The patch titled
random: remove cacheline alignment for locks
has been added to the -mm tree. Its filename is
random-remove-cacheline-alignment-for-locks.patch
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The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: random: remove cacheline alignment for locks
From: Matt Mackall <mpm@xxxxxxxxxxx>
Earlier changes greatly reduce the number of times we grab the lock
per output byte, so we shouldn't need this particular hack any more.
Signed-off-by: Matt Mackall <mpm@xxxxxxxxxxx>
Cc: Theodore Ts'o <tytso@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/char/random.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN drivers/char/random.c~random-remove-cacheline-alignment-for-locks drivers/char/random.c
--- a/drivers/char/random.c~random-remove-cacheline-alignment-for-locks
+++ a/drivers/char/random.c
@@ -395,7 +395,7 @@ module_param(debug, bool, 0644);
struct entropy_store;
struct entropy_store {
- /* mostly-read data: */
+ /* read-only data: */
struct poolinfo *poolinfo;
__u32 *pool;
const char *name;
@@ -403,7 +403,7 @@ struct entropy_store {
struct entropy_store *pull;
/* read-write data: */
- spinlock_t lock ____cacheline_aligned_in_smp;
+ spinlock_t lock;
unsigned add_ptr;
int entropy_count;
int input_rotate;
_
Patches currently in -mm which might be from mpm@xxxxxxxxxxx are
git-x86.patch
maps4-add-proportional-set-size-accounting-in-smaps.patch
maps4-rework-task_size-macros.patch
maps4-rework-task_size-macros-mips-fix.patch
maps4-move-is_swap_pte.patch
maps4-introduce-a-generic-page-walker.patch
maps4-use-pagewalker-in-clear_refs-and-smaps.patch
maps4-simplify-interdependence-of-maps-and-smaps.patch
maps4-move-clear_refs-code-to-task_mmuc.patch
maps4-regroup-task_mmu-by-interface.patch
maps4-add-proc-pid-pagemap-interface.patch
maps4-add-proc-pid-pagemap-interface-fix.patch
maps4-add-proc-kpagecount-interface.patch
maps4-add-proc-kpagecount-interface-fix.patch
maps4-add-proc-kpageflags-interface.patch
maps4-add-proc-kpageflags-interface-fix.patch
maps4-add-proc-kpageflags-interface-fix-2.patch
maps4-add-proc-kpageflags-interface-fix-2-fix.patch
maps4-make-page-monitoring-proc-file-optional.patch
maps4-make-page-monitoring-proc-file-optional-fix.patch
remove-unused-code-from-mm-tiny-shmemc.patch
drivers-char-randomcwrite_pool-cond_resched-needed.patch
random-clean-up-checkpatch-complaints.patch
random-consolidate-wakeup-logic.patch
random-use-unlocked_ioctl.patch
random-reuse-rand_initialize.patch
random-improve-variable-naming-clear-extract-buffer.patch
random-make-backtracking-attacks-harder.patch
random-remove-cacheline-alignment-for-locks.patch
random-eliminate-redundant-new_rotate-variable.patch
random-remove-some-prefetch-logic.patch
random-simplify-add_ptr-logic.patch
random-make-mixing-interface-byte-oriented.patch
random-simplify-and-rename-credit_entropy_store.patch
-
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