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| author | Torvald Riegel <triegel@redhat.com> | 2012-02-20 20:57:37 +0000 |
|---|---|---|
| committer | Torvald Riegel <torvald@gcc.gnu.org> | 2012-02-20 20:57:37 +0000 |
| commit | 63b08143d6c6f74ce8ed3f5a83adc070cddc8e6b (patch) | |
| tree | 87a8776bc7c37b9d5e9d359ce9f31a2baa2d94d0 /libitm | |
| parent | 4c9bd6acb08cddb66a54e37cf5edb3c1d0348151 (diff) | |
| download | gcc-63b08143d6c6f74ce8ed3f5a83adc070cddc8e6b.zip gcc-63b08143d6c6f74ce8ed3f5a83adc070cddc8e6b.tar.gz gcc-63b08143d6c6f74ce8ed3f5a83adc070cddc8e6b.tar.bz2 | |
libitm: Put gl_wt global lock on separate cache line.
libitm/
* method-gl.cc (gl_wt_dispatch::orec): Put on separate cacheline.
From-SVN: r184403
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 da94906..2676cbe 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 4fd506e..4b6769b 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; |