From: Slavomir Kaslev <kaslevs@vmware.com>
To: rostedt@vmware.com, rostedt@goodmis.org
Cc: linux-trace-devel@vger.kernel.org, slavomir.kaslev@gmail.com
Subject: [RFC PATCH v7 03/13] trace-cmd: Detect if vsockets are available
Date: Mon, 18 Feb 2019 16:54:39 +0200 [thread overview]
Message-ID: <20190218145449.13360-4-kaslevs@vmware.com> (raw)
In-Reply-To: <20190218145449.13360-1-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:[~2019-02-18 14:55 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-18 14:54 [RFC PATCH v7 00/13] Add VM kernel tracing over vsockets and FIFOs Slavomir Kaslev
2019-02-18 14:54 ` [RFC PATCH v7 01/13] trace-cmd: Minor cleanup in tracecmd_start_recording() Slavomir Kaslev
2019-02-18 14:54 ` [RFC PATCH v7 02/13] trace-cmd: Minor cleanup in print_stat() Slavomir Kaslev
2019-02-18 14:54 ` Slavomir Kaslev [this message]
2019-02-18 14:54 ` [RFC PATCH v7 04/13] trace-cmd: Add tracecmd_create_recorder_virt function Slavomir Kaslev
2019-02-18 14:54 ` [RFC PATCH v7 05/13] trace-cmd: Add TRACE_REQ and TRACE_RESP messages Slavomir Kaslev
2019-02-18 14:54 ` [RFC PATCH v7 06/13] trace-cmd: Add buffer instance flags for tracing in guest and agent context Slavomir Kaslev
2019-02-18 14:54 ` [RFC PATCH v7 07/13] trace-cmd: Add VM kernel tracing over vsockets transport Slavomir Kaslev
2019-02-18 14:54 ` [RFC PATCH v7 08/13] trace-cmd: Use splice(2) for vsockets if available Slavomir Kaslev
2019-02-18 14:54 ` [RFC PATCH v7 09/13] trace-cmd: Add `trace-cmd setup-guest` command Slavomir Kaslev
2019-02-18 14:54 ` [RFC PATCH v7 10/13] trace-cmd: Try to autodetect number of guest CPUs in setup-guest if not specified Slavomir Kaslev
2019-02-18 14:54 ` [RFC PATCH v7 11/13] trace-cmd: Add setup-guest flag for attaching FIFOs to the guest VM config Slavomir Kaslev
2019-02-18 14:54 ` [RFC PATCH v7 12/13] trace-cmd: Add splice() recording from FIFO without additional pipe buffer Slavomir Kaslev
2019-02-18 14:54 ` [RFC PATCH v7 13/13] trace-cmd: Add VM tracing over FIFOs transport Slavomir Kaslev
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190218145449.13360-4-kaslevs@vmware.com \
--to=kaslevs@vmware.com \
--cc=linux-trace-devel@vger.kernel.org \
--cc=rostedt@goodmis.org \
--cc=rostedt@vmware.com \
--cc=slavomir.kaslev@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).