提交 016f8cf0 编写于 作者: K Kevin Hao 提交者: Scott Wood

powerpc: book3e_64: fix the align size for paca_struct

All the cache line size of the current book3e 64bit SoCs are 64 bytes.
So we should use this size to align the member of paca_struct.
This only change the paca_struct's members which are private to book3e
CPUs, and should not have any effect to book3s ones. With this, we save
192 bytes. Also change it to __aligned(size) since it is preferred over
__attribute__((aligned(size))).

Before:
	/* size: 1920, cachelines: 30, members: 46 */
	/* sum members: 1667, holes: 6, sum holes: 141 */
	/* padding: 112 */

After:
	/* size: 1728, cachelines: 27, members: 46 */
	/* sum members: 1667, holes: 4, sum holes: 13 */
	/* padding: 48 */
Signed-off-by: NKevin Hao <haokexin@gmail.com>
Signed-off-by: NScott Wood <scottwood@freescale.com>
上级 2e51563d
...@@ -106,9 +106,9 @@ struct paca_struct { ...@@ -106,9 +106,9 @@ struct paca_struct {
#endif /* CONFIG_PPC_STD_MMU_64 */ #endif /* CONFIG_PPC_STD_MMU_64 */
#ifdef CONFIG_PPC_BOOK3E #ifdef CONFIG_PPC_BOOK3E
u64 exgen[8] __attribute__((aligned(0x80))); u64 exgen[8] __aligned(0x40);
/* Keep pgd in the same cacheline as the start of extlb */ /* Keep pgd in the same cacheline as the start of extlb */
pgd_t *pgd __attribute__((aligned(0x80))); /* Current PGD */ pgd_t *pgd __aligned(0x40); /* Current PGD */
pgd_t *kernel_pgd; /* Kernel PGD */ pgd_t *kernel_pgd; /* Kernel PGD */
/* Shared by all threads of a core -- points to tcd of first thread */ /* Shared by all threads of a core -- points to tcd of first thread */
......
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