| commit | 70929a57cfea8c18de13fcea9ae6771018a98949 | |
| author | David Mosberger-Tang <davidm@hpl.hp.com> | |
| Thu, 28 Apr 2005 04:19:37 +0000 (27 21:19 -0700) | ||
| committer | Tony Luck <tony.luck@intel.com> | |
| Thu, 28 Apr 2005 04:19:37 +0000 (27 21:19 -0700) | ||
| tree | 1371e183617f368b7a92b185a2dee829c70d0efd | treesnapshot (tar.gz zip) |
| parent | f8fa5448fc9b4a7806b1297a0b57808f12fe4d43 | commitdiff |
[IA64] Reschedule __kernel_syscall_via_epc().
Avoid some stalls, which is good for about 2 cycles when invoking a
light-weight handler. When invoking a heavy-weight handler, this
helps by about 7 cycles, with most of the improvement coming from the
improved branch-prediction achieved by splitting the BBB bundle into
two MIB bundles.
Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Avoid some stalls, which is good for about 2 cycles when invoking a
light-weight handler. When invoking a heavy-weight handler, this
helps by about 7 cycles, with most of the improvement coming from the
improved branch-prediction achieved by splitting the BBB bundle into
two MIB bundles.
Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
| arch/ia64/kernel/gate.S | diffblobblamehistory |