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(parent: 9401f4e) | patch
powerpc/perf: Use stack siar instead of mfspr
authorKajol Jain <kjain@linux.ibm.com>
Wed, 18 Aug 2021 17:15:54 +0000 (22:45 +0530)
committerMichael Ellerman <mpe@ellerman.id.au>
Wed, 25 Aug 2021 12:38:18 +0000 (22:38 +1000)
commitb1643084d164cea0c107a39bcdf0119fc52619af
tree365582b2d37a2d3f9a38a2cd0fafe5983f9f95f6tree | snapshot
parent9401f4e46cf6965e23738f70e149172344a01eefcommit | diff
powerpc/perf: Use stack siar instead of mfspr

Minor optimization in the 'perf_instruction_pointer' function code by
making use of stack siar instead of mfspr.

Fixes: 75382aa72f06 ("powerpc/perf: Move code to select SIAR or pt_regs into perf_read_regs")
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Tested-by: Nageswara R Sastry <rnsastry@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210818171556.36912-1-kjain@linux.ibm.com
arch/powerpc/perf/core-book3s.c diff | blob | history
Domain: System / Kernel;