Use membar_{producer,consumer}() to ensure proper access to the "ready"
flag.
This commit is contained in:
parent
e56dac4e35
commit
4869ce0a43
@ -1,4 +1,4 @@
|
||||
/* $NetBSD: kern_history.c,v 1.13 2017/01/10 00:50:57 pgoyette Exp $ */
|
||||
/* $NetBSD: kern_history.c,v 1.14 2017/01/10 22:08:14 pgoyette Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1997 Charles D. Cranor and Washington University.
|
||||
@ -33,7 +33,7 @@
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__KERNEL_RCSID(0, "$NetBSD: kern_history.c,v 1.13 2017/01/10 00:50:57 pgoyette Exp $");
|
||||
__KERNEL_RCSID(0, "$NetBSD: kern_history.c,v 1.14 2017/01/10 22:08:14 pgoyette Exp $");
|
||||
|
||||
#include "opt_ddb.h"
|
||||
#include "opt_kernhist.h"
|
||||
@ -43,6 +43,7 @@ __KERNEL_RCSID(0, "$NetBSD: kern_history.c,v 1.13 2017/01/10 00:50:57 pgoyette E
|
||||
#include "opt_biohist.h"
|
||||
#include "opt_sysctl.h"
|
||||
|
||||
#include <sys/atomic.h>
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/cpu.h>
|
||||
@ -289,6 +290,7 @@ sysctl_kernhist_new(struct kern_history *hist)
|
||||
struct kern_history *h;
|
||||
const struct sysctlnode *rnode = NULL;
|
||||
|
||||
membar_consumer();
|
||||
if (kernhist_sysctl_ready == 0)
|
||||
return;
|
||||
|
||||
@ -329,6 +331,7 @@ sysctl_kernhist_init(void)
|
||||
sysctl_hist_node = rnode->sysctl_num;
|
||||
|
||||
kernhist_sysctl_ready = 1;
|
||||
membar_producer();
|
||||
|
||||
sysctl_kernhist_new(NULL);
|
||||
}
|
||||
|
Loading…
x
Reference in New Issue
Block a user