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VPE loader janitoring 

o Switch to dynamic major
 o Remove duplicate SHN_MIPS_SCOMMON definition
 o Coding style: remove typedefs.
 o Coding style: reorder to avoid the need for forward declarations
 o Use kzalloc.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2005-10-31 23:34:52 +00:00
parent b8c2a77ce3
commit 307bd284c2
1 changed files with 44 additions and 56 deletions
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100
arch/mips/kernel/vpe.c
View File

@ -58,10 +58,6 @@
typedef void *vpe_handle;
// defined here because the kernel module loader doesn't have
// anything to do with it.
#define SHN_MIPS_SCOMMON 0xff03
#ifndef ARCH_SHF_SMALL
#define ARCH_SHF_SMALL 0
#endif
@ -69,11 +65,8 @@ typedef void *vpe_handle;
/* If this is set, the section belongs in the init part of the module */
#define INIT_OFFSET_MASK (1UL << (BITS_PER_LONG-1))
// temp number,
#define VPE_MAJOR 63
static char module_name[] = "vpe";
static int major = 0;
static int major;
/* grab the likely amount of memory we will need. */
#ifdef CONFIG_MIPS_VPE_LOADER_TOM
@ -98,22 +91,7 @@ enum tc_state {
TC_STATE_DYNAMIC
};
struct vpe;
typedef struct tc {
enum tc_state state;
int index;
/* parent VPE */
struct vpe *pvpe;
/* The list of TC's with this VPE */
struct list_head tc;
/* The global list of tc's */
struct list_head list;
} tc_t;
typedef struct vpe {
struct vpe {
enum vpe_state state;
/* (device) minor associated with this vpe */
@ -135,7 +113,21 @@ typedef struct vpe {
/* shared symbol address */
void *shared_ptr;
} vpe_t;
};
struct tc {
enum tc_state state;
int index;
/* parent VPE */
struct vpe *pvpe;
/* The list of TC's with this VPE */
struct list_head tc;
/* The global list of tc's */
struct list_head list;
};
struct vpecontrol_ {
/* Virtual processing elements */
@ -146,7 +138,7 @@ struct vpecontrol_ {
} vpecontrol;
static void release_progmem(void *ptr);
static void dump_vpe(vpe_t * v);
static void dump_vpe(struct vpe * v);
extern void save_gp_address(unsigned int secbase, unsigned int rel);
/* get the vpe associated with this minor */
@ -197,13 +189,11 @@ struct vpe *alloc_vpe(int minor)
{
struct vpe *v;
if ((v = kmalloc(sizeof(struct vpe), GFP_KERNEL)) == NULL) {
if ((v = kzalloc(sizeof(struct vpe), GFP_KERNEL)) == NULL) {
printk(KERN_WARNING "VPE: alloc_vpe no mem\n");
return NULL;
}
memset(v, 0, sizeof(struct vpe));
INIT_LIST_HEAD(&v->tc);
list_add_tail(&v->list, &vpecontrol.vpe_list);
@ -216,13 +206,11 @@ struct tc *alloc_tc(int index)
{
struct tc *t;
if ((t = kmalloc(sizeof(struct tc), GFP_KERNEL)) == NULL) {
if ((t = kzalloc(sizeof(struct tc), GFP_KERNEL)) == NULL) {
printk(KERN_WARNING "VPE: alloc_tc no mem\n");
return NULL;
}
memset(t, 0, sizeof(struct tc));
INIT_LIST_HEAD(&t->tc);
list_add_tail(&t->list, &vpecontrol.tc_list);
@ -412,16 +400,17 @@ static int apply_r_mips_26(struct module *me, uint32_t *location,
return -ENOEXEC;
}
/* Not desperately convinced this is a good check of an overflow condition
anyway. But it gets in the way of handling undefined weak symbols which
we want to set to zero.
if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) {
printk(KERN_ERR
"module %s: relocation overflow\n",
me->name);
return -ENOEXEC;
}
*/
/*
* Not desperately convinced this is a good check of an overflow condition
* anyway. But it gets in the way of handling undefined weak symbols which
* we want to set to zero.
* if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) {
* printk(KERN_ERR
* "module %s: relocation overflow\n",
* me->name);
* return -ENOEXEC;
* }
*/
*location = (*location & ~0x03ffffff) |
((*location + (v >> 2)) & 0x03ffffff);
@ -681,7 +670,7 @@ static void dump_tclist(void)
}
/* We are prepared so configure and start the VPE... */
int vpe_run(vpe_t * v)
int vpe_run(struct vpe * v)
{
unsigned long val;
struct tc *t;
@ -772,7 +761,7 @@ int vpe_run(vpe_t * v)
return 0;
}
static unsigned long find_vpe_symbols(vpe_t * v, Elf_Shdr * sechdrs,
static unsigned long find_vpe_symbols(struct vpe * v, Elf_Shdr * sechdrs,
unsigned int symindex, const char *strtab,
struct module *mod)
{
@ -792,10 +781,12 @@ static unsigned long find_vpe_symbols(vpe_t * v, Elf_Shdr * sechdrs,
return 0;
}
/* Allocates a VPE with some program code space(the load address), copies the contents
of the program (p)buffer performing relocatations/etc, free's it when finished.
/*
* Allocates a VPE with some program code space(the load address), copies
* the contents of the program (p)buffer performing relocatations/etc,
* free's it when finished.
*/
int vpe_elfload(vpe_t * v)
int vpe_elfload(struct vpe * v)
{
Elf_Ehdr *hdr;
Elf_Shdr *sechdrs;
@ -931,7 +922,7 @@ cleanup:
return err;
}
static void dump_vpe(vpe_t * v)
static void dump_vpe(struct vpe * v)
{
struct tc *t;
@ -947,7 +938,7 @@ static void dump_vpe(vpe_t * v)
static int vpe_open(struct inode *inode, struct file *filp)
{
int minor;
vpe_t *v;
struct vpe *v;
/* assume only 1 device at the mo. */
if ((minor = MINOR(inode->i_rdev)) != 1) {
@ -1001,7 +992,7 @@ static int vpe_open(struct inode *inode, struct file *filp)
static int vpe_release(struct inode *inode, struct file *filp)
{
int minor, ret = 0;
vpe_t *v;
struct vpe *v;
Elf_Ehdr *hdr;
minor = MINOR(inode->i_rdev);
@ -1035,7 +1026,7 @@ static ssize_t vpe_write(struct file *file, const char __user * buffer,
{
int minor;
size_t ret = count;
vpe_t *v;
struct vpe *v;
minor = MINOR(file->f_dentry->d_inode->i_rdev);
if ((v = get_vpe(minor)) == NULL)
@ -1180,14 +1171,11 @@ static int __init vpe_module_init(void)
return -ENODEV;
}
if ((major = register_chrdev(VPE_MAJOR, module_name, &vpe_fops) < 0)) {
if ((major = register_chrdev(0, module_name, &vpe_fops) < 0)) {
printk("VPE loader: unable to register character device\n");
return -EBUSY;
return major;
}
if (major == 0)
major = VPE_MAJOR;
dmt();
dvpe();