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  1. 24 8月, 2015 2 次提交
  3. 20 8月, 2015 4 次提交
    • M
      genksyms: Regenerate parser · 5b733fac
      由 Michal Marek 提交于 
      Rebuild the parser after commit 1c722503 (genksyms: Duplicate
function pointer type definitions segfault), using bison 2.7.
Signed-off-by: NMichal Marek <mmarek@suse.com>
      5b733fac
    • R
      genksyms: Duplicate function pointer type definitions segfault · 1c722503
      由 Richard Yao 提交于 
      I noticed that genksyms will segfault when it sees duplicate function
pointer type declaration when I placed the same function pointer
definition in two separate headers in a local branch as an intermediate
step of some refactoring. This can be reproduced by piping the following
minimal test case into `genksyms -r /dev/null` or alternatively, putting
it into a C file attempting a build:

typedef int (*f)();
typedef int (*f)();

Attaching gdb to genksyms to understand this failure is useless without
changing CFLAGS to emit debuginfo. Once you have debuginfo, you will
find that the failure is that `char *s` was NULL and the program
executed `while(*s)`. At which point, further debugging requires
familiarity with compiler front end / parser development.

What happens is that flex identifies the first instance of the token "f"
as IDENT and the yacc parser adds it to the symbol table. On the second
instance, flex will identify "f" as TYPE, which triggers an error case
in the yacc parser. Given that TYPE would have been IDENT had it not
been in the symbol table, the the segmentaion fault could be avoided by
treating TYPE as IDENT in the affected rule.

Some might consider placing identical function pointer type declarations
in different headers to be poor style might consider a failure to be
beneficial. However, failing through a segmentation fault makes the
cause non-obvious and can waste the time of anyone who encounters it.
Signed-off-by: NRichard Yao <richard.yao@clusterhq.com>
Acked-by: NMadhuri Yechuri <madhuriyechuri@clusterhq.com>
Signed-off-by: NMichal Marek <mmarek@suse.com>
      1c722503
    • A
      kbuild: Fix .text.unlikely placement · 9bebe9e5
      由 Andi Kleen 提交于 
      When building a kernel with .text.unlikely text the unlikely text for
each translation unit was put next to the main .text code in the
final vmlinux.

The problem is that the linker doesn't allow more specific submatches
of a section name in a different linker script statement after the
main match.

So we need to move them all into one line. With that change
.text.unlikely is at the end of everything again.

I also moved .text.hot into the same statement though, even though
that's not strictly needed.
Signed-off-by: NAndi Kleen <ak@linux.intel.com>
Signed-off-by: NMichal Marek <mmarek@suse.com>
      9bebe9e5
    • P
      Avoid conflict with host definitions when cross-compiling · 3c0561e0
      由 Pavel Fedin 提交于 
      Certain platforms (e. g. BSD-based ones) define some ELF constants
according to host. This patch fixes problems with cross-building
Linux kernel on these platforms (e. g. building ARM 32-bit version
on x86-64 host).
Signed-off-by: NPavel Fedin <p.fedin@samsung.com>
Signed-off-by: NMichal Marek <mmarek@suse.com>
      3c0561e0
  5. 06 7月, 2015 2 次提交
    • L
      Linux 4.2-rc1 · d770e558
      由 Linus Torvalds 提交于
      d770e558
    • L
      Merge tag 'platform-drivers-x86-v4.2-2' of... · a585d2b7
      由 Linus Torvalds 提交于 
      Merge tag 'platform-drivers-x86-v4.2-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86

Pull late x86 platform driver updates from Darren Hart:
 "The following came in a bit later and I wanted them to bake in next a
  few more days before submitting, thus the second pull.

  A new intel_pmc_ipc driver, a symmetrical allocation and free fix in
  dell-laptop, a couple minor fixes, and some updated documentation in
  the dell-laptop comments.

  intel_pmc_ipc:
   - Add Intel Apollo Lake PMC IPC driver

  tc1100-wmi:
   - Delete an unnecessary check before the function call "kfree"

  dell-laptop:
   - Fix allocating & freeing SMI buffer page
   - Show info about WiGig and UWB in debugfs
   - Update information about wireless control"

* tag 'platform-drivers-x86-v4.2-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
  intel_pmc_ipc: Add Intel Apollo Lake PMC IPC driver
  tc1100-wmi: Delete an unnecessary check before the function call "kfree"
  dell-laptop: Fix allocating & freeing SMI buffer page
  dell-laptop: Show info about WiGig and UWB in debugfs
  dell-laptop: Update information about wireless control
      a585d2b7
  7. 05 7月, 2015 32 次提交