uprobe_consumer->filter() is pointless in its current form, kill it.
We will add it back, but with the different signature/semantics. Perhaps
we will even re-introduce the callsite in handler_chain(), but not to
just skip uc->handler().
Signed-off-by: Oleg Nesterov <o...@redhat.com>
---
include/linux/uprobes.h | 5 -----
kernel/events/uprobes.c | 6 ++----
kernel/trace/trace_uprobe.c | 1 -
3 files changed, 2 insertions(+), 10 deletions(-)
diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h
index 4f628a6..83742b9 100644
--- a/include/linux/uprobes.h
+++ b/include/linux/uprobes.h
@@ -37,11 +37,6 @@ struct inode;
struct uprobe_consumer {
int (*handler)(struct uprobe_consumer *self, struct pt_regs *regs);
- /*
- * filter is optional; If a filter exists, handler is run
- * if and only if filter returns true.
- */
- bool (*filter)(struct uprobe_consumer *self, struct task_struct *task);
struct uprobe_consumer *next;
};
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index d8e930a..e761974 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -477,10 +477,8 @@ static void handler_chain(struct uprobe *uprobe, struct
pt_regs *regs)
return;
down_read(&uprobe->consumer_rwsem);
- for (uc = uprobe->consumers; uc; uc = uc->next) {
- if (!uc->filter || uc->filter(uc, current))
- uc->handler(uc, regs);
- }
+ for (uc = uprobe->consumers; uc; uc = uc->next)
+ uc->handler(uc, regs);
up_read(&uprobe->consumer_rwsem);
}
diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
index 03003cd..38eee92 100644
--- a/kernel/trace/trace_uprobe.c
+++ b/kernel/trace/trace_uprobe.c
@@ -546,7 +546,6 @@ static int probe_event_enable(struct trace_uprobe *tu, int
flag)
return -EINTR;
utc->cons.handler = uprobe_dispatcher;
- utc->cons.filter = NULL;
ret = uprobe_register(tu->inode, tu->offset, &utc->cons);
if (ret) {
kfree(utc);
--
1.5.5.1
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