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| author | Paul E. McKenney <[email protected]> | 2020-09-03 22:23:29 +0000 |
|---|---|---|
| committer | Paul E. McKenney <[email protected]> | 2020-11-07 00:59:11 +0000 |
| commit | 3fcd6a230fa7d03bffcb831a81b40435c146c12b (patch) | |
| tree | bc576b40954c9deb95bf32151cb4535fe889297f /scripts/gcc-plugins/structleak_plugin.c | |
| parent | x86/cpu: Avoid cpuinfo-induced IPI pileups (diff) | |
| download | kernel-3fcd6a230fa7d03bffcb831a81b40435c146c12b.tar.gz kernel-3fcd6a230fa7d03bffcb831a81b40435c146c12b.zip | |
x86/cpu: Avoid cpuinfo-induced IPIing of idle CPUs
Currently, accessing /proc/cpuinfo sends IPIs to idle CPUs in order to
learn their clock frequency. Which is a bit strange, given that waking
them from idle likely significantly changes their clock frequency.
This commit therefore avoids sending /proc/cpuinfo-induced IPIs to
idle CPUs.
[ paulmck: Also check for idle in arch_freq_prepare_all(). ]
Signed-off-by: Paul E. McKenney <[email protected]>
Cc: Rafael J. Wysocki <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: <[email protected]>
Diffstat (limited to 'scripts/gcc-plugins/structleak_plugin.c')
0 files changed, 0 insertions, 0 deletions