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Message-ID: <878u9zbjra.fsf@ashishki-desk.ger.corp.intel.com>
Date: Wed, 29 Jul 2015 08:44:25 +0300
From: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
To: Takao Indoh <indou.takao@...fujitsu.com>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>,
"H. Peter Anvin" <hpa@...or.com>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Vivek Goyal <vgoyal@...hat.com>
Cc: linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: [PATCH RFC 0/3] x86: Intel Processor Trace Logger
Takao Indoh <indou.takao@...fujitsu.com> writes:
> Hi all,
>
> This patch creates log buffer for Intel PT and enable logging at boot
> time. When kernel panic occurs, we can get this log buffer from
> crashdump file by kdump, and reconstruct the flow that led to the panic.
Good to see this work going forward!
> Takao Indoh (3):
> x86: Add Intel PT common files
> x86: Add Intel PT logger
> x86: Stop Intel PT and save its registers when panic occurs
>
> arch/x86/Kconfig | 16 ++
> arch/x86/include/asm/intel_pt.h | 84 +++++++++
> arch/x86/kernel/cpu/Makefile | 3 +
> arch/x86/kernel/cpu/intel_pt.h | 131 -------------
> arch/x86/kernel/cpu/intel_pt_cap.c | 69 +++++++
> arch/x86/kernel/cpu/intel_pt_log.c | 288 +++++++++++++++++++++++++++++
> arch/x86/kernel/cpu/intel_pt_perf.h | 78 ++++++++
> arch/x86/kernel/cpu/perf_event_intel_pt.c | 54 +-----
> arch/x86/kernel/crash.c | 9 +
> 9 files changed, 556 insertions(+), 176 deletions(-)
> create mode 100644 arch/x86/include/asm/intel_pt.h
> delete mode 100644 arch/x86/kernel/cpu/intel_pt.h
> create mode 100644 arch/x86/kernel/cpu/intel_pt_cap.c
> create mode 100644 arch/x86/kernel/cpu/intel_pt_log.c
> create mode 100644 arch/x86/kernel/cpu/intel_pt_perf.h
One note here: you want to use -M with git-format-patch so that renames
are handled better.
Regards,
--
Alex
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