X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=doc%2Fman%2Flttng-ust.3.txt;h=0593406a857a1ccf68cce4875239faa2c7fb3c25;hb=e09051727e07b47e43b4deffb986985fbb2c513d;hp=8ecda775b3477f363a8c234109e4d9a95802f67d;hpb=d1194248c71fd4767382b4ea40dfa1cea3db1fd7;p=lttng-ust.git diff --git a/doc/man/lttng-ust.3.txt b/doc/man/lttng-ust.3.txt index 8ecda775..0593406a 100644 --- a/doc/man/lttng-ust.3.txt +++ b/doc/man/lttng-ust.3.txt @@ -738,6 +738,12 @@ without a following man:exec(3) family system call. The library application with the `LD_PRELOAD` environment variable (see man:ld.so(8)). +To use `liblttng-ust` with a daemon application which closes file +descriptors that were not opened by it, preload the `liblttng-ust-fd.so` +library before you start the application. Typical use cases include +daemons closing all file descriptors after man:fork(2), and buggy +applications doing ``double-closes''. + Context information ~~~~~~~~~~~~~~~~~~~ @@ -763,12 +769,16 @@ information about event filtering. reverse-lookup the source location that caused the event to be emitted. -+perf:thread:COUNTER+:: +`perf:thread:COUNTER`:: perf counter named 'COUNTER'. Use `lttng add-context --list` to list the available perf counters. + Only available on IA-32 and x86-64 architectures. +`perf:thread:raw:rN:NAME`:: + perf counter with raw ID 'N' and custom name 'NAME'. See + man:lttng-add-context(1) for more details. + `pthread_id`:: POSIX thread identifier. Can be used on architectures where `pthread_t` maps nicely to an `unsigned long` type.