linux_dsm_epyc7002/arch/x86/kernel/fpu
Ingo Molnar 9ba6b79102 x86/fpu: Optimize fpu__activate_fpstate_read()
fpu__activate_fpstate_read() is used before FPU registers are
read from the fpstate by ptrace and core dumping.

It's not necessary to unlazy non-current child tasks in this case,
since the reading of registers is non-destructive.

Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Bobby Powers <bobbypowers@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-05-27 14:11:25 +02:00
..
bugs.c
core.c x86/fpu: Optimize fpu__activate_fpstate_read() 2015-05-27 14:11:25 +02:00
init.c
Makefile
regset.c x86/fpu: Split out the fpu__activate_fpstate_read() method 2015-05-27 14:11:24 +02:00
signal.c
xstate.c x86/fpu: Fix fpu__init_system_xstate() comments 2015-05-25 12:49:34 +02:00