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| author | Pratyush Anand <panand@redhat.com> | 2016-11-14 19:32:45 +0530 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2016-11-18 17:26:14 +0000 |
| commit | 0ddb8e0b784ba034f3096d5a54684d0d73155e2a (patch) | |
| tree | 0f8a2676023d6ff2fe21c4944f8bab5f66ea93c8 /arch/arm64/kernel/hw_breakpoint.c | |
| parent | fdfeff0f9e3d9be2b68fa02566017ffc581ae17b (diff) | |
| download | lwn-0ddb8e0b784ba034f3096d5a54684d0d73155e2a.tar.gz lwn-0ddb8e0b784ba034f3096d5a54684d0d73155e2a.zip | |
arm64: Allow hw watchpoint of length 3,5,6 and 7
Since, arm64 can support all offset within a double word limit. Therefore,
now support other lengths within that range as well.
Signed-off-by: Pratyush Anand <panand@redhat.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kernel/hw_breakpoint.c')
| -rw-r--r-- | arch/arm64/kernel/hw_breakpoint.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/arm64/kernel/hw_breakpoint.c b/arch/arm64/kernel/hw_breakpoint.c index 13035d06b498..1b3c747fedda 100644 --- a/arch/arm64/kernel/hw_breakpoint.c +++ b/arch/arm64/kernel/hw_breakpoint.c @@ -317,9 +317,21 @@ static int get_hbp_len(u8 hbp_len) case ARM_BREAKPOINT_LEN_2: len_in_bytes = 2; break; + case ARM_BREAKPOINT_LEN_3: + len_in_bytes = 3; + break; case ARM_BREAKPOINT_LEN_4: len_in_bytes = 4; break; + case ARM_BREAKPOINT_LEN_5: + len_in_bytes = 5; + break; + case ARM_BREAKPOINT_LEN_6: + len_in_bytes = 6; + break; + case ARM_BREAKPOINT_LEN_7: + len_in_bytes = 7; + break; case ARM_BREAKPOINT_LEN_8: len_in_bytes = 8; break; @@ -381,9 +393,21 @@ int arch_bp_generic_fields(struct arch_hw_breakpoint_ctrl ctrl, case ARM_BREAKPOINT_LEN_2: *gen_len = HW_BREAKPOINT_LEN_2; break; + case ARM_BREAKPOINT_LEN_3: + *gen_len = HW_BREAKPOINT_LEN_3; + break; case ARM_BREAKPOINT_LEN_4: *gen_len = HW_BREAKPOINT_LEN_4; break; + case ARM_BREAKPOINT_LEN_5: + *gen_len = HW_BREAKPOINT_LEN_5; + break; + case ARM_BREAKPOINT_LEN_6: + *gen_len = HW_BREAKPOINT_LEN_6; + break; + case ARM_BREAKPOINT_LEN_7: + *gen_len = HW_BREAKPOINT_LEN_7; + break; case ARM_BREAKPOINT_LEN_8: *gen_len = HW_BREAKPOINT_LEN_8; break; @@ -427,9 +451,21 @@ static int arch_build_bp_info(struct perf_event *bp) case HW_BREAKPOINT_LEN_2: info->ctrl.len = ARM_BREAKPOINT_LEN_2; break; + case HW_BREAKPOINT_LEN_3: + info->ctrl.len = ARM_BREAKPOINT_LEN_3; + break; case HW_BREAKPOINT_LEN_4: info->ctrl.len = ARM_BREAKPOINT_LEN_4; break; + case HW_BREAKPOINT_LEN_5: + info->ctrl.len = ARM_BREAKPOINT_LEN_5; + break; + case HW_BREAKPOINT_LEN_6: + info->ctrl.len = ARM_BREAKPOINT_LEN_6; + break; + case HW_BREAKPOINT_LEN_7: + info->ctrl.len = ARM_BREAKPOINT_LEN_7; + break; case HW_BREAKPOINT_LEN_8: info->ctrl.len = ARM_BREAKPOINT_LEN_8; break; |