[PATCH] Altix I/O code cleanup

[PATCH] Altix I/O code cleanup

[Patrick Gefre]

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This is my first patch for this - more to come ....



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# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
#	           ChangeSet	1.1272  -> 1.1273 
#	include/asm-ia64/sn/pci/pcibr_private.h	1.10    -> 1.11   
#	arch/ia64/sn/io/sn2/ml_iograph.c	1.5     -> 1.6    
#	arch/ia64/sn/io/sn2/xtalk.c	1.2     -> 1.3    
#	include/asm-ia64/sn/sgi.h	1.7     -> 1.8    
#	arch/ia64/sn/io/sn2/klconflib.c	1.3     -> 1.4    
#	include/asm-ia64/sn/arc/hinv.h	1.4     ->         (deleted)      
#	arch/ia64/sn/io/machvec/pci.c	1.11    -> 1.12   
#	arch/ia64/sn/io/machvec/pci_dma.c	1.16    -> 1.17   
#	include/asm-ia64/sn/klconfig.h	1.6     -> 1.7    
#	arch/ia64/sn/io/io.c	1.8     -> 1.9    
#	arch/ia64/sn/io/sn2/pcibr/pcibr_slot.c	1.9     -> 1.10   
#	arch/ia64/sn/io/platform_init/irix_io_init.c	1.2     -> 1.3    
#	arch/ia64/sn/io/sgi_if.c	1.6     -> 1.7    
#	arch/ia64/sn/io/sn2/shub_intr.c	1.4     -> 1.5    
#	include/asm-ia64/sn/ioerror_handling.h	1.5     -> 1.6    
#	arch/ia64/sn/io/sn2/shub.c	1.6     -> 1.7    
#	arch/ia64/sn/io/hwgfs/hcl.c	1.7     -> 1.8    
#	arch/ia64/sn/io/hwgfs/labelcl.c	1.1     -> 1.2    
#	arch/ia64/sn/io/sn2/geo_op.c	1.1     -> 1.2    
#	arch/ia64/sn/io/sn2/klgraph.c	1.3     -> 1.4    
#	arch/ia64/sn/io/drivers/ioconfig_bus.c	1.6     -> 1.7    
#	arch/ia64/sn/io/sn2/bte_error.c	1.3     -> 1.4    
#	arch/ia64/sn/io/machvec/pci_bus_cvlink.c	1.13    -> 1.14   
#	include/asm-ia64/sn/arc/types.h	1.5     ->         (deleted)      
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 03/10/10	pfg@attica.americas.sgi.com	1.1273
# Some general code clean up - nothing very interesting
# --------------------------------------------
#
diff -Nru a/arch/ia64/sn/io/drivers/ioconfig_bus.c b/arch/ia64/sn/io/drivers/ioconfig_bus.c
--- a/arch/ia64/sn/io/drivers/ioconfig_bus.c	Fri Oct 10 16:40:38 2003
+++ b/arch/ia64/sn/io/drivers/ioconfig_bus.c	Fri Oct 10 16:40:38 2003
@@ -19,7 +19,6 @@
 #include <asm/sn/sgi.h>
 #include <asm/io.h>
 #include <asm/sn/iograph.h>
-#include <asm/sn/invent.h>
 #include <asm/sn/hcl.h>
 #include <asm/sn/labelcl.h>
 #include <asm/sn/sn_sal.h>
diff -Nru a/arch/ia64/sn/io/hwgfs/hcl.c b/arch/ia64/sn/io/hwgfs/hcl.c
--- a/arch/ia64/sn/io/hwgfs/hcl.c	Fri Oct 10 16:40:38 2003
+++ b/arch/ia64/sn/io/hwgfs/hcl.c	Fri Oct 10 16:40:38 2003
@@ -28,11 +28,6 @@
 #include <asm/sn/labelcl.h>
 #include <asm/sn/simulator.h>
 
-#define HCL_NAME "SGI-HWGRAPH COMPATIBILITY DRIVER"
-#define HCL_TEMP_NAME "HCL_TEMP_NAME_USED_FOR_HWGRAPH_VERTEX_CREATE"
-#define HCL_TEMP_NAME_LEN 44 
-#define HCL_VERSION "1.0"
-
 #define vertex_hdl_t hwgfs_handle_t
 vertex_hdl_t hwgraph_root;
 vertex_hdl_t linux_busnum;
@@ -40,26 +35,6 @@
 extern void pci_bus_cvlink_init(void);
 
 /*
- * Debug flag definition.
- */
-#define OPTION_NONE             0x00
-#define HCL_DEBUG_NONE 0x00000
-#define HCL_DEBUG_ALL  0x0ffff
-#if defined(CONFIG_HCL_DEBUG)
-static unsigned int hcl_debug_init __initdata = HCL_DEBUG_NONE;
-#endif
-static unsigned int hcl_debug = HCL_DEBUG_NONE;
-#if defined(CONFIG_HCL_DEBUG) && !defined(MODULE)
-static unsigned int boot_options = OPTION_NONE;
-#endif
-
-invplace_t invplace_none = {
-	GRAPH_VERTEX_NONE,
-	GRAPH_VERTEX_PLACE_NONE,
-	NULL
-};
-
-/*
  * init_hcl() - Boot time initialization.
  *
  */
@@ -403,39 +378,6 @@
 	return(0);
 }
 
-#if 0
-/*
- * hwgraph_edge_add - This routines has changed from the original conext.
- * All it does now is to create a symbolic link from "from" to "to".
- */
-/* ARGSUSED */
-int
-hwgraph_edge_add(vertex_hdl_t from, vertex_hdl_t to, char *name)
-{
-
-	char *path, *link;
-	vertex_hdl_t handle = NULL;
-	int rv, i;
-
-	handle = hwgfs_find_handle(from, name, 0, 0, 0, 1);
-	if (handle) {
-		return(0);
-	}
-
-	path = kmalloc(1024, GFP_KERNEL);
-	memset(path, 0x0, 1024);
-	link = kmalloc(1024, GFP_KERNEL);
-	memset(path, 0x0, 1024);
-	i = hwgfs_generate_path (to, link, 1024);
-	rv = hwgfs_mk_symlink (from, (const char *)name, 
-			       DEVFS_FL_DEFAULT, link,
-			       &handle, NULL);
-	return(0);
-
-
-}
-#endif
-
 int
 hwgraph_edge_add(vertex_hdl_t from, vertex_hdl_t to, char *name)
 {
@@ -718,24 +660,6 @@
 		    	0,		/* minor */
 		    	0,		/* char | block */
 		    	1));		/* traverse symlinks */
-}
-
-/*
- * hwgraph_inventory_remove - Removes an inventory entry.
- *
- *	Remove an inventory item associated with a vertex.   It is the caller's
- *	responsibility to make sure that there are no races between removing
- *	inventory from a vertex and simultaneously removing that vertex.
-*/
-int
-hwgraph_inventory_remove(	vertex_hdl_t de,
-				int class,
-				int type,
-				major_t controller,
-				minor_t unit,
-				int state)
-{
-	return(0); /* Just a Stub for IRIX code. */
 }
 
 /*
diff -Nru a/arch/ia64/sn/io/hwgfs/labelcl.c b/arch/ia64/sn/io/hwgfs/labelcl.c
--- a/arch/ia64/sn/io/hwgfs/labelcl.c	Fri Oct 10 16:40:38 2003
+++ b/arch/ia64/sn/io/hwgfs/labelcl.c	Fri Oct 10 16:40:38 2003
@@ -16,7 +16,6 @@
 #include <linux/smp_lock.h>
 #include <asm/sn/sgi.h>
 #include <asm/sn/hwgfs.h>
-#include <asm/sn/invent.h>
 #include <asm/sn/hcl.h>
 #include <asm/sn/labelcl.h>
 
diff -Nru a/arch/ia64/sn/io/io.c b/arch/ia64/sn/io/io.c
--- a/arch/ia64/sn/io/io.c	Fri Oct 10 16:40:38 2003
+++ b/arch/ia64/sn/io/io.c	Fri Oct 10 16:40:38 2003
@@ -20,7 +20,6 @@
 #include <asm/sn/io.h>
 #include <asm/sn/sn_private.h>
 #include <asm/sn/addrs.h>
-#include <asm/sn/invent.h>
 #include <asm/sn/hcl.h>
 #include <asm/sn/hcl_util.h>
 #include <asm/sn/intr.h>
@@ -29,7 +28,6 @@
 #include <asm/sn/sn_cpuid.h>
 
 extern xtalk_provider_t hub_provider;
-extern void hub_intr_init(vertex_hdl_t hubv);
 
 static int force_fire_and_forget = 1;
 static int ignore_conveyor_override;
@@ -601,7 +599,6 @@
 hub_provider_startup(vertex_hdl_t hubv)
 {
 	hub_pio_init(hubv);
-	hub_intr_init(hubv);
 }
 
 /*
diff -Nru a/arch/ia64/sn/io/machvec/pci.c b/arch/ia64/sn/io/machvec/pci.c
--- a/arch/ia64/sn/io/machvec/pci.c	Fri Oct 10 16:40:38 2003
+++ b/arch/ia64/sn/io/machvec/pci.c	Fri Oct 10 16:40:38 2003
@@ -22,7 +22,6 @@
 #include <asm/sn/xtalk/xwidget.h>
 #include <asm/sn/sn_private.h>
 #include <asm/sn/addrs.h>
-#include <asm/sn/invent.h>
 #include <asm/sn/hcl.h>
 #include <asm/sn/hcl_util.h>
 #include <asm/sn/pci/pciio.h>
diff -Nru a/arch/ia64/sn/io/machvec/pci_bus_cvlink.c b/arch/ia64/sn/io/machvec/pci_bus_cvlink.c
--- a/arch/ia64/sn/io/machvec/pci_bus_cvlink.c	Fri Oct 10 16:40:38 2003
+++ b/arch/ia64/sn/io/machvec/pci_bus_cvlink.c	Fri Oct 10 16:40:38 2003
@@ -23,7 +23,6 @@
 #include <asm/sn/xtalk/xwidget.h>
 #include <asm/sn/sn_private.h>
 #include <asm/sn/addrs.h>
-#include <asm/sn/invent.h>
 #include <asm/sn/hcl.h>
 #include <asm/sn/hcl_util.h>
 #include <asm/sn/intr.h>
@@ -437,11 +436,11 @@
 #ifdef CONFIG_PROC_FS
 		extern void register_sn_procfs(void);
 #endif
-		extern void irix_io_init(void);
+		extern void sn_io_init(void);
 		extern void sn_init_cpei_timer(void);
 		
 		init_hcl();
-		irix_io_init();
+		sn_io_init();
 		
 		for (cnode = 0; cnode < numnodes; cnode++) {
 			extern void intr_init_vecblk(cnodeid_t);
diff -Nru a/arch/ia64/sn/io/machvec/pci_dma.c b/arch/ia64/sn/io/machvec/pci_dma.c
--- a/arch/ia64/sn/io/machvec/pci_dma.c	Fri Oct 10 16:40:38 2003
+++ b/arch/ia64/sn/io/machvec/pci_dma.c	Fri Oct 10 16:40:38 2003
@@ -29,7 +29,6 @@
 #include <asm/sn/types.h>
 #include <asm/sn/alenlist.h>
 #include <asm/sn/pci/pci_bus_cvlink.h>
-#include <asm/sn/nag.h>
 
 /*
  * For ATE allocations
diff -Nru a/arch/ia64/sn/io/platform_init/irix_io_init.c b/arch/ia64/sn/io/platform_init/irix_io_init.c
--- a/arch/ia64/sn/io/platform_init/irix_io_init.c	Fri Oct 10 16:40:38 2003
+++ b/arch/ia64/sn/io/platform_init/irix_io_init.c	Fri Oct 10 16:40:38 2003
@@ -27,13 +27,6 @@
 extern int pci_bus_to_hcl_cvlink(void);
 extern void mlreset(void);
 
-/* #define DEBUG_IO_INIT 1 */
-#ifdef DEBUG_IO_INIT
-#define DBG(x...) printk(x)
-#else
-#define DBG(x...)
-#endif /* DEBUG_IO_INIT */
-
 /*
  * This routine is responsible for the setup of all the IRIX hwgraph style
  * stuff that's been pulled into linux.  It's called by sn_pci_find_bios which
@@ -45,12 +38,12 @@
  */
 
 void
-irix_io_init(void)
+sn_io_init(void)
 {
 	cnodeid_t cnode;
 
 	/*
-	 * This is the Master CPU.  Emulate mlsetup and main.c in Irix.
+	 * This is the Master CPU.
 	 */
 	mlreset();
 
diff -Nru a/arch/ia64/sn/io/sgi_if.c b/arch/ia64/sn/io/sgi_if.c
--- a/arch/ia64/sn/io/sgi_if.c	Fri Oct 10 16:40:38 2003
+++ b/arch/ia64/sn/io/sgi_if.c	Fri Oct 10 16:40:38 2003
@@ -12,16 +12,14 @@
 #include <linux/mm.h>
 #include <linux/slab.h>
 #include <asm/sn/sgi.h>
-#include <asm/sn/invent.h>
 #include <asm/sn/hcl.h>
 #include <asm/sn/labelcl.h>
-#include <asm/sn/pci/bridge.h>
 #include <asm/sn/ioerror_handling.h>
 #include <asm/sn/pci/pciio.h>
 #include <asm/sn/slotnum.h>
 
 void *
-snia_kmem_zalloc(size_t size, int flag)
+snia_kmem_zalloc(size_t size)
 {
         void *ptr = kmalloc(size, GFP_KERNEL);
 	if ( ptr )
@@ -34,26 +32,6 @@
 {
         kfree(ptr);
 }
-
-/*
- * the alloc/free_node routines do a simple kmalloc for now ..
- */
-void *
-snia_kmem_alloc_node(register size_t size, register int flags, cnodeid_t node)
-{
-	/* someday will Allocate on node 'node' */
-	return(kmalloc(size, GFP_KERNEL));
-}
-
-void *
-snia_kmem_zalloc_node(register size_t size, register int flags, cnodeid_t node)
-{
-	void *ptr = kmalloc(size, GFP_KERNEL);
-	if ( ptr )
-		BZERO(ptr, size);
-        return(ptr);
-}
-
 
 /*
  * print_register() allows formatted printing of bit fields.  individual
diff -Nru a/arch/ia64/sn/io/sn2/bte_error.c b/arch/ia64/sn/io/sn2/bte_error.c
--- a/arch/ia64/sn/io/sn2/bte_error.c	Fri Oct 10 16:40:38 2003
+++ b/arch/ia64/sn/io/sn2/bte_error.c	Fri Oct 10 16:40:38 2003
@@ -39,7 +39,6 @@
 #include <asm/sn/sgi.h>
 #include <asm/sn/io.h>
 #include <asm/sn/iograph.h>
-#include <asm/sn/invent.h>
 #include <asm/sn/hcl.h>
 #include <asm/sn/labelcl.h>
 #include <asm/sn/sn_private.h>
diff -Nru a/arch/ia64/sn/io/sn2/geo_op.c b/arch/ia64/sn/io/sn2/geo_op.c
--- a/arch/ia64/sn/io/sn2/geo_op.c	Fri Oct 10 16:40:38 2003
+++ b/arch/ia64/sn/io/sn2/geo_op.c	Fri Oct 10 16:40:38 2003
@@ -29,7 +29,6 @@
 #include <asm/sn/types.h>
 #include <asm/sn/sgi.h>
 #include <asm/sn/iograph.h>
-#include <asm/sn/invent.h>
 #include <asm/sn/hcl.h>
 #include <asm/sn/labelcl.h>
 #include <asm/sn/io.h>
diff -Nru a/arch/ia64/sn/io/sn2/klconflib.c b/arch/ia64/sn/io/sn2/klconflib.c
--- a/arch/ia64/sn/io/sn2/klconflib.c	Fri Oct 10 16:40:38 2003
+++ b/arch/ia64/sn/io/sn2/klconflib.c	Fri Oct 10 16:40:38 2003
@@ -15,7 +15,6 @@
 #include <asm/sn/io.h>
 #include <asm/sn/sn_cpuid.h>
 #include <asm/sn/iograph.h>
-#include <asm/sn/invent.h>
 #include <asm/sn/hcl.h>
 #include <asm/sn/labelcl.h>
 #include <asm/sn/klconfig.h>
@@ -25,9 +24,6 @@
 #include <asm/sn/xtalk/xbow.h>
 
 
-#define LDEBUG 0
-#define NIC_UNKNOWN ((nic_t) -1)
-
 #undef DEBUG_KLGRAPH
 #ifdef DEBUG_KLGRAPH
 #define DBG(x...) printk(x)
@@ -186,33 +182,6 @@
 
 }
 
-/*
- * get_actual_nasid
- *
- *	Completely disabled brds have their klconfig on 
- *	some other nasid as they have no memory. But their
- *	actual nasid is hidden in the klconfig. Use this
- *	routine to get it. Works for normal boards too.
- */
-nasid_t
-get_actual_nasid(lboard_t *brd)
-{
-	klhub_t	*hub ;
-
-	if (!brd)
-		return INVALID_NASID ;
-
-	/* find out if we are a completely disabled brd. */
-
-        hub  = (klhub_t *)find_first_component(brd, KLSTRUCT_HUB);
-	if (!hub)
-                return INVALID_NASID ;
-	if (!(hub->hub_info.flags & KLINFO_ENABLE))	/* disabled node brd */
-		return hub->hub_info.physid ;
-	else
-		return brd->brd_nasid ;
-}
-
 int
 xbow_port_io_enabled(nasid_t nasid, int link)
 {
@@ -292,25 +261,6 @@
 	format_module_id(buffer, modnum, MODULE_FORMAT_BRIEF);
 	sprintf(path, EDGE_LBL_MODULE "/%s/" EDGE_LBL_SLAB "/%d/%s", buffer, geo_slab(brd->brd_geoid), board_name);
 }
-
-/*
- * Get the module number for a NASID.
- */
-moduleid_t
-get_module_id(nasid_t nasid)
-{
-	lboard_t *brd;
-
-	brd = find_lboard((lboard_t *)KL_CONFIG_INFO(nasid), KLTYPE_SNIA);
-
-	if (!brd)
-		return INVALID_MODULE;
-	else
-		return geo_module(brd->brd_geoid);
-}
-
-
-#define MHZ	1000000
 
 
 /* Get the canonical hardware graph name for the given pci component
diff -Nru a/arch/ia64/sn/io/sn2/klgraph.c b/arch/ia64/sn/io/sn2/klgraph.c
--- a/arch/ia64/sn/io/sn2/klgraph.c	Fri Oct 10 16:40:38 2003
+++ b/arch/ia64/sn/io/sn2/klgraph.c	Fri Oct 10 16:40:38 2003
@@ -28,13 +28,11 @@
 #include <asm/sn/xtalk/xbow.h>
 #include <asm/sn/hcl_util.h>
 
-// #define KLGRAPH_DEBUG 1
+/* #define KLGRAPH_DEBUG 1 */
 #ifdef KLGRAPH_DEBUG
 #define GRPRINTF(x)	printk x
-#define CE_GRPANIC	CE_PANIC
 #else
 #define GRPRINTF(x)
-#define CE_GRPANIC	CE_PANIC
 #endif
 
 #include <asm/sn/sn_private.h>
diff -Nru a/arch/ia64/sn/io/sn2/ml_iograph.c b/arch/ia64/sn/io/sn2/ml_iograph.c
--- a/arch/ia64/sn/io/sn2/ml_iograph.c	Fri Oct 10 16:40:38 2003
+++ b/arch/ia64/sn/io/sn2/ml_iograph.c	Fri Oct 10 16:40:38 2003
@@ -15,12 +15,10 @@
 #include <asm/sn/io.h>
 #include <asm/sn/sn_cpuid.h>
 #include <asm/sn/iograph.h>
-#include <asm/sn/invent.h>
 #include <asm/sn/hcl.h>
 #include <asm/sn/hcl_util.h>
 #include <asm/sn/labelcl.h>
 #include <asm/sn/xtalk/xbow.h>
-#include <asm/sn/pci/bridge.h>
 #include <asm/sn/klconfig.h>
 #include <asm/sn/sn_private.h>
 #include <asm/sn/pci/pcibr.h>
@@ -59,9 +57,9 @@
 {
 	xswitch_vol_t xvolinfo;
 	int rc;
-	extern void * snia_kmem_zalloc(size_t size, int flag);
+	extern void * snia_kmem_zalloc(size_t size);
 
-	xvolinfo = snia_kmem_zalloc(sizeof(struct xswitch_vol_s), GFP_KERNEL);
+	xvolinfo = snia_kmem_zalloc(sizeof(struct xswitch_vol_s));
 	mutex_init(&xvolinfo->xswitch_volunteer_mutex);
 	rc = hwgraph_info_add_LBL(xswitch, 
 			INFO_LBL_XSWITCH_VOL,
@@ -79,12 +77,11 @@
 {
 	xswitch_vol_t xvolinfo;
 	int rc;
-	extern void snia_kmem_free(void *ptr, size_t size);
 
 	rc = hwgraph_info_remove_LBL(xswitch, 
 				INFO_LBL_XSWITCH_VOL,
 				(arbitrary_info_t *)&xvolinfo);
-	snia_kmem_free(xvolinfo, sizeof(struct xswitch_vol_s));
+	kfree(xvolinfo);
 }
 /*
  * A Crosstalk master volunteers to manage xwidgets on the specified xswitch.
@@ -508,18 +505,11 @@
 			ASSERT_ALWAYS(to);
 			rc = hwgraph_edge_add(from, to,
 				EDGE_LBL_INTERCONNECT);
-			if (rc == -EEXIST)
-				goto link_done;
-			if (rc != GRAPH_SUCCESS) {
+			if ((rc != -EEXIST) && (rc != GRAPH_SUCCESS)) {
 				printk("%s: Unable to establish link"
 					" for xbmon.", pathname);
 			}
-link_done:
 		}
-
-#ifdef	SN0_USE_BTE
-		bte_bpush_war(cnode, (void *)board);
-#endif
 	}
 }
 
@@ -617,7 +607,6 @@
 	nodepda_t	*npdap;
 	struct semaphore *peer_sema = 0;
 	uint32_t	widget_partnum;
-	cpu_cookie_t	c = 0;
 
 	npdap = NODEPDA(cnodeid);
 
@@ -839,34 +828,6 @@
 
 static
 struct io_brick_map_s io_brick_tab[] = {
-
-/* Ibrick widget number to PCI bus number map */
- {      MODULE_IBRICK,                          /* Ibrick type    */ 
-    /*  PCI Bus #                                  Widget #       */
-    {   0, 0, 0, 0, 0, 0, 0, 0,                 /* 0x0 - 0x7      */
-        0,                                      /* 0x8            */
-        0,                                      /* 0x9            */
-        0, 0,                                   /* 0xa - 0xb      */
-        0,                                      /* 0xc            */
-        0,                                      /* 0xd            */
-        2,                                      /* 0xe            */
-        1                                       /* 0xf            */
-     }
- },
-
-/* Pbrick widget number to PCI bus number map */
- {      MODULE_PBRICK,                          /* Pbrick type    */ 
-    /*  PCI Bus #                                  Widget #       */
-    {   0, 0, 0, 0, 0, 0, 0, 0,                 /* 0x0 - 0x7      */
-        2,                                      /* 0x8            */
-        1,                                      /* 0x9            */
-        0, 0,                                   /* 0xa - 0xb      */
-        4,                                      /* 0xc            */
-        6,                                      /* 0xd            */
-        3,                                      /* 0xe            */
-        5                                       /* 0xf            */
-    }
- },
 
 /* PXbrick widget number to PCI bus number map */
  {      MODULE_PXBRICK,                         /* PXbrick type   */ 
diff -Nru a/arch/ia64/sn/io/sn2/pcibr/pcibr_slot.c b/arch/ia64/sn/io/sn2/pcibr/pcibr_slot.c
--- a/arch/ia64/sn/io/sn2/pcibr/pcibr_slot.c	Fri Oct 10 16:40:38 2003
+++ b/arch/ia64/sn/io/sn2/pcibr/pcibr_slot.c	Fri Oct 10 16:40:38 2003
@@ -319,9 +319,8 @@
     reg_p                        b_respp;
     pcibr_slot_info_resp_t       slotp;
     pcibr_slot_func_info_resp_t  funcp;
-    extern void snia_kmem_free(void *, int);
 
-    slotp = snia_kmem_zalloc(sizeof(*slotp), 0);
+    slotp = snia_kmem_zalloc(sizeof(*slotp));
     if (slotp == NULL) {
         return(ENOMEM);
     }
@@ -395,7 +394,7 @@
         return(EFAULT);
     }
 
-    snia_kmem_free(slotp, sizeof(*slotp));
+    kfree(slotp);
 
     return(0);
 }
diff -Nru a/arch/ia64/sn/io/sn2/shub.c b/arch/ia64/sn/io/sn2/shub.c
--- a/arch/ia64/sn/io/sn2/shub.c	Fri Oct 10 16:40:38 2003
+++ b/arch/ia64/sn/io/sn2/shub.c	Fri Oct 10 16:40:38 2003
@@ -203,7 +203,7 @@
         uint64_t        longarg;
 	int		nasid;
 
-        cnode = (cnodeid_t)file->f_dentry->d_fsdata;
+        cnode = (cnodeid_t)(long)file->f_dentry->d_fsdata;
 
         switch (cmd) {
 	case SNDRV_SHUB_CONFIGURE:
diff -Nru a/arch/ia64/sn/io/sn2/shub_intr.c b/arch/ia64/sn/io/sn2/shub_intr.c
--- a/arch/ia64/sn/io/sn2/shub_intr.c	Fri Oct 10 16:40:38 2003
+++ b/arch/ia64/sn/io/sn2/shub_intr.c	Fri Oct 10 16:40:38 2003
@@ -18,7 +18,6 @@
 #include <asm/sn/io.h>
 #include <asm/sn/sn_private.h>
 #include <asm/sn/addrs.h>
-#include <asm/sn/invent.h>
 #include <asm/sn/hcl.h>
 #include <asm/sn/hcl_util.h>
 #include <asm/sn/intr.h>
@@ -27,12 +26,6 @@
 #include <asm/sn/sn2/shub_mmr.h>
 #include <asm/sn/sn_cpuid.h>
 
-/* ARGSUSED */
-void
-hub_intr_init(vertex_hdl_t hubv)
-{
-}
-
 xwidgetnum_t
 hub_widget_id(nasid_t nasid)
 {
@@ -77,7 +70,7 @@
 		xtalk_addr = SH_II_INT0 | ((unsigned long)nasid << 36) | (1UL << 47);
 	}
 
-	intr_hdl = snia_kmem_alloc_node(sizeof(struct hub_intr_s), KM_NOSLEEP, cnode);
+	intr_hdl = kmalloc(sizeof(struct hub_intr_s), GFP_KERNEL);
 	ASSERT_ALWAYS(intr_hdl);
 
 	xtalk_info = &intr_hdl->i_xtalk_info;
diff -Nru a/arch/ia64/sn/io/sn2/xtalk.c b/arch/ia64/sn/io/sn2/xtalk.c
--- a/arch/ia64/sn/io/sn2/xtalk.c	Fri Oct 10 16:40:38 2003
+++ b/arch/ia64/sn/io/sn2/xtalk.c	Fri Oct 10 16:40:38 2003
@@ -912,11 +912,6 @@
     if (!(widget_info = xwidget_info_get(widget)))
 	return(1);
 
-    /* Remove the inventory information associated
-     * with the widget.
-     */
-    hwgraph_inventory_remove(widget, -1, -1, -1, -1, -1);
-    
     hwid = &(widget_info->w_hwid);
 
     /* Clean out the xwidget information */
diff -Nru a/include/asm-ia64/sn/arc/hinv.h b/include/asm-ia64/sn/arc/hinv.h
--- a/include/asm-ia64/sn/arc/hinv.h	Fri Oct 10 16:40:38 2003
+++ /dev/null	Wed Dec 31 16:00:00 1969
@@ -1,183 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2000-2003 Silicon Graphics, Inc. All rights reserved.
- */
-
-/* $Id$
- *
- * ARCS hardware/memory inventory/configuration and system ID definitions.
- */
-#ifndef _ASM_SN_ARC_HINV_H
-#define _ASM_SN_ARC_HINV_H
-
-#include <asm/sn/arc/types.h>
-
-/* configuration query defines */
-typedef enum configclass {
-	SystemClass,
-	ProcessorClass,
-	CacheClass,
-#ifndef	_NT_PROM
-	MemoryClass,
-	AdapterClass,
-	ControllerClass,
-	PeripheralClass
-#else	/* _NT_PROM */
-	AdapterClass,
-	ControllerClass,
-	PeripheralClass,
-	MemoryClass
-#endif	/* _NT_PROM */
-} CONFIGCLASS;
-
-typedef enum configtype {
-	ARC,
-	CPU,
-	FPU,
-	PrimaryICache,
-	PrimaryDCache,
-	SecondaryICache,
-	SecondaryDCache,
-	SecondaryCache,
-#ifndef	_NT_PROM
-	Memory,
-#endif
-	EISAAdapter,
-	TCAdapter,
-	SCSIAdapter,
-	DTIAdapter,
-	MultiFunctionAdapter,
-	DiskController,
-	TapeController,
-	CDROMController,
-	WORMController,
-	SerialController,
-	NetworkController,
-	DisplayController,
-	ParallelController,
-	PointerController,
-	KeyboardController,
-	AudioController,
-	OtherController,
-	DiskPeripheral,
-	FloppyDiskPeripheral,
-	TapePeripheral,
-	ModemPeripheral,
-	MonitorPeripheral,
-	PrinterPeripheral,
-	PointerPeripheral,
-	KeyboardPeripheral,
-	TerminalPeripheral,
-	LinePeripheral,
-	NetworkPeripheral,
-#ifdef	_NT_PROM
-	Memory,
-#endif
-	OtherPeripheral,
-
-	/* new stuff for IP30 */
-	/* added without moving anything */
-	/* except ANONYMOUS. */
-
-	XTalkAdapter,
-	PCIAdapter,
-	GIOAdapter,
-	TPUAdapter,
-	TernaryCache,
-	Anonymous
-} CONFIGTYPE;
-
-typedef enum {
-	Failed = 1,
-	ReadOnly = 2,
-	Removable = 4,
-	ConsoleIn = 8,
-	ConsoleOut = 16,
-	Input = 32,
-	Output = 64
-} IDENTIFIERFLAG;
-
-#ifndef NULL			/* for GetChild(NULL); */
-#define	NULL	0
-#endif
-
-union key_u {
-	struct {
-#ifdef	_MIPSEB
-		unsigned char  c_bsize;		/* block size in lines */
-		unsigned char  c_lsize;		/* line size in bytes/tag */
-		unsigned short c_size;		/* cache size in 4K pages */
-#else	/* _MIPSEL */
-		unsigned short c_size;		/* cache size in 4K pages */
-		unsigned char  c_lsize;		/* line size in bytes/tag */
-		unsigned char  c_bsize;		/* block size in lines */
-#endif	/* _MIPSEL */
-	} cache;
-	ULONG FullKey;
-};
-
-#if _MIPS_SIM == _ABI64
-#define SGI_ARCS_VERS	64			/* sgi 64-bit version */
-#define SGI_ARCS_REV	0			/* rev .00 */
-#else
-#define SGI_ARCS_VERS	1			/* first version */
-#define SGI_ARCS_REV	10			/* rev .10, 3/04/92 */
-#endif
-
-typedef struct component {
-	CONFIGCLASS	Class;
-	CONFIGTYPE	Type;
-	IDENTIFIERFLAG	Flags;
-	USHORT		Version;
-	USHORT		Revision;
-	ULONG 		Key;
-	ULONG		AffinityMask;
-	ULONG		ConfigurationDataSize;
-	ULONG		IdentifierLength;
-	char		*Identifier;
-} COMPONENT;
-
-/* internal structure that holds pathname parsing data */
-struct cfgdata {
-	char *name;			/* full name */
-	int minlen;			/* minimum length to match */
-	CONFIGTYPE type;		/* type of token */
-};
-
-/* System ID */
-typedef struct systemid {
-	CHAR VendorId[8];
-	CHAR ProductId[8];
-} SYSTEMID;
-
-/* memory query functions */
-typedef enum memorytype {
-	ExceptionBlock,
-	SPBPage,			/* ARCS == SystemParameterBlock */
-#ifndef	_NT_PROM
-	FreeContiguous,
-	FreeMemory,
-	BadMemory,
-	LoadedProgram,
-	FirmwareTemporary,
-	FirmwarePermanent
-#else	/* _NT_PROM */
-	FreeMemory,
-	BadMemory,
-	LoadedProgram,
-	FirmwareTemporary,
-	FirmwarePermanent,
-	FreeContiguous
-#endif	/* _NT_PROM */
-} MEMORYTYPE;
-
-typedef struct memorydescriptor {
-	MEMORYTYPE	Type;
-	LONG		BasePage;
-	LONG		PageCount;
-} MEMORYDESCRIPTOR;
-
-#endif /* _ASM_SN_ARC_HINV_H */
diff -Nru a/include/asm-ia64/sn/arc/types.h b/include/asm-ia64/sn/arc/types.h
--- a/include/asm-ia64/sn/arc/types.h	Fri Oct 10 16:40:38 2003
+++ /dev/null	Wed Dec 31 16:00:00 1969
@@ -1,41 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 1999,2001-2003 Silicon Graphics, Inc.  All Rights Reserved.
- * Copyright 1999 Ralf Baechle (ralf@gnu.org)
- */
-#ifndef _ASM_SN_ARC_TYPES_H
-#define _ASM_SN_ARC_TYPES_H
-
-typedef char		CHAR;
-typedef short		SHORT;
-typedef long		LARGE_INTEGER __attribute__ ((__mode__ (__DI__)));
-typedef	long		LONG __attribute__ ((__mode__ (__DI__)));
-typedef unsigned char	UCHAR;
-typedef unsigned short	USHORT;
-typedef unsigned long	ULONG __attribute__ ((__mode__ (__DI__)));
-typedef void		VOID;
-
-/* The pointer types.  We're 64-bit and the firmware is also 64-bit, so
-   live is sane ...  */
-typedef CHAR		*_PCHAR;
-typedef SHORT		*_PSHORT;
-typedef LARGE_INTEGER	*_PLARGE_INTEGER;
-typedef	LONG		*_PLONG;
-typedef UCHAR		*_PUCHAR;
-typedef USHORT		*_PUSHORT;
-typedef ULONG		*_PULONG;
-typedef VOID		*_PVOID;
-
-typedef CHAR		*PCHAR;
-typedef SHORT		*PSHORT;
-typedef LARGE_INTEGER	*PLARGE_INTEGER;
-typedef	LONG		*PLONG;
-typedef UCHAR		*PUCHAR;
-typedef USHORT		*PUSHORT;
-typedef ULONG		*PULONG;
-typedef VOID		*PVOID;
-
-#endif /* _ASM_SN_ARC_TYPES_H */
diff -Nru a/include/asm-ia64/sn/ioerror_handling.h b/include/asm-ia64/sn/ioerror_handling.h
--- a/include/asm-ia64/sn/ioerror_handling.h	Fri Oct 10 16:40:38 2003
+++ b/include/asm-ia64/sn/ioerror_handling.h	Fri Oct 10 16:40:38 2003
@@ -255,7 +255,7 @@
 	 * one.								 
 	 */								 
 	if (v_error_skip_env_get(v, error_env) != GRAPH_SUCCESS) {	 
-		error_env = snia_kmem_zalloc(sizeof(label_t), KM_NOSLEEP);	 
+		error_env = snia_kmem_zalloc(sizeof(label_t));	 
 		/* Unable to allocate memory for jum buffer. This should 
 		 * be a very rare occurrence.				 
 		 */							 
diff -Nru a/include/asm-ia64/sn/klconfig.h b/include/asm-ia64/sn/klconfig.h
--- a/include/asm-ia64/sn/klconfig.h	Fri Oct 10 16:40:38 2003
+++ b/include/asm-ia64/sn/klconfig.h	Fri Oct 10 16:40:38 2003
@@ -41,7 +41,6 @@
 #include <asm/sn/sgi.h>
 #include <asm/sn/addrs.h>
 #include <asm/sn/vector.h>
-#include <asm/sn/arc/hinv.h>
 #include <asm/sn/xtalk/xbow.h>
 #include <asm/sn/xtalk/xtalk.h>
 #include <asm/sn/kldir.h>
@@ -514,11 +513,11 @@
 	unsigned char	widid;	          /* Widget id - if applicable */
 	nasid_t		nasid;            /* node number - from parent */
 	char		pad1;		  /* pad out structure. */
-	char		pad2;		  /* pad out structure. */
-	COMPONENT	*arcs_compt;      /* ptr to the arcs struct for ease*/
+	char		pad2;
+	void		*pad3;
         klconf_off_t	errinfo;          /* component specific errors */
-        unsigned short  pad3;             /* pci fields have moved over to */
-        unsigned short  pad4;             /* klbri_t */
+        unsigned short  pad4;
+        unsigned short  pad5;
 } klinfo_t ;
 
 #define KLCONFIG_INFO_ENABLED(_i)	((_i)->flags & KLINFO_ENABLE)
diff -Nru a/include/asm-ia64/sn/pci/pcibr_private.h b/include/asm-ia64/sn/pci/pcibr_private.h
--- a/include/asm-ia64/sn/pci/pcibr_private.h	Fri Oct 10 16:40:38 2003
+++ b/include/asm-ia64/sn/pci/pcibr_private.h	Fri Oct 10 16:40:38 2003
@@ -662,8 +662,8 @@
 /*
  * mem alloc/free macros
  */
-#define NEWAf(ptr,n,f)	(ptr = snia_kmem_zalloc((n)*sizeof (*(ptr)), (f&PCIIO_NOSLEEP)?KM_NOSLEEP:KM_SLEEP))
-#define NEWA(ptr,n)	(ptr = snia_kmem_zalloc((n)*sizeof (*(ptr)), KM_SLEEP))
+#define NEWAf(ptr,n,f)	(ptr = snia_kmem_zalloc((n)*sizeof (*(ptr))))
+#define NEWA(ptr,n)	(ptr = snia_kmem_zalloc((n)*sizeof (*(ptr))))
 #define DELA(ptr,n)	(kfree(ptr))
 
 #define NEWf(ptr,f)	NEWAf(ptr,1,f)
diff -Nru a/include/asm-ia64/sn/sgi.h b/include/asm-ia64/sn/sgi.h
--- a/include/asm-ia64/sn/sgi.h	Fri Oct 10 16:40:38 2003
+++ b/include/asm-ia64/sn/sgi.h	Fri Oct 10 16:40:38 2003
@@ -169,9 +169,7 @@
 #define splhi()  0
 #define splx(s)
 
-extern void * snia_kmem_alloc_node(register size_t, register int, cnodeid_t);
-extern void * snia_kmem_zalloc(size_t, int);
-extern void * snia_kmem_zalloc_node(register size_t, register int, cnodeid_t );
+extern void * snia_kmem_zalloc(size_t);
 extern int is_specified(char *);
 
 #endif /* _ASM_IA64_SN_SGI_H */

Re: [PATCH] Altix I/O code cleanup

[Jesse Barnes]

David, please apply this set of patches from Pat.  Btw, any estimate as
to when your BK tree will be updated?

Thanks,
Jesse

On Fri, Oct 10, 2003 at 04:49:57PM -0500, Patrick Gefre wrote:
> This is my first patch for this - more to come ....

Re: [PATCH] Altix I/O code cleanup

[David Mosberger]

>>>>> On Fri, 10 Oct 2003 14:51:53 -0700, jbarnes@sgi.com (Jesse Barnes) said:

  Jesse> David, please apply this set of patches from Pat.

Unfortunately, the 2.6 tree is closed for cleanups.  I would _like_ to
see the patch applied, though.  Perhaps you could talk to Andrew and
see if you can get an exception?

  Jesse> Btw, any estimate as to when your BK tree will be updated?

Just did a short while ago.  It's not the final stuff, but getting closer.
(I just merged your discontig fixes, btw.)

	--david

Re: [PATCH] Altix I/O code cleanup

[Jesse Barnes]

On Fri, Oct 10, 2003 at 03:50:45PM -0700, David Mosberger wrote:
> >>>>> On Fri, 10 Oct 2003 14:51:53 -0700, jbarnes@sgi.com (Jesse Barnes) said:
> 
>   Jesse> David, please apply this set of patches from Pat.
> 
> Unfortunately, the 2.6 tree is closed for cleanups.  I would _like_ to
> see the patch applied, though.  Perhaps you could talk to Andrew and
> see if you can get an exception?

Ok, I'll talk to Pat.  I know that at least part of this is bugfixes.

>   Jesse> Btw, any estimate as to when your BK tree will be updated?
> 
> Just did a short while ago.  It's not the final stuff, but getting closer.
> (I just merged your discontig fixes, btw.)

Kick ass!  I've been waiting for this day! :)

Thanks,
Jesse

Re: [PATCH] Altix I/O code cleanup

[Christoph Hellwig]

On Fri, Oct 10, 2003 at 03:50:45PM -0700, David Mosberger wrote:
> >>>>> On Fri, 10 Oct 2003 14:51:53 -0700, jbarnes@sgi.com (Jesse Barnes) said:
> 
>   Jesse> David, please apply this set of patches from Pat.
> 
> Unfortunately, the 2.6 tree is closed for cleanups.  I would _like_ to
> see the patch applied, though.  Perhaps you could talk to Andrew and
> see if you can get an exception?

Sounds strange to apply this rule for a particular årchitectured that
just managed to compile again on 2.6 and has a huge backlog of cleanups
and restructuring now...

Re: [PATCH] Altix I/O code cleanup

[Andrew Morton]

Christoph Hellwig <hch@infradead.org> wrote:
>
> On Fri, Oct 10, 2003 at 03:50:45PM -0700, David Mosberger wrote:
> > >>>>> On Fri, 10 Oct 2003 14:51:53 -0700, jbarnes@sgi.com (Jesse Barnes) said:
> > 
> >   Jesse> David, please apply this set of patches from Pat.
> > 
> > Unfortunately, the 2.6 tree is closed for cleanups.  I would _like_ to
> > see the patch applied, though.  Perhaps you could talk to Andrew and
> > see if you can get an exception?
> 
> Sounds strange to apply this rule for a particular årchitectured that
> just managed to compile again on 2.6 and has a huge backlog of cleanups
> and restructuring now...

Well there are two reasons for discouraging cleanups.  The first is of
course that they can destabilise things.  But the other is that we want as
many developers as possible (Hi, Jesse) concentrating on stabilisation.

I hereby introduce the "bugzilla tax".  The cost of each cleanup is two
fixes for open bugzilla entries.

But if David really wants this change, and ongoing stabilisation work will
be based on top of it then yes, it probably should go in after good
testing.

Re: [PATCH] Altix I/O code cleanup

[Christoph Hellwig]

On Mon, Oct 13, 2003 at 03:55:12AM -0700, Andrew Morton wrote:
> Well there are two reasons for discouraging cleanups.  The first is of
> course that they can destabilise things.  But the other is that we want as
> many developers as possible (Hi, Jesse) concentrating on stabilisation.

Well, in this case we're talking about merging already existing patches..

Re: [PATCH] Altix I/O code cleanup

[Christoph Hellwig]

On Fri, Oct 10, 2003 at 04:49:57PM -0500, Patrick Gefre wrote:
> This is my first patch for this - more to come ....

It would be nice to give those credits who submitted those patches.
And life would be a lot simpler if you wouldn't submit my individual
patches instead of putting them into a big one - this gives useful
entries in the revision history and allows for easier binary search
if something goes wrong.

p.s. the right list for this would probably be linux-ia64@vger.kernel.org

>  
>  void *
> -snia_kmem_zalloc(size_t size, int flag)
> +snia_kmem_zalloc(size_t size)
>  {
>          void *ptr = kmalloc(size, GFP_KERNEL);

passing a gfp_mask down here would make sense..

> - * the alloc/free_node routines do a simple kmalloc for now ..
> - */
> -void *
> -snia_kmem_alloc_node(register size_t size, register int flags, cnodeid_t node)
> -{
> -	/* someday will Allocate on node 'node' */
> -	return(kmalloc(size, GFP_KERNEL));
> -}
> -
> -void *
> -snia_kmem_zalloc_node(register size_t size, register int flags, cnodeid_t node)
> -{
> -	void *ptr = kmalloc(size, GFP_KERNEL);
> -	if ( ptr )
> -		BZERO(ptr, size);
> -        return(ptr);
> -}

Why do you remove the per-nod wrappers?  Unlike the other these actually
had some use as preparation for a node-aware kmalloc..

>  	int rc;
> -	extern void * snia_kmem_zalloc(size_t size, int flag);
> +	extern void * snia_kmem_zalloc(size_t size);

This is in a header, isn't it?

>  
> -	xvolinfo = snia_kmem_zalloc(sizeof(struct xswitch_vol_s), GFP_KERNEL);
> +	xvolinfo = snia_kmem_zalloc(sizeof(struct xswitch_vol_s));

You still need to handle a NULL return here.

>  
> -	intr_hdl = snia_kmem_alloc_node(sizeof(struct hub_intr_s), KM_NOSLEEP, cnode);
> +	intr_hdl = kmalloc(sizeof(struct hub_intr_s), GFP_KERNEL);
>  	ASSERT_ALWAYS(intr_hdl);

NULL return not handled again (and the assert is totally useless)

> -#define NEWAf(ptr,n,f)	(ptr = snia_kmem_zalloc((n)*sizeof (*(ptr)), (f&PCIIO_NOSLEEP)?KM_NOSLEEP:KM_SLEEP))
> -#define NEWA(ptr,n)	(ptr = snia_kmem_zalloc((n)*sizeof (*(ptr)), KM_SLEEP))
> +#define NEWAf(ptr,n,f)	(ptr = snia_kmem_zalloc((n)*sizeof (*(ptr))))
> +#define NEWA(ptr,n)	(ptr = snia_kmem_zalloc((n)*sizeof (*(ptr))))
>  #define DELA(ptr,n)	(kfree(ptr))

What about killing this stupid wrappers while you're at it?
 Also PCIIO_NOSLEEP is never set.

Re: [PATCH] Altix I/O code cleanup

[Jes Sorensen]

>>>>> "Christoph" == Christoph Hellwig <hch@infradead.org> writes:

Christoph> On Fri, Oct 10, 2003 at 04:49:57PM -0500, Patrick Gefre
Christoph> wrote:

Christoph> Why do you remove the per-nod wrappers?  Unlike the other
Christoph> these actually had some use as preparation for a node-aware
Christoph> kmalloc..

I believe it was me who nuked it, until we start using it properly I
don't see any reason for keeping it as a placeholder.

>>  - intr_hdl = snia_kmem_alloc_node(sizeof(struct hub_intr_s),
>> KM_NOSLEEP, cnode); + intr_hdl = kmalloc(sizeof(struct hub_intr_s),
>> GFP_KERNEL); ASSERT_ALWAYS(intr_hdl);

Christoph> NULL return not handled again (and the assert is totally
Christoph> useless)

ASSERT_ALWAYS checks it, it may not be pretty but it does check it.

>> -#define NEWAf(ptr,n,f) (ptr = snia_kmem_zalloc((n)*sizeof
>> (*(ptr)), (f&PCIIO_NOSLEEP)?KM_NOSLEEP:KM_SLEEP)) -#define
>> NEWA(ptr,n) (ptr = snia_kmem_zalloc((n)*sizeof (*(ptr)), KM_SLEEP))
>> +#define NEWAf(ptr,n,f) (ptr = snia_kmem_zalloc((n)*sizeof
>> (*(ptr)))) +#define NEWA(ptr,n) (ptr = snia_kmem_zalloc((n)*sizeof
>> (*(ptr)))) #define DELA(ptr,n) (kfree(ptr))

Christoph> What about killing this stupid wrappers while you're at it?
Christoph> Also PCIIO_NOSLEEP is never set.

All the NEWA stuff is going, I sent Pat a patch for it already, it's
going away.

Cheers,
Jes

Re: [PATCH] Altix I/O code cleanup

[Christoph Hellwig]

On Wed, Oct 15, 2003 at 04:07:07AM -0400, Jes Sorensen wrote:
> Christoph> NULL return not handled again (and the assert is totally
> Christoph> useless)
> 
> ASSERT_ALWAYS checks it, it may not be pretty but it does check it.

No, it's useless.  It's not different at all from just derefencing a
NULL pointer - both get you an oops.

Re: [PATCH] Altix I/O code cleanup

[Jes Sorensen]

>>>>> "Christoph" == Christoph Hellwig <hch@infradead.org> writes:

>>  ASSERT_ALWAYS checks it, it may not be pretty but it does check
>> it.

Christoph> No, it's useless.  It's not different at all from just
Christoph> derefencing a NULL pointer - both get you an oops.

I haven't looked at the place right there, however if the intention is
to panic() on a failed kmalloc because the data structure is required
for a core service, then doing ASSERT_ALWAYS isn't that unreasonable.

Jes

Re: [PATCH] Altix I/O code cleanup

[Colin Ngam]

Jes Sorensen wrote:

> >>>>> "Christoph" == Christoph Hellwig <hch@infradead.org> writes:
>
> >>  ASSERT_ALWAYS checks it, it may not be pretty but it does check
> >> it.
>
> Christoph> No, it's useless.  It's not different at all from just
> Christoph> derefencing a NULL pointer - both get you an oops.

Hi Christoph,

In the pointer case yes.

>
>
> I haven't looked at the place right there, however if the intention is
> to panic() on a failed kmalloc because the data structure is required
> for a core service, then doing ASSERT_ALWAYS isn't that unreasonable.

ASSERT_ALWAYS is used for many other cases other than just for
testing NULL Pointers.  Whether you call ASSERT_ALWAYS or
call panic with a message or just allow it to oops, a descriptive panic
message can save some time.

Thanks.

colin

>
>
> Jes
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/

Re: [PATCH] Altix I/O code cleanup

[Christoph Hellwig]

On Thu, Oct 16, 2003 at 11:40:49AM -0500, Colin Ngam wrote:
> > to panic() on a failed kmalloc because the data structure is required
> > for a core service, then doing ASSERT_ALWAYS isn't that unreasonable.
> 
> ASSERT_ALWAYS is used for many other cases other than just for
> testing NULL Pointers.  Whether you call ASSERT_ALWAYS or
> call panic with a message or just allow it to oops, a descriptive panic
> message can save some time.

Of course - but that's not that point.  You have to handle an out of
memory situtation propery because it  may happen all the time - you
should not panic at all.  The ASSERT_ALWAYS just confuses automatic
checker tools that help to find such conditions.

Re: [PATCH] Altix I/O code cleanup

[Jes Sorensen]

>>>>> "Christoph" == Christoph Hellwig <hch@infradead.org> writes:

Christoph> Of course - but that's not that point.  You have to handle
Christoph> an out of memory situtation propery because it may happen
Christoph> all the time - you should not panic at all.  The
Christoph> ASSERT_ALWAYS just confuses automatic checker tools that
Christoph> help to find such conditions.

Again,

>From a purely theoretical standpoint as I don't remember the code in
question's situation, this again depends on where in the codepath you
hit this. If you don't get your memory for certain key data structures
early on, there's really very little you can do but panic().

Jes