[patch 1/5] Add comments to the PDA structure to annotate offsets

Arjan van de Ven
2006-07-28T16:06:44Z

Subject: [patch 1/5] Add comments to the PDA structure to annotate offsets
From: Arjan van de Ven <arjan@linux.intel.com>

Change the comments in the pda structure to make the first fields to have
their offset documented (the rest of the fields follows in a later patch)
and to have the comments aligned.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
CC: Andi Kleen <ak@suse.de>
---
include/asm-x86_64/pda.h | 14 ++++++--------
1 file changed, 6 insertions(+), 8 deletions(-)

Index: linux-2.6.18-rc2-git5-stackprot/include/asm-x86_64/pda.h
===================================================================
--- linux-2.6.18-rc2-git5-stackprot.orig/include/asm-x86_64/pda.h
+++ linux-2.6.18-rc2-git5-stackprot/include/asm-x86_64/pda.h
@@ -9,14 +9,12 @@

/* Per processor datastructure. %gs points to it while the kernel runs */
struct x8664_pda {
- struct task_struct *pcurrent; /* Current process */
- unsigned long data_offset; /* Per cpu data offset from linker address */
- unsigned long kernelstack; /* top of kernel stack for current */
- unsigned long oldrsp; /* user rsp for system call */
-#if DEBUG_STKSZ > EXCEPTION_STKSZ
- unsigned long debugstack; /* #DB/#BP stack. */
-#endif
- int irqcount; /* Irq nesting counter. Starts with -1 */
+ struct task_struct *pcurrent; /* 0 */ /* Current process */
+ unsigned long data_offset; /* 8 */ /* Per cpu data offset from linker address */
+ unsigned long kernelstack; /* 16 */ /* top of kernel stack for current */
+ unsigned long oldrsp; /* 24 */ /* user rsp for system call */
+ unsigned long debugstack; /* 32 */ /* #DB/#BP stack. */
+ int irqcount; /* 40 */ /* Irq nesting counter. Starts with -1 */
int cpunumber; /* Logical CPU number */
char *irqstackptr; /* top of irqstack */
int nodenumber; /* number of current node */