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From:   Zubin Mithra <zsm@chromium.org>
To:     peterz@infradead.org, mingo@redhat.com, acme@kernel.org,
        alexander.shishkin@linux.intel.com, x86@kernel.org
Cc:     linux-kernel@vger.kernel.org, groeck@chromium.org,
        keescook@chromium.org, zsm@chromium.org
Subject: [PATCH] perf/x86: Add __ro_after_init annotations
Date:   Fri, 10 Aug 2018 08:43:14 -0700
Message-Id: <20180810154314.96710-1-zsm@chromium.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

x86_pmu_{format,events,attr,caps}_group is written to in
init_hw_perf_events and not modified after. This makes them suitable
candidates for annotating as __ro_after_init.

Signed-off-by: Zubin Mithra <zsm@chromium.org>
---
 arch/x86/events/core.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c
index 5f4829f10129..88e5f67f5d4c 100644
--- a/arch/x86/events/core.c
+++ b/arch/x86/events/core.c
@@ -1584,7 +1584,7 @@ static void __init pmu_check_apic(void)
 
 }
 
-static struct attribute_group x86_pmu_format_group = {
+static struct attribute_group x86_pmu_format_group __ro_after_init = {
 	.name = "format",
 	.attrs = NULL,
 };
@@ -1715,7 +1715,7 @@ static struct attribute *events_attr[] = {
 	NULL,
 };
 
-static struct attribute_group x86_pmu_events_group = {
+static struct attribute_group x86_pmu_events_group __ro_after_init = {
 	.name = "events",
 	.attrs = events_attr,
 };
@@ -2230,7 +2230,7 @@ static struct attribute *x86_pmu_attrs[] = {
 	NULL,
 };
 
-static struct attribute_group x86_pmu_attr_group = {
+static struct attribute_group x86_pmu_attr_group __ro_after_init = {
 	.attrs = x86_pmu_attrs,
 };
 
@@ -2248,7 +2248,7 @@ static struct attribute *x86_pmu_caps_attrs[] = {
 	NULL
 };
 
-static struct attribute_group x86_pmu_caps_group = {
+static struct attribute_group x86_pmu_caps_group __ro_after_init = {
 	.name = "caps",
 	.attrs = x86_pmu_caps_attrs,
 };
-- 
2.18.0.597.ga71716f1ad-goog