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| author | Ravi Bangoria <ravi.bangoria@linux.ibm.com> | 2020-09-02 09:59:41 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-09-15 22:13:19 +1000 |
| commit | edc8dd99b29e4d705c45e2a3a6c01b096ee056db (patch) | |
| tree | a4c11d255b80af1ef92b189c4a53b4c65ca7c113 /arch/powerpc/include/asm/hw_breakpoint.h | |
| parent | 9b6b7c680cc20971444d9f836e49fc98848bcd0a (diff) | |
| download | linux-edc8dd99b29e4d705c45e2a3a6c01b096ee056db.tar.bz2 | |
powerpc/watchpoint: Move DAWR detection logic outside of hw_breakpoint.c
Power10 hw has multiple DAWRs but hw doesn't tell which DAWR caused
the exception. So we have a sw logic to detect that in hw_breakpoint.c.
But hw_breakpoint.c gets compiled only with CONFIG_HAVE_HW_BREAKPOINT=Y.
Move DAWR detection logic outside of hw_breakpoint.c so that it can be
reused when CONFIG_HAVE_HW_BREAKPOINT is not set.
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200902042945.129369-5-ravi.bangoria@linux.ibm.com
Diffstat (limited to 'arch/powerpc/include/asm/hw_breakpoint.h')
| -rw-r--r-- | arch/powerpc/include/asm/hw_breakpoint.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/hw_breakpoint.h b/arch/powerpc/include/asm/hw_breakpoint.h index 9b68eafebf43..81872c420476 100644 --- a/arch/powerpc/include/asm/hw_breakpoint.h +++ b/arch/powerpc/include/asm/hw_breakpoint.h @@ -10,6 +10,7 @@ #define _PPC_BOOK3S_64_HW_BREAKPOINT_H #include <asm/cpu_has_feature.h> +#include <asm/inst.h> #ifdef __KERNEL__ struct arch_hw_breakpoint { @@ -52,6 +53,13 @@ static inline int nr_wp_slots(void) return cpu_has_feature(CPU_FTR_DAWR1) ? 2 : 1; } +bool wp_check_constraints(struct pt_regs *regs, struct ppc_inst instr, + unsigned long ea, int type, int size, + struct arch_hw_breakpoint *info); + +void wp_get_instr_detail(struct pt_regs *regs, struct ppc_inst *instr, + int *type, int *size, unsigned long *ea); + #ifdef CONFIG_HAVE_HW_BREAKPOINT #include <linux/kdebug.h> #include <asm/reg.h> |