Commit 54a69e55 authored Nov 28, 2011 by Mathieu Desnoyers Committed by Greg Kroah-Hartman Nov 29, 2011

lttng: syscall instrumentation



x86-32 and x86-64 system call instrumentation, along with the
lttng-syscalls-generate-headers.sh script that generates the headers
from the system call list. See README for details.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

parent 763be8c0

drivers/staging/lttng/instrumentation/syscalls/3.0.4/x86-64-syscalls-3.0.4

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drivers/staging/lttng/instrumentation/syscalls/3.1.0-rc6/x86-32-syscalls-3.1.0-rc6

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drivers/staging/lttng/instrumentation/syscalls/README

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Original line number	Diff line number	Diff line
		LTTng system call tracing

		1) lttng-syscall-extractor

		You need to build a kernel with CONFIG_FTRACE_SYSCALLS=y and
		CONFIG_KALLSYMS_ALL=y for extraction. Apply the linker patch to get your
		kernel to keep the system call metadata after boot. Then build and load
		the LTTng syscall extractor module. The module will fail to load (this
		is expected). See the dmesg output for system call metadata.

		2) Generate system call TRACE_EVENT().

		Take the dmesg metadata and feed it to lttng-syscalls-generate-headers.sh, e.g.,
		from the instrumentation/syscalls directory. See the script header for
		usage example.

		After these are created, we just need to follow the new system call additions,
		no need to regenerate the whole thing, since system calls are only appended to.

drivers/staging/lttng/instrumentation/syscalls/headers/compat_syscalls_integers.h

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Original line number	Diff line number	Diff line
		#ifdef CONFIG_X86_64
		#include "x86-32-syscalls-3.1.0-rc6_integers.h"
		#endif

drivers/staging/lttng/instrumentation/syscalls/headers/compat_syscalls_pointers.h

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Original line number	Diff line number	Diff line
		#ifdef CONFIG_X86_64
		#include "x86-32-syscalls-3.1.0-rc6_pointers.h"
		#endif