diff options
| author | Nam Cao <namcao@linutronix.de> | 2025-07-09 21:21:19 +0200 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2025-07-09 15:27:01 -0400 |
| commit | a37c71ca412d90365e143581582c4ecd3a90508f (patch) | |
| tree | 72a9dd241d9ec121f15ac9e2a43874bd8b1161a4 | |
| parent | 886fc86e9419a2bf61713ba566eb6edd8e6aa989 (diff) | |
riscv: mm: Add page fault trace points
Add page fault trace points, which are useful to implement RV monitor that
watches page faults.
Signed-off-by: Nam Cao <namcao@linutronix.de>
Acked-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
| -rw-r--r-- | arch/riscv/mm/fault.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/riscv/mm/fault.c b/arch/riscv/mm/fault.c index 0194324a0c50..04ed6f8acae4 100644 --- a/arch/riscv/mm/fault.c +++ b/arch/riscv/mm/fault.c @@ -20,6 +20,9 @@ #include <asm/ptrace.h> #include <asm/tlbflush.h> +#define CREATE_TRACE_POINTS +#include <trace/events/exceptions.h> + #include "../kernel/head.h" static void show_pte(unsigned long addr) @@ -291,6 +294,11 @@ void handle_page_fault(struct pt_regs *regs) if (kprobe_page_fault(regs, cause)) return; + if (user_mode(regs)) + trace_page_fault_user(addr, regs, cause); + else + trace_page_fault_kernel(addr, regs, cause); + /* * Fault-in kernel-space virtual memory on-demand. * The 'reference' page table is init_mm.pgd. |