[tip:perf/core] kprobes/x86: Remove unneeded arch_within_kprobe_blacklist from x86

[tip-bot for Masami Hiramatsu <tipbot@zytor.com>]

Commit-ID:  8162b3d1a728cf63abf54be4167dd9beec5d9d37
Gitweb:     https://git.kernel.org/tip/8162b3d1a728cf63abf54be4167dd9beec5d9d37
Author:     Masami Hiramatsu <mhiramat@kernel.org>
AuthorDate: Mon, 17 Dec 2018 17:21:53 +0900
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Mon, 17 Dec 2018 17:48:40 +0100

kprobes/x86: Remove unneeded arch_within_kprobe_blacklist from x86

Remove x86 specific arch_within_kprobe_blacklist().

Since we have already added all blacklisted symbols to the
kprobe blacklist by arch_populate_kprobe_blacklist(),
we don't need arch_within_kprobe_blacklist() on x86
anymore.

Tested-by: Andrea Righi <righi.andrea@gmail.com>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yonghong Song <yhs@fb.com>
Link: http://lkml.kernel.org/r/154503491354.26176.13903264647254766066.stgit@devbox
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 arch/x86/kernel/kprobes/core.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
index 6011a4a90f0a..d5f88fe57064 100644
--- a/arch/x86/kernel/kprobes/core.c
+++ b/arch/x86/kernel/kprobes/core.c
@@ -1026,14 +1026,6 @@ int kprobe_fault_handler(struct pt_regs *regs, int trapnr)
 }
 NOKPROBE_SYMBOL(kprobe_fault_handler);
 
-bool arch_within_kprobe_blacklist(unsigned long addr)
-{
-	return  (addr >= (unsigned long)__kprobes_text_start &&
-		 addr < (unsigned long)__kprobes_text_end) ||
-		(addr >= (unsigned long)__entry_text_start &&
-		 addr < (unsigned long)__entry_text_end);
-}
-
 int __init arch_populate_kprobe_blacklist(void)
 {
 	return kprobe_add_area_blacklist((unsigned long)__entry_text_start,