From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Mike Gilbert <floppym@gentoo.org>,
Shuah Khan <skhan@linuxfoundation.org>,
Sasha Levin <sashal@kernel.org>,
linux-pm@vger.kernel.org
Subject: [PATCH AUTOSEL 4.4 02/12] cpupower: avoid multiple definition with gcc -fno-common
Date: Wed, 18 Mar 2020 16:56:38 -0400 [thread overview]
Message-ID: <20200318205648.17937-2-sashal@kernel.org> (raw)
In-Reply-To: <20200318205648.17937-1-sashal@kernel.org>
From: Mike Gilbert <floppym@gentoo.org>
[ Upstream commit 2de7fb60a4740135e03cf55c1982e393ccb87b6b ]
Building cpupower with -fno-common in CFLAGS results in errors due to
multiple definitions of the 'cpu_count' and 'start_time' variables.
./utils/idle_monitor/snb_idle.o:./utils/idle_monitor/cpupower-monitor.h:28:
multiple definition of `cpu_count';
./utils/idle_monitor/nhm_idle.o:./utils/idle_monitor/cpupower-monitor.h:28:
first defined here
...
./utils/idle_monitor/cpuidle_sysfs.o:./utils/idle_monitor/cpuidle_sysfs.c:22:
multiple definition of `start_time';
./utils/idle_monitor/amd_fam14h_idle.o:./utils/idle_monitor/amd_fam14h_idle.c:85:
first defined here
The -fno-common option will be enabled by default in GCC 10.
Bug: https://bugs.gentoo.org/707462
Signed-off-by: Mike Gilbert <floppym@gentoo.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/power/cpupower/utils/idle_monitor/amd_fam14h_idle.c | 2 +-
tools/power/cpupower/utils/idle_monitor/cpuidle_sysfs.c | 2 +-
tools/power/cpupower/utils/idle_monitor/cpupower-monitor.c | 2 ++
tools/power/cpupower/utils/idle_monitor/cpupower-monitor.h | 2 +-
4 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/tools/power/cpupower/utils/idle_monitor/amd_fam14h_idle.c b/tools/power/cpupower/utils/idle_monitor/amd_fam14h_idle.c
index 2116df9ad8325..c097a3748674f 100644
--- a/tools/power/cpupower/utils/idle_monitor/amd_fam14h_idle.c
+++ b/tools/power/cpupower/utils/idle_monitor/amd_fam14h_idle.c
@@ -83,7 +83,7 @@ static struct pci_access *pci_acc;
static struct pci_dev *amd_fam14h_pci_dev;
static int nbp1_entered;
-struct timespec start_time;
+static struct timespec start_time;
static unsigned long long timediff;
#ifdef DEBUG
diff --git a/tools/power/cpupower/utils/idle_monitor/cpuidle_sysfs.c b/tools/power/cpupower/utils/idle_monitor/cpuidle_sysfs.c
index bcd22a1a39708..86e9647e4e686 100644
--- a/tools/power/cpupower/utils/idle_monitor/cpuidle_sysfs.c
+++ b/tools/power/cpupower/utils/idle_monitor/cpuidle_sysfs.c
@@ -21,7 +21,7 @@ struct cpuidle_monitor cpuidle_sysfs_monitor;
static unsigned long long **previous_count;
static unsigned long long **current_count;
-struct timespec start_time;
+static struct timespec start_time;
static unsigned long long timediff;
static int cpuidle_get_count_percent(unsigned int id, double *percent,
diff --git a/tools/power/cpupower/utils/idle_monitor/cpupower-monitor.c b/tools/power/cpupower/utils/idle_monitor/cpupower-monitor.c
index 05f953f0f0a0c..80a21cb67d94f 100644
--- a/tools/power/cpupower/utils/idle_monitor/cpupower-monitor.c
+++ b/tools/power/cpupower/utils/idle_monitor/cpupower-monitor.c
@@ -29,6 +29,8 @@ struct cpuidle_monitor *all_monitors[] = {
0
};
+int cpu_count;
+
static struct cpuidle_monitor *monitors[MONITORS_MAX];
static unsigned int avail_monitors;
diff --git a/tools/power/cpupower/utils/idle_monitor/cpupower-monitor.h b/tools/power/cpupower/utils/idle_monitor/cpupower-monitor.h
index 9e43f3371fbc6..3558bbae2b5dc 100644
--- a/tools/power/cpupower/utils/idle_monitor/cpupower-monitor.h
+++ b/tools/power/cpupower/utils/idle_monitor/cpupower-monitor.h
@@ -18,7 +18,7 @@
#define CSTATE_NAME_LEN 5
#define CSTATE_DESC_LEN 60
-int cpu_count;
+extern int cpu_count;
/* Hard to define the right names ...: */
enum power_range_e {
--
2.20.1
parent reply other threads:[~2020-03-18 20:59 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <20200318205648.17937-1-sashal@kernel.org>]
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