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From: "Slavomir Kaslev (VMware)" <slavomir.kaslev@gmail.com>
To: rostedt@goodmis.org
Cc: linux-trace-devel@vger.kernel.org
Subject: [PATCH v12 02/13] trace-cmd: Detect if vsockets are available
Date: Tue, 18 Jun 2019 17:44:44 +0300	[thread overview]
Message-ID: <20190618144455.3954-3-slavomir.kaslev@gmail.com> (raw)
In-Reply-To: <20190618144455.3954-1-slavomir.kaslev@gmail.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 d34c615..ba726ee 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
 
-- 
2.20.1


  parent reply	other threads:[~2019-06-18 14:45 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-18 14:44 [PATCH v12 00/13] Add VM kernel tracing over vsockets and FIFOs Slavomir Kaslev (VMware)
2019-06-18 14:44 ` [PATCH v12 01/13] trace-cmd: Make ports unsigned int Slavomir Kaslev (VMware)
2019-06-18 14:44 ` Slavomir Kaslev (VMware) [this message]
2019-06-18 14:44 ` [PATCH v12 03/13] trace-cmd: Add tracecmd_create_recorder_virt() function Slavomir Kaslev (VMware)
2019-06-18 14:44 ` [PATCH v12 04/13] trace-cmd: Add VM tracing protocol messages Slavomir Kaslev (VMware)
2019-06-18 14:44 ` [PATCH v12 05/13] trace-cmd: Add buffer instance flags for tracing in guest and agent context Slavomir Kaslev (VMware)
2019-06-18 14:44 ` [PATCH v12 06/13] trace-cmd: Add VM kernel tracing over vsockets transport Slavomir Kaslev (VMware)
2019-06-18 14:44 ` [PATCH v12 07/13] trace-cmd: Use splice(2) for vsockets if available Slavomir Kaslev (VMware)
2019-06-18 14:44 ` [PATCH v12 08/13] trace-cmd: Switch stop recording signal to SIGUSR1 Slavomir Kaslev (VMware)
2019-06-18 14:44 ` [PATCH v12 09/13] trace-cmd: Add `trace-cmd setup-guest` command Slavomir Kaslev (VMware)
2019-06-18 14:44 ` [PATCH v12 10/13] trace-cmd: Try to autodetect number of guest CPUs in setup-guest if not specified Slavomir Kaslev (VMware)
2019-06-18 14:44 ` [PATCH v12 11/13] trace-cmd: Add setup-guest flag for attaching FIFOs to the guest VM config Slavomir Kaslev (VMware)
2019-06-18 14:44 ` [PATCH v12 12/13] trace-cmd: Add splice() recording from FIFO without additional pipe buffer Slavomir Kaslev (VMware)
2019-06-18 14:44 ` [PATCH v12 13/13] trace-cmd: Add support for tracing VMware Workstation VMs by name Slavomir Kaslev (VMware)

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