Kernel-ctl: Expose kernel clear buffer operation

Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>

diff --git a/src/common/kernel-ctl/kernel-ctl.c b/src/common/kernel-ctl/kernel-ctl.c
index 047d40a34d80ea611ff940a78efdb26ebf9127bd..9c5ed7fd982321db33fb7252d8286622c1ce2769 100644 (file)
--- a/src/common/kernel-ctl/kernel-ctl.c
+++ b/src/common/kernel-ctl/kernel-ctl.c
@@ -418,6 +418,11 @@ int kernctl_buffer_flush_empty(int fd)
        return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_FLUSH_EMPTY);
 }
 
        return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_FLUSH_EMPTY);
 }
 

+int kernctl_buffer_clear(int fd)
+{
+       return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_CLEAR);
+}
+

 /* returns the version of the metadata. */
 int kernctl_get_metadata_version(int fd, uint64_t *version)
 {
 /* returns the version of the metadata. */
 int kernctl_get_metadata_version(int fd, uint64_t *version)
 {

diff --git a/src/common/kernel-ctl/kernel-ctl.h b/src/common/kernel-ctl/kernel-ctl.h
index 841c31da0d4c17d0fe353e32b0b73c73e0e3d65b..45fd6d29b6816905fae5f4703430c63cf279b99a 100644 (file)
--- a/src/common/kernel-ctl/kernel-ctl.h
+++ b/src/common/kernel-ctl/kernel-ctl.h
@@ -95,6 +95,7 @@ int kernctl_put_subbuf(int fd);
 
 int kernctl_buffer_flush(int fd);
 int kernctl_buffer_flush_empty(int fd);
 
 int kernctl_buffer_flush(int fd);
 int kernctl_buffer_flush_empty(int fd);

+int kernctl_buffer_clear(int fd);

 int kernctl_get_metadata_version(int fd, uint64_t *version);
 int kernctl_metadata_cache_dump(int fd);
 
 int kernctl_get_metadata_version(int fd, uint64_t *version);
 int kernctl_metadata_cache_dump(int fd);
 

diff --git a/src/common/kernel-ctl/kernel-ioctl.h b/src/common/kernel-ctl/kernel-ioctl.h
index e7ff50b24349e0f152856a30177f36b6cbebb8f3..139cb635fa47b2aeb7ff9df7c3d7119a3ea83a7a 100644 (file)
--- a/src/common/kernel-ctl/kernel-ioctl.h
+++ b/src/common/kernel-ctl/kernel-ioctl.h
@@ -64,6 +64,8 @@
  * so it can be read again.
  */
 #define RING_BUFFER_METADATA_CACHE_DUMP        _IO(0xF6, 0x10)
  * so it can be read again.
  */
 #define RING_BUFFER_METADATA_CACHE_DUMP        _IO(0xF6, 0x10)

+/* Clear ring buffer content */
+#define RING_BUFFER_CLEAR                    _IO(0xF6, 0x11)

 
 /* returns the timestamp begin of the current sub-buffer */
 #define LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN     _IOR(0xF6, 0x20, uint64_t)
 
 /* returns the timestamp begin of the current sub-buffer */
 #define LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN     _IOR(0xF6, 0x20, uint64_t)