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| author | Josh Stone <jistone@redhat.com> | 2013-01-13 19:03:34 +0100 |
|---|---|---|
| committer | Oleg Nesterov <oleg@redhat.com> | 2013-02-08 17:47:13 +0100 |
| commit | e8440c1458ba571bc3fac8a6beb53ff604199f5b (patch) | |
| tree | 59abbd23435cd341250a028b4fa06826b7133fbe | |
| parent | af4355e91f15812df8608925738c91be57c580dd (diff) | |
| download | linux-e8440c1458ba571bc3fac8a6beb53ff604199f5b.tar.bz2 | |
uprobes: Add exports for module use
The original pull message for uprobes (commit 654443e2) noted:
This tree includes uprobes support in 'perf probe' - but SystemTap
(and other tools) can take advantage of user probe points as well.
In order to actually be usable in module-based tools like SystemTap, the
interface needs to be exported. This patch first adds the obvious
exports for uprobe_register and uprobe_unregister. Then it also adds
one for task_user_regset_view, which is necessary to get the correct
state of userspace registers.
Signed-off-by: Josh Stone <jistone@redhat.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
| -rw-r--r-- | kernel/events/uprobes.c | 3 | ||||
| -rw-r--r-- | kernel/ptrace.c | 6 |
2 files changed, 9 insertions, 0 deletions
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index f6c7062fb950..221fc58f59e3 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -27,6 +27,7 @@ #include <linux/pagemap.h> /* read_mapping_page */ #include <linux/slab.h> #include <linux/sched.h> +#include <linux/export.h> #include <linux/rmap.h> /* anon_vma_prepare */ #include <linux/mmu_notifier.h> /* set_pte_at_notify */ #include <linux/swap.h> /* try_to_free_swap */ @@ -851,6 +852,7 @@ int uprobe_register(struct inode *inode, loff_t offset, struct uprobe_consumer * goto retry; return ret; } +EXPORT_SYMBOL_GPL(uprobe_register); /* * uprobe_unregister - unregister a already registered probe. @@ -871,6 +873,7 @@ void uprobe_unregister(struct inode *inode, loff_t offset, struct uprobe_consume up_write(&uprobe->register_rwsem); put_uprobe(uprobe); } +EXPORT_SYMBOL_GPL(uprobe_unregister); static int unapply_uprobe(struct uprobe *uprobe, struct mm_struct *mm) { diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 6cbeaae4406d..acbd28424d81 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -712,6 +712,12 @@ static int ptrace_regset(struct task_struct *task, int req, unsigned int type, kiov->iov_len, kiov->iov_base); } +/* + * This is declared in linux/regset.h and defined in machine-dependent + * code. We put the export here, near the primary machine-neutral use, + * to ensure no machine forgets it. + */ +EXPORT_SYMBOL_GPL(task_user_regset_view); #endif int ptrace_request(struct task_struct *child, long request, |