X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=README.md;h=be8aa5f89cb8721e3a07bfc12c720bdbd22729d3;hb=9ecc902d927da01b3fe5e0ba35b1210a56960210;hp=e3842d5958db43f5722fd4e900f2722fdeb5e2a2;hpb=f59ec0bee6032a26808d4bddaafb1d6f3e081725;p=lttng-modules.git diff --git a/README.md b/README.md index e3842d59..be8aa5f8 100644 --- a/README.md +++ b/README.md @@ -45,9 +45,10 @@ kernel, do: ### Kernel built-in support It is also possible to build these modules as part of a kernel image. Simply -run the [`built-in.sh`](built-in.sh) script with the path to your kernel -source directory as an argument. It will symlink the lttng-modules directory -in the kernel sources and add an include in the kernel Makefile. +run the [`scripts/built-in.sh`](scripts/built-in.sh) script with the path to +your kernel source directory as an argument. It will symlink the +lttng-modules directory in the kernel sources and add an include in the kernel +Makefile. Then configure your kernel as usual and enable the `CONFIG_LTTNG` option. @@ -56,14 +57,16 @@ Then configure your kernel as usual and enable the `CONFIG_LTTNG` option. Make sure your target kernel has the following config options enabled: - - `CONFIG_MODULES`: loadable module support + - `CONFIG_MODULES`: loadable module support (not strictly required + when built into the kernel) - `CONFIG_KALLSYMS`: see files in [`wrapper`](wrapper); this is necessary until the few required missing symbols are exported to GPL modules from mainline - `CONFIG_HIGH_RES_TIMERS`: needed for LTTng 2.x clock source - `CONFIG_TRACEPOINTS`: kernel tracepoint instrumentation (enabled as a side-effect of any of the perf/ftrace/blktrace - instrumentation features) + instrumentation features). + - `CONFIG_KPROBES` (5.7+): use kallsyms for kernel 5.7 and newer. ### Supported (optional) kernel config options