Mathieu Desnoyers wrote:

+#define MARK(name, format, args...) \
+       do { \
+               static marker_probe_func *__mark_call_##name = \
+                                       __mark_empty_function; \
+               volatile static char __marker_enable_##name = 0; \
+               static const struct __mark_marker_c __mark_c_##name \
+                       __attribute__((section(".markers.c"))) = \
+                       { #name, &__mark_call_##name, format } ; \
+               static const struct __mark_marker __mark_##name \
+                       __attribute__((section(".markers"))) = \
+                       { &__mark_c_##name, &__marker_enable_##name } ; \
+               asm volatile ( "" : : "i" (&__mark_##name)); \
+               __mark_check_format(format, ## args); \
+               if (unlikely(__marker_enable_##name)) { \
+                       preempt_disable(); \
+                       (*__mark_call_##name)(format, ## args); \
+                       preempt_enable_no_resched(); \

Why not just preempt_enable() here?

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