aboutsummaryrefslogtreecommitdiff
path: root/arch/sparc64
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc64')
-rw-r--r--arch/sparc64/Kconfig14
-rw-r--r--arch/sparc64/defconfig10
-rw-r--r--arch/sparc64/kernel/ktlb.S8
-rw-r--r--arch/sparc64/kernel/process.c9
-rw-r--r--arch/sparc64/kernel/systbls.S9
-rw-r--r--arch/sparc64/kernel/tsb.S1
-rw-r--r--arch/sparc64/lib/NGbzero.S1
-rw-r--r--arch/sparc64/lib/NGmemcpy.S2
-rw-r--r--arch/sparc64/lib/NGpage.S2
-rw-r--r--arch/sparc64/mm/hugetlbpage.c3
-rw-r--r--arch/sparc64/mm/init.c30
11 files changed, 66 insertions, 23 deletions
diff --git a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig
index f75a686ba64..1a6348b565f 100644
--- a/arch/sparc64/Kconfig
+++ b/arch/sparc64/Kconfig
@@ -136,18 +136,6 @@ config SMP
If you don't know what to do here, say N.
-config PREEMPT
- bool "Preemptible Kernel"
- help
- This option reduces the latency of the kernel when reacting to
- real-time or interactive events by allowing a low priority process to
- be preempted even if it is in kernel mode executing a system call.
- This allows applications to run more reliably even when the system is
- under load.
-
- Say Y here if you are building a kernel for a desktop, embedded
- or real-time system. Say N if you are unsure.
-
config NR_CPUS
int "Maximum number of CPUs (2-64)"
range 2 64
@@ -399,6 +387,8 @@ config SCHED_SMT
when dealing with UltraSPARC cpus at a cost of slightly increased
overhead in some places. If unsure say N here.
+source "kernel/Kconfig.preempt"
+
config CMDLINE_BOOL
bool "Default bootloader kernel arguments"
diff --git a/arch/sparc64/defconfig b/arch/sparc64/defconfig
index 860b8b60526..120c9c33b7a 100644
--- a/arch/sparc64/defconfig
+++ b/arch/sparc64/defconfig
@@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
-# Linux kernel version: 2.6.21-rc2
-# Wed Feb 28 09:50:51 2007
+# Linux kernel version: 2.6.21-rc4
+# Sat Mar 17 14:18:44 2007
#
CONFIG_SPARC=y
CONFIG_SPARC64=y
@@ -50,6 +50,7 @@ CONFIG_POSIX_MQUEUE=y
# CONFIG_IKCONFIG is not set
CONFIG_SYSFS_DEPRECATED=y
CONFIG_RELAY=y
+# CONFIG_BLK_DEV_INITRD is not set
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_SYSCTL=y
# CONFIG_EMBEDDED is not set
@@ -108,7 +109,6 @@ CONFIG_GENERIC_HARDIRQS=y
# General machine setup
#
# CONFIG_SMP is not set
-# CONFIG_PREEMPT is not set
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_TABLE=m
# CONFIG_CPU_FREQ_DEBUG is not set
@@ -165,6 +165,9 @@ CONFIG_BINFMT_ELF32=y
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_MISC=m
CONFIG_SOLARIS_EMUL=y
+# CONFIG_PREEMPT_NONE is not set
+CONFIG_PREEMPT_VOLUNTARY=y
+# CONFIG_PREEMPT is not set
# CONFIG_CMDLINE_BOOL is not set
#
@@ -340,7 +343,6 @@ CONFIG_BLK_DEV_NBD=m
# CONFIG_BLK_DEV_SX8 is not set
# CONFIG_BLK_DEV_UB is not set
# CONFIG_BLK_DEV_RAM is not set
-# CONFIG_BLK_DEV_INITRD is not set
CONFIG_CDROM_PKTCDVD=m
CONFIG_CDROM_PKTCDVD_BUFFERS=8
CONFIG_CDROM_PKTCDVD_WCACHE=y
diff --git a/arch/sparc64/kernel/ktlb.S b/arch/sparc64/kernel/ktlb.S
index e492db845ea..d4024ac0d61 100644
--- a/arch/sparc64/kernel/ktlb.S
+++ b/arch/sparc64/kernel/ktlb.S
@@ -138,9 +138,15 @@ kvmap_dtlb_4v:
brgez,pn %g4, kvmap_dtlb_nonlinear
nop
+#ifdef CONFIG_DEBUG_PAGEALLOC
+ /* Index through the base page size TSB even for linear
+ * mappings when using page allocation debugging.
+ */
+ KERN_TSB_LOOKUP_TL1(%g4, %g6, %g5, %g1, %g2, %g3, kvmap_dtlb_load)
+#else
/* Correct TAG_TARGET is already in %g6, check 4mb TSB. */
KERN_TSB4M_LOOKUP_TL1(%g6, %g5, %g1, %g2, %g3, kvmap_dtlb_load)
-
+#endif
/* TSB entry address left in %g1, lookup linear PTE.
* Must preserve %g1 and %g6 (TAG).
*/
diff --git a/arch/sparc64/kernel/process.c b/arch/sparc64/kernel/process.c
index 7d75cd4eb29..b291060c25a 100644
--- a/arch/sparc64/kernel/process.c
+++ b/arch/sparc64/kernel/process.c
@@ -413,8 +413,13 @@ void flush_thread(void)
struct thread_info *t = current_thread_info();
struct mm_struct *mm;
- if (t->flags & _TIF_ABI_PENDING)
- t->flags ^= (_TIF_ABI_PENDING | _TIF_32BIT);
+ if (test_ti_thread_flag(t, TIF_ABI_PENDING)) {
+ clear_ti_thread_flag(t, TIF_ABI_PENDING);
+ if (test_ti_thread_flag(t, TIF_32BIT))
+ clear_ti_thread_flag(t, TIF_32BIT);
+ else
+ set_ti_thread_flag(t, TIF_32BIT);
+ }
mm = t->task->mm;
if (mm)
diff --git a/arch/sparc64/kernel/systbls.S b/arch/sparc64/kernel/systbls.S
index 948b7d2d587..aaeb5e06735 100644
--- a/arch/sparc64/kernel/systbls.S
+++ b/arch/sparc64/kernel/systbls.S
@@ -79,7 +79,8 @@ sys_call_table32:
.word sys_mkdirat, sys_mknodat, sys_fchownat, compat_sys_futimesat, compat_sys_fstatat64
/*290*/ .word sys_unlinkat, sys_renameat, sys_linkat, sys_symlinkat, sys_readlinkat
.word sys_fchmodat, sys_faccessat, compat_sys_pselect6, compat_sys_ppoll, sys_unshare
-/*300*/ .word compat_sys_set_robust_list, compat_sys_get_robust_list, compat_sys_migrate_pages
+/*300*/ .word compat_sys_set_robust_list, compat_sys_get_robust_list, compat_sys_migrate_pages, compat_sys_mbind, compat_sys_get_mempolicy
+ .word compat_sys_set_mempolicy, compat_sys_kexec_load, compat_sys_move_pages, sys_getcpu, compat_sys_epoll_pwait
#endif /* CONFIG_COMPAT */
@@ -149,7 +150,8 @@ sys_call_table:
.word sys_mkdirat, sys_mknodat, sys_fchownat, sys_futimesat, sys_fstatat64
/*290*/ .word sys_unlinkat, sys_renameat, sys_linkat, sys_symlinkat, sys_readlinkat
.word sys_fchmodat, sys_faccessat, sys_pselect6, sys_ppoll, sys_unshare
-/*300*/ .word sys_set_robust_list, sys_get_robust_list, sys_migrate_pages
+/*300*/ .word sys_set_robust_list, sys_get_robust_list, sys_migrate_pages, sys_mbind, sys_get_mempolicy
+ .word sys_set_mempolicy, sys_kexec_load, sys_move_pages, sys_getcpu, sys_epoll_pwait
#if defined(CONFIG_SUNOS_EMUL) || defined(CONFIG_SOLARIS_EMUL) || \
defined(CONFIG_SOLARIS_EMUL_MODULE)
@@ -264,5 +266,8 @@ sunos_sys_table:
.word sunos_nosys, sunos_nosys, sunos_nosys
.word sunos_nosys
/*300*/ .word sunos_nosys, sunos_nosys, sunos_nosys
+ .word sunos_nosys, sunos_nosys, sunos_nosys
+ .word sunos_nosys, sunos_nosys, sunos_nosys
+ .word sunos_nosys
#endif
diff --git a/arch/sparc64/kernel/tsb.S b/arch/sparc64/kernel/tsb.S
index eedf94fa566..10adb2fb8ff 100644
--- a/arch/sparc64/kernel/tsb.S
+++ b/arch/sparc64/kernel/tsb.S
@@ -546,6 +546,7 @@ NGtsb_init:
subcc %o1, 0x100, %o1
bne,pt %xcc, 1b
add %o0, 0x100, %o0
+ membar #Sync
retl
wr %g2, 0x0, %asi
.size NGtsb_init, .-NGtsb_init
diff --git a/arch/sparc64/lib/NGbzero.S b/arch/sparc64/lib/NGbzero.S
index e86baece5cc..f10e4529ee3 100644
--- a/arch/sparc64/lib/NGbzero.S
+++ b/arch/sparc64/lib/NGbzero.S
@@ -88,6 +88,7 @@ NGbzero_loop:
bne,pt %xcc, NGbzero_loop
add %o0, 64, %o0
+ membar #Sync
wr %o4, 0x0, %asi
brz,pn %o1, NGbzero_done
NGbzero_medium:
diff --git a/arch/sparc64/lib/NGmemcpy.S b/arch/sparc64/lib/NGmemcpy.S
index 8e522b3dc09..66063a9a66b 100644
--- a/arch/sparc64/lib/NGmemcpy.S
+++ b/arch/sparc64/lib/NGmemcpy.S
@@ -247,6 +247,8 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
/* fall through */
60:
+ membar #Sync
+
/* %o2 contains any final bytes still needed to be copied
* over. If anything is left, we copy it one byte at a time.
*/
diff --git a/arch/sparc64/lib/NGpage.S b/arch/sparc64/lib/NGpage.S
index 7d7c3bb8dcb..8ce3a0c9c53 100644
--- a/arch/sparc64/lib/NGpage.S
+++ b/arch/sparc64/lib/NGpage.S
@@ -41,6 +41,7 @@ NGcopy_user_page: /* %o0=dest, %o1=src, %o2=vaddr */
subcc %g7, 64, %g7
bne,pt %xcc, 1b
add %o0, 32, %o0
+ membar #Sync
retl
nop
@@ -63,6 +64,7 @@ NGclear_user_page: /* %o0=dest, %o1=vaddr */
subcc %g7, 64, %g7
bne,pt %xcc, 1b
add %o0, 32, %o0
+ membar #Sync
retl
nop
diff --git a/arch/sparc64/mm/hugetlbpage.c b/arch/sparc64/mm/hugetlbpage.c
index 33fd0b265e7..00677b5e1d7 100644
--- a/arch/sparc64/mm/hugetlbpage.c
+++ b/arch/sparc64/mm/hugetlbpage.c
@@ -248,6 +248,7 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
if (!pte_present(*ptep) && pte_present(entry))
mm->context.huge_pte_count++;
+ addr &= HPAGE_MASK;
for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) {
set_pte_at(mm, addr, ptep, entry);
ptep++;
@@ -266,6 +267,8 @@ pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
if (pte_present(entry))
mm->context.huge_pte_count--;
+ addr &= HPAGE_MASK;
+
for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) {
pte_clear(mm, addr, ptep);
addr += PAGE_SIZE;
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index b1a1ee0cc6b..f146071a4b2 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -59,8 +59,10 @@ unsigned long kern_linear_pte_xor[2] __read_mostly;
*/
unsigned long kpte_linear_bitmap[KPTE_BITMAP_BYTES / sizeof(unsigned long)];
+#ifndef CONFIG_DEBUG_PAGEALLOC
/* A special kernel TSB for 4MB and 256MB linear mappings. */
struct tsb swapper_4m_tsb[KERNEL_TSB4M_NENTRIES];
+#endif
#define MAX_BANKS 32
@@ -1301,7 +1303,12 @@ static void __init tsb_phys_patch(void)
}
/* Don't mark as init, we give this to the Hypervisor. */
-static struct hv_tsb_descr ktsb_descr[2];
+#ifndef CONFIG_DEBUG_PAGEALLOC
+#define NUM_KTSB_DESCR 2
+#else
+#define NUM_KTSB_DESCR 1
+#endif
+static struct hv_tsb_descr ktsb_descr[NUM_KTSB_DESCR];
extern struct tsb swapper_tsb[KERNEL_TSB_NENTRIES];
static void __init sun4v_ktsb_init(void)
@@ -1340,6 +1347,7 @@ static void __init sun4v_ktsb_init(void)
ktsb_descr[0].tsb_base = ktsb_pa;
ktsb_descr[0].resv = 0;
+#ifndef CONFIG_DEBUG_PAGEALLOC
/* Second KTSB for 4MB/256MB mappings. */
ktsb_pa = (kern_base +
((unsigned long)&swapper_4m_tsb[0] - KERNBASE));
@@ -1352,6 +1360,7 @@ static void __init sun4v_ktsb_init(void)
ktsb_descr[1].ctx_idx = 0;
ktsb_descr[1].tsb_base = ktsb_pa;
ktsb_descr[1].resv = 0;
+#endif
}
void __cpuinit sun4v_ktsb_register(void)
@@ -1364,7 +1373,7 @@ void __cpuinit sun4v_ktsb_register(void)
pa = kern_base + ((unsigned long)&ktsb_descr[0] - KERNBASE);
func = HV_FAST_MMU_TSB_CTX0;
- arg0 = 2;
+ arg0 = NUM_KTSB_DESCR;
arg1 = pa;
__asm__ __volatile__("ta %6"
: "=&r" (func), "=&r" (arg0), "=&r" (arg1)
@@ -1393,7 +1402,9 @@ void __init paging_init(void)
/* Invalidate both kernel TSBs. */
memset(swapper_tsb, 0x40, sizeof(swapper_tsb));
+#ifndef CONFIG_DEBUG_PAGEALLOC
memset(swapper_4m_tsb, 0x40, sizeof(swapper_4m_tsb));
+#endif
if (tlb_type == hypervisor)
sun4v_pgprot_init();
@@ -1725,8 +1736,13 @@ static void __init sun4u_pgprot_init(void)
pg_iobits = (_PAGE_VALID | _PAGE_PRESENT_4U | __DIRTY_BITS_4U |
__ACCESS_BITS_4U | _PAGE_E_4U);
+#ifdef CONFIG_DEBUG_PAGEALLOC
+ kern_linear_pte_xor[0] = (_PAGE_VALID | _PAGE_SZBITS_4U) ^
+ 0xfffff80000000000;
+#else
kern_linear_pte_xor[0] = (_PAGE_VALID | _PAGE_SZ4MB_4U) ^
0xfffff80000000000;
+#endif
kern_linear_pte_xor[0] |= (_PAGE_CP_4U | _PAGE_CV_4U |
_PAGE_P_4U | _PAGE_W_4U);
@@ -1769,13 +1785,23 @@ static void __init sun4v_pgprot_init(void)
_PAGE_E = _PAGE_E_4V;
_PAGE_CACHE = _PAGE_CACHE_4V;
+#ifdef CONFIG_DEBUG_PAGEALLOC
+ kern_linear_pte_xor[0] = (_PAGE_VALID | _PAGE_SZBITS_4V) ^
+ 0xfffff80000000000;
+#else
kern_linear_pte_xor[0] = (_PAGE_VALID | _PAGE_SZ4MB_4V) ^
0xfffff80000000000;
+#endif
kern_linear_pte_xor[0] |= (_PAGE_CP_4V | _PAGE_CV_4V |
_PAGE_P_4V | _PAGE_W_4V);
+#ifdef CONFIG_DEBUG_PAGEALLOC
+ kern_linear_pte_xor[1] = (_PAGE_VALID | _PAGE_SZBITS_4V) ^
+ 0xfffff80000000000;
+#else
kern_linear_pte_xor[1] = (_PAGE_VALID | _PAGE_SZ256MB_4V) ^
0xfffff80000000000;
+#endif
kern_linear_pte_xor[1] |= (_PAGE_CP_4V | _PAGE_CV_4V |
_PAGE_P_4V | _PAGE_W_4V);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-25 02:47:45 +0000