diff options
| author | Qing Zhang <zhangqing@loongson.cn> | 2023-02-25 15:52:57 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2023-02-25 22:12:17 +0800 |
| commit | edffa33c7bb5a73e90c754c7a497162b77d7c55f (patch) | |
| tree | 64292d0bc9301134eaeafd6a02977cc9e8913fd6 /arch/loongarch/Kconfig | |
| parent | 35c94fab6eee72d60d9cd8d1e6e43e1f77b1dce2 (diff) | |
LoongArch: Add hardware breakpoints/watchpoints support
Use perf framework to manage hardware instruction and data breakpoints.
LoongArch defines hardware watchpoint functions for instruction fetch
and memory load/store operations. After the software configures hardware
watchpoints, the processor hardware will monitor the access address of
the instruction fetch and load/store operation, and trigger an exception
of the watchpoint when it meets the conditions set by the watchpoint.
The hardware monitoring points for instruction fetching and load/store
operations each have a register for the overall configuration of all
monitoring points, a register for recording the status of all monitoring
points, and four registers required for configuration of each watchpoint
individually.
Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/Kconfig')
| -rw-r--r-- | arch/loongarch/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index c6a02d26b3e5..97423f86384b 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -101,6 +101,7 @@ config LOONGARCH select HAVE_FUNCTION_GRAPH_TRACER select HAVE_FUNCTION_TRACER select HAVE_GENERIC_VDSO + select HAVE_HW_BREAKPOINT if PERF_EVENTS select HAVE_IOREMAP_PROT select HAVE_IRQ_EXIT_ON_IRQ_STACK select HAVE_IRQ_TIME_ACCOUNTING |