Thread (8 messages) 8 messages, 2 authors, 2016-12-02

Re: [PATCH v2 2/5] ia64: reuse append_elf_note() and final_note() functions

From: Hari Bathini <hidden>
Date: 2016-12-02 11:26:59
Also in: kexec, lkml

Hi Dave,


Thanks for the review.


On Thursday 01 December 2016 10:26 AM, Dave Young wrote:
Hi Hari

Personally I like V1 more, but split the patch 2 is easier for ia64
people to reivew.  I did basic x86 testing, it runs ok.

On 11/25/16 at 05:24pm, Hari Bathini wrote:
quoted
Get rid of multiple definitions of append_elf_note() & final_note()
functions. Reuse these functions compiled under CONFIG_CRASH_CORE.

Signed-off-by: Hari Bathini <redacted>
---
  arch/ia64/kernel/crash.c   |   22 ----------------------
  include/linux/crash_core.h |    4 ++++
  kernel/crash_core.c        |    6 +++---
  kernel/kexec_core.c        |   28 ----------------------------
  4 files changed, 7 insertions(+), 53 deletions(-)
diff --git a/arch/ia64/kernel/crash.c b/arch/ia64/kernel/crash.c
index 2955f35..75859a0 100644
--- a/arch/ia64/kernel/crash.c
+++ b/arch/ia64/kernel/crash.c
@@ -27,28 +27,6 @@ static int kdump_freeze_monarch;
  static int kdump_on_init = 1;
  static int kdump_on_fatal_mca = 1;
  
-static inline Elf64_Word
-*append_elf_note(Elf64_Word *buf, char *name, unsigned type, void *data,
-		size_t data_len)
-{
-	struct elf_note *note = (struct elf_note *)buf;
-	note->n_namesz = strlen(name) + 1;
-	note->n_descsz = data_len;
-	note->n_type   = type;
-	buf += (sizeof(*note) + 3)/4;
-	memcpy(buf, name, note->n_namesz);
-	buf += (note->n_namesz + 3)/4;
-	memcpy(buf, data, data_len);
-	buf += (data_len + 3)/4;
-	return buf;
-}
-
-static void
-final_note(void *buf)
-{
-	memset(buf, 0, sizeof(struct elf_note));
-}
-
The above IA64 version looks better than the functions in kexec_core.c
about the Elf64_Word type usage and the simpler final_note function.
Hmmm.. Is void* better over Elf64_Word* to be agnostic of Elf32 or Elf64 
type?

Care to update crash_core.c to use this instead?
Sure. Will resend.

Thanks
Hari
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