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Date: Tue, 10 Aug 2021 12:52:01 -0000 From: "tip-bot2 for Sebastian Andrzej Siewior" <tip-bot2@...utronix.de> To: linux-tip-commits@...r.kernel.org Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>, Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org, linux-kernel@...r.kernel.org Subject: [tip: x86/cleanups] x86/microcode: Replace deprecated CPU-hotplug functions. The following commit has been merged into the x86/cleanups branch of tip: Commit-ID: 2089f34f8c5b91f7235023ec72e71e3247261ecc Gitweb: https://git.kernel.org/tip/2089f34f8c5b91f7235023ec72e71e3247261ecc Author: Sebastian Andrzej Siewior <bigeasy@...utronix.de> AuthorDate: Tue, 03 Aug 2021 16:15:51 +02:00 Committer: Thomas Gleixner <tglx@...utronix.de> CommitterDate: Tue, 10 Aug 2021 14:46:27 +02:00 x86/microcode: Replace deprecated CPU-hotplug functions. The functions get_online_cpus() and put_online_cpus() have been deprecated during the CPU hotplug rework. They map directly to cpus_read_lock() and cpus_read_unlock(). Replace deprecated CPU-hotplug functions with the official version. The behavior remains unchanged. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de> Signed-off-by: Thomas Gleixner <tglx@...utronix.de> Link: https://lore.kernel.org/r/20210803141621.780504-9-bigeasy@linutronix.de --- arch/x86/kernel/cpu/microcode/core.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c index 6a6318e..efb69be 100644 --- a/arch/x86/kernel/cpu/microcode/core.c +++ b/arch/x86/kernel/cpu/microcode/core.c @@ -55,7 +55,7 @@ LIST_HEAD(microcode_cache); * All non cpu-hotplug-callback call sites use: * * - microcode_mutex to synchronize with each other; - * - get/put_online_cpus() to synchronize with + * - cpus_read_lock/unlock() to synchronize with * the cpu-hotplug-callback call sites. * * We guarantee that only a single cpu is being @@ -431,7 +431,7 @@ static ssize_t microcode_write(struct file *file, const char __user *buf, return ret; } - get_online_cpus(); + cpus_read_lock(); mutex_lock(µcode_mutex); if (do_microcode_update(buf, len) == 0) @@ -441,7 +441,7 @@ static ssize_t microcode_write(struct file *file, const char __user *buf, perf_check_microcode(); mutex_unlock(µcode_mutex); - put_online_cpus(); + cpus_read_unlock(); return ret; } @@ -629,7 +629,7 @@ static ssize_t reload_store(struct device *dev, if (val != 1) return size; - get_online_cpus(); + cpus_read_lock(); ret = check_online_cpus(); if (ret) @@ -644,7 +644,7 @@ static ssize_t reload_store(struct device *dev, mutex_unlock(µcode_mutex); put: - put_online_cpus(); + cpus_read_unlock(); if (ret == 0) ret = size; @@ -853,14 +853,14 @@ static int __init microcode_init(void) if (IS_ERR(microcode_pdev)) return PTR_ERR(microcode_pdev); - get_online_cpus(); + cpus_read_lock(); mutex_lock(µcode_mutex); error = subsys_interface_register(&mc_cpu_interface); if (!error) perf_check_microcode(); mutex_unlock(µcode_mutex); - put_online_cpus(); + cpus_read_unlock(); if (error) goto out_pdev; @@ -892,13 +892,13 @@ static int __init microcode_init(void) &cpu_root_microcode_group); out_driver: - get_online_cpus(); + cpus_read_lock(); mutex_lock(µcode_mutex); subsys_interface_unregister(&mc_cpu_interface); mutex_unlock(µcode_mutex); - put_online_cpus(); + cpus_read_unlock(); out_pdev: platform_device_unregister(microcode_pdev);
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