powerpc: Add doorbell tracepoints (5b2a1529) · Commits · 戴 / test

arch/powerpc/include/asm/trace.h

+16 −0

Original line number	Diff line number	Diff line
		@@ -54,6 +54,22 @@ DEFINE_EVENT(ppc64_interrupt_class, timer_interrupt_exit,
		TP_ARGS(regs)
		);

		#ifdef CONFIG_PPC_DOORBELL
		DEFINE_EVENT(ppc64_interrupt_class, doorbell_entry,

		TP_PROTO(struct pt_regs *regs),

		TP_ARGS(regs)
		);

		DEFINE_EVENT(ppc64_interrupt_class, doorbell_exit,

		TP_PROTO(struct pt_regs *regs),

		TP_ARGS(regs)
		);
		#endif

		#ifdef CONFIG_PPC_PSERIES
		extern int hcall_tracepoint_regfunc(void);
		extern void hcall_tracepoint_unregfunc(void);

+3 −0

Original line number	Diff line number	Diff line
		@@ -18,6 +18,7 @@
		#include <asm/dbell.h>
		#include <asm/irq_regs.h>
		#include <asm/kvm_ppc.h>
		#include <asm/trace.h>

		#ifdef CONFIG_SMP

		@@ -81,6 +82,7 @@ void doorbell_exception(struct pt_regs *regs)
		struct pt_regs *old_regs = set_irq_regs(regs);

		irq_enter();
		trace_doorbell_entry(regs);

		ppc_msgsync();

		@@ -91,6 +93,7 @@ void doorbell_exception(struct pt_regs *regs)

		smp_ipi_demux_relaxed(); /* already performed the barrier */

		trace_doorbell_exit(regs);
		irq_exit();
		set_irq_regs(old_regs);
		}