Commit-ID: e8440c1458ba571bc3fac8a6beb53ff604199f5b
Gitweb: http://git.kernel.org/tip/e8440c1458ba571bc3fac8a6beb53ff604199f5b
Author: Josh Stone <jistone@xxxxxxxxxx>
AuthorDate: Sun, 13 Jan 2013 19:03:34 +0100
Committer: Oleg Nesterov <oleg@xxxxxxxxxx>
CommitDate: Fri, 8 Feb 2013 17:47:13 +0100
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@xxxxxxxxxx>
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
---
kernel/events/uprobes.c | 3 +++
kernel/ptrace.c | 6 ++++++
2 files changed, 9 insertions(+)
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index f6c7062..221fc58 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 6cbeaae..acbd284 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,
--
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