X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=drivers%2Foprofile%2Fcpu_buffer.h;h=272995d20293ab10aa4d77fb44d7f4bd79d76afb;hb=ceb5eb0cb3fe61d488aa76aba748409775a56daa;hp=63f81c44846ae28b5bf2020d8fe445e4e4377d7b;hpb=d19b85db9d5c44a4c21dcb10d6fbadaa4425ab2a;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/oprofile/cpu_buffer.h b/drivers/oprofile/cpu_buffer.h
index 63f81c44846..272995d2029 100644
--- a/drivers/oprofile/cpu_buffer.h
+++ b/drivers/oprofile/cpu_buffer.h
@@ -66,6 +66,13 @@ static inline void op_cpu_buffer_reset(int cpu)
 	cpu_buf->last_task = NULL;
 }
 
+/*
+ * op_cpu_buffer_add_data() and op_cpu_buffer_write_commit() may be
+ * called only if op_cpu_buffer_write_reserve() did not return NULL or
+ * entry->event != NULL, otherwise entry->size or entry->event will be
+ * used uninitialized.
+ */
+
 struct op_sample
 *op_cpu_buffer_write_reserve(struct op_entry *entry, unsigned long size);
 int op_cpu_buffer_write_commit(struct op_entry *entry);