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| author | Prasanna S Panchamukhi <prasanna@in.ibm.com> | 2005-09-06 15:19:30 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-07 16:58:00 -0700 |
| commit | 05e14cb3bafabbf08216ab5566f3cd687eba9723 (patch) | |
| tree | 6320a3e9193c474571401b2c279b1ee176c29c27 /arch/sparc64/mm | |
| parent | 1f7ad57b75ab0fba27455c7344a6ab7aa6bd90c5 (diff) | |
| download | op-kernel-dev-05e14cb3bafabbf08216ab5566f3cd687eba9723.zip op-kernel-dev-05e14cb3bafabbf08216ab5566f3cd687eba9723.tar.gz | |
[PATCH] Kprobes: prevent possible race conditions sparc64 changes
This patch contains the sparc64 architecture specific changes to prevent the
possible race conditions.
Signed-off-by: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/sparc64/mm')
| -rw-r--r-- | arch/sparc64/mm/fault.c | 8 | ||||
| -rw-r--r-- | arch/sparc64/mm/init.c | 3 | ||||
| -rw-r--r-- | arch/sparc64/mm/ultra.S | 2 |
3 files changed, 9 insertions, 4 deletions
diff --git a/arch/sparc64/mm/fault.c b/arch/sparc64/mm/fault.c index 52e9375..db1e331 100644 --- a/arch/sparc64/mm/fault.c +++ b/arch/sparc64/mm/fault.c @@ -18,6 +18,7 @@ #include <linux/smp_lock.h> #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/kprobes.h> #include <asm/page.h> #include <asm/pgtable.h> @@ -117,8 +118,9 @@ unsigned long __init prom_probe_memory (void) return tally; } -static void unhandled_fault(unsigned long address, struct task_struct *tsk, - struct pt_regs *regs) +static void __kprobes unhandled_fault(unsigned long address, + struct task_struct *tsk, + struct pt_regs *regs) { if ((unsigned long) address < PAGE_SIZE) { printk(KERN_ALERT "Unable to handle kernel NULL " @@ -304,7 +306,7 @@ cannot_handle: unhandled_fault (address, current, regs); } -asmlinkage void do_sparc64_fault(struct pt_regs *regs) +asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs) { struct mm_struct *mm = current->mm; struct vm_area_struct *vma; diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c index 3fbaf34..fdb1ebb 100644 --- a/arch/sparc64/mm/init.c +++ b/arch/sparc64/mm/init.c @@ -19,6 +19,7 @@ #include <linux/pagemap.h> #include <linux/fs.h> #include <linux/seq_file.h> +#include <linux/kprobes.h> #include <asm/head.h> #include <asm/system.h> @@ -250,7 +251,7 @@ out: put_cpu(); } -void flush_icache_range(unsigned long start, unsigned long end) +void __kprobes flush_icache_range(unsigned long start, unsigned long end) { /* Cheetah has coherent I-cache. */ if (tlb_type == spitfire) { diff --git a/arch/sparc64/mm/ultra.S b/arch/sparc64/mm/ultra.S index 8dfa825..78beff3 100644 --- a/arch/sparc64/mm/ultra.S +++ b/arch/sparc64/mm/ultra.S @@ -119,6 +119,7 @@ __spitfire_flush_tlb_mm_slow: #else #error unsupported PAGE_SIZE #endif + .section .kprobes.text .align 32 .globl __flush_icache_page __flush_icache_page: /* %o0 = phys_page */ @@ -201,6 +202,7 @@ dflush4:stxa %g0, [%o4] ASI_DCACHE_TAG nop #endif /* DCACHE_ALIASING_POSSIBLE */ + .previous .text .align 32 __prefill_dtlb: rdpr %pstate, %g7 |
