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Code Issues Releases Wiki Activity

powerpc/ptrace: move ptrace_triggered() into hw_breakpoint.c

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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>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/8402c516023da1371953a65af7df2008758ea0c4.1582848567.git.christophe.leroy@c-s.fr
This commit is contained in:
Christophe Leroy 2020-02-28 00:14:49 +00:00 committed by Michael Ellerman
parent da529d4739
commit ccbed90b82
2 changed files with 16 additions and 19 deletions
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16
arch/powerpc/kernel/hw_breakpoint.c
View file

@ -429,3 +429,19 @@ 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);
}

19
arch/powerpc/kernel/ptrace/ptrace.c
View file

@ -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..
*