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(parent: cb3ac45) | patch
powerpc/code-patching: Use jump_label for testing freed initmem
authorChristophe Leroy <christophe.leroy@csgroup.eu>
Tue, 22 Mar 2022 15:40:20 +0000 (16:40 +0100)
committerMichael Ellerman <mpe@ellerman.id.au>
Wed, 11 May 2022 13:06:39 +0000 (23:06 +1000)
commitb033767848c4115e486b1a51946de3bee2ac0fa6
tree92673a5723ab58269ac2e7d458fa8f4e45643796tree | snapshot
parentcb3ac45214c03852430979a43180371a44b74596commit | diff
powerpc/code-patching: Use jump_label for testing freed initmem

Once init is done, initmem is freed forever so no need to
test system_state at every call to patch_instruction().

Use jump_label.

This reduces by 2% the time needed to activate ftrace on an 8xx.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/0aee964721cab7316cffde21a2ca223cee14d373.1647962456.git.christophe.leroy@csgroup.eu
arch/powerpc/include/asm/code-patching.h diff | blob | history
arch/powerpc/lib/code-patching.c diff | blob | history
arch/powerpc/mm/mem.c diff | blob | history
Domain: System / Kernel;