X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=lttng-abi.h;h=9b9a2323b66f20f26eb498027f0e507728e5cc2b;hb=f23d31653d15ee5b23a675d81499812b1f4a01cb;hp=e23393ff9e0a28b183f1c143dbfc2f9a1b7256c6;hpb=6cdc77f6f9d680b780e2eea0d1b09b289da675e2;p=lttng-modules.git

diff --git a/lttng-abi.h b/lttng-abi.h
index e23393ff..9b9a2323 100644
--- a/lttng-abi.h
+++ b/lttng-abi.h
@@ -197,6 +197,11 @@ struct lttng_kernel_filter_bytecode {
 	_IOR(0xF6, 0x58, int32_t)
 #define LTTNG_KERNEL_SESSION_UNTRACK_PID	\
 	_IOR(0xF6, 0x59, int32_t)
+/*
+ * ioctl 0x58 and 0x59 are duplicated here. It works, since _IOR vs _IO
+ * are generating two different ioctl numbers, but this was not done on
+ * purpose. We should generally try to avoid those duplications.
+ */
 #define LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS	_IO(0xF6, 0x58)
 #define LTTNG_KERNEL_SESSION_METADATA_REGEN	_IO(0xF6, 0x59)