diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2022-09-15 13:11:04 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-10-17 16:41:05 +0200 |
| commit | c063a217bc0726c2560138229de5673dbb253a02 (patch) | |
| tree | 2cd279066be02c20600ed0aa0d9a1e7e496ecb33 /arch/x86/kernel/process_32.c | |
| parent | 7443b296e699e6922f5be243c8d2e316de8cacbe (diff) | |
x86/percpu: Move current_top_of_stack next to current_task
Extend the struct pcpu_hot cacheline with current_top_of_stack;
another very frequently used value.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220915111145.493038635@infradead.org
Diffstat (limited to 'arch/x86/kernel/process_32.c')
| -rw-r--r-- | arch/x86/kernel/process_32.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c index 807da45d84c7..470c128759ea 100644 --- a/arch/x86/kernel/process_32.c +++ b/arch/x86/kernel/process_32.c @@ -191,13 +191,13 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) arch_end_context_switch(next_p); /* - * Reload esp0 and cpu_current_top_of_stack. This changes + * Reload esp0 and pcpu_hot.top_of_stack. This changes * current_thread_info(). Refresh the SYSENTER configuration in * case prev or next is vm86. */ update_task_stack(next_p); refresh_sysenter_cs(next); - this_cpu_write(cpu_current_top_of_stack, + this_cpu_write(pcpu_hot.top_of_stack, (unsigned long)task_stack_page(next_p) + THREAD_SIZE); |