x86: Move find_smp_config() earlier and avoid bootmem usage
Move the find_smp_config() call to before bootmem is initialized.
Use reserve_early() instead of reserve_bootmem() in it.
This simplifies the code, we only need to call find_smp_config()
once and can remove the now unneeded reserve parameter from
x86_init_mpparse::find_smp_config.
We thus also reduce x86's dependency on bootmem allocations.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4B0BB9F2.70907@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/include/asm/mpspec.h b/arch/x86/include/asm/mpspec.h
index 79c9450..644cf1a 100644
--- a/arch/x86/include/asm/mpspec.h
+++ b/arch/x86/include/asm/mpspec.h
@@ -71,12 +71,7 @@
static inline void find_smp_config(void)
{
- x86_init.mpparse.find_smp_config(1);
-}
-
-static inline void early_find_smp_config(void)
-{
- x86_init.mpparse.find_smp_config(0);
+ x86_init.mpparse.find_smp_config();
}
#ifdef CONFIG_X86_MPPARSE
@@ -89,7 +84,7 @@
# else
# define default_mpc_oem_bus_info NULL
# endif
-extern void default_find_smp_config(unsigned int reserve);
+extern void default_find_smp_config(void);
extern void default_get_smp_config(unsigned int early);
#else
static inline void early_reserve_e820_mpc_new(void) { }
@@ -97,7 +92,7 @@
#define default_mpc_apic_id NULL
#define default_smp_read_mpc_oem NULL
#define default_mpc_oem_bus_info NULL
-#define default_find_smp_config x86_init_uint_noop
+#define default_find_smp_config x86_init_noop
#define default_get_smp_config x86_init_uint_noop
#endif
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index 024cf3c..97e5fb4 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -26,7 +26,7 @@
void (*smp_read_mpc_oem)(struct mpc_table *mpc);
void (*mpc_oem_pci_bus)(struct mpc_bus *m);
void (*mpc_oem_bus_info)(struct mpc_bus *m, char *name);
- void (*find_smp_config)(unsigned int reserve);
+ void (*find_smp_config)(void);
void (*get_smp_config)(unsigned int early);
};