Commit 4c8c3c7f authored Mar 07, 2023 by Valentin Schneider Committed by Peter Zijlstra Mar 24, 2023

treewide: Trace IPIs sent via smp_send_reschedule()



To be able to trace invocations of smp_send_reschedule(), rename the
arch-specific definitions of it to arch_smp_send_reschedule() and wrap it
into an smp_send_reschedule() that contains a tracepoint.

Changes to include the declaration of the tracepoint were driven by the
following coccinelle script:

  @func_use@
  @@
  smp_send_reschedule(...);

  @include@
  @@
  #include <trace/events/ipi.h>

  @no_include depends on func_use && !include@
  @@
    #include <...>
  +
  + #include <trace/events/ipi.h>

[csky bits]
[riscv bits]
Signed-off-by: Valentin Schneider <vschneid@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Guo Ren <guoren@kernel.org>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Link: https://lore.kernel.org/r/20230307143558.294354-6-vschneid@redhat.com

parent 4468161a

arch/alpha/kernel/smp.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -562,7 +562,7 @@ handle_ipi(struct pt_regs *regs)
	}		}

	void		void
	smp_send_reschedule(int cpu)		arch_smp_send_reschedule(int cpu)
	{		{
	#ifdef DEBUG_IPI_MSG		#ifdef DEBUG_IPI_MSG
	if (cpu == hard_smp_processor_id())		if (cpu == hard_smp_processor_id())

arch/arc/kernel/smp.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -292,7 +292,7 @@ static void ipi_send_msg(const struct cpumask *callmap, enum ipi_msg_type msg)
	ipi_send_msg_one(cpu, msg);		ipi_send_msg_one(cpu, msg);
	}		}

	void smp_send_reschedule(int cpu)		void arch_smp_send_reschedule(int cpu)
	{		{
	ipi_send_msg_one(cpu, IPI_RESCHEDULE);		ipi_send_msg_one(cpu, IPI_RESCHEDULE);
	}		}

arch/arm/kernel/smp.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -746,7 +746,7 @@ void __init set_smp_ipi_range(int ipi_base, int n)
	ipi_setup(smp_processor_id());		ipi_setup(smp_processor_id());
	}		}

	void smp_send_reschedule(int cpu)		void arch_smp_send_reschedule(int cpu)
	{		{
	smp_cross_call(cpumask_of(cpu), IPI_RESCHEDULE);		smp_cross_call(cpumask_of(cpu), IPI_RESCHEDULE);
	}		}

arch/arm/mach-actions/platsmp.c

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -20,6 +20,8 @@
	#include <asm/smp_plat.h>		#include <asm/smp_plat.h>
	#include <asm/smp_scu.h>		#include <asm/smp_scu.h>

			#include <trace/events/ipi.h>

	#define OWL_CPU1_ADDR 0x50		#define OWL_CPU1_ADDR 0x50
	#define OWL_CPU1_FLAG 0x5c		#define OWL_CPU1_FLAG 0x5c

arch/arm64/kernel/smp.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -976,7 +976,7 @@ void __init set_smp_ipi_range(int ipi_base, int n)
	ipi_setup(smp_processor_id());		ipi_setup(smp_processor_id());
	}		}

	void smp_send_reschedule(int cpu)		void arch_smp_send_reschedule(int cpu)
	{		{
	smp_cross_call(cpumask_of(cpu), IPI_RESCHEDULE);		smp_cross_call(cpumask_of(cpu), IPI_RESCHEDULE);
	}		}