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| author | Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> | 2020-04-21 20:35:44 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-06-02 13:59:15 +0300 |
| commit | 1f2aaed2db03150428dbcd2ddee02ae6cb4bac52 (patch) | |
| tree | 1d71fad74ebfd725281796b2ec2904a6897f25ba /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | 03b51416e876aea5e7638947e50831b6c988c246 (diff) | |
| download | linux-1f2aaed2db03150428dbcd2ddee02ae6cb4bac52.tar.xz | |
powerpc/module_64: Simplify check for -mprofile-kernel ftrace relocations
For -mprofile-kernel, we need special handling when generating stubs for
ftrace calls such as _mcount(). To faciliate this, we check if a
R_PPC64_REL24 relocation is for a symbol named "_mcount()" along with
also checking the instruction sequence. The latter is not really
required since "_mcount()" is an exported symbol and kernel modules
cannot use it. As such, drop the additional checking and simplify the
code. This helps unify stub creation for ftrace stubs with
-mprofile-kernel and aids in code reuse.
Also rename is_mprofile_mcount_callsite() to is_mprofile_ftrace_call()
to reflect the checking being done.
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/7d9c316adfa1fb787ad268bb4691e7e4059ff2d5.1587488954.git.naveen.n.rao@linux.vnet.ibm.com
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
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