus);
 	return ret;
 }
 module_init(rapl_pmu_init);
@@ -912,6 +916,6 @@ static void __exit intel_rapl_exit(void)
 {
 	cpuhp_remove_state_nocalls(CPUHP_AP_PERF_X86_RAPL_ONLINE);
 	perf_pmu_unregister(&rapl_pmus->pmu);
-	cleanup_rapl_pmus();
+	cleanup_rapl_pmus(rapl_pmus);
 }
 module_exit(intel_rapl_exit);
-- 
2.34.1