Author: alc
Date: Fri Sep 18 17:04:57 2009
New Revision: 197316
URL: http://svn.freebsd.org/changeset/base/197316
Log:
Add a new sysctl for reporting all of the supported page sizes.
Reviewed by: jhb
MFC after: 3 weeks
Modified:
head/sys/amd64/include/param.h
head/sys/arm/include/param.h
head/sys/i386/include/param.h
head/sys/ia64/include/param.h
head/sys/kern/kern_mib.c
head/sys/mips/include/param.h
head/sys/powerpc/include/param.h
head/sys/sparc64/include/param.h
head/sys/sun4v/include/param.h
head/sys/sys/systm.h
Modified: head/sys/amd64/include/param.h
==============================================================================
--- head/sys/amd64/include/param.h Fri Sep 18 15:39:09 2009
(r197315)
+++ head/sys/amd64/include/param.h Fri Sep 18 17:04:57 2009
(r197316)
@@ -108,6 +108,8 @@
#define NBPML4 (1ul<<PML4SHIFT)/* bytes/page map lev4 table */
#define PML4MASK (NBPML4-1)
+#define MAXPAGESIZES 3 /* maximum number of supported page
sizes */
+
#define IOPAGES 2 /* pages of i/o permission bitmap */
#ifndef KSTACK_PAGES
Modified: head/sys/arm/include/param.h
==============================================================================
--- head/sys/arm/include/param.h Fri Sep 18 15:39:09 2009
(r197315)
+++ head/sys/arm/include/param.h Fri Sep 18 17:04:57 2009
(r197316)
@@ -92,6 +92,8 @@
#define NBPDR (1 << PDR_SHIFT)
#define NPDEPG (1 << (32 - PDR_SHIFT))
+#define MAXPAGESIZES 1 /* maximum number of supported
page sizes */
+
#ifndef KSTACK_PAGES
#define KSTACK_PAGES 2
#endif /* !KSTACK_PAGES */
Modified: head/sys/i386/include/param.h
==============================================================================
--- head/sys/i386/include/param.h Fri Sep 18 15:39:09 2009
(r197315)
+++ head/sys/i386/include/param.h Fri Sep 18 17:04:57 2009
(r197316)
@@ -110,6 +110,8 @@
#define NBPDR (1<<PDRSHIFT) /* bytes/page dir */
#define PDRMASK (NBPDR-1)
+#define MAXPAGESIZES 2 /* maximum number of supported page
sizes */
+
#define IOPAGES 2 /* pages of i/o permission bitmap */
#ifndef KSTACK_PAGES
Modified: head/sys/ia64/include/param.h
==============================================================================
--- head/sys/ia64/include/param.h Fri Sep 18 15:39:09 2009
(r197315)
+++ head/sys/ia64/include/param.h Fri Sep 18 17:04:57 2009
(r197316)
@@ -89,6 +89,8 @@
#define PAGE_MASK (PAGE_SIZE-1)
#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
+#define MAXPAGESIZES 1 /* maximum number of supported
page sizes */
+
#ifndef KSTACK_PAGES
#define KSTACK_PAGES 4 /* pages of kernel stack */
#endif
Modified: head/sys/kern/kern_mib.c
==============================================================================
--- head/sys/kern/kern_mib.c Fri Sep 18 15:39:09 2009 (r197315)
+++ head/sys/kern/kern_mib.c Fri Sep 18 17:04:57 2009 (r197316)
@@ -204,6 +204,33 @@ SYSCTL_PROC(_hw, HW_USERMEM, usermem, CT
SYSCTL_ULONG(_hw, OID_AUTO, availpages, CTLFLAG_RD, &physmem, 0, "");
+u_long pagesizes[MAXPAGESIZES] = { PAGE_SIZE };
+
+static int
+sysctl_hw_pagesizes(SYSCTL_HANDLER_ARGS)
+{
+ int error;
+#ifdef SCTL_MASK32
+ int i;
+ uint32_t pagesizes32[MAXPAGESIZES];
+
+ if (req->flags & SCTL_MASK32) {
+ /*
+ * Recreate the "pagesizes" array with 32-bit elements.
Truncate
+ * any page size greater than UINT32_MAX to zero.
+ */
+ for (i = 0; i < MAXPAGESIZES; i++)
+ pagesizes32[i] = (uint32_t)pagesizes[i];
+
+ error = SYSCTL_OUT(req, pagesizes32, sizeof(pagesizes32));
+ } else
+#endif
+ error = SYSCTL_OUT(req, pagesizes, sizeof(pagesizes));
+ return (error);
+}
+SYSCTL_PROC(_hw, OID_AUTO, pagesizes, CTLTYPE_ULONG | CTLFLAG_RD,
+ NULL, 0, sysctl_hw_pagesizes, "LU", "Supported page sizes");
+
static char machine_arch[] = MACHINE_ARCH;
SYSCTL_STRING(_hw, HW_MACHINE_ARCH, machine_arch, CTLFLAG_RD,
machine_arch, 0, "System architecture");
Modified: head/sys/mips/include/param.h
==============================================================================
--- head/sys/mips/include/param.h Fri Sep 18 15:39:09 2009
(r197315)
+++ head/sys/mips/include/param.h Fri Sep 18 17:04:57 2009
(r197316)
@@ -115,6 +115,8 @@
#define SEGOFSET (NBSEG-1) /* byte offset into segment */
#define SEGSHIFT 22 /* LOG2(NBSEG) */
+#define MAXPAGESIZES 1 /* maximum number of supported
page sizes */
+
/* XXXimp: This has moved to vmparam.h */
/* Also, this differs from the mips2 definition, but likely is better */
/* since this means the kernel won't chew up TLBs when it is executing */
Modified: head/sys/powerpc/include/param.h
==============================================================================
--- head/sys/powerpc/include/param.h Fri Sep 18 15:39:09 2009
(r197315)
+++ head/sys/powerpc/include/param.h Fri Sep 18 17:04:57 2009
(r197316)
@@ -86,6 +86,8 @@
#define PAGE_MASK (PAGE_SIZE - 1)
#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
+#define MAXPAGESIZES 1 /* maximum number of supported
page sizes */
+
#ifndef KSTACK_PAGES
#define KSTACK_PAGES 4 /* includes pcb */
#endif
Modified: head/sys/sparc64/include/param.h
==============================================================================
--- head/sys/sparc64/include/param.h Fri Sep 18 15:39:09 2009
(r197315)
+++ head/sys/sparc64/include/param.h Fri Sep 18 17:04:57 2009
(r197316)
@@ -109,6 +109,8 @@
#define PAGE_SIZE_MAX PAGE_SIZE_4M
#define PAGE_MASK_MAX PAGE_MASK_4M
+#define MAXPAGESIZES 1 /* maximum number of supported
page sizes */
+
#ifndef KSTACK_PAGES
#define KSTACK_PAGES 4 /* pages of kernel stack (with pcb) */
#endif
Modified: head/sys/sun4v/include/param.h
==============================================================================
--- head/sys/sun4v/include/param.h Fri Sep 18 15:39:09 2009
(r197315)
+++ head/sys/sun4v/include/param.h Fri Sep 18 17:04:57 2009
(r197316)
@@ -104,6 +104,8 @@
#define PAGE_SIZE_MAX PAGE_SIZE_4M
#define PAGE_MASK_MAX PAGE_MASK_4M
+#define MAXPAGESIZES 1 /* maximum number of supported
page sizes */
+
#ifndef KSTACK_PAGES
#define KSTACK_PAGES 4 /* pages of kernel stack (with pcb) */
#endif
Modified: head/sys/sys/systm.h
==============================================================================
--- head/sys/sys/systm.h Fri Sep 18 15:39:09 2009 (r197315)
+++ head/sys/sys/systm.h Fri Sep 18 17:04:57 2009 (r197316)
@@ -54,6 +54,7 @@ extern int kstack_pages; /* number of ke
extern int nswap; /* size of swap space */
+extern u_long pagesizes[]; /* supported page sizes */
extern long physmem; /* physical memory */
extern long realmem; /* 'real' memory */
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