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authorPawan Gupta <pawan.kumar.gupta@linux.intel.com>2021-06-15 00:13:23 +0300
committerBorislav Petkov <bp@suse.de>2021-06-15 18:36:03 +0300
commitad3c2e174938d72fded674acead42e2464a3b460 (patch)
treea17c7dc78052a9b4395f10e4f5b1bb27325bdc6b /tools/perf/scripts/python/export-to-sqlite.py
parent1348924ba8169f35cedfd0a0087872b81a632b8e (diff)
downloadlinux-ad3c2e174938d72fded674acead42e2464a3b460.tar.xz
x86/events/intel: Do not deploy TSX force abort workaround when TSX is deprecated
Earlier workaround added by 400816f60c54 ("perf/x86/intel: Implement support for TSX Force Abort") for perf counter interactions [1] are not required on some client systems which received a microcode update that deprecates TSX. Bypass the perf workaround when such microcode is enumerated. [1] [ bp: Look for document ID 604224, "Performance Monitoring Impact of Intel Transactional Synchronization Extension Memory". Since there's no way for us to have stable links to documents... ] [ bp: Massage comment. ] Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Andi Kleen <ak@linux.intel.com> Reviewed-by: Tony Luck <tony.luck@intel.com> Tested-by: Neelima Krishnan <neelima.krishnan@intel.com> Link: https://lkml.kernel.org/r/e4d410f786946280ced02dd07c74e0a74f1d10cb.1623704845.git-series.pawan.kumar.gupta@linux.intel.com
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