This patchset adds support for tracing guest kernels to trace-cmd.
Changes in v4:
- detect and use splice(2) on vsock sockets if possible
- switch port numbers to unsigned int
- trace-cmd record --date flag is now set for all guests if provided by the user
- removed grow_cap and exponential buffer size growth
Changes in v3:
- addressed Steven's feedback
- detect and disable guest tracing if <linux/vm_sockets.h> is not available
- the --date flag is now treated as global for all guest instances
- fixed a bug that caused --date to be ignored for host tracing data when tracing guests
Changes in v2:
- rebased on top of protocol V3
- fixed system clock timestamps with the --date flag
Slavomir Kaslev (6):
trace-cmd: Minor refactoring
trace-cmd: Add tracecmd_create_recorder_virt function
trace-cmd: Add TRACE_REQ and TRACE_RESP messages
trace-cmd: Add buffer instance flags for tracing in guest and agent
context
trace-cmd: Add VM kernel tracing over vsock sockets transport
trace-cmd: Use splice(2) for vsock sockets if available
Steven Rostedt (VMware) (1):
trace-cmd: Detect if vsock sockets are available
Tzvetomir Stoyanov (1):
trace-cmd: Use unsigned int for trace-cmd client ports
Makefile | 7 +
include/trace-cmd/trace-cmd.h | 17 +-
lib/trace-cmd/trace-recorder.c | 53 ++-
tracecmd/Makefile | 6 +-
tracecmd/include/trace-local.h | 18 +
tracecmd/trace-agent.c | 230 ++++++++++
tracecmd/trace-cmd.c | 3 +
tracecmd/trace-msg.c | 210 ++++++++-
tracecmd/trace-record.c | 803 +++++++++++++++++++++++++++++----
tracecmd/trace-usage.c | 13 +-
10 files changed, 1243 insertions(+), 117 deletions(-)
create mode 100644 tracecmd/trace-agent.c
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2.19.1
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