git: 02ab915ae014 - main - lapic_init: Reduce LOOPS

The branch main has been updated by cperciva:

URL: https://cgit.FreeBSD.org/src/commit/?id=02ab915ae014a07da8243120d231919eb5633c95

commit 02ab915ae014a07da8243120d231919eb5633c95
Author:     Colin Percival <cperciva@FreeBSD.org>
AuthorDate: 2022-08-12 23:51:34 +0000
Commit:     Colin Percival <cperciva@FreeBSD.org>
CommitDate: 2022-08-13 22:28:09 +0000

    lapic_init: Reduce LOOPS
    
    While I'm here, instrument lapic_init with TSLOG so it shows up (or
    typically not, after this change) on flamecharts.
    
    Reviewed by:    kib
    Sponsored by:   https://www.patreon.com/cperciva
    Differential Revision:  https://reviews.freebsd.org/D36186
---
 sys/x86/x86/local_apic.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sys/x86/x86/local_apic.c b/sys/x86/x86/local_apic.c
index ec4f821f99ed..42a5a9fd4c8c 100644
--- a/sys/x86/x86/local_apic.c
+++ b/sys/x86/x86/local_apic.c
@@ -434,6 +434,8 @@ lapic_init(vm_paddr_t addr)
 	int i;
 	bool arat;
 
+	TSENTER();
+
 	/*
 	 * Enable x2APIC mode if possible. Map the local APIC
 	 * registers page.
@@ -531,7 +533,7 @@ lapic_init(vm_paddr_t addr)
 	}
 
 #ifdef SMP
-#define	LOOPS	100000
+#define	LOOPS	1000
 	/*
 	 * Calibrate the busy loop waiting for IPI ack in xAPIC mode.
 	 * lapic_ipi_wait_mult contains the number of iterations which
@@ -563,6 +565,8 @@ lapic_init(vm_paddr_t addr)
 	}
 #undef LOOPS
 #endif /* SMP */
+
+	TSEXIT();
 }
 
 /*