kernel_samsung_sm7125

jenna

History

Fenghua Yu 5fb7dc37dc define new percpu interface for shared data per cpu data section contains two types of data. One set which is exclusively accessed by the local cpu and the other set which is per cpu, but also shared by remote cpus. In the current kernel, these two sets are not clearely separated out. This can potentially cause the same data cacheline shared between the two sets of data, which will result in unnecessary bouncing of the cacheline between cpus. One way to fix the problem is to cacheline align the remotely accessed per cpu data, both at the beginning and at the end. Because of the padding at both ends, this will likely cause some memory wastage and also the interface to achieve this is not clean. This patch: Moves the remotely accessed per cpu data (which is currently marked as ____cacheline_aligned_in_smp) into a different section, where all the data elements are cacheline aligned. And as such, this differentiates the local only data and remotely accessed data cleanly. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Christoph Lameter <clameter@sgi.com> Cc: <linux-arch@vger.kernel.org> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		18 years ago
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Makefile	…
asm-offsets.c	…
binfmt_elf32.c	…
cache.c	…
drivers.c	…
entry.S	[PARISC] fix "reduce size of task_struct on 64-bit machines" fallout	18 years ago
firmware.c	[PARISC] spelling fixes: arch/parisc/	18 years ago
hardware.c	[PARISC] fix section mismatches in arch/parisc/kernel	18 years ago
head.S	…
hpmc.S	[PARISC] Fix kernel panic in check_ivt	18 years ago
init_task.c	…
inventory.c	…
irq.c	[PARISC] remove global_ack_eiem	18 years ago
module.c	…
pa7300lc.c	…
pacache.S	…
parisc_ksyms.c	…
pci-dma.c	parisc: convert /proc/gsc/pcxl_dma to seq_file	18 years ago
pci.c	…
pdc_chassis.c	…
pdc_cons.c	…
perf.c	[PARISC] spelling fixes: arch/parisc/	18 years ago
perf_asm.S	…
perf_images.h	…
process.c	[PARISC] be more defensive in process.c::get_wchan	18 years ago
processor.c	[PARISC] fix section mismatches in arch/parisc/kernel	18 years ago
ptrace.c	PTRACE_PEEKDATA consolidation	18 years ago
real2.S	…
semaphore.c	…
setup.c	[PARISC] spelling fixes: arch/parisc/	18 years ago
signal.c	…
signal32.c	…
signal32.h	[PARISC] spelling fixes: arch/parisc/	18 years ago
smp.c	[PARISC] fix section mismatch in smp.c	18 years ago
sys32.h	…
sys_parisc.c	…
sys_parisc32.c	[PARISC] ROUND_UP macro cleanup in arch/parisc	18 years ago
syscall.S	[PARISC] Fix bug when syscall nr is __NR_Linux_syscalls	18 years ago
syscall_table.S	[PARISC] Wire up utimensat/signalfd/timerfd/eventfd syscalls	18 years ago
time.c	[PARISC] spelling fixes: arch/parisc/	18 years ago
topology.c	…
traps.c	Report that kernel is tainted if there was an OOPS	18 years ago
unaligned.c	…
unwind.c	kallsyms: make KSYM_NAME_LEN include space for trailing '\0'	18 years ago
vmlinux.lds.S	define new percpu interface for shared data	18 years ago