diff options
| author | torvald <torvald@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-02-20 20:57:37 +0000 |
|---|---|---|
| committer | torvald <torvald@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-02-20 20:57:37 +0000 |
| commit | 3d2156136d019741015b677b8ad68dafd013143c (patch) | |
| tree | 87a8776bc7c37b9d5e9d359ce9f31a2baa2d94d0 /libitm | |
| parent | 625ff7f1b91264c832b07100f8a48791255d9f1d (diff) | |
| download | gcc-3d2156136d019741015b677b8ad68dafd013143c.tar.gz | |
libitm: Put gl_wt global lock on separate cache line.
libitm/
* method-gl.cc (gl_wt_dispatch::orec): Put on separate cacheline.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@184403 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libitm')
| -rw-r--r-- | libitm/ChangeLog | 4 | ||||
| -rw-r--r-- | libitm/method-gl.cc | 4 |
2 files changed, 6 insertions, 2 deletions
diff --git a/libitm/ChangeLog b/libitm/ChangeLog index da94906bcd3..2676cbef4b0 100644 --- a/libitm/ChangeLog +++ b/libitm/ChangeLog @@ -1,5 +1,9 @@ 2012-02-20 Torvald Riegel <triegel@redhat.com> + * method-gl.cc (gl_wt_dispatch::orec): Put on separate cacheline. + +2012-02-20 Torvald Riegel <triegel@redhat.com> + * method-gl.cc (gl_wt_dispatch::rollback): Optimize memory orders. 2012-02-20 Torvald Riegel <triegel@redhat.com> diff --git a/libitm/method-gl.cc b/libitm/method-gl.cc index 4fd506ef154..4b6769ba2c0 100644 --- a/libitm/method-gl.cc +++ b/libitm/method-gl.cc @@ -41,7 +41,8 @@ struct gl_mg : public method_group static gtm_word clear_locked(gtm_word l) { return l & ~LOCK_BIT; } // The global ownership record. - atomic<gtm_word> orec; + // No tail-padding necessary (the virtual functions aren't used frequently). + atomic<gtm_word> orec __attribute__((aligned(HW_CACHELINE_SIZE))); virtual void init() { @@ -52,7 +53,6 @@ struct gl_mg : public method_group virtual void fini() { } }; -// TODO cacheline padding static gl_mg o_gl_mg; |