From 40a085c41dc3d5991fdf90ed2557cc06cce0590a Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Wed, 27 Jul 2005 14:14:39 -0700
Subject: [PATCH 1/2] [SPARC]: Add inotify syscall entries.
Signed-off-by: David S. Miller <davem@davemloft.net>
---
arch/sparc/kernel/systbls.S | 4 ++--
arch/sparc64/kernel/systbls.S | 8 ++++----
include/asm-sparc/unistd.h | 6 +++---
include/asm-sparc64/unistd.h | 6 +++---
4 files changed, 12 insertions(+), 12 deletions(-)
diff --git a/arch/sparc/kernel/systbls.S b/arch/sparc/kernel/systbls.S
index 025f4516e651..e457a40838fc 100644
--- a/arch/sparc/kernel/systbls.S
+++ b/arch/sparc/kernel/systbls.S
@@ -48,8 +48,8 @@ sys_call_table:
/*135*/ .long sys_nis_syscall, sys_mkdir, sys_rmdir, sys_utimes, sys_stat64
/*140*/ .long sys_sendfile64, sys_nis_syscall, sys_futex, sys_gettid, sys_getrlimit
/*145*/ .long sys_setrlimit, sys_pivot_root, sys_prctl, sys_pciconfig_read, sys_pciconfig_write
-/*150*/ .long sys_nis_syscall, sys_nis_syscall, sys_nis_syscall, sys_poll, sys_getdents64
-/*155*/ .long sys_fcntl64, sys_ni_syscall, sys_statfs, sys_fstatfs, sys_oldumount
+/*150*/ .long sys_nis_syscall, sys_inotify_init, sys_inotify_add_watch, sys_poll, sys_getdents64
+/*155*/ .long sys_fcntl64, sys_inotify_rm_watch, sys_statfs, sys_fstatfs, sys_oldumount
/*160*/ .long sys_sched_setaffinity, sys_sched_getaffinity, sys_getdomainname, sys_setdomainname, sys_nis_syscall
/*165*/ .long sys_quotactl, sys_set_tid_address, sys_mount, sys_ustat, sys_setxattr
/*170*/ .long sys_lsetxattr, sys_fsetxattr, sys_getxattr, sys_lgetxattr, sys_getdents
diff --git a/arch/sparc64/kernel/systbls.S b/arch/sparc64/kernel/systbls.S
index bceb91a8a2bd..53eaf2345fe9 100644
--- a/arch/sparc64/kernel/systbls.S
+++ b/arch/sparc64/kernel/systbls.S
@@ -50,8 +50,8 @@ sys_call_table32:
.word sys_nis_syscall, sys32_mkdir, sys_rmdir, sys32_utimes, compat_sys_stat64
/*140*/ .word sys32_sendfile64, sys_nis_syscall, sys32_futex, sys_gettid, compat_sys_getrlimit
.word compat_sys_setrlimit, sys_pivot_root, sys32_prctl, sys_pciconfig_read, sys_pciconfig_write
-/*150*/ .word sys_nis_syscall, sys_nis_syscall, sys_nis_syscall, sys_poll, sys_getdents64
- .word compat_sys_fcntl64, sys_ni_syscall, compat_sys_statfs, compat_sys_fstatfs, sys_oldumount
+/*150*/ .word sys_nis_syscall, sys_inotify_init, sys_inotify_add_watch, sys_poll, sys_getdents64
+ .word compat_sys_fcntl64, sys_inotify_rm_watch, compat_sys_statfs, compat_sys_fstatfs, sys_oldumount
/*160*/ .word compat_sys_sched_setaffinity, compat_sys_sched_getaffinity, sys32_getdomainname, sys32_setdomainname, sys_nis_syscall
.word sys_quotactl, sys_set_tid_address, compat_sys_mount, sys_ustat, sys32_setxattr
/*170*/ .word sys32_lsetxattr, sys32_fsetxattr, sys_getxattr, sys_lgetxattr, compat_sys_getdents
@@ -116,8 +116,8 @@ sys_call_table:
.word sys_socketpair, sys_mkdir, sys_rmdir, sys_utimes, sys_stat64
/*140*/ .word sys_sendfile64, sys_getpeername, sys_futex, sys_gettid, sys_getrlimit
.word sys_setrlimit, sys_pivot_root, sys_prctl, sys_pciconfig_read, sys_pciconfig_write
-/*150*/ .word sys_getsockname, sys_nis_syscall, sys_nis_syscall, sys_poll, sys_getdents64
- .word sys_nis_syscall, sys_ni_syscall, sys_statfs, sys_fstatfs, sys_oldumount
+/*150*/ .word sys_getsockname, sys_inotify_init, sys_inotify_add_watch, sys_poll, sys_getdents64
+ .word sys_nis_syscall, sys_inotify_rm_watch, sys_statfs, sys_fstatfs, sys_oldumount
/*160*/ .word sys_sched_setaffinity, sys_sched_getaffinity, sys_getdomainname, sys_setdomainname, sys_utrap_install
.word sys_quotactl, sys_set_tid_address, sys_mount, sys_ustat, sys_setxattr
/*170*/ .word sys_lsetxattr, sys_fsetxattr, sys_getxattr, sys_lgetxattr, sys_getdents
diff --git a/include/asm-sparc/unistd.h b/include/asm-sparc/unistd.h
index aee17d7e2e44..58dba518239e 100644
--- a/include/asm-sparc/unistd.h
+++ b/include/asm-sparc/unistd.h
@@ -167,12 +167,12 @@
#define __NR_pciconfig_read 148 /* ENOSYS under SunOS */
#define __NR_pciconfig_write 149 /* ENOSYS under SunOS */
#define __NR_getsockname 150 /* Common */
-/* #define __NR_getmsg 151 SunOS Specific */
-/* #define __NR_putmsg 152 SunOS Specific */
+#define __NR_inotify_init 151 /* Linux specific */
+#define __NR_inotify_add_watch 152 /* Linux specific */
#define __NR_poll 153 /* Common */
#define __NR_getdents64 154 /* Linux specific */
#define __NR_fcntl64 155 /* Linux sparc32 Specific */
-/* #define __NR_getdirentires 156 SunOS Specific */
+#define __NR_inotify_rm_watch 156 /* Linux specific */
#define __NR_statfs 157 /* Common */
#define __NR_fstatfs 158 /* Common */
#define __NR_umount 159 /* Common */
diff --git a/include/asm-sparc64/unistd.h b/include/asm-sparc64/unistd.h
index f59144c6b76a..51ec2879b881 100644
--- a/include/asm-sparc64/unistd.h
+++ b/include/asm-sparc64/unistd.h
@@ -167,12 +167,12 @@
#define __NR_pciconfig_read 148 /* ENOSYS under SunOS */
#define __NR_pciconfig_write 149 /* ENOSYS under SunOS */
#define __NR_getsockname 150 /* Common */
-/* #define __NR_getmsg 151 SunOS Specific */
-/* #define __NR_putmsg 152 SunOS Specific */
+#define __NR_inotify_init 151 /* Linux specific */
+#define __NR_inotify_add_watch 152 /* Linux specific */
#define __NR_poll 153 /* Common */
#define __NR_getdents64 154 /* Linux specific */
/* #define __NR_fcntl64 155 Linux sparc32 Specific */
-/* #define __NR_getdirentries 156 SunOS Specific */
+#define __NR_inotify_rm_watch 156 /* Linux specific */
#define __NR_statfs 157 /* Common */
#define __NR_fstatfs 158 /* Common */
#define __NR_umount 159 /* Common */
From 48b0e5487fcdcb3421bda67666277348b2bd2661 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Wed, 27 Jul 2005 16:08:44 -0700
Subject: [PATCH 2/2] [SPARC64]: Fix ugly dependency on NR_CPUS being a
power-of-2.
The page->flags D-cache dirty state tracking depended upon
NR_CPUS being a power-of-2 via it's "NR_CPUS - 1" masking.
Fix that to use a fixed (256 - 1) mask as that is the limit
imposed by thread_info->cpu which is a "u8".
Finally, add a compile time check that NR_CPUS is not greater
than 256.
Signed-off-by: David S. Miller <davem@davemloft.net>
---
arch/sparc64/mm/init.c | 23 +++++++++++++++++------
1 file changed, 17 insertions(+), 6 deletions(-)
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 8fc413cb6acd..3fbaf342a452 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -121,15 +121,24 @@ __inline__ void flush_dcache_page_impl(struct page *page)
}
#define PG_dcache_dirty PG_arch_1
+#define PG_dcache_cpu_shift 24
+#define PG_dcache_cpu_mask (256 - 1)
+
+#if NR_CPUS > 256
+#error D-cache dirty tracking and thread_info->cpu need fixing for > 256 cpus
+#endif
#define dcache_dirty_cpu(page) \
- (((page)->flags >> 24) & (NR_CPUS - 1UL))
+ (((page)->flags >> PG_dcache_cpu_shift) & PG_dcache_cpu_mask)
static __inline__ void set_dcache_dirty(struct page *page, int this_cpu)
{
unsigned long mask = this_cpu;
- unsigned long non_cpu_bits = ~((NR_CPUS - 1UL) << 24UL);
- mask = (mask << 24) | (1UL << PG_dcache_dirty);
+ unsigned long non_cpu_bits;
+
+ non_cpu_bits = ~(PG_dcache_cpu_mask << PG_dcache_cpu_shift);
+ mask = (mask << PG_dcache_cpu_shift) | (1UL << PG_dcache_dirty);
+
__asm__ __volatile__("1:\n\t"
"ldx [%2], %%g7\n\t"
"and %%g7, %1, %%g1\n\t"
@@ -151,7 +160,7 @@ static __inline__ void clear_dcache_dirty_cpu(struct page *page, unsigned long c
__asm__ __volatile__("! test_and_clear_dcache_dirty\n"
"1:\n\t"
"ldx [%2], %%g7\n\t"
- "srlx %%g7, 24, %%g1\n\t"
+ "srlx %%g7, %4, %%g1\n\t"
"and %%g1, %3, %%g1\n\t"
"cmp %%g1, %0\n\t"
"bne,pn %%icc, 2f\n\t"
@@ -164,7 +173,8 @@ static __inline__ void clear_dcache_dirty_cpu(struct page *page, unsigned long c
"2:"
: /* no outputs */
: "r" (cpu), "r" (mask), "r" (&page->flags),
- "i" (NR_CPUS - 1UL)
+ "i" (PG_dcache_cpu_mask),
+ "i" (PG_dcache_cpu_shift)
: "g1", "g7");
}
@@ -180,7 +190,8 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t p
if (pfn_valid(pfn) &&
(page = pfn_to_page(pfn), page_mapping(page)) &&
((pg_flags = page->flags) & (1UL << PG_dcache_dirty))) {
- int cpu = ((pg_flags >> 24) & (NR_CPUS - 1UL));
+ int cpu = ((pg_flags >> PG_dcache_cpu_shift) &
+ PG_dcache_cpu_mask);
int this_cpu = get_cpu();
/* This is just to optimize away some function calls