[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20241025111348.3810-6-Dhananjay.Ugwekar@amd.com>
Date: Fri, 25 Oct 2024 11:13:43 +0000
From: Dhananjay Ugwekar <Dhananjay.Ugwekar@....com>
To: <peterz@...radead.org>, <mingo@...hat.com>, <rui.zhang@...el.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>
CC: <ananth.narayan@....com>, <gautham.shenoy@....com>,
<kprateek.nayak@....com>, <ravi.bangoria@....com>, <x86@...nel.org>,
<linux-perf-users@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
"Dhananjay Ugwekar" <Dhananjay.Ugwekar@....com>
Subject: [PATCH v6 05/10] perf/x86/rapl: Make rapl_model struct global
Prepare for the addition of RAPL core energy counter support.
As there will always be just one rapl_model variable on a system, make it
global, to make it easier to access it from any function.
No functional change.
Signed-off-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@....com>
---
arch/x86/events/rapl.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/arch/x86/events/rapl.c b/arch/x86/events/rapl.c
index 7387bca95018..447f62caa5f9 100644
--- a/arch/x86/events/rapl.c
+++ b/arch/x86/events/rapl.c
@@ -151,6 +151,7 @@ static struct rapl_pmus *rapl_pmus;
static unsigned int rapl_cntr_mask;
static u64 rapl_timer_ms;
static struct perf_msr *rapl_msrs;
+static struct rapl_model *rapl_model;
/*
* Helper function to get the correct topology id according to the
@@ -536,18 +537,18 @@ static struct perf_msr amd_rapl_msrs[] = {
[PERF_RAPL_PSYS] = { 0, &rapl_events_psys_group, NULL, false, 0 },
};
-static int rapl_check_hw_unit(struct rapl_model *rm)
+static int rapl_check_hw_unit(void)
{
u64 msr_rapl_power_unit_bits;
int i;
/* protect rdmsrl() to handle virtualization */
- if (rdmsrl_safe(rm->msr_power_unit, &msr_rapl_power_unit_bits))
+ if (rdmsrl_safe(rapl_model->msr_power_unit, &msr_rapl_power_unit_bits))
return -1;
for (i = 0; i < NR_RAPL_DOMAINS; i++)
rapl_hw_unit[i] = (msr_rapl_power_unit_bits >> 8) & 0x1FULL;
- switch (rm->unit_quirk) {
+ switch (rapl_model->unit_quirk) {
/*
* DRAM domain on HSW server and KNL has fixed energy unit which can be
* different than the unit from power unit MSR. See
@@ -792,21 +793,20 @@ MODULE_DEVICE_TABLE(x86cpu, rapl_model_match);
static int __init rapl_pmu_init(void)
{
const struct x86_cpu_id *id;
- struct rapl_model *rm;
int ret;
id = x86_match_cpu(rapl_model_match);
if (!id)
return -ENODEV;
- rm = (struct rapl_model *) id->driver_data;
+ rapl_model = (struct rapl_model *) id->driver_data;
- rapl_msrs = rm->rapl_msrs;
+ rapl_msrs = rapl_model->rapl_msrs;
rapl_cntr_mask = perf_msr_probe(rapl_msrs, PERF_RAPL_MAX,
- false, (void *) &rm->events);
+ false, (void *) &rapl_model->events);
- ret = rapl_check_hw_unit(rm);
+ ret = rapl_check_hw_unit();
if (ret)
return ret;
--
2.34.1
Powered by blists - more mailing lists