Messages in this thread Patch in this message | | | From | David Long <> | Subject | [PATCH 4/9] uprobes: allow arch-specific initialization | Date | Thu, 1 Aug 2013 19:45:48 -0400 |
| |
From: Rabin Vincent <rabin@rab.in>
Add a weak function for any architecture-specific initialization. ARM will use this to register the handlers for the undefined instructions it uses to implement uprobes.
Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: David A. Long <dave.long@linaro.org> --- include/linux/uprobes.h | 1 + kernel/events/uprobes.c | 10 ++++++++++ 2 files changed, 11 insertions(+)
diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h index f6287f0..6feae5d 100644 --- a/include/linux/uprobes.h +++ b/include/linux/uprobes.h @@ -135,6 +135,7 @@ extern int arch_uprobe_exception_notify(struct notifier_block *self, unsigned l extern void arch_uprobe_abort_xol(struct arch_uprobe *aup, struct pt_regs *regs); extern bool __weak arch_uprobe_ignore(struct arch_uprobe *aup, struct pt_regs *regs); extern void __weak arch_uprobe_xol_copy(struct arch_uprobe *auprobe, void *vaddr); +extern int __weak arch_uprobes_init(void); #else /* !CONFIG_UPROBES */ struct uprobes_state { }; diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index 64471bd..5004f6f 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -1862,8 +1862,14 @@ static struct notifier_block uprobe_exception_nb = { .priority = INT_MAX-1, /* notified after kprobes, kgdb */ }; +int __weak __init arch_uprobes_init(void) +{ + return 0; +} + static int __init init_uprobes(void) { + int ret; int i; for (i = 0; i < UPROBES_HASH_SZ; i++) @@ -1872,6 +1878,10 @@ static int __init init_uprobes(void) if (percpu_init_rwsem(&dup_mmap_sem)) return -ENOMEM; + ret = arch_uprobes_init(); + if (ret) + return ret; + return register_die_notifier(&uprobe_exception_nb); } module_init(init_uprobes); -- 1.8.1.2
| |