On Tue, Mar 17, 2026 at 9:20 AM Jinjie Ruan <[email protected]> wrote:
> Refactor syscall_trace_enter() and syscall_trace_exit() to move thread > flag reading to the caller. This aligns arm64's syscall trace enter/exit > function signature with generic entry framework. > > [Changes] > 1. Function signature changes: > - syscall_trace_enter(regs) → syscall_trace_enter(regs, flags) > - syscall_trace_exit(regs) → syscall_trace_exit(regs, flags) > > 2. Move flags reading to caller: > - Previously: read_thread_flags() called inside each function. > - Now: caller (like el0_svc_common) passes flags as parameter. > > 3. Update syscall.c: > - el0_svc_common() now passes flags to tracing functions and > re-fetches flags before exit to handle potential TIF updates. > > [Why this matters] > - Aligns arm64 with the generic entry interface. > - Makes future migration to generic entry framework. > > No functional changes intended. > > Cc: Will Deacon <[email protected]> > Cc: Catalin Marinas <[email protected]> > Reviewed-by: Kevin Brodsky <[email protected]> > Signed-off-by: Jinjie Ruan <[email protected]> Reviewed-by: Linus Walleij <[email protected]> Yours, Linus Walleij
