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[PATCH] x86: add frame annotation for call_rwsem_down_write_failed_killable

From Michal Hocko <mhocko@kernel.org>
Newsgroups linux.kernel
Subject [PATCH] x86: add frame annotation for call_rwsem_down_write_failed_killable
Date 2016-04-13 12:00 +0200
Message-ID <rnpKy-7Mh-19@gated-at.bofh.it> (permalink)
References <rljSW-5SJ-15@gated-at.bofh.it>
Organization linux.* mail to news gateway

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From: Michal Hocko <mhocko@suse.com>

3387a535ce62 ("x86/asm: Create stack frames in rwsem functions") has
added FRAME_{BEGIN,END} annotations to rwsem asm stubs. The patch
which has added call_rwsem_down_write_failed_killable was based on an
older tree so it didn't know about annotations. Let's add them.

Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Michal Hocko <mhocko@suse.com>
---

Hi Ingo,
please apply this on top of [1] when merging to tip/locking/rwsem.
Thanks!

[1] http://lkml.kernel.org/r/1460041951-22347-11-git-send-email-mhocko@kernel.org
 arch/x86/lib/rwsem.S | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/lib/rwsem.S b/arch/x86/lib/rwsem.S
index 4534a7e912f3..a37462a23546 100644
--- a/arch/x86/lib/rwsem.S
+++ b/arch/x86/lib/rwsem.S
@@ -107,10 +107,12 @@ ENTRY(call_rwsem_down_write_failed)
 ENDPROC(call_rwsem_down_write_failed)
 
 ENTRY(call_rwsem_down_write_failed_killable)
+	FRAME_BEGIN
 	save_common_regs
 	movq %rax,%rdi
 	call rwsem_down_write_failed_killable
 	restore_common_regs
+	FRAME_END
 	ret
 ENDPROC(call_rwsem_down_write_failed_killable)
 
-- 
2.8.0.rc3

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Thread

[PATCH 10/11] x86, rwsem: provide __down_write_killable Michal Hocko <mhocko@kernel.org> - 2016-04-07 17:20 +0200
  Re: [PATCH 10/11] x86, rwsem: provide __down_write_killable Ingo Molnar <mingo@kernel.org> - 2016-04-13 11:10 +0200
    Re: [PATCH 10/11] x86, rwsem: provide __down_write_killable Michal Hocko <mhocko@kernel.org> - 2016-04-13 11:20 +0200
      Re: [PATCH 10/11] x86, rwsem: provide __down_write_killable Ingo Molnar <mingo@kernel.org> - 2016-04-13 11:30 +0200
        Re: [PATCH 10/11] x86, rwsem: provide __down_write_killable Michal Hocko <mhocko@kernel.org> - 2016-04-13 15:00 +0200
  [PATCH] x86: add frame annotation for call_rwsem_down_write_failed_killable Michal Hocko <mhocko@kernel.org> - 2016-04-13 12:00 +0200

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