Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> --- drivers/staging/lttng/ChangeLog | 75 ++++++ drivers/staging/lttng/LICENSE | 27 ++ drivers/staging/lttng/README | 46 ++++ drivers/staging/lttng/gpl-2.0.txt | 339 ++++++++++++++++++++++++ drivers/staging/lttng/lgpl-2.1.txt | 504 ++++++++++++++++++++++++++++++++++++ 5 files changed, 991 insertions(+), 0 deletions(-) create mode 100644 drivers/staging/lttng/ChangeLog create mode 100644 drivers/staging/lttng/LICENSE create mode 100644 drivers/staging/lttng/README create mode 100644 drivers/staging/lttng/gpl-2.0.txt create mode 100644 drivers/staging/lttng/lgpl-2.1.txt diff --git a/drivers/staging/lttng/ChangeLog b/drivers/staging/lttng/ChangeLog new file mode 100644 index 0000000..982d391 --- /dev/null +++ b/drivers/staging/lttng/ChangeLog @@ -0,0 +1,75 @@ +2011-09-30 LTTng modules 2.0-pre10 + * x86-32: override sys_mmap syscall instrumentation + * Fix cast warning + +2011-09-29 LTTng modules 2.0-pre9 + * x86 32 syscalls: fix !CONFIG_UID16 + * Use __string_from_user + * Add __string_from_user + * Rename "comm" context to "procname" + * Fetch "type" name field for mount syscall + * Create common override file for all architectures + * Shrink stack size usage + * Cleanup: remove unused lttng-compat-syscalls.c file + * Support detailed compat syscalls on x86_64 + * Fix syscall table + * Add disabled compat syscalls detail (work in progress) + * Add config compat support for detailed x86_32 syscalls + * Handle newer 3.1+ perf API + * Add dummy x86-32 override headers + * Bind x86-32 syscall headers + * Add x86-32 syscall headers + * Add check for KALLSYMS_ALL in syscall extraction script + * Automate string extraction for syscalls + * Automate syscall filename/pathname extraction + * Add exit to ring_buffer_frontend so module is unloadable + * Add sys_open filename (x86_64) + * Add missing memcpy callback + * copy_from_user and memset + * Add missing alignment after header write + * lib ring buffer: add frontend init as module_init + * lib ring buffer frontend: add missing lock initialization + * ARM: Set bit 0 for thumb mode in kallsyms_lookup_name returned address (missing file) + * ARM: Set bit 0 for thumb mode in kallsyms_lookup_name returned address + * Create override for sys_mmap + * Rename syscalls -> syscall in LTTng ABI + * Use different event name for compat syscalls + * Allow trace syscall table override + * Add dummy override files + * syscall detail: add override capability + * Add pointer pretty-print heuristics + * Add __field_hex + * Rename sys exit errno into ret + * Enable detailed syscalls only for native x86_64 + * Use "unknown" for compat syscalls + * Disable x86-64 specific detailed syscalls for now, until we deal with 32-bit compat + * Fix syscall exit + * Fix sys exit + * Only enable detailed syscalls for x86_64 for now + * Merge unknown syscall method with extended detail method + * Add underscore prefix before event names + * Add syscalls pointers detailed syscall tracing + * Use perl for regexp + * Support generation of syscall probes for those with pointers + * Support detailed syscalls with 0 arguments + * detailed syscall tracing (work in progress) + * Expose /proc/lttng file + * Implement detailed syscall event probe + * Disable perf build for < 2.6.33 kernels + * Syscall detail mode: generate syscall table + * block instrumentation: write cmd as hex sequence + * lttng-events TRACE_EVENT generator cleanup + * block layer instrumentation: fix cmd field + * Remove 0 args syscalls for now from type-aware syscall cb generator + * Generate trace syscall table macros + * Put syscall tracing without arg types back in place + * Detailed system call tracing (TRACE_EVENT() generation for integer support) + * lttng events probes: don't clash with "ctx" variable name + * lib ring buffer must take private pointer copy before decrementing refcount + +2011-08-16 LTTng modules 2.0-pre8 + * Fix metadata buffer wait/wakeup + +2011-08-12 LTTng modules 2.0-pre7 + * Add missing module refcount to lttng_tracepoint_list_fops + * Add license info about lib/ringbuffer/ring_buffer_mmap.c being GPLv2 diff --git a/drivers/staging/lttng/LICENSE b/drivers/staging/lttng/LICENSE new file mode 100644 index 0000000..bb880bf --- /dev/null +++ b/drivers/staging/lttng/LICENSE @@ -0,0 +1,27 @@ +LTTng modules licensing +Mathieu Desnoyers +June 2, 2011 + +* LGPLv2.1/GPLv2 dual-license + +The files contained within this package are licensed under +LGPLv2.1/GPLv2 dual-license (see lgpl-2.1.txt and gpl-2.0.txt for +details), except for files identified by the following sections. + +* GPLv2 license + +These files are licensed exclusively under the GPLv2 license. See +gpl-2.0.txt for details. + +lib/ringbuffer/ring_buffer_splice.c +lib/ringbuffer/ring_buffer_mmap.c +instrumentation/events/mainline/*.h +instrumentation/events/lttng-modules/*.h + +* MIT-style license + +These files are licensed under an MIT-style license: + +lib/prio_heap/lttng_prio_heap.h +lib/prio_heap/lttng_prio_heap.c +lib/bitfield.h diff --git a/drivers/staging/lttng/README b/drivers/staging/lttng/README new file mode 100644 index 0000000..90cf200 --- /dev/null +++ b/drivers/staging/lttng/README @@ -0,0 +1,46 @@ +LTTng 2.0 modules + +Mathieu Desnoyers +November 1st, 2011 + +LTTng 2.0 kernel modules is currently part of the Linux kernel staging +tree. It features (new features since LTTng 0.x): + +- Produces CTF (Common Trace Format) natively, + (http://www.efficios.com/ctf) +- Tracepoints, Function tracer, CPU Performance Monitoring Unit (PMU) + counters, kprobes, and kretprobes support, +- Integrated interface for both kernel and userspace tracing, +- Have the ability to attach "context" information to events in the + trace (e.g. any PMU counter, pid, ppid, tid, comm name, etc). + All the extra information fields to be collected with events are + optional, specified on a per-tracing-session basis (except for + timestamp and event id, which are mandatory). + +To build and install, you need to select "Staging" modules, and the +LTTng kernel tracer. + +Use lttng-tools to control the tracer. LTTng tools should automatically load +the kernel modules when needed. Use Babeltrace to print traces as a +human-readable text log. These tools are available at the following URL: +http://lttng.org/lttng2.0 + +Please note that the LTTng-UST 2.0 (user-space tracing counterpart of LTTng 2.0) +is still in active development and not released yet. + +So far, it has been tested on vanilla Linux kernels 2.6.38, 2.6.39 and 3.0 (on +x86 32/64-bit, and powerpc 32-bit at the moment, build tested on ARM). It should +work fine with newer kernels and other architectures, but expect build issues +with kernels older than 2.6.36. The clock source currently used is the standard +gettimeofday (slower, less scalable and less precise than the LTTng 0.x clocks). +Support for LTTng 0.x clocks will be added back soon into LTTng 2.0. Please +note that lttng-modules 2.0 can build on a Linux kernel patched with the LTTng +0.x patchset, but the lttng-modules 2.0 replace the lttng-modules 0.x, so both +tracers cannot be installed at the same time for a given kernel version. + +* Note about Perf PMU counters support + +Each PMU counter has its zero value set when it is attached to a context with +add-context. Therefore, it is normal that the same counters attached to both the +stream context and event context show different values for a given event; what +matters is that they increment at the same rate. diff --git a/drivers/staging/lttng/gpl-2.0.txt b/drivers/staging/lttng/gpl-2.0.txt new file mode 100644 index 0000000..d511905 --- /dev/null +++ b/drivers/staging/lttng/gpl-2.0.txt @@ -0,0 +1,339 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. 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