linux-kernel - [PATCH 7/9] perf/x86: Use update attribute groups for extra format

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Message-Id: <20190512155518.21468-8-jolsa@kernel.org>
Date:   Sun, 12 May 2019 17:55:16 +0200
From:   Jiri Olsa <jolsa@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Andi Kleen <ak@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH 7/9] perf/x86: Use update attribute groups for extra format

Using the new pmu::update_attrs attribute group for
extra "format" directory.

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 arch/x86/events/intel/core.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index fff73623cf80..524b390a2c26 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -4408,6 +4408,12 @@ lbr_is_visible(struct kobject *kobj, struct attribute *attr, int i)
 	return x86_pmu.lbr_nr ? attr->mode : 0;
 }
 
+static umode_t
+exra_is_visible(struct kobject *kobj, struct attribute *attr, int i)
+{
+	return x86_pmu.version >= 2 ? attr->mode : 0;
+}
+
 static struct attribute_group group_events_td  = {
 	.name = "events",
 };
@@ -4433,12 +4439,18 @@ static struct attribute_group group_caps_lbr = {
 	.is_visible = lbr_is_visible,
 };
 
+static struct attribute_group group_format_extra = {
+	.name       = "format",
+	.is_visible = exra_is_visible,
+};
+
 static const struct attribute_group *attr_update[] = {
 	&group_events_td,
 	&group_events_mem,
 	&group_events_tsx,
 	&group_caps_gen,
 	&group_caps_lbr,
+	&group_format_extra,
 	NULL,
 };
 
@@ -5007,15 +5019,11 @@ __init int intel_pmu_init(void)
 
 	snprintf(pmu_name_str, sizeof(pmu_name_str), "%s", name);
 
-	if (version >= 2 && extra_attr) {
-		x86_pmu.format_attrs = merge_attr(intel_arch3_formats_attr,
-						  extra_attr);
-		WARN_ON(!x86_pmu.format_attrs);
-	}
 
 	group_events_td.attrs  = td_attr;
 	group_events_mem.attrs = mem_attr;
 	group_events_tsx.attrs = tsx_attr;
+	group_format_extra.attrs = extra_attr;
 
 	x86_pmu.attr_update = attr_update;
 
-- 
2.20.1