prepare for release v0.15.0
added changelog for release v0.15.0
+bcc (0.15.0-1) unstable; urgency=low
+
+ * Support for kernel up to 5.7
+ * new tools: funcinterval.py, dirtop.py
+ * support lsm bpf programs
+ * support multiple pid/tids for offwaketime
+ * usdt: add helpers to set semaphore values
+ * turn off x86 jump table optimization during jit compilation
+ * add support to use bpf_probe_read[_str_}{_user,kernel} in all bpf
+ * programs, fail back to old bpf_probe_read[_str] for old kernels
+ * tools: add filtering by mount namespace
+ * libbpf-tools: cpudist, syscount, execsnoop, vfsstat
+ * lots of bug fixes and a few additional arguments for tools
+
+ -- Yonghong Song <ys114321@gmail.com> Mon, 19 Jun 2020 17:00:00 +0000
+
bcc (0.14.0-1) unstable; urgency=low
* Support for kernel up to 5.6
