code.ossystems Code Review - openembedded-core.git/blob

   1 From f419315f28a1da656c4faa8a852a2928ce38c72d Mon Sep 17 00:00:00 2001
   2 From: Ovidiu Panait <ovidiu.panait@windriver.com>
   3 Date: Thu, 14 May 2020 14:27:17 +0300
   4 Subject: [PATCH 4/4] Update: Use vmalloc_sync_mappings for stable kernels
   5
   6 Starting from v5.4.28/v5.2.37/v4.19.113/v4.14.175/v4.9.218/v4.4.218, stable
   7 kernel branches backported v5.6 upstream commit [1], causing the following
   8 warnings:
   9 ...
  10 [  483.242037] LTTng: vmalloc_sync_all symbol lookup failed.
  11 [  483.257056] Page fault handler and NMI tracing might trigger faults.
  12 ...
  13
  14 Extend check for vmalloc_sync_mappings for stable kernels as well.
  15
  16 [1] https://github.com/torvalds/linux/commit/763802b53a427ed3cbd419dbba255c414fdd9e7c
  17
  18 [ Edit: minor coding style fix by Mathieu Desnoyers. ]
  19
  20 Upstream-Status: Backport [https://github.com/lttng/lttng-modules/commit/5939591f87dc291bc858caf72decfb8569d802e3]
  21
  22 Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
  23 Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  24 Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
  25 ---
  26  wrapper/vmalloc.h | 17 +++++++++++++++--
  27  1 file changed, 15 insertions(+), 2 deletions(-)
  28
  29 diff --git a/wrapper/vmalloc.h b/wrapper/vmalloc.h
  30 index d905f60..c7538ae 100644
  31 --- a/wrapper/vmalloc.h
  32 +++ b/wrapper/vmalloc.h
  33 @@ -20,8 +20,15 @@
  34
  35  #include <linux/kallsyms.h>
  36  #include <wrapper/kallsyms.h>
  37 +#include <lttng-kernel-version.h>
  38
  39 -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0))
  40 +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0) \
  41 +  || LTTNG_KERNEL_RANGE(5,4,28, 5,5,0)            \
  42 +  || LTTNG_KERNEL_RANGE(5,2,37, 5,3,0)            \
  43 +  || LTTNG_KERNEL_RANGE(4,19,113, 4,20,0)         \
  44 +  || LTTNG_KERNEL_RANGE(4,14,175, 4,15,0)         \
  45 +  || LTTNG_KERNEL_RANGE(4,9,218, 4,10,0)          \
  46 +  || LTTNG_KERNEL_RANGE(4,4,218, 4,5,0))
  47
  48  static inline
  49  void wrapper_vmalloc_sync_mappings(void)
  50 @@ -72,7 +79,13 @@ void wrapper_vmalloc_sync_mappings(void)
  51
  52  #else
  53
  54 -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0))
  55 +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0) \
  56 +  || LTTNG_KERNEL_RANGE(5,4,28, 5,5,0)            \
  57 +  || LTTNG_KERNEL_RANGE(5,2,37, 5,3,0)            \
  58 +  || LTTNG_KERNEL_RANGE(4,19,113, 4,20,0)         \
  59 +  || LTTNG_KERNEL_RANGE(4,14,175, 4,15,0)         \
  60 +  || LTTNG_KERNEL_RANGE(4,9,218, 4,10,0)          \
  61 +  || LTTNG_KERNEL_RANGE(4,4,218, 4,5,0))
  62
  63  static inline
  64  void wrapper_vmalloc_sync_mappings(void)
  65 --
  66 2.17.1
  67