Package: gdb Version: 7.12-6 Severity: wishlist Tags: patch Dear maintainer,
please enable the --with-intel-pt configuration option for gdb. This allows for efficient Record-And-Play functionality in GDB [1] Intel PT (Processor Trace) provides hardware-level tracing capabilities with minimal performance overhead on modern Intel CPUs (beginning with the Broadwell micro-architecture). For more information about Intel PT, please refer to [2] and [3]. The Intel PT kernel driver has been merged in 4.1 and various bug fixes have come since ([4]). GDB supports the Intel PT backend for reverse-stepping / backwards-debugging since 7.10. Decoding of the packet stream generated by the Intel hardware is done by Intel's Processor Trace Decoding Library libipt [5]. Thus, this patchs adds a build-dependency on libipt-dev and a runtime dependency on libipt1. Please see the patch attached. Greetings Jack [1] https://sourceware.org/gdb/onlinedocs/gdb/Process-Record-and-Replay.html [2] https://software.intel.com/en-us/blogs/2013/09/18/processor-tracing [3] https://old.lwn.net/Articles/648154/ [4] http://halobates.de/blog/p/410 [5] https://github.com/01org/processor-trace
From b3fa17d7a4d2eb5d50ecd81f0ae339139b34d854 Mon Sep 17 00:00:00 2001 From: Jack Henschel <jack...@mailbox.org> Date: Mon, 21 Aug 2017 13:21:35 +0200 Subject: [PATCH] Enable Intel PT --- debian/control.in | 1 + debian/rules | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/debian/control.in b/debian/control.in index 917c36cdb..db3dafdb7 100644 --- a/debian/control.in +++ b/debian/control.in @@ -35,6 +35,7 @@ Build-Depends: liblzma-dev, libbabeltrace-dev [amd64 armel armhf i386 kfreebsd-amd64 kfreebsd-i386 mips mipsel mips64el powerpc s390x], libbabeltrace-ctf-dev [amd64 armel armhf i386 kfreebsd-amd64 kfreebsd-i386 mips mipsel mips64el powerpc s390x], + libipt-dev [amd64], python-dev, # Python3 build python3-dev, diff --git a/debian/rules b/debian/rules index 74835a2f7..3850cc53b 100755 --- a/debian/rules +++ b/debian/rules @@ -93,6 +93,11 @@ ifneq (,$(filter $(DEB_HOST_ARCH),amd64 armel armhf i386 kfreebsd-amd64 kfreebsd arch_config_args += --with-babeltrace endif +# Enable Intel Processor Trace (PT) on Linux x86 platform +ifneq (,$(filter $(DEB_HOST_ARCH),amd64 i386)) + arch_config_args += --with-intel-pt +endif + ifdef GDB_TARGET run_tests := no -- 2.14.1
signature.asc
Description: OpenPGP digital signature