linux-kernel - [PATCH v2] perf, x86-mm: declare page-faults tracepoints like irq-vectors ones

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Message-Id: <20161027233134.12117-1-alexis.berlemont@gmail.com>
Date:   Fri, 28 Oct 2016 01:31:33 +0200
From:   Alexis Berlemont <alexis.berlemont@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Alexis Berlemont <alexis.berlemont@...il.com>,
        peterz@...radead.org, mingo@...hat.com, acme@...nel.org,
        alexander.shishkin@...ux.intel.com
Subject: [PATCH v2] perf, x86-mm: declare page-faults tracepoints like irq-vectors ones

So, would you be OK with the following patch ? 

There is a symmetry just like irq_vectors tracepoints:

# perf list | grep -E "exception|irq_vectors"
  exceptions:page_fault_kernel_entry                 [Tracepoint event]
  exceptions:page_fault_kernel_exit                  [Tracepoint event]
  exceptions:page_fault_user_entry                   [Tracepoint event]
  exceptions:page_fault_user_exit                    [Tracepoint event]
  irq_vectors:call_function_entry                    [Tracepoint event]
  irq_vectors:call_function_exit                     [Tracepoint event]
...

Maybe 2 tracepoints (instead of 4) should have been enough; however,
there were already 1 tracepoint per mode before.

Alexis.

Alexis Berlemont (1):
  perf, x86-mm: declare page-faults tracepoints like irq-vectors ones

 arch/x86/include/asm/trace/exceptions.h | 17 ++++++++++++++++-
 arch/x86/mm/fault.c                     | 17 ++++++++++++++---
 2 files changed, 30 insertions(+), 4 deletions(-)

-- 
2.10.1