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Date: Tue, 15 Sep 2015 10:22:27 +0800
From: Barry Song <baohua@...nel.org>
To: Stephen Boyd <sboyd@...eaurora.org>
Cc: "arm@...nel.org" <arm@...nel.org>,
LKML <linux-kernel@...r.kernel.org>,
linux-arm-msm@...r.kernel.org,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
Tony Lindgren <tony@...mide.com>,
Andy Gross <agross@...eaurora.org>,
Viresh Kumar <vireshk@...nel.org>,
Shiraz Hashim <shiraz.linux.kernel@...il.com>,
Stephen Warren <swarren@...dotorg.org>,
Thierry Reding <thierry.reding@...il.com>,
Alexandre Courbot <gnurou@...il.com>,
Linus Walleij <linus.walleij@...aro.org>,
Sudeep Holla <sudeep.holla@....com>,
Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
Will Deacon <will.deacon@....com>,
Mark Rutland <mark.rutland@....com>,
linux-omap <linux-omap@...r.kernel.org>, spear-devel@...t.st.com,
linux-tegra@...r.kernel.org
Subject: Re: [PATCH] ARM: Remove __ref on hotplug cpu die path
2015-09-15 8:23 GMT+08:00 Stephen Boyd <sboyd@...eaurora.org>:
> Now that __cpuinit has been removed, the __ref markings on these
> functions are useless. Remove them. This also reduces the size of
> the multi_v7_defconfig image:
>
> $ size before after
> text data bss dec hex filename
> 12683578 1470996 348904 14503478 dd4e36 before
> 12683274 1470996 348904 14503174 dd4d06 after
>
> presumably because now we don't have to jump to code in the
> .ref.text section and/or the noinline marking is removed.
>
> Cc: Tony Lindgren <tony@...mide.com>
> Cc: Barry Song <baohua@...nel.org>
> Cc: Andy Gross <agross@...eaurora.org>
> Cc: Viresh Kumar <vireshk@...nel.org>
> Cc: Shiraz Hashim <shiraz.linux.kernel@...il.com>
> Cc: Stephen Warren <swarren@...dotorg.org>
> Cc: Thierry Reding <thierry.reding@...il.com>
> Cc: Alexandre Courbot <gnurou@...il.com>
> Cc: Linus Walleij <linus.walleij@...aro.org>
> Cc: Sudeep Holla <sudeep.holla@....com>
> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
> Cc: Will Deacon <will.deacon@....com>
> Cc: Mark Rutland <mark.rutland@....com>
> Cc: <linux-omap@...r.kernel.org>
> Cc: <linux-arm-msm@...r.kernel.org>
> Cc: <spear-devel@...t.st.com>
> Cc: <linux-tegra@...r.kernel.org>
> Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>
Acked-by: Barry Song <baohua@...nel.org>
> ---
>
> This patch can be broken up into per-SoC if desired.
>
> arch/arm/kernel/psci_smp.c | 4 ++--
> arch/arm/mach-omap2/omap-hotplug.c | 2 +-
> arch/arm/mach-omap2/omap-wakeupgen.c | 2 +-
> arch/arm/mach-prima2/hotplug.c | 2 +-
> arch/arm/mach-qcom/platsmp.c | 2 +-
> arch/arm/mach-realview/hotplug.c | 2 +-
> arch/arm/mach-spear/hotplug.c | 2 +-
> arch/arm/mach-tegra/hotplug.c | 2 +-
> arch/arm/mach-ux500/hotplug.c | 2 +-
> arch/arm/mach-vexpress/hotplug.c | 2 +-
> 10 files changed, 11 insertions(+), 11 deletions(-)
>
> diff --git a/arch/arm/kernel/psci_smp.c b/arch/arm/kernel/psci_smp.c
> index 61c04b02faeb..9d479b2ea40d 100644
> --- a/arch/arm/kernel/psci_smp.c
> +++ b/arch/arm/kernel/psci_smp.c
> @@ -71,7 +71,7 @@ int psci_cpu_disable(unsigned int cpu)
> return 0;
> }
>
> -void __ref psci_cpu_die(unsigned int cpu)
> +void psci_cpu_die(unsigned int cpu)
> {
> u32 state = PSCI_POWER_STATE_TYPE_POWER_DOWN <<
> PSCI_0_2_POWER_STATE_TYPE_SHIFT;
> @@ -83,7 +83,7 @@ void __ref psci_cpu_die(unsigned int cpu)
> panic("psci: cpu %d failed to shutdown\n", cpu);
> }
>
> -int __ref psci_cpu_kill(unsigned int cpu)
> +int psci_cpu_kill(unsigned int cpu)
> {
> int err, i;
>
> diff --git a/arch/arm/mach-omap2/omap-hotplug.c b/arch/arm/mach-omap2/omap-hotplug.c
> index 971791fe9a3f..593fec753b28 100644
> --- a/arch/arm/mach-omap2/omap-hotplug.c
> +++ b/arch/arm/mach-omap2/omap-hotplug.c
> @@ -27,7 +27,7 @@
> * platform-specific code to shutdown a CPU
> * Called with IRQs disabled
> */
> -void __ref omap4_cpu_die(unsigned int cpu)
> +void omap4_cpu_die(unsigned int cpu)
> {
> unsigned int boot_cpu = 0;
> void __iomem *base = omap_get_wakeupgen_base();
> diff --git a/arch/arm/mach-omap2/omap-wakeupgen.c b/arch/arm/mach-omap2/omap-wakeupgen.c
> index e1d2e991d17a..d9b317706e63 100644
> --- a/arch/arm/mach-omap2/omap-wakeupgen.c
> +++ b/arch/arm/mach-omap2/omap-wakeupgen.c
> @@ -330,7 +330,7 @@ static int irq_cpu_hotplug_notify(struct notifier_block *self,
> return NOTIFY_OK;
> }
>
> -static struct notifier_block __refdata irq_hotplug_notifier = {
> +static struct notifier_block irq_hotplug_notifier = {
> .notifier_call = irq_cpu_hotplug_notify,
> };
>
> diff --git a/arch/arm/mach-prima2/hotplug.c b/arch/arm/mach-prima2/hotplug.c
> index 0ab2f8bae28e..a728c78b996f 100644
> --- a/arch/arm/mach-prima2/hotplug.c
> +++ b/arch/arm/mach-prima2/hotplug.c
> @@ -32,7 +32,7 @@ static inline void platform_do_lowpower(unsigned int cpu)
> *
> * Called with IRQs disabled
> */
> -void __ref sirfsoc_cpu_die(unsigned int cpu)
> +void sirfsoc_cpu_die(unsigned int cpu)
> {
> platform_do_lowpower(cpu);
> }
> diff --git a/arch/arm/mach-qcom/platsmp.c b/arch/arm/mach-qcom/platsmp.c
> index 5cde63a64b34..9b00123a315d 100644
> --- a/arch/arm/mach-qcom/platsmp.c
> +++ b/arch/arm/mach-qcom/platsmp.c
> @@ -49,7 +49,7 @@ extern void secondary_startup_arm(void);
> static DEFINE_SPINLOCK(boot_lock);
>
> #ifdef CONFIG_HOTPLUG_CPU
> -static void __ref qcom_cpu_die(unsigned int cpu)
> +static void qcom_cpu_die(unsigned int cpu)
> {
> wfi();
> }
> diff --git a/arch/arm/mach-realview/hotplug.c b/arch/arm/mach-realview/hotplug.c
> index ac22dd41b135..968e2d1964f6 100644
> --- a/arch/arm/mach-realview/hotplug.c
> +++ b/arch/arm/mach-realview/hotplug.c
> @@ -90,7 +90,7 @@ static inline void platform_do_lowpower(unsigned int cpu, int *spurious)
> *
> * Called with IRQs disabled
> */
> -void __ref realview_cpu_die(unsigned int cpu)
> +void realview_cpu_die(unsigned int cpu)
> {
> int spurious = 0;
>
> diff --git a/arch/arm/mach-spear/hotplug.c b/arch/arm/mach-spear/hotplug.c
> index d97749c642ce..12edd1cf8a12 100644
> --- a/arch/arm/mach-spear/hotplug.c
> +++ b/arch/arm/mach-spear/hotplug.c
> @@ -80,7 +80,7 @@ static inline void spear13xx_do_lowpower(unsigned int cpu, int *spurious)
> *
> * Called with IRQs disabled
> */
> -void __ref spear13xx_cpu_die(unsigned int cpu)
> +void spear13xx_cpu_die(unsigned int cpu)
> {
> int spurious = 0;
>
> diff --git a/arch/arm/mach-tegra/hotplug.c b/arch/arm/mach-tegra/hotplug.c
> index 6fc71f1534b0..1b129899a277 100644
> --- a/arch/arm/mach-tegra/hotplug.c
> +++ b/arch/arm/mach-tegra/hotplug.c
> @@ -37,7 +37,7 @@ int tegra_cpu_kill(unsigned cpu)
> *
> * Called with IRQs disabled
> */
> -void __ref tegra_cpu_die(unsigned int cpu)
> +void tegra_cpu_die(unsigned int cpu)
> {
> if (!tegra_hotplug_shutdown) {
> WARN(1, "hotplug is not yet initialized\n");
> diff --git a/arch/arm/mach-ux500/hotplug.c b/arch/arm/mach-ux500/hotplug.c
> index 2bc00b085e38..1cbed0331fd3 100644
> --- a/arch/arm/mach-ux500/hotplug.c
> +++ b/arch/arm/mach-ux500/hotplug.c
> @@ -21,7 +21,7 @@
> *
> * Called with IRQs disabled
> */
> -void __ref ux500_cpu_die(unsigned int cpu)
> +void ux500_cpu_die(unsigned int cpu)
> {
> /* directly enter low power state, skipping secure registers */
> for (;;) {
> diff --git a/arch/arm/mach-vexpress/hotplug.c b/arch/arm/mach-vexpress/hotplug.c
> index f0ce6b8f5e71..f2fafc10a91d 100644
> --- a/arch/arm/mach-vexpress/hotplug.c
> +++ b/arch/arm/mach-vexpress/hotplug.c
> @@ -85,7 +85,7 @@ static inline void platform_do_lowpower(unsigned int cpu, int *spurious)
> *
> * Called with IRQs disabled
> */
> -void __ref vexpress_cpu_die(unsigned int cpu)
> +void vexpress_cpu_die(unsigned int cpu)
> {
> int spurious = 0;
>
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
--
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