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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2020-11-25 07:10:49 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-12-04 01:01:31 +1100 |
| commit | 03d701c2d9b0091cf8e96cb49ab7d2a6a9f19937 (patch) | |
| tree | fb25935d3fff153e31c5c3334badfadec8b72408 /tools/perf/scripts/python/bin/flamegraph-record | |
| parent | powerpc/32s: Fix an FTR_SECTION_ELSE (diff) | |
| download | linux-03d701c2d9b0091cf8e96cb49ab7d2a6a9f19937.tar.gz linux-03d701c2d9b0091cf8e96cb49ab7d2a6a9f19937.zip | |
powerpc/32s: Don't use SPRN_SPRG_PGDIR in hash_page
SPRN_SPRG_PGDIR is there mainly to speedup SW TLB miss handlers
for powerpc 603.
We need to free SPRN_SPRG2 to reduce the mess with CONFIG_VMAP_STACK.
In hash_page(), reading PGDIR from thread_struct will be in the noise
performance wise.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/4adca19b7120cdf619956768ed09e74fc6a558f3.1606285014.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'tools/perf/scripts/python/bin/flamegraph-record')
0 files changed, 0 insertions, 0 deletions