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| author | Will Deacon <will.deacon@arm.com> | 2018-02-09 16:19:47 +0300 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-03-06 21:52:32 +0300 |
| commit | 6b24442d68e78c57c8837920ea5dfb252571847a (patch) | |
| tree | 180962e1b03868090b1232772c3357303d99d240 /tools/perf/scripts/python/call-graph-from-sql.py | |
| parent | 4e829b6735475313016787ec3d256e102167b94d (diff) | |
| download | linux-6b24442d68e78c57c8837920ea5dfb252571847a.tar.xz | |
arm64: lse: Pass -fomit-frame-pointer to out-of-line ll/sc atomics
In cases where x30 is used as a temporary in the out-of-line ll/sc atomics
(e.g. atomic_fetch_add), the compiler tends to put out a full stackframe,
which included pointing the x29 at the new frame.
Since these things aren't traceable anyway, we can pass -fomit-frame-pointer
to reduce the work when spilling. Since this is incompatible with -pg, we
also remove that from the CFLAGS for this file.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-sql.py')
0 files changed, 0 insertions, 0 deletions