From: Slavomir Kaslev <kaslevs@vmware.com>
To: rostedt@goodmis.org
Cc: linux-trace-devel@vger.kernel.org, slavomir.kaslev@gmail.com
Subject: [RFC PATCH v9 02/11] trace-cmd: Detect if vsockets are available
Date: Tue, 2 Apr 2019 16:45:31 +0300 [thread overview]
Message-ID: <20190402134540.32321-3-kaslevs@vmware.com> (raw)
In-Reply-To: <20190402134540.32321-1-kaslevs@vmware.com>
From: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
Detect and define VSOCK if vsockets are available on the system.
This macro is used to disable VM remote tracing features on older kernels.
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Slavomir Kaslev <kaslevs@vmware.com>
---
Makefile | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/Makefile b/Makefile
index b780718..99e4f39 100644
--- a/Makefile
+++ b/Makefile
@@ -204,6 +204,13 @@ CFLAGS ?= -g -Wall
CPPFLAGS ?=
LDFLAGS ?=
+VSOCK_DEFINED := $(shell if (echo "\#include <linux/vm_sockets.h>" | $(CC) -E - >/dev/null 2>&1) ; then echo 1; else echo 0 ; fi)
+
+export VSOCK_DEFINED
+ifeq ($(VSOCK_DEFINED), 1)
+CFLAGS += -DVSOCK
+endif
+
export CFLAGS
export INCLUDES
--
2.19.1
next prev parent reply other threads:[~2019-04-02 13:45 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-02 13:45 [RFC PATCH v9 00/11] Add VM kernel tracing over vsockets and FIFOs Slavomir Kaslev
2019-04-02 13:45 ` [RFC PATCH v9 01/11] trace-cmd: Make ports unsigned int Slavomir Kaslev
2019-04-03 13:00 ` Steven Rostedt
2019-04-03 13:14 ` Slavomir Kaslev
2019-04-02 13:45 ` Slavomir Kaslev [this message]
2019-04-02 13:45 ` [RFC PATCH v9 03/11] trace-cmd: Add tracecmd_create_recorder_virt function Slavomir Kaslev
2019-04-03 13:02 ` Steven Rostedt
2019-04-03 13:12 ` Slavomir Kaslev
2019-04-02 13:45 ` [RFC PATCH v9 04/11] trace-cmd: Add TRACE_REQ and TRACE_RESP messages Slavomir Kaslev
2019-04-02 13:45 ` [RFC PATCH v9 05/11] trace-cmd: Add buffer instance flags for tracing in guest and agent context Slavomir Kaslev
2019-04-02 13:45 ` [RFC PATCH v9 06/11] trace-cmd: Add VM kernel tracing over vsockets transport Slavomir Kaslev
2019-04-02 13:45 ` [RFC PATCH v9 07/11] trace-cmd: Use splice(2) for vsockets if available Slavomir Kaslev
2019-04-02 13:45 ` [RFC PATCH v9 08/11] trace-cmd: Add `trace-cmd setup-guest` command Slavomir Kaslev
2019-04-02 13:45 ` [RFC PATCH v9 09/11] trace-cmd: Try to autodetect number of guest CPUs in setup-guest if not specified Slavomir Kaslev
2019-04-02 13:45 ` [RFC PATCH v9 10/11] trace-cmd: Add setup-guest flag for attaching FIFOs to the guest VM config Slavomir Kaslev
2019-04-02 13:45 ` [RFC PATCH v9 11/11] trace-cmd: Add splice() recording from FIFO without additional pipe buffer Slavomir Kaslev
2019-04-03 12:55 ` Steven Rostedt
2019-04-03 13:11 ` Slavomir Kaslev
2019-04-03 13:16 ` Slavomir Kaslev
2019-04-03 13:25 ` Steven Rostedt
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