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x86: Put hot per CPU variables into a struct
authorThomas Gleixner <[email protected]>
Thu, 15 Sep 2022 11:11:01 +0000 (13:11 +0200)
committerPeter Zijlstra <[email protected]>
Mon, 17 Oct 2022 14:41:03 +0000 (16:41 +0200)
commite57ef2ed97c1d078973298658a8096644a1e9e09
tree79cb9a8835ab832a8e8c302abf1ffe0c0ad96c5ftree | snapshot
parentfdc9ee7e97aa2c1dfa7ebb092fffec40ffa59108commit | diff
x86: Put hot per CPU variables into a struct

The layout of per-cpu variables is at the mercy of the compiler. This
can lead to random performance fluctuations from build to build.

Create a structure to hold some of the hottest per-cpu variables,
starting with current_task.

Signed-off-by: Thomas Gleixner <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
arch/x86/include/asm/current.h diff | blob | blame | history
arch/x86/kernel/cpu/common.c diff | blob | blame | history
arch/x86/kernel/process_32.c diff | blob | blame | history
arch/x86/kernel/process_64.c diff | blob | blame | history
arch/x86/kernel/smpboot.c diff | blob | blame | history
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