updateltt-experimental-rewrite.html
[lttv.git] / ltt / branches / poly / doc / developer / ltt-experimental-rewrite.html
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1f2c88b1 1<html>
2<body>
0c4b3d55 3Progress in LTTV :<br>
4* Done<br>
3490c00c 5Buffer aligned on page boundary -> use valloc.<br>
b553b3fc 6per struct (struct align=x\) support added to genevent (partial).<br>
b8b5f119 7Add offset align generation for structs to genevent.<br>
0c4b3d55 8<br>
9*TODO<br>
10Read current trace header and buffer header.<br>
11migrate align to lttv parser.<br>
0c4b3d55 12<br>
13<br>
15e89ad6 14Here the status of the work in progress for LTT experimental<br>
15<br>
b720b182 16* Done<br>
b720b182 17remove ltt-headers.h<br>
18remove ltt-log.h<br>
c9eaf4ed 19Put trace->active later in _ltt_trace_start()<br>
20ltt_trace_create() remove sleep in spinlock use GFP_ATOMIC kmalloc<br>
1502fa62 21Fix the locking of module hooks.<br>
22Fix the traps -> disable nested logging for now.<br>
23Use per cpu spinlock on trace list.<br>
24c78300 24Finish the control module, libltt and lttctl : netlink interface<br>
baffa645 25Finish integrating lttctl with lttd.<br>
ada84671 26fix lttctl signal waiting : use a flag.<br>
4e4d11b3 27Add ltt_write_commit_counter call to genevent.<br>
24c78300 28Add information in the buffer header : buffer size, etc etc...<br>
29 -> this information is so small that we can repeat it. Makes flight recorder
30 easier to decode.<br>
4e4d11b3 31Add trace start structure to buffer start header.<br>
ada84671 32fix genevent : take no lock if num traces active is 0.<br>
4e4d11b3 33Add type information per facility : it will help having a standard way
34to understand information coming from both kernel space and user space, and deal
35easily with 64 bits kernel with 64 and 32 bits processes (and with size_t know
36at compile time which can differ inside the same process from one library to
37another).<br>
38fix structures alignment, array and sequences too. -> trace dynamic.<br>
39add per facility alignment (inside structures).<br>
40add control of alignment.<br>
0c4b3d55 41add control for subbuffer size and number of subbuffers.<br>
42<br>
43<br>
44* TODO<br>
4e4d11b3 45add user space tracing.<br>
46<br>
47<br>
b720b182 48<br>
49* TODO (low priority)<br>
b720b182 50Integrate header generation (genevent) in kernel build system.<br>
c9eaf4ed 51Multithreaded lttd.<br>
baffa645 52Find a different way to printk from instrumentation : forbidden from schedule
53and wakeup (causes a deadlock).<br>
b720b182 54<br>
15e89ad6 55* Need to be discussed<br>
b720b182 56Drop ltt-module-register and ltt-module-unregister, use exported variables.<br>
57RelayFS ioctl interface vs control through LTT netlink interface.<br>
58drop ltt_filter_control, use functions pointers instead.<br>
b720b182 59Merge facilities headers into one big header.<br>
60Change the name of XML files from XML to something else.<br>
61Remove ltt-base.c.<br>
62<br>
15e89ad6 63* Not planned for integration<br>
4f782cda 64Remove the callback struct from the trace struct.<br>
15e89ad6 65<br>
66<br>
b720b182 67<br>
68* Next experimental release patch division :<br>
69<br>
70ltt-instrumentation.diff<br>
71 - ltt-configmenu.diff (put in ltt-core.diff)<br>
72ltt-facilities-headers.diff<br>
73ltt-facilities-loader.diff<br>
74ltt-facilities.diff<br>
75ltt-instrumentation.diff<br>
76ltt-relayfs.diff<br>
77ltt-time.diff<br>
78ltt-core.diff<br>
79<br>
80<br>
81Mathieu Desnoyers<br>
1f2c88b1 82
83
84</body>
85</html>
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