From 3f43b8fbe6cf55fb25e49134f3d0d9cf9e242c9c Mon Sep 17 00:00:00 2001
From: compudj <compudj@04897980-b3bd-0310-b5e0-8ef037075253>
Date: Wed, 25 Jan 2006 20:51:28 +0000
Subject: [PATCH] roadmap update

git-svn-id: http://ltt.polymtl.ca/svn@1490 04897980-b3bd-0310-b5e0-8ef037075253
---
 .../doc/developer/lttng-lttv-roadmap.html     |  1 +
 .../doc/developer/lttng-userspace-tracing.txt | 22 ++++++++++++++-----
 2 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/ltt/branches/poly/doc/developer/lttng-lttv-roadmap.html b/ltt/branches/poly/doc/developer/lttng-lttv-roadmap.html
index 088ea626..3c4a5203 100644
--- a/ltt/branches/poly/doc/developer/lttng-lttv-roadmap.html
+++ b/ltt/branches/poly/doc/developer/lttng-lttv-roadmap.html
@@ -47,6 +47,7 @@ The % symbol marks who is interested in the realisation of the item.<br>
 never hit the facility channel. Use the complete 64 bits TSC for the facility
 channel in every case. That's because this channel must never be overwritten
 even in "flight recorder" mode.<br>
+(5) Support CPUs with scalable frequency.<br>
 (5) Integrate LTTng and lttd with LKCD.<br>
 (6) Add Xen support.<br>
 (7) add gcc -finstrument-functions instrumentation<br>
diff --git a/ltt/branches/poly/doc/developer/lttng-userspace-tracing.txt b/ltt/branches/poly/doc/developer/lttng-userspace-tracing.txt
index 4bf221c3..beb56cac 100644
--- a/ltt/branches/poly/doc/developer/lttng-userspace-tracing.txt
+++ b/ltt/branches/poly/doc/developer/lttng-userspace-tracing.txt
@@ -49,7 +49,7 @@ status.
 My suggestion is to go for a system call, but only call it :
 
 - when the thread starts
-- when receiving a SIG_UPDTRACING (multithread ?)
+- when receiving a SIGRTMIN+3 (multithread ?)
 
 Note : save the thread ID (process ID) in the logging function and the update
 handler. Use it as a comparison to check if we are a forked child thread.
@@ -192,18 +192,30 @@ API :
 
 syscall 1 :
 
-int update_tracing_info(void *buffer, int *active, int *filter);
+in :
+buffer : NULL means get new traces
+				 non NULL means to get the information for the specified buffer
+out :
+buffer : returns the address of the trace buffer
+active : is the trace active ?
+filter : 32 bits filter mask
 
+return : 0 on success, 1 on error.
+
+int ltt_update(void **buffer, int *active, int *filter);
 
 syscall 2 :
 
-int tracing_buffer_switch(void *buffer);
+in :
+buffer : Switch the specified buffer.
+return : 0 on success, 1 on error.
+
+int ltt_switch(void *buffer);
 
 
 Signal :
 
-UPD_TRACING
-Default : SIG IGNORE
+SIGRTMIN+3
 (like hardware fault and expiring timer : to the thread, see p. 413 of Advances
 prog. in the UNIX env.)
 
-- 
2.34.1