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-Here the status of the work in progress for LTT experimental<br>
+<big>LTTV Roadmap<small><br>
+<br>
+* TODO<br>
+migrate align to lttv parser.<br>
+create a event rate graphical view : Will be useful in conjonction with the
+ filter.<br>
+create an analysis of function time (like a precise gprof)<br>
+ -> with gcc -f inline-functions<br>
+<br>
+<br>
+* Done<br>
+Buffer aligned on page boundary -> use valloc.<br>
+per struct (struct align=x) support added to genevent (partial).<br>
+Add offset align generation for structs to genevent.<br>
+make lttv aware of the per facility long, void* and size_t types.<br>
+Read current trace header and buffer header.<br>
+<br>
+<big>LTT Next Generation Roadmap<small><br>
+<br>
+* TODO<br>
+make LTT tracing code completely atomic (thus remove locks)<br>
+add efficient and secure user space tracing. (1 month)<br>
+integrate LTTng State Dump : missing irq and process state.<br>
+add genevent full functionnality : alignment, array, sequences, nested
+structures.<br>
+add gcc -finstrument-functions instrumentation<br>
+<br>
<br>
* Done<br>
remove ltt-headers.h<br>
remove ltt-log.h<br>
Put trace->active later in _ltt_trace_start()<br>
ltt_trace_create() remove sleep in spinlock use GFP_ATOMIC kmalloc<br>
-<br>
-<br>
-* TODO<br>
Fix the locking of module hooks.<br>
-Per cpu read lock on trace structure OR use list rcu.<br>
-Remove the callback struct from the trace struct.<br>
+Fix the traps -> disable nested logging for now.<br>
+Use per cpu spinlock on trace list.<br>
+Finish the control module, libltt and lttctl : netlink interface<br>
+Finish integrating lttctl with lttd.<br>
+fix lttctl signal waiting : use a flag.<br>
+Add ltt_write_commit_counter call to genevent.<br>
+Add information in the buffer header : buffer size, etc etc...<br>
+ -> this information is so small that we can repeat it. Makes flight recorder
+ easier to decode.<br>
+Add trace start structure to buffer start header.<br>
+fix genevent : take no lock if num traces active is 0.<br>
+Add type information per facility : it will help having a standard way
+to understand information coming from both kernel space and user space, and deal
+easily with 64 bits kernel with 64 and 32 bits processes (and with size_t know
+at compile time which can differ inside the same process from one library to
+another).<br>
+fix structures alignment, array and sequences too. -> trace dynamic.<br>
+add per facility alignment (inside structures).<br>
+add control of alignment.<br>
+add control for subbuffer size and number of subbuffers.<br>
+Add reserve - get TSC - alignment atomicity through the use of cmpxchg.<br>
+Add configurable alignment (LTT_ALIGNMENT).<br>
<br>
<br>
<br>
* TODO (low priority)<br>
Integrate header generation (genevent) in kernel build system.<br>
Multithreaded lttd.<br>
+Find a different way to printk from instrumentation : forbidden from schedule
+and wakeup (causes a deadlock).<br>
<br>
* Need to be discussed<br>
Drop ltt-module-register and ltt-module-unregister, use exported variables.<br>
Remove ltt-base.c.<br>
<br>
* Not planned for integration<br>
+Remove the callback struct from the trace struct.<br>
<br>
<br>
<br>
-* Next experimental release patch division :<br>
+* lttng patch division (0.4.2+) :<br>
<br>
ltt-instrumentation.diff<br>
- - ltt-configmenu.diff (put in ltt-core.diff)<br>
ltt-facilities-headers.diff<br>
ltt-facilities-loader.diff<br>
ltt-facilities.diff<br>
-ltt-instrumentation.diff<br>
ltt-relayfs.diff<br>
-ltt-time.diff<br>
ltt-core.diff<br>
<br>
<br>
projects / lttv.git / blobdiff