The patch titled
blackfin arch: define a new cacheline_aligned attribute to put it in L1 data memory with linkscript update
has been added to the -mm tree. Its filename is
blackfin-arch-define-a-new-cacheline_aligned-attribute-to-put-it-in-l1-data-memory-with-linkscript-update.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: blackfin arch: define a new cacheline_aligned attribute to put it in L1 data memory with linkscript update
From: "Wu, Bryan" <bryan.wu@xxxxxxxxxx>
Signed-off-by: Bryan Wu <bryan.wu@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/blackfin/Kconfig | 8 ++++++++
arch/blackfin/kernel/vmlinux.lds.S | 8 ++++++++
include/asm-blackfin/cache.h | 11 +++++++----
3 files changed, 23 insertions(+), 4 deletions(-)
diff -puN arch/blackfin/Kconfig~blackfin-arch-define-a-new-cacheline_aligned-attribute-to-put-it-in-l1-data-memory-with-linkscript-update arch/blackfin/Kconfig
--- a/arch/blackfin/Kconfig~blackfin-arch-define-a-new-cacheline_aligned-attribute-to-put-it-in-l1-data-memory-with-linkscript-update
+++ a/arch/blackfin/Kconfig
@@ -513,6 +513,14 @@ config IP_CHECKSUM_L1
If enabled IP Checksum function is linked
into L1 instruction memory.(less latency)
+config CACHELINE_ALIGNED_L1
+ bool "Locate cacheline_aligned data to L1 Data Memory"
+ default y
+ depends on !BF531
+ help
+ If enabled cacheline_anligned data is linked
+ into L1 data memory.(less latency)
+
config SYSCALL_TAB_L1
bool "Locate Syscall Table L1 Data Memory"
default n
diff -puN arch/blackfin/kernel/vmlinux.lds.S~blackfin-arch-define-a-new-cacheline_aligned-attribute-to-put-it-in-l1-data-memory-with-linkscript-update arch/blackfin/kernel/vmlinux.lds.S
--- a/arch/blackfin/kernel/vmlinux.lds.S~blackfin-arch-define-a-new-cacheline_aligned-attribute-to-put-it-in-l1-data-memory-with-linkscript-update
+++ a/arch/blackfin/kernel/vmlinux.lds.S
@@ -173,6 +173,9 @@ SECTIONS
__sbss_l1 = .;
*(.l1.bss)
+ . = ALIGN(32);
+ *(.data_l1.cacheline_aligned)
+
. = ALIGN(4);
__ebss_l1 = .;
} > l1_data_a AT > ram
@@ -197,6 +200,11 @@ SECTIONS
. = ALIGN(0x2000);
*(.data.init_task)
*(.data)
+
+ . = ALIGN(32);
+ *(.data.cacheline_aligned)
+
+ . = ALIGN(0x2000);
__edata = .;
} > ram
diff -puN include/asm-blackfin/cache.h~blackfin-arch-define-a-new-cacheline_aligned-attribute-to-put-it-in-l1-data-memory-with-linkscript-update include/asm-blackfin/cache.h
--- a/include/asm-blackfin/cache.h~blackfin-arch-define-a-new-cacheline_aligned-attribute-to-put-it-in-l1-data-memory-with-linkscript-update
+++ a/include/asm-blackfin/cache.h
@@ -10,13 +10,16 @@
*/
#define L1_CACHE_SHIFT 5
#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
+#define SMP_CACHE_BYTES L1_CACHE_BYTES
/*
- * Don't make __cacheline_aligned and
- * ____cacheline_aligned defined in include/linux/cache.h
+ * Put cacheline_aliged data to L1 data memory
*/
-#define __cacheline_aligned
-#define ____cacheline_aligned
+#ifdef CONFIG_CACHELINE_ALIGNED_L1
+#define __cacheline_aligned \
+ __attribute__((__aligned__(L1_CACHE_BYTES), \
+ __section__(".data_l1.cacheline_aligned")))
+#endif
/*
* largest L1 which this arch supports
_
Patches currently in -mm which might be from bryan.wu@xxxxxxxxxx are
usb-gadget-rndis-fix-struct-rndis_packet_msg_type.patch
blackfin-Documentation.patch
blackfin-arch.patch
blackfin-arch-balance-parenthesis-in-macros.patch
blackfin-arch-2.6.21-rc4-mm1-update.patch
blackfin-arch-fix-struct-dmasg-packing-bug.patch
blackfin-arch-cleanup-cache-header-file.patch
blackfin-arch-fix-reboot-kernel-mounting-spi-flash-print-error-bug.patch
blackfin-arch-fix-compiling-error-in-flat-c-file.patch
blackfin-arch-power-management-replace-firmware-disk-mode.patch
blackfin-arch-add-kdebug-header-file.patch
blackfin-arch-fix-bug-bf561-rev-id-are-8-bit.patch
blackfin-arch-fix-bug-prevent-warning-in-case-bf531-is-target.patch
blackfin-arch-fix-stamp537-isp1716-irq-setting-bug.patch
blackfin-arch-fix-bug-interrupt-setup-problem-request_irq.patch
blackfin-arch-pnav-and-bluetechnix-cm-bf537-use-the-mac.patch
blackfin-arch-always-include-linux-kallsysms-header-file.patch
blackfin-arch-sync-with-uclibc-no-functional-changes.patch
blackfin-arch-using-asm-generic-pgtable-header-file-by.patch
blackfin-arch-add-missing-__clear_user-function-to.patch
blackfin-arch-use-boot_command_line-instead-of.patch
blackfin-arch-fix-some-coding-style-in-include.patch
blackfin-arch-add-scm_timestampns-and-siocgstampns-to.patch
blackfin-arch-define-a-new-cacheline_aligned-attribute-to-put-it-in-l1-data-memory-with-linkscript-update.patch
blackfin-arch-fix-bug-asserting-gpio-requested-doesnt-make-sense-with-gpio-whole-port-accesses.patch
blackfin-arch-04-and-05-silicon-doesnt-exist-for-bf534-bf536-adn-bf537-so-dont-let-people-select-the-option.patch
driver_bfin_serial_core.patch
driver_bfin_serial_core-update.patch
blackfin-on-chip-ethernet-mac-controller-driver.patch
blackfin-on-chip-ethernet-mac-controller-driver-update.patch
blackfin-patch-add-blackfin-support-in-smc91x.patch
blackfin-on-chip-rtc-controller-driver.patch
blackfin-on-chip-rtc-controller-driver-fix-rtc_update_irq-augument.patch
blackfin-blackfin-on-chip-spi-controller-driver.patch
blackfin-blackfin-on-chip-spi-controller-driver-cleanup-and-coding-style-fixing.patch
blackfin-blackfin-on-chip-spi-controller-driver-fix-reboot-kernel-mounting-spi-flash-print-error-bug.patch
move-die-notifier-handling-to-common-code-fix.patch
blackfin-blackfin-utrace-patch.patch
utrace-nommu-fixup-support-utrace.patch
revoke-core-code-revoke-no-revoke-for-nommu.patch
revoke-core-code-generic_file_revoke-stub-for-nommu.patch
vdso-print-fatal-signals-fix-compiling-error-bug-in.patch
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