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 6a256fefd00fa06b107c61aff78ea09151e63627..6186e6f4f0d6c9333ccf868d9d6f452e0dc376eb 100644 (file)
--- a/src/common/kernel-ctl/kernel-ctl.c
+++ b/src/common/kernel-ctl/kernel-ctl.c
@@ -413,6 +413,11 @@ int kernctl_buffer_flush_empty(int fd)
        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)
 {

diff --git a/src/common/kernel-ctl/kernel-ctl.h b/src/common/kernel-ctl/kernel-ctl.h
index d88f5e7659f336dcf8794b5684f624ad1dfb9212..1a448c8e10b4207385455e89fc3e9c5d84647b96 100644 (file)
--- a/src/common/kernel-ctl/kernel-ctl.h
+++ b/src/common/kernel-ctl/kernel-ctl.h
@@ -94,6 +94,7 @@ int kernctl_put_subbuf(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);
 
 /* index */

diff --git a/src/common/kernel-ctl/kernel-ioctl.h b/src/common/kernel-ctl/kernel-ioctl.h
index 3c4f4129e63c8c0129521ca9ad617599927a3ce3..3f3e2ad8787175906c5fe7b4d2c4ca0b8dfc3bd9 100644 (file)
--- a/src/common/kernel-ctl/kernel-ioctl.h
+++ b/src/common/kernel-ctl/kernel-ioctl.h
@@ -59,6 +59,8 @@
 #define RING_BUFFER_SNAPSHOT_SAMPLE_POSITIONS  _IO(0xF6, 0x0E)
 /* Flush the current sub-buffer, even if empty. */
 #define RING_BUFFER_FLUSH_EMPTY                        _IO(0xF6, 0x0F)
+/* 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)