diff mbox series

[v2,11/16] powerpc/watchpoint: Introduce is_ptrace_bp() function

Message ID 20200401061309.92442-12-ravi.bangoria@linux.ibm.com (mailing list archive)
State Superseded
Headers show
Series powerpc/watchpoint: Preparation for more than one watchpoint | expand

Checks

Context Check Description
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/merge (c6624071c338732402e8c726df6a4074473eaa0e)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/next (7074695ac6fb965d478f373b95bc5c636e9f21b0)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch linus/master (1a323ea5356edbb3073dc59d51b9e6b86908857d)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/fixes (1d0c32ec3b860a32df593a22bad0d1dbc5546a59)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch linux-next (3eb7cccdb3ae41ebb6a2f5f1ccd2821550c61fe1)
snowpatch_ozlabs/apply_patch fail Failed to apply to any branch

Commit Message

Ravi Bangoria April 1, 2020, 6:13 a.m. UTC 
Introduce is_ptrace_bp() function and move the check inside the
function. We will utilize it more in later set of patches.

Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
---
 arch/powerpc/kernel/hw_breakpoint.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/powerpc/kernel/hw_breakpoint.c b/arch/powerpc/kernel/hw_breakpoint.c
index 6daa95b8bb88..8d3f7d87d790 100644
--- a/arch/powerpc/kernel/hw_breakpoint.c
+++ b/arch/powerpc/kernel/hw_breakpoint.c
@@ -90,6 +90,11 @@  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
@@ -324,7 +329,7 @@  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;