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-rw-r--r--arch/alpha/kernel/module.c2
-rw-r--r--arch/arc/kernel/unwind.c4
-rw-r--r--arch/arm/kernel/module-plts.c2
-rw-r--r--arch/avr32/kernel/module.c12
-rw-r--r--arch/ia64/kernel/module.c14
-rw-r--r--arch/metag/kernel/module.c4
-rw-r--r--arch/mips/kernel/vpe.c6
-rw-r--r--arch/parisc/kernel/module.c32
-rw-r--r--arch/powerpc/kernel/module_32.c6
-rw-r--r--arch/s390/kernel/module.c22
-rw-r--r--arch/x86/kernel/livepatch.c6
-rw-r--r--include/linux/module.h64
-rw-r--r--kernel/debug/kdb/kdb_main.c4
-rw-r--r--kernel/module.c199
14 files changed, 178 insertions, 199 deletions
diff --git a/arch/alpha/kernel/module.c b/arch/alpha/kernel/module.c
index 2fd00b7077e4..936bc8f89a67 100644
--- a/arch/alpha/kernel/module.c
+++ b/arch/alpha/kernel/module.c
@@ -160,7 +160,7 @@ apply_relocate_add(Elf64_Shdr *sechdrs, const char *strtab,
/* The small sections were sorted to the end of the segment.
The following should definitely cover them. */
- gp = (u64)me->module_core + me->core_size - 0x8000;
+ gp = (u64)me->core_layout.base + me->core_layout.size - 0x8000;
got = sechdrs[me->arch.gotsecindex].sh_addr;
for (i = 0; i < n; i++) {
diff --git a/arch/arc/kernel/unwind.c b/arch/arc/kernel/unwind.c
index 93c6ea52b671..e0034a6656ef 100644
--- a/arch/arc/kernel/unwind.c
+++ b/arch/arc/kernel/unwind.c
@@ -372,8 +372,8 @@ void *unwind_add_table(struct module *module, const void *table_start,
return NULL;
init_unwind_table(table, module->name,
- module->module_core, module->core_size,
- module->module_init, module->init_size,
+ module->core_layout.base, module->core_layout.size,
+ module->init_layout.base, module->init_layout.size,
table_start, table_size,
NULL, 0);
diff --git a/arch/arm/kernel/module-plts.c b/arch/arm/kernel/module-plts.c
index 097e2e201b9f..0c7efc3446c0 100644
--- a/arch/arm/kernel/module-plts.c
+++ b/arch/arm/kernel/module-plts.c
@@ -32,7 +32,7 @@ struct plt_entries {
static bool in_init(const struct module *mod, u32 addr)
{
- return addr - (u32)mod->module_init < mod->init_size;
+ return addr - (u32)mod->init_layout.base < mod->init_layout.size;
}
u32 get_module_plt(struct module *mod, unsigned long loc, Elf32_Addr val)
diff --git a/arch/avr32/kernel/module.c b/arch/avr32/kernel/module.c
index 164efa009e5b..2b4c54c04cb6 100644
--- a/arch/avr32/kernel/module.c
+++ b/arch/avr32/kernel/module.c
@@ -118,9 +118,9 @@ int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
* Increase core size to make room for GOT and set start
* offset for GOT.
*/
- module->core_size = ALIGN(module->core_size, 4);
- module->arch.got_offset = module->core_size;
- module->core_size += module->arch.got_size;
+ module->core_layout.size = ALIGN(module->core_layout.size, 4);
+ module->arch.got_offset = module->core_layout.size;
+ module->core_layout.size += module->arch.got_size;
return 0;
@@ -177,7 +177,7 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, const char *strtab,
if (!info->got_initialized) {
Elf32_Addr *gotent;
- gotent = (module->module_core
+ gotent = (module->core_layout.base
+ module->arch.got_offset
+ info->got_offset);
*gotent = relocation;
@@ -255,8 +255,8 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, const char *strtab,
*/
pr_debug("GOTPC: PC=0x%x, got_offset=0x%lx, core=0x%p\n",
relocation, module->arch.got_offset,
- module->module_core);
- relocation -= ((unsigned long)module->module_core
+ module->core_layout.base);
+ relocation -= ((unsigned long)module->core_layout.base
+ module->arch.got_offset);
*location = relocation;
break;
diff --git a/arch/ia64/kernel/module.c b/arch/ia64/kernel/module.c
index b15933c31b2f..6ab0ae7d6535 100644
--- a/arch/ia64/kernel/module.c
+++ b/arch/ia64/kernel/module.c
@@ -486,13 +486,13 @@ module_frob_arch_sections (Elf_Ehdr *ehdr, Elf_Shdr *sechdrs, char *secstrings,
static inline int
in_init (const struct module *mod, uint64_t addr)
{
- return addr - (uint64_t) mod->module_init < mod->init_size;
+ return addr - (uint64_t) mod->init_layout.base < mod->init_layout.size;
}
static inline int
in_core (const struct module *mod, uint64_t addr)
{
- return addr - (uint64_t) mod->module_core < mod->core_size;
+ return addr - (uint64_t) mod->core_layout.base < mod->core_layout.size;
}
static inline int
@@ -675,7 +675,7 @@ do_reloc (struct module *mod, uint8_t r_type, Elf64_Sym *sym, uint64_t addend,
break;
case RV_BDREL:
- val -= (uint64_t) (in_init(mod, val) ? mod->module_init : mod->module_core);
+ val -= (uint64_t) (in_init(mod, val) ? mod->init_layout.base : mod->core_layout.base);
break;
case RV_LTV:
@@ -810,15 +810,15 @@ apply_relocate_add (Elf64_Shdr *sechdrs, const char *strtab, unsigned int symind
* addresses have been selected...
*/
uint64_t gp;
- if (mod->core_size > MAX_LTOFF)
+ if (mod->core_layout.size > MAX_LTOFF)
/*
* This takes advantage of fact that SHF_ARCH_SMALL gets allocated
* at the end of the module.
*/
- gp = mod->core_size - MAX_LTOFF / 2;
+ gp = mod->core_layout.size - MAX_LTOFF / 2;
else
- gp = mod->core_size / 2;
- gp = (uint64_t) mod->module_core + ((gp + 7) & -8);
+ gp = mod->core_layout.size / 2;
+ gp = (uint64_t) mod->core_layout.base + ((gp + 7) & -8);
mod->arch.gp = gp;
DEBUGP("%s: placing gp at 0x%lx\n", __func__, gp);
}
diff --git a/arch/metag/kernel/module.c b/arch/metag/kernel/module.c
index 986331cd0a52..bb8dfba9a763 100644
--- a/arch/metag/kernel/module.c
+++ b/arch/metag/kernel/module.c
@@ -176,8 +176,8 @@ static uint32_t do_plt_call(void *location, Elf32_Addr val,
tramp[1] = 0xac000001 | ((val & 0x0000ffff) << 3);
/* Init, or core PLT? */
- if (location >= mod->module_core
- && location < mod->module_core + mod->core_size)
+ if (location >= mod->core_layout.base
+ && location < mod->core_layout.base + mod->core_layout.size)
entry = (void *)sechdrs[mod->arch.core_plt_section].sh_addr;
else
entry = (void *)sechdrs[mod->arch.init_plt_section].sh_addr;
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index 9067b651c7a2..544ea21bfef9 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -205,11 +205,11 @@ static void layout_sections(struct module *mod, const Elf_Ehdr *hdr,
|| s->sh_entsize != ~0UL)
continue;
s->sh_entsize =
- get_offset((unsigned long *)&mod->core_size, s);
+ get_offset((unsigned long *)&mod->core_layout.size, s);
}
if (m == 0)
- mod->core_text_size = mod->core_size;
+ mod->core_layout.text_size = mod->core_layout.size;
}
}
@@ -641,7 +641,7 @@ static int vpe_elfload(struct vpe *v)
layout_sections(&mod, hdr, sechdrs, secstrings);
}
- v->load_addr = alloc_progmem(mod.core_size);
+ v->load_addr = alloc_progmem(mod.core_layout.size);
if (!v->load_addr)
return -ENOMEM;
diff --git a/arch/parisc/kernel/module.c b/arch/parisc/kernel/module.c
index 3c63a820fcda..b9d75d9fa9ac 100644
--- a/arch/parisc/kernel/module.c
+++ b/arch/parisc/kernel/module.c
@@ -42,9 +42,9 @@
* We are not doing SEGREL32 handling correctly. According to the ABI, we
* should do a value offset, like this:
* if (in_init(me, (void *)val))
- * val -= (uint32_t)me->module_init;
+ * val -= (uint32_t)me->init_layout.base;
* else
- * val -= (uint32_t)me->module_core;
+ * val -= (uint32_t)me->core_layout.base;
* However, SEGREL32 is used only for PARISC unwind entries, and we want
* those entries to have an absolute address, and not just an offset.
*
@@ -100,14 +100,14 @@
* or init pieces the location is */
static inline int in_init(struct module *me, void *loc)
{
- return (loc >= me->module_init &&
- loc <= (me->module_init + me->init_size));
+ return (loc >= me->init_layout.base &&
+ loc <= (me->init_layout.base + me->init_layout.size));
}
static inline int in_core(struct module *me, void *loc)
{
- return (loc >= me->module_core &&
- loc <= (me->module_core + me->core_size));
+ return (loc >= me->core_layout.base &&
+ loc <= (me->core_layout.base + me->core_layout.size));
}
static inline int in_local(struct module *me, void *loc)
@@ -367,13 +367,13 @@ int module_frob_arch_sections(CONST Elf_Ehdr *hdr,
}
/* align things a bit */
- me->core_size = ALIGN(me->core_size, 16);
- me->arch.got_offset = me->core_size;
- me->core_size += gots * sizeof(struct got_entry);
+ me->core_layout.size = ALIGN(me->core_layout.size, 16);
+ me->arch.got_offset = me->core_layout.size;
+ me->core_layout.size += gots * sizeof(struct got_entry);
- me->core_size = ALIGN(me->core_size, 16);
- me->arch.fdesc_offset = me->core_size;
- me->core_size += fdescs * sizeof(Elf_Fdesc);
+ me->core_layout.size = ALIGN(me->core_layout.size, 16);
+ me->arch.fdesc_offset = me->core_layout.size;
+ me->core_layout.size += fdescs * sizeof(Elf_Fdesc);
me->arch.got_max = gots;
me->arch.fdesc_max = fdescs;
@@ -391,7 +391,7 @@ static Elf64_Word get_got(struct module *me, unsigned long value, long addend)
BUG_ON(value == 0);
- got = me->module_core + me->arch.got_offset;
+ got = me->core_layout.base + me->arch.got_offset;
for (i = 0; got[i].addr; i++)
if (got[i].addr == value)
goto out;
@@ -409,7 +409,7 @@ static Elf64_Word get_got(struct module *me, unsigned long value, long addend)
#ifdef CONFIG_64BIT
static Elf_Addr get_fdesc(struct module *me, unsigned long value)
{
- Elf_Fdesc *fdesc = me->module_core + me->arch.fdesc_offset;
+ Elf_Fdesc *fdesc = me->core_layout.base + me->arch.fdesc_offset;
if (!value) {
printk(KERN_ERR "%s: zero OPD requested!\n", me->name);
@@ -427,7 +427,7 @@ static Elf_Addr get_fdesc(struct module *me, unsigned long value)
/* Create new one */
fdesc->addr = value;
- fdesc->gp = (Elf_Addr)me->module_core + me->arch.got_offset;
+ fdesc->gp = (Elf_Addr)me->core_layout.base + me->arch.got_offset;
return (Elf_Addr)fdesc;
}
#endif /* CONFIG_64BIT */
@@ -839,7 +839,7 @@ register_unwind_table(struct module *me,
table = (unsigned char *)sechdrs[me->arch.unwind_section].sh_addr;
end = table + sechdrs[me->arch.unwind_section].sh_size;
- gp = (Elf_Addr)me->module_core + me->arch.got_offset;
+ gp = (Elf_Addr)me->core_layout.base + me->arch.got_offset;
DEBUGP("register_unwind_table(), sect = %d at 0x%p - 0x%p (gp=0x%lx)\n",
me->arch.unwind_section, table, end, gp);
diff --git a/arch/powerpc/kernel/module_32.c b/arch/powerpc/kernel/module_32.c
index c94d2e018d84..2c01665eb410 100644
--- a/arch/powerpc/kernel/module_32.c
+++ b/arch/powerpc/kernel/module_32.c
@@ -188,8 +188,8 @@ static uint32_t do_plt_call(void *location,
pr_debug("Doing plt for call to 0x%x at 0x%x\n", val, (unsigned int)location);
/* Init, or core PLT? */
- if (location >= mod->module_core
- && location < mod->module_core + mod->core_size)
+ if (location >= mod->core_layout.base
+ && location < mod->core_layout.base + mod->core_layout.size)
entry = (void *)sechdrs[mod->arch.core_plt_section].sh_addr;
else
entry = (void *)sechdrs[mod->arch.init_plt_section].sh_addr;
@@ -296,7 +296,7 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
}
#ifdef CONFIG_DYNAMIC_FTRACE
module->arch.tramp =
- do_plt_call(module->module_core,
+ do_plt_call(module->core_layout.base,
(unsigned long)ftrace_caller,
sechdrs, module);
#endif
diff --git a/arch/s390/kernel/module.c b/arch/s390/kernel/module.c
index 0c1a679314dd..7873e171457c 100644
--- a/arch/s390/kernel/module.c
+++ b/arch/s390/kernel/module.c
@@ -159,11 +159,11 @@ int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
/* Increase core size by size of got & plt and set start
offsets for got and plt. */
- me->core_size = ALIGN(me->core_size, 4);
- me->arch.got_offset = me->core_size;
- me->core_size += me->arch.got_size;
- me->arch.plt_offset = me->core_size;
- me->core_size += me->arch.plt_size;
+ me->core_layout.size = ALIGN(me->core_layout.size, 4);
+ me->arch.got_offset = me->core_layout.size;
+ me->core_layout.size += me->arch.got_size;
+ me->arch.plt_offset = me->core_layout.size;
+ me->core_layout.size += me->arch.plt_size;
return 0;
}
@@ -279,7 +279,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
if (info->got_initialized == 0) {
Elf_Addr *gotent;
- gotent = me->module_core + me->arch.got_offset +
+ gotent = me->core_layout.base + me->arch.got_offset +
info->got_offset;
*gotent = val;
info->got_initialized = 1;
@@ -302,7 +302,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
rc = apply_rela_bits(loc, val, 0, 64, 0);
else if (r_type == R_390_GOTENT ||
r_type == R_390_GOTPLTENT) {
- val += (Elf_Addr) me->module_core - loc;
+ val += (Elf_Addr) me->core_layout.base - loc;
rc = apply_rela_bits(loc, val, 1, 32, 1);
}
break;
@@ -315,7 +315,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
case R_390_PLTOFF64: /* 16 bit offset from GOT to PLT. */
if (info->plt_initialized == 0) {
unsigned int *ip;
- ip = me->module_core + me->arch.plt_offset +
+ ip = me->core_layout.base + me->arch.plt_offset +
info->plt_offset;
ip[0] = 0x0d10e310; /* basr 1,0; lg 1,10(1); br 1 */
ip[1] = 0x100a0004;
@@ -334,7 +334,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
val - loc + 0xffffUL < 0x1ffffeUL) ||
(r_type == R_390_PLT32DBL &&
val - loc + 0xffffffffULL < 0x1fffffffeULL)))
- val = (Elf_Addr) me->module_core +
+ val = (Elf_Addr) me->core_layout.base +
me->arch.plt_offset +
info->plt_offset;
val += rela->r_addend - loc;
@@ -356,7 +356,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
case R_390_GOTOFF32: /* 32 bit offset to GOT. */
case R_390_GOTOFF64: /* 64 bit offset to GOT. */
val = val + rela->r_addend -
- ((Elf_Addr) me->module_core + me->arch.got_offset);
+ ((Elf_Addr) me->core_layout.base + me->arch.got_offset);
if (r_type == R_390_GOTOFF16)
rc = apply_rela_bits(loc, val, 0, 16, 0);
else if (r_type == R_390_GOTOFF32)
@@ -366,7 +366,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
break;
case R_390_GOTPC: /* 32 bit PC relative offset to GOT. */
case R_390_GOTPCDBL: /* 32 bit PC rel. off. to GOT shifted by 1. */
- val = (Elf_Addr) me->module_core + me->arch.got_offset +
+ val = (Elf_Addr) me->core_layout.base + me->arch.got_offset +
rela->r_addend - loc;
if (r_type == R_390_GOTPC)
rc = apply_rela_bits(loc, val, 1, 32, 0);
diff --git a/arch/x86/kernel/livepatch.c b/arch/x86/kernel/livepatch.c
index d1d35ccffed3..bcc06e82a593 100644
--- a/arch/x86/kernel/livepatch.c
+++ b/arch/x86/kernel/livepatch.c
@@ -41,8 +41,8 @@ int klp_write_module_reloc(struct module *mod, unsigned long type,
int ret, numpages, size = 4;
bool readonly;
unsigned long val;
- unsigned long core = (unsigned long)mod->module_core;
- unsigned long core_size = mod->core_size;
+ unsigned long core = (unsigned long)mod->core_layout.base;
+ unsigned long core_size = mod->core_layout.size;
switch (type) {
case R_X86_64_NONE:
@@ -72,7 +72,7 @@ int klp_write_module_reloc(struct module *mod, unsigned long type,
readonly = false;
#ifdef CONFIG_DEBUG_SET_MODULE_RONX
- if (loc < core + mod->core_ro_size)
+ if (loc < core + mod->core_layout.ro_size)
readonly = true;
#endif
diff --git a/include/linux/module.h b/include/linux/module.h
index 3a19c79918e0..6e68e8cf4d0d 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -302,6 +302,28 @@ struct mod_tree_node {
struct latch_tree_node node;
};
+struct module_layout {
+ /* The actual code + data. */
+ void *base;
+ /* Total size. */
+ unsigned int size;
+ /* The size of the executable code. */
+ unsigned int text_size;
+ /* Size of RO section of the module (text+rodata) */
+ unsigned int ro_size;
+
+#ifdef CONFIG_MODULES_TREE_LOOKUP
+ struct mod_tree_node mtn;
+#endif
+};
+
+#ifdef CONFIG_MODULES_TREE_LOOKUP
+/* Only touch one cacheline for common rbtree-for-core-layout case. */
+#define __module_layout_align ____cacheline_aligned
+#else
+#define __module_layout_align
+#endif
+
struct module {
enum module_state state;
@@ -366,37 +388,9 @@ struct module {
/* Startup function. */
int (*init)(void);
- /*
- * If this is non-NULL, vfree() after init() returns.
- *
- * Cacheline align here, such that:
- * module_init, module_core, init_size, core_size,
- * init_text_size, core_text_size and mtn_core::{mod,node[0]}
- * are on the same cacheline.
- */
- void *module_init ____cacheline_aligned;
-
- /* Here is the actual code + data, vfree'd on unload. */
- void *module_core;
-
- /* Here are the sizes of the init and core sections */
- unsigned int init_size, core_size;
-
- /* The size of the executable code in each section. */
- unsigned int init_text_size, core_text_size;
-
-#ifdef CONFIG_MODULES_TREE_LOOKUP
- /*
- * We want mtn_core::{mod,node[0]} to be in the same cacheline as the
- * above entries such that a regular lookup will only touch one
- * cacheline.
- */
- struct mod_tree_node mtn_core;
- struct mod_tree_node mtn_init;
-#endif
-
- /* Size of RO sections of the module (text+rodata) */
- unsigned int init_ro_size, core_ro_size;
+ /* Core layout: rbtree is accessed frequently, so keep together. */
+ struct module_layout core_layout __module_layout_align;
+ struct module_layout init_layout;
/* Arch-specific module values */
struct mod_arch_specific arch;
@@ -505,15 +499,15 @@ bool is_module_text_address(unsigned long addr);
static inline bool within_module_core(unsigned long addr,
const struct module *mod)
{
- return (unsigned long)mod->module_core <= addr &&
- addr < (unsigned long)mod->module_core + mod->core_size;
+ return (unsigned long)mod->core_layout.base <= addr &&
+ addr < (unsigned long)mod->core_layout.base + mod->core_layout.size;
}
static inline bool within_module_init(unsigned long addr,
const struct module *mod)
{
- return (unsigned long)mod->module_init <= addr &&
- addr < (unsigned long)mod->module_init + mod->init_size;
+ return (unsigned long)mod->init_layout.base <= addr &&
+ addr < (unsigned long)mod->init_layout.base + mod->init_layout.size;
}
static inline bool within_module(unsigned long addr, const struct module *mod)
diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
index 4121345498e0..2a20c0dfdafc 100644
--- a/kernel/debug/kdb/kdb_main.c
+++ b/kernel/debug/kdb/kdb_main.c
@@ -2021,7 +2021,7 @@ static int kdb_lsmod(int argc, const char **argv)
continue;
kdb_printf("%-20s%8u 0x%p ", mod->name,
- mod->core_size, (void *)mod);
+ mod->core_layout.size, (void *)mod);
#ifdef CONFIG_MODULE_UNLOAD
kdb_printf("%4d ", module_refcount(mod));
#endif
@@ -2031,7 +2031,7 @@ static int kdb_lsmod(int argc, const char **argv)
kdb_printf(" (Loading)");
else
kdb_printf(" (Live)");
- kdb_printf(" 0x%p", mod->module_core);
+ kdb_printf(" 0x%p", mod->core_layout.base);
#ifdef CONFIG_MODULE_UNLOAD
{
diff --git a/kernel/module.c b/kernel/module.c
index 14b224967e7b..a0a3d6d9d5e8 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -108,13 +108,6 @@ static LIST_HEAD(modules);
* Use a latched RB-tree for __module_address(); this allows us to use
* RCU-sched lookups of the address from any context.
*
- * Because modules have two address ranges: init and core, we need two
- * latch_tree_nodes entries. Therefore we need the back-pointer from
- * mod_tree_node.
- *
- * Because init ranges are short lived we mark them unlikely and have placed
- * them outside the critical cacheline in struct module.
- *
* This is conditional on PERF_EVENTS || TRACING because those can really hit
* __module_address() hard by doing a lot of stack unwinding; potentially from
* NMI context.
@@ -122,24 +115,16 @@ static LIST_HEAD(modules);
static __always_inline unsigned long __mod_tree_val(struct latch_tree_node *n)
{
- struct mod_tree_node *mtn = container_of(n, struct mod_tree_node, node);
- struct module *mod = mtn->mod;
+ struct module_layout *layout = container_of(n, struct module_layout, mtn.node);
- if (unlikely(mtn == &mod->mtn_init))
- return (unsigned long)mod->module_init;
-
- return (unsigned long)mod->module_core;
+ return (unsigned long)layout->base;
}
static __always_inline unsigned long __mod_tree_size(struct latch_tree_node *n)
{
- struct mod_tree_node *mtn = container_of(n, struct mod_tree_node, node);
- struct module *mod = mtn->mod;
-
- if (unlikely(mtn == &mod->mtn_init))
- return (unsigned long)mod->init_size;
+ struct module_layout *layout = container_of(n, struct module_layout, mtn.node);
- return (unsigned long)mod->core_size;
+ return (unsigned long)layout->size;
}
static __always_inline bool
@@ -197,23 +182,23 @@ static void __mod_tree_remove(struct mod_tree_node *node)
*/
static void mod_tree_insert(struct module *mod)
{
- mod->mtn_core.mod = mod;
- mod->mtn_init.mod = mod;
+ mod->core_layout.mtn.mod = mod;
+ mod->init_layout.mtn.mod = mod;
- __mod_tree_insert(&mod->mtn_core);
- if (mod->init_size)
- __mod_tree_insert(&mod->mtn_init);
+ __mod_tree_insert(&mod->core_layout.mtn);
+ if (mod->init_layout.size)
+ __mod_tree_insert(&mod->init_layout.mtn);
}
static void mod_tree_remove_init(struct module *mod)
{
- if (mod->init_size)
- __mod_tree_remove(&mod->mtn_init);
+ if (mod->init_layout.size)
+ __mod_tree_remove(&mod->init_layout.mtn);
}
static void mod_tree_remove(struct module *mod)
{
- __mod_tree_remove(&mod->mtn_core);
+ __mod_tree_remove(&mod->core_layout.mtn);
mod_tree_remove_init(mod);
}
@@ -267,9 +252,9 @@ static void __mod_update_bounds(void *base, unsigned int size)
static void mod_update_bounds(struct module *mod)
{
- __mod_update_bounds(mod->module_core, mod->core_size);
- if (mod->init_size)
- __mod_update_bounds(mod->module_init, mod->init_size);
+ __mod_update_bounds(mod->core_layout.base, mod->core_layout.size);
+ if (mod->init_layout.size)
+ __mod_update_bounds(mod->init_layout.base, mod->init_layout.size);
}
#ifdef CONFIG_KGDB_KDB
@@ -1214,7 +1199,7 @@ struct module_attribute module_uevent =
static ssize_t show_coresize(struct module_attribute *mattr,
struct module_kobject *mk, char *buffer)
{
- return sprintf(buffer, "%u\n", mk->mod->core_size);
+ return sprintf(buffer, "%u\n", mk->mod->core_layout.size);
}
static struct module_attribute modinfo_coresize =
@@ -1223,7 +1208,7 @@ static struct module_attribute modinfo_coresize =
static ssize_t show_initsize(struct module_attribute *mattr,
struct module_kobject *mk, char *buffer)
{
- return sprintf(buffer, "%u\n", mk->mod->init_size);
+ return sprintf(buffer, "%u\n", mk->mod->init_layout.size);
}
static struct module_attribute modinfo_initsize =
@@ -1917,29 +1902,29 @@ static void set_section_ro_nx(void *base,
static void set_module_core_ro_nx(struct module *mod)
{
- set_section_ro_nx(mod->module_core, mod->core_text_size,
- mod->core_ro_size, mod->core_size,
+ set_section_ro_nx(mod->core_layout.base, mod->core_layout.text_size,
+ mod->core_layout.ro_size, mod->core_layout.size,
set_memory_ro, set_memory_nx);
}
static void unset_module_core_ro_nx(struct module *mod)
{
- set_section_ro_nx(mod->module_core, mod->core_text_size,
- mod->core_ro_size, mod->core_size,
+ set_section_ro_nx(mod->core_layout.base, mod->core_layout.text_size,
+ mod->core_layout.ro_size, mod->core_layout.size,
set_memory_rw, set_memory_x);
}
static void set_module_init_ro_nx(struct module *mod)
{
- set_section_ro_nx(mod->module_init, mod->init_text_size,
- mod->init_ro_size, mod->init_size,
+ set_section_ro_nx(mod->init_layout.base, mod->init_layout.text_size,
+ mod->init_layout.ro_size, mod->init_layout.size,
set_memory_ro, set_memory_nx);
}
static void unset_module_init_ro_nx(struct module *mod)
{
- set_section_ro_nx(mod->module_init, mod->init_text_size,
- mod->init_ro_size, mod->init_size,
+ set_section_ro_nx(mod->init_layout.base, mod->init_layout.text_size,
+ mod->init_layout.ro_size, mod->init_layout.size,
set_memory_rw, set_memory_x);
}
@@ -1952,14 +1937,14 @@ void set_all_modules_text_rw(void)
list_for_each_entry_rcu(mod, &modules, list) {
if (mod->state == MODULE_STATE_UNFORMED)
continue;
- if ((mod->module_core) && (mod->core_text_size)) {
- set_page_attributes(mod->module_core,
- mod->module_core + mod->core_text_size,
+ if ((mod->core_layout.base) && (mod->core_layout.text_size)) {
+ set_page_attributes(mod->core_layout.base,
+ mod->core_layout.base + mod->core_layout.text_size,
set_memory_rw);
}
- if ((mod->module_init) && (mod->init_text_size)) {
- set_page_attributes(mod->module_init,
- mod->module_init + mod->init_text_size,
+ if ((mod->init_layout.base) && (mod->init_layout.text_size)) {
+ set_page_attributes(mod->init_layout.base,
+ mod->init_layout.base + mod->init_layout.text_size,
set_memory_rw);
}
}
@@ -1975,14 +1960,14 @@ void set_all_modules_text_ro(void)
list_for_each_entry_rcu(mod, &modules, list) {
if (mod->state == MODULE_STATE_UNFORMED)
continue;
- if ((mod->module_core) && (mod->core_text_size)) {
- set_page_attributes(mod->module_core,
- mod->module_core + mod->core_text_size,
+ if ((mod->core_layout.base) && (mod->core_layout.text_size)) {
+ set_page_attributes(mod->core_layout.base,
+ mod->core_layout.base + mod->core_layout.text_size,
set_memory_ro);
}
- if ((mod->module_init) && (mod->init_text_size)) {
- set_page_attributes(mod->module_init,
- mod->module_init + mod->init_text_size,
+ if ((mod->init_layout.base) && (mod->init_layout.text_size)) {
+ set_page_attributes(mod->init_layout.base,
+ mod->init_layout.base + mod->init_layout.text_size,
set_memory_ro);
}
}
@@ -2047,16 +2032,16 @@ static void free_module(struct module *mod)
/* This may be NULL, but that's OK */
unset_module_init_ro_nx(mod);
module_arch_freeing_init(mod);
- module_memfree(mod->module_init);
+ module_memfree(mod->init_layout.base);
kfree(mod->args);
percpu_modfree(mod);
/* Free lock-classes; relies on the preceding sync_rcu(). */
- lockdep_free_key_range(mod->module_core, mod->core_size);
+ lockdep_free_key_range(mod->core_layout.base, mod->core_layout.size);
/* Finally, free the core (containing the module structure) */
unset_module_core_ro_nx(mod);
- module_memfree(mod->module_core);
+ module_memfree(mod->core_layout.base);
#ifdef CONFIG_MPU
update_protections(current->mm);
@@ -2259,20 +2244,20 @@ static void layout_sections(struct module *mod, struct load_info *info)
|| s->sh_entsize != ~0UL
|| strstarts(sname, ".init"))
continue;
- s->sh_entsize = get_offset(mod, &mod->core_size, s, i);
+ s->sh_entsize = get_offset(mod, &mod->core_layout.size, s, i);
pr_debug("\t%s\n", sname);
}
switch (m) {
case 0: /* executable */
- mod->core_size = debug_align(mod->core_size);
- mod->core_text_size = mod->core_size;
+ mod->core_layout.size = debug_align(mod->core_layout.size);
+ mod->core_layout.text_size = mod->core_layout.size;
break;
case 1: /* RO: text and ro-data */
- mod->core_size = debug_align(mod->core_size);
- mod->core_ro_size = mod->core_size;
+ mod->core_layout.size = debug_align(mod->core_layout.size);
+ mod->core_layout.ro_size = mod->core_layout.size;
break;
case 3: /* whole core */
- mod->core_size = debug_align(mod->core_size);
+ mod->core_layout.size = debug_align(mod->core_layout.size);
break;
}
}
@@ -2288,21 +2273,21 @@ static void layout_sections(struct module *mod, struct load_info *info)
|| s->sh_entsize != ~0UL
|| !strstarts(sname, ".init"))
continue;
- s->sh_entsize = (get_offset(mod, &mod->init_size, s, i)
+ s->sh_entsize = (get_offset(mod, &mod->init_layout.size, s, i)
| INIT_OFFSET_MASK);
pr_debug("\t%s\n", sname);
}
switch (m) {
case 0: /* executable */
- mod->init_size = debug_align(mod->init_size);
- mod->init_text_size = mod->init_size;
+ mod->init_layout.size = debug_align(mod->init_layout.size);
+ mod->init_layout.text_size = mod->init_layout.size;
break;
case 1: /* RO: text and ro-data */
- mod->init_size = debug_align(mod->init_size);
- mod->init_ro_size = mod->init_size;
+ mod->init_layout.size = debug_align(mod->init_layout.size);
+ mod->init_layout.ro_size = mod->init_layout.size;
break;
case 3: /* whole init */
- mod->init_size = debug_align(mod->init_size);
+ mod->init_layout.size = debug_align(mod->init_layout.size);
break;
}
}
@@ -2477,7 +2462,7 @@ static void layout_symtab(struct module *mod, struct load_info *info)
/* Put symbol section at end of init part of module. */
symsect->sh_flags |= SHF_ALLOC;
- symsect->sh_entsize = get_offset(mod, &mod->init_size, symsect,
+ symsect->sh_entsize = get_offset(mod, &mod->init_layout.size, symsect,
info->index.sym) | INIT_OFFSET_MASK;
pr_debug("\t%s\n", info->secstrings + symsect->sh_name);
@@ -2494,16 +2479,16 @@ static void layout_symtab(struct module *mod, struct load_info *info)
}
/* Append room for core symbols at end of core part. */
- info->symoffs = ALIGN(mod->core_size, symsect->sh_addralign ?: 1);
- info->stroffs = mod->core_size = info->symoffs + ndst * sizeof(Elf_Sym);
- mod->core_size += strtab_size;
- mod->core_size = debug_align(mod->core_size);
+ info->symoffs = ALIGN(mod->core_layout.size, symsect->sh_addralign ?: 1);
+ info->stroffs = mod->core_layout.size = info->symoffs + ndst * sizeof(Elf_Sym);
+ mod->core_layout.size += strtab_size;
+ mod->core_layout.size = debug_align(mod->core_layout.size);
/* Put string table section at end of init part of module. */
strsect->sh_flags |= SHF_ALLOC;
- strsect->sh_entsize = get_offset(mod, &mod->init_size, strsect,
+ strsect->sh_entsize = get_offset(mod, &mod->init_layout.size, strsect,
info->index.str) | INIT_OFFSET_MASK;
- mod->init_size = debug_align(mod->init_size);
+ mod->init_layout.size = debug_align(mod->init_layout.size);
pr_debug("\t%s\n", info->secstrings + strsect->sh_name);
}
@@ -2524,8 +2509,8 @@ static void add_kallsyms(struct module *mod, const struct load_info *info)
for (i = 0; i < mod->num_symtab; i++)
mod->symtab[i].st_info = elf_type(&mod->symtab[i], info);
- mod->core_symtab = dst = mod->module_core + info->symoffs;
- mod->core_strtab = s = mod->module_core + info->stroffs;
+ mod->core_symtab = dst = mod->core_layout.base + info->symoffs;
+ mod->core_strtab = s = mod->core_layout.base + info->stroffs;
src = mod->symtab;
for (ndst = i = 0; i < mod->num_symtab; i++) {
if (i == 0 ||
@@ -2975,7 +2960,7 @@ static int move_module(struct module *mod, struct load_info *info)
void *ptr;
/* Do the allocs. */
- ptr = module_alloc(mod->core_size);
+ ptr = module_alloc(mod->core_layout.size);
/*
* The pointer to this block is stored in the module structure
* which is inside the block. Just mark it as not being a
@@ -2985,11 +2970,11 @@ static int move_module(struct module *mod, struct load_info *info)
if (!ptr)
return -ENOMEM;
- memset(ptr, 0, mod->core_size);
- mod->module_core = ptr;
+ memset(ptr, 0, mod->core_layout.size);
+ mod->core_layout.base = ptr;
- if (mod->init_size) {
- ptr = module_alloc(mod->init_size);
+ if (mod->init_layout.size) {
+ ptr = module_alloc(mod->init_layout.size);
/*
* The pointer to this block is stored in the module structure
* which is inside the block. This block doesn't need to be
@@ -2998,13 +2983,13 @@ static int move_module(struct module *mod, struct load_info *info)
*/
kmemleak_ignore(ptr);
if (!ptr) {
- module_memfree(mod->module_core);
+ module_memfree(mod->core_layout.base);
return -ENOMEM;
}
- memset(ptr, 0, mod->init_size);
- mod->module_init = ptr;
+ memset(ptr, 0, mod->init_layout.size);
+ mod->init_layout.base = ptr;
} else
- mod->module_init = NULL;
+ mod->init_layout.base = NULL;
/* Transfer each section which specifies SHF_ALLOC */
pr_debug("final section addresses:\n");
@@ -3016,10 +3001,10 @@ static int move_module(struct module *mod, struct load_info *info)
continue;
if (shdr->sh_entsize & INIT_OFFSET_MASK)
- dest = mod->module_init
+ dest = mod->init_layout.base
+ (shdr->sh_entsize & ~INIT_OFFSET_MASK);
else
- dest = mod->module_core + shdr->sh_entsize;
+ dest = mod->core_layout.base + shdr->sh_entsize;
if (shdr->sh_type != SHT_NOBITS)
memcpy(dest, (void *)shdr->sh_addr, shdr->sh_size);
@@ -3081,12 +3066,12 @@ static void flush_module_icache(const struct module *mod)
* Do it before processing of module parameters, so the module
* can provide parameter accessor functions of its own.
*/
- if (mod->module_init)
- flush_icache_range((unsigned long)mod->module_init,
- (unsigned long)mod->module_init
- + mod->init_size);
- flush_icache_range((unsigned long)mod->module_core,
- (unsigned long)mod->module_core + mod->core_size);
+ if (mod->init_layout.base)
+ flush_icache_range((unsigned long)mod->init_layout.base,
+ (unsigned long)mod->init_layout.base
+ + mod->init_layout.size);
+ flush_icache_range((unsigned long)mod->core_layout.base,
+ (unsigned long)mod->core_layout.base + mod->core_layout.size);
set_fs(old_fs);
}
@@ -3144,8 +3129,8 @@ static void module_deallocate(struct module *mod, struct load_info *info)
{
percpu_modfree(mod);
module_arch_freeing_init(mod);
- module_memfree(mod->module_init);
- module_memfree(mod->module_core);
+ module_memfree(mod->init_layout.base);
+ module_memfree(mod->core_layout.base);
}
int __weak module_finalize(const Elf_Ehdr *hdr,
@@ -3232,7 +3217,7 @@ static noinline int do_init_module(struct module *mod)
ret = -ENOMEM;
goto fail;
}
- freeinit->module_init = mod->module_init;
+ freeinit->module_init = mod->init_layout.base;
/*
* We want to find out whether @mod uses async during init. Clear
@@ -3292,10 +3277,10 @@ static noinline int do_init_module(struct module *mod)
mod_tree_remove_init(mod);
unset_module_init_ro_nx(mod);
module_arch_freeing_init(mod);
- mod->module_init = NULL;
- mod->init_size = 0;
- mod->init_ro_size = 0;
- mod->init_text_size = 0;
+ mod->init_layout.base = NULL;
+ mod->init_layout.size = 0;
+ mod->init_layout.ro_size = 0;
+ mod->init_layout.text_size = 0;
/*
* We want to free module_init, but be aware that kallsyms may be
* walking this with preempt disabled. In all the failure paths, we
@@ -3575,7 +3560,7 @@ static int load_module(struct load_info *info, const char __user *uargs,
mutex_unlock(&module_mutex);
free_module:
/* Free lock-classes; relies on the preceding sync_rcu() */
- lockdep_free_key_range(mod->module_core, mod->core_size);
+ lockdep_free_key_range(mod->core_layout.base, mod->core_layout.size);
module_deallocate(mod, info);
free_copy:
@@ -3653,9 +3638,9 @@ static const char *get_ksymbol(struct module *mod,
/* At worse, next value is at end of module */
if (within_module_init(addr, mod))
- nextval = (unsigned long)mod->module_init+mod->init_text_size;
+ nextval = (unsigned long)mod->init_layout.base+mod->init_layout.text_size;
else
- nextval = (unsigned long)mod->module_core+mod->core_text_size;
+ nextval = (unsigned long)mod->core_layout.base+mod->core_layout.text_size;
/* Scan for closest preceding symbol, and next symbol. (ELF
starts real symbols at 1). */
@@ -3902,7 +3887,7 @@ static int m_show(struct seq_file *m, void *p)
return 0;
seq_printf(m, "%s %u",
- mod->name, mod->init_size + mod->core_size);
+ mod->name, mod->init_layout.size + mod->core_layout.size);
print_unload_info(m, mod);
/* Informative for users. */
@@ -3911,7 +3896,7 @@ static int m_show(struct seq_file *m, void *p)
mod->state == MODULE_STATE_COMING ? "Loading" :
"Live");
/* Used by oprofile and other similar tools. */
- seq_printf(m, " 0x%pK", mod->module_core);
+ seq_printf(m, " 0x%pK", mod->core_layout.base);
/* Taints info */
if (mod->taints)
@@ -4054,8 +4039,8 @@ struct module *__module_text_address(unsigned long addr)
struct module *mod = __module_address(addr);
if (mod) {
/* Make sure it's within the text section. */
- if (!within(addr, mod->module_init, mod->init_text_size)
- && !within(addr, mod->module_core, mod->core_text_size))
+ if (!within(addr, mod->init_layout.base, mod->init_layout.text_size)
+ && !within(addr, mod->core_layout.base, mod->core_layout.text_size))
mod = NULL;
}
return mod;
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-19 02:54:37 +0000