From c9e82aeb197df2d93b1b4234bc0c80943fa594e8 Mon Sep 17 00:00:00 2001 From: Ravi Bangoria Date: Thu, 14 May 2020 16:47:36 +0530 Subject: [PATCH] powerpc/watchpoint: Introduce is_ptrace_bp() function Introduce is_ptrace_bp() function and move the check inside the function. It will be utilize more in later set of patches. Signed-off-by: Ravi Bangoria Signed-off-by: Michael Ellerman Reviewed-by: Michael Neuling Link: https://lore.kernel.org/r/20200514111741.97993-12-ravi.bangoria@linux.ibm.com --- arch/powerpc/kernel/hw_breakpoint.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/hw_breakpoint.c b/arch/powerpc/kernel/hw_breakpoint.c index 917cca73dbc3..8028a2704874 100644 --- a/arch/powerpc/kernel/hw_breakpoint.c +++ b/arch/powerpc/kernel/hw_breakpoint.c @@ -91,6 +91,11 @@ void arch_uninstall_hw_breakpoint(struct perf_event *bp) hw_breakpoint_disable(); } +static bool is_ptrace_bp(struct perf_event *bp) +{ + return bp->overflow_handler == ptrace_triggered; +} + /* * Perform cleanup of arch-specific counters during unregistration * of the perf-event @@ -325,7 +330,7 @@ int hw_breakpoint_handler(struct die_args *args) * one-shot mode. The ptrace-ed process will receive the SIGTRAP signal * generated in do_dabr(). */ - if (bp->overflow_handler == ptrace_triggered) { + if (is_ptrace_bp(bp)) { perf_bp_event(bp, regs); rc = NOTIFY_DONE; goto out;