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| author | David Mosberger-Tang <davidm@hpl.hp.com> | 2005-04-27 21:17:03 -0700 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2005-04-27 21:17:03 -0700 |
| commit | 060561ff79b01eea58e6d72abfb8e7580ff21f2a (patch) | |
| tree | 7c3f95456480d3c6b44842df5a7619be98f2e14d /fs/dquot.c | |
| parent | 96e017495e6833adcbad84783e3c5eb685836bbf (diff) | |
| download | kernel_samsung_smdk4412-060561ff79b01eea58e6d72abfb8e7580ff21f2a.zip kernel_samsung_smdk4412-060561ff79b01eea58e6d72abfb8e7580ff21f2a.tar.gz kernel_samsung_smdk4412-060561ff79b01eea58e6d72abfb8e7580ff21f2a.tar.bz2 | |
[IA64] In syscall-entry, use st8 instead of stf8 to clear pt_regs.r8
Using stf8 seemed like a clever idea at the time, but stf8 forces
the cache-line to be invalidated in the L1D (if it happens to be
there already). This patch eliminates a guaranteed L1D cache-miss
and, by itself, is good for a 1-2 cycle improvement for heavy-weight
syscalls.
Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'fs/dquot.c')
0 files changed, 0 insertions, 0 deletions