diff mbox series

[RFC,v2,02/11] RISC-V: Use common print prefix in smp.c

Message ID 20210618123851.1344518-3-anup.patel@wdc.com (mailing list archive)
State New, archived
Headers show
Series Linux RISC-V ACLINT Support | expand

Commit Message

Anup Patel June 18, 2021, 12:38 p.m. UTC
We add "#define pr_fmt()" in smp.c to use "riscv:" as common
print prefix for all pr_xyz() statements in this file.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
---
 arch/riscv/kernel/smp.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

Comments

Marc Zyngier July 26, 2021, 1:44 p.m. UTC | #1
On Fri, 18 Jun 2021 13:38:42 +0100,
Anup Patel <anup.patel@wdc.com> wrote:
> 
> We add "#define pr_fmt()" in smp.c to use "riscv:" as common
> print prefix for all pr_xyz() statements in this file.
> 
> Signed-off-by: Anup Patel <anup.patel@wdc.com>
> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
> ---
>  arch/riscv/kernel/smp.c | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/riscv/kernel/smp.c b/arch/riscv/kernel/smp.c
> index 547dc508f7d1..eea0c9d11d9f 100644
> --- a/arch/riscv/kernel/smp.c
> +++ b/arch/riscv/kernel/smp.c
> @@ -8,6 +8,7 @@
>   * Copyright (C) 2017 SiFive
>   */
>  
> +#define pr_fmt(fmt) "riscv: " fmt
>  #include <linux/cpu.h>
>  #include <linux/clockchips.h>
>  #include <linux/interrupt.h>
> @@ -114,7 +115,7 @@ static void send_ipi_mask(const struct cpumask *mask, enum ipi_message_type op)
>  	if (ipi_ops && ipi_ops->ipi_inject)
>  		ipi_ops->ipi_inject(mask);
>  	else
> -		pr_warn("SMP: IPI inject method not available\n");
> +		pr_warn("IPI inject method not available\n");
>  }
>  
>  static void send_ipi_single(int cpu, enum ipi_message_type op)
> @@ -126,7 +127,7 @@ static void send_ipi_single(int cpu, enum ipi_message_type op)
>  	if (ipi_ops && ipi_ops->ipi_inject)
>  		ipi_ops->ipi_inject(cpumask_of(cpu));
>  	else
> -		pr_warn("SMP: IPI inject method not available\n");
> +		pr_warn("IPI inject method not available\n");

"SMP:" made a lot more sense. I assume that the user knows that they
are using a RISC-V machine. On the other hand, seeing a "SMP:" prefix
for a message indicates the provenance of the message.

I honestly don't see the point in this change.

	M.
Anup Patel July 26, 2021, 3:22 p.m. UTC | #2
On Mon, Jul 26, 2021 at 7:14 PM Marc Zyngier <maz@kernel.org> wrote:
>
> On Fri, 18 Jun 2021 13:38:42 +0100,
> Anup Patel <anup.patel@wdc.com> wrote:
> >
> > We add "#define pr_fmt()" in smp.c to use "riscv:" as common
> > print prefix for all pr_xyz() statements in this file.
> >
> > Signed-off-by: Anup Patel <anup.patel@wdc.com>
> > Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
> > ---
> >  arch/riscv/kernel/smp.c | 9 +++++----
> >  1 file changed, 5 insertions(+), 4 deletions(-)
> >
> > diff --git a/arch/riscv/kernel/smp.c b/arch/riscv/kernel/smp.c
> > index 547dc508f7d1..eea0c9d11d9f 100644
> > --- a/arch/riscv/kernel/smp.c
> > +++ b/arch/riscv/kernel/smp.c
> > @@ -8,6 +8,7 @@
> >   * Copyright (C) 2017 SiFive
> >   */
> >
> > +#define pr_fmt(fmt) "riscv: " fmt
> >  #include <linux/cpu.h>
> >  #include <linux/clockchips.h>
> >  #include <linux/interrupt.h>
> > @@ -114,7 +115,7 @@ static void send_ipi_mask(const struct cpumask *mask, enum ipi_message_type op)
> >       if (ipi_ops && ipi_ops->ipi_inject)
> >               ipi_ops->ipi_inject(mask);
> >       else
> > -             pr_warn("SMP: IPI inject method not available\n");
> > +             pr_warn("IPI inject method not available\n");
> >  }
> >
> >  static void send_ipi_single(int cpu, enum ipi_message_type op)
> > @@ -126,7 +127,7 @@ static void send_ipi_single(int cpu, enum ipi_message_type op)
> >       if (ipi_ops && ipi_ops->ipi_inject)
> >               ipi_ops->ipi_inject(cpumask_of(cpu));
> >       else
> > -             pr_warn("SMP: IPI inject method not available\n");
> > +             pr_warn("IPI inject method not available\n");
>
> "SMP:" made a lot more sense. I assume that the user knows that they
> are using a RISC-V machine. On the other hand, seeing a "SMP:" prefix
> for a message indicates the provenance of the message.
>
> I honestly don't see the point in this change.

The intention was to distinguish arch specific prints from
generic kernel prints at boot-time because "SMP: " prefix
was not making it obvious that these are arch specific prints.

I am certainly fine dropping this patch as well.

Regards,
Anup

>
>         M.
>
> --
> Without deviation from the norm, progress is not possible.
diff mbox series

Patch

diff --git a/arch/riscv/kernel/smp.c b/arch/riscv/kernel/smp.c
index 547dc508f7d1..eea0c9d11d9f 100644
--- a/arch/riscv/kernel/smp.c
+++ b/arch/riscv/kernel/smp.c
@@ -8,6 +8,7 @@ 
  * Copyright (C) 2017 SiFive
  */
 
+#define pr_fmt(fmt) "riscv: " fmt
 #include <linux/cpu.h>
 #include <linux/clockchips.h>
 #include <linux/interrupt.h>
@@ -114,7 +115,7 @@  static void send_ipi_mask(const struct cpumask *mask, enum ipi_message_type op)
 	if (ipi_ops && ipi_ops->ipi_inject)
 		ipi_ops->ipi_inject(mask);
 	else
-		pr_warn("SMP: IPI inject method not available\n");
+		pr_warn("IPI inject method not available\n");
 }
 
 static void send_ipi_single(int cpu, enum ipi_message_type op)
@@ -126,7 +127,7 @@  static void send_ipi_single(int cpu, enum ipi_message_type op)
 	if (ipi_ops && ipi_ops->ipi_inject)
 		ipi_ops->ipi_inject(cpumask_of(cpu));
 	else
-		pr_warn("SMP: IPI inject method not available\n");
+		pr_warn("IPI inject method not available\n");
 }
 
 #ifdef CONFIG_IRQ_WORK
@@ -242,7 +243,7 @@  void smp_send_stop(void)
 		cpumask_clear_cpu(smp_processor_id(), &mask);
 
 		if (system_state <= SYSTEM_RUNNING)
-			pr_crit("SMP: stopping secondary CPUs\n");
+			pr_crit("stopping secondary CPUs\n");
 		send_ipi_mask(&mask, IPI_CPU_STOP);
 	}
 
@@ -252,7 +253,7 @@  void smp_send_stop(void)
 		udelay(1);
 
 	if (num_online_cpus() > 1)
-		pr_warn("SMP: failed to stop secondary CPUs %*pbl\n",
+		pr_warn("failed to stop secondary CPUs %*pbl\n",
 			   cpumask_pr_args(cpu_online_mask));
 }