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From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	mikey@neuling.org
Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v4 13/13] powerpc/ptrace: move ptrace_triggered() into hw_breakpoint.c
Date: Thu, 27 Feb 2020 11:49:10 +0000 (UTC)	[thread overview]
Message-ID: <d45c91cf5f83424b8f3989b7ead28c50d8d765a9.1582803998.git.christophe.leroy@c-s.fr> (raw)
In-Reply-To: <cover.1582803998.git.christophe.leroy@c-s.fr>

ptrace_triggered() is declared in asm/hw_breakpoint.h and
only needed when CONFIG_HW_BREAKPOINT is set, so move it
into hw_breakpoint.c

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
v4: removing inclusing of hw_breakpoint.h now. Previously it was done too early.
---
 arch/powerpc/kernel/hw_breakpoint.c | 16 ++++++++++++++++
 arch/powerpc/kernel/ptrace/ptrace.c | 19 -------------------
 2 files changed, 16 insertions(+), 19 deletions(-)

diff --git a/arch/powerpc/kernel/hw_breakpoint.c b/arch/powerpc/kernel/hw_breakpoint.c
index 2462cd7c565c..2c0be9d941cf 100644
--- a/arch/powerpc/kernel/hw_breakpoint.c
+++ b/arch/powerpc/kernel/hw_breakpoint.c
@@ -427,3 +427,19 @@ void hw_breakpoint_pmu_read(struct perf_event *bp)
 {
 	/* TODO */
 }
+
+void ptrace_triggered(struct perf_event *bp,
+		      struct perf_sample_data *data, struct pt_regs *regs)
+{
+	struct perf_event_attr attr;
+
+	/*
+	 * Disable the breakpoint request here since ptrace has defined a
+	 * one-shot behaviour for breakpoint exceptions in PPC64.
+	 * The SIGTRAP signal is generated automatically for us in do_dabr().
+	 * We don't have to do anything about that here
+	 */
+	attr = bp->attr;
+	attr.disabled = true;
+	modify_user_hw_breakpoint(bp, &attr);
+}
diff --git a/arch/powerpc/kernel/ptrace/ptrace.c b/arch/powerpc/kernel/ptrace/ptrace.c
index a44f6e5e05ff..f6e51be47c6e 100644
--- a/arch/powerpc/kernel/ptrace/ptrace.c
+++ b/arch/powerpc/kernel/ptrace/ptrace.c
@@ -18,7 +18,6 @@
 #include <linux/regset.h>
 #include <linux/tracehook.h>
 #include <linux/audit.h>
-#include <linux/hw_breakpoint.h>
 #include <linux/context_tracking.h>
 #include <linux/syscalls.h>
 
@@ -31,24 +30,6 @@
 
 #include "ptrace-decl.h"
 
-#ifdef CONFIG_HAVE_HW_BREAKPOINT
-void ptrace_triggered(struct perf_event *bp,
-		      struct perf_sample_data *data, struct pt_regs *regs)
-{
-	struct perf_event_attr attr;
-
-	/*
-	 * Disable the breakpoint request here since ptrace has defined a
-	 * one-shot behaviour for breakpoint exceptions in PPC64.
-	 * The SIGTRAP signal is generated automatically for us in do_dabr().
-	 * We don't have to do anything about that here
-	 */
-	attr = bp->attr;
-	attr.disabled = true;
-	modify_user_hw_breakpoint(bp, &attr);
-}
-#endif /* CONFIG_HAVE_HW_BREAKPOINT */
-
 /*
  * Called by kernel/ptrace.c when detaching..
  *
-- 
2.25.0


  parent reply	other threads:[~2020-02-27 11:49 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-27 11:48 [PATCH v4 00/13] Reduce ifdef mess in ptrace Christophe Leroy
2020-02-27 11:48 ` [PATCH v4 01/13] powerpc: move ptrace into a subdirectory Christophe Leroy
2020-02-27 11:48 ` [PATCH v4 02/13] powerpc/ptrace: remove unused header includes Christophe Leroy
2020-02-27 11:48 ` [PATCH v4 03/13] powerpc/ptrace: drop unnecessary #ifdefs CONFIG_PPC64 Christophe Leroy
2020-02-27 11:49 ` [PATCH v4 04/13] powerpc/ptrace: drop PARAMETER_SAVE_AREA_OFFSET Christophe Leroy
2020-02-27 11:49 ` [PATCH v4 05/13] powerpc/ptrace: split out VSX related functions Christophe Leroy
2020-02-27 11:49 ` [PATCH v4 06/13] powerpc/ptrace: split out ALTIVEC " Christophe Leroy
2020-02-28  4:08   ` kbuild test robot
2020-02-27 11:49 ` [PATCH v4 07/13] powerpc/ptrace: split out SPE " Christophe Leroy
2020-02-27 11:49 ` [PATCH v4 08/13] powerpc/ptrace: split out TRANSACTIONAL_MEM " Christophe Leroy
2020-02-27 11:49 ` [PATCH v4 09/13] powerpc/ptrace: move register viewing functions out of ptrace.c Christophe Leroy
2020-02-27 11:49 ` [PATCH v4 10/13] powerpc/ptrace: split out ADV_DEBUG_REGS related functions Christophe Leroy
2020-02-27 11:49 ` [PATCH v4 11/13] powerpc/ptrace: create ptrace_get_debugreg() Christophe Leroy
2020-02-27 11:49 ` [PATCH v4 12/13] powerpc/ptrace: create ppc_gethwdinfo() Christophe Leroy
2020-02-27 11:49 ` Christophe Leroy [this message]
2020-02-27 17:09   ` [PATCH v4 13/13] powerpc/ptrace: move ptrace_triggered() into hw_breakpoint.c Christophe Leroy
2020-02-27 22:16     ` Michael Ellerman
2020-02-28  3:59       ` Andrew Donnellan
2020-02-28  4:02         ` Russell Currey

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