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From: Andi Kleen <andi@firstfloor.org>
To: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: [PATCH prototype] [5/8] Add ELF constants for pbitmaps
Date: Tue, 18 Mar 2008 02:09:39 +0100 (CET)	[thread overview]
Message-ID: <20080318010939.566791B41E1@basil.firstfloor.org> (raw)
In-Reply-To: <20080318209.039112899@firstfloor.org>

I made up some numbers for the present bitmap phdrs and shdrs.

For serious use this would probably require an allocation somewhere.


Signed-off-by: Andi Kleen <andi@firstfloor.org>

---
 include/linux/elf.h |    4 ++++
 1 file changed, 4 insertions(+)

Index: linux/include/linux/elf.h
===================================================================
--- linux.orig/include/linux/elf.h
+++ linux/include/linux/elf.h
@@ -49,6 +49,7 @@ typedef __s64	Elf64_Sxword;
 #define PT_GNU_EH_FRAME		0x6474e550
 
 #define PT_GNU_STACK	(PT_LOOS + 0x474e551)
+#define PT_PRESENT_BITMAP (PT_GNU_STACK + 1)
 
 /* These constants define the different elf file types */
 #define ET_NONE   0
@@ -230,6 +231,8 @@ typedef struct elf64_hdr {
 #define PF_W		0x2
 #define PF_X		0x1
 
+#define PF_PLEASE_LOAD_SHDRS		0x8 /* hack. checked on PT_GNU_STACK */
+
 typedef struct elf32_phdr{
   Elf32_Word	p_type;
   Elf32_Off	p_offset;
@@ -270,6 +273,7 @@ typedef struct elf64_phdr {
 #define SHT_HIPROC	0x7fffffff
 #define SHT_LOUSER	0x80000000
 #define SHT_HIUSER	0xffffffff
+#define SHT_PRESENT_BITMAP (SHT_LOPROC - 1000)
 
 /* sh_flags */
 #define SHF_WRITE	0x1

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  parent reply	other threads:[~2008-03-18  1:09 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-18  1:09 [PATCH prototype] [0/8] Predictive bitmaps for ELF executables Andi Kleen
2008-03-18  1:09 ` [PATCH prototype] [1/8] Give ELF shdr types a name Andi Kleen
2008-03-18  1:09 ` [PATCH prototype] [2/8] Add support to override mmap exec write protection with O_FORCEWRITE Andi Kleen
2008-03-18  1:09 ` [PATCH prototype] [3/8] Make readahead max pinned value a sysctl Andi Kleen
2008-03-18  1:09 ` [PATCH prototype] [4/8] Add readahead function to read-ahead based on a bitmap Andi Kleen
2008-03-18  1:09 ` Andi Kleen [this message]
2008-03-18  1:09 ` [PATCH prototype] [6/8] Core predictive bitmap engine Andi Kleen
2008-03-18  1:09 ` [PATCH prototype] [7/8] Add the sysctls to control pbitmaps Andi Kleen
2008-03-18  1:09 ` [PATCH prototype] [8/8] Add mmap_full_slurp support Andi Kleen
2008-03-18  7:36 ` [PATCH prototype] [0/8] Predictive bitmaps for ELF executables Andrew Morton
2008-03-18 14:18   ` Andi Kleen
2008-03-18 16:57     ` Andrew Morton
2008-03-18 17:20       ` Andi Kleen
2008-03-18 17:44         ` Andrew Morton
2008-03-19  8:32           ` Andi Kleen
2008-03-19  9:04             ` Andrew Morton
2008-03-19 22:45               ` Ulrich Drepper
2008-03-19 23:12                 ` Andrew Morton
2008-03-20  0:09                   ` David Miller, Andrew Morton
2008-03-20  9:00                 ` Andi Kleen
2008-03-21 17:15                   ` Ulrich Drepper
2008-03-21 17:26                     ` Andi Kleen
2008-03-22  4:36                       ` Ulrich Drepper
2008-03-22  7:17                         ` Andi Kleen
2008-03-22  7:24                           ` Nicholas Miell
2008-03-22  9:10                             ` Andi Kleen
2008-03-22 10:16                               ` Nicholas Miell
2008-03-22 14:29                                 ` Andi Kleen
2008-03-23 13:25                                   ` Pavel Machek
2008-03-23 17:08                                     ` Andi Kleen
2008-03-24 16:24                                       ` Pavel Machek
2008-03-24  4:20                               ` Ulrich Drepper
2008-03-24  5:16                                 ` Nicholas Miell
2008-03-24  5:26                                   ` Andi Kleen
2008-03-24 19:42                                   ` Ulrich Drepper
2008-03-24 21:47                                     ` Nicholas Miell
2008-03-25  7:54                                     ` Andi Kleen
2008-03-26 18:15                                       ` Ulrich Drepper
2008-03-26 18:54                                         ` Andi Kleen
2008-03-22  4:38                       ` Ulrich Drepper
2008-03-20  0:15               ` Diego Calleja

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