iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

perf/x86/intel/lbr: Use setup_clear_cpu_cap() instead of clear_cpu_cap()

Browse Source 
[ Upstream commit b329f5ddc9ce4b622d9c7aaf5c6df4de52caf91a ]

clear_cpu_cap(&boot_cpu_data) is very similar to setup_clear_cpu_cap()
except that the latter also sets a bit in 'cpu_caps_cleared' which
later clears the same cap in secondary cpus, which is likely what is
meant here.

Fixes: 47125db27e47 ("perf/x86/intel/lbr: Support Architectural LBR")
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Link: https://lkml.kernel.org/r/20220718141123.136106-2-mlevitsk@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Maxim Levitsky 2022-07-18 17:11:19 +03:00 committed by Greg Kroah-Hartman
parent 4fdf6f978c
commit c638b520ba
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/events/intel/lbr.c
View File

@ -1847,7 +1847,7 @@ void __init intel_pmu_arch_lbr_init(void)
return;
clear_arch_lbr:
clear_cpu_cap(&boot_cpu_data, X86_FEATURE_ARCH_LBR);
setup_clear_cpu_cap(X86_FEATURE_ARCH_LBR);
}
/**