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powerpc64/bpf: Do not save/restore LR on each call to bpf_stf_barrier()
authorNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Mon, 14 Feb 2022 10:41:38 +0000 (16:11 +0530)
committerMichael Ellerman <mpe@ellerman.id.au>
Mon, 7 Mar 2022 13:04:57 +0000 (00:04 +1100)
commitc2067f7f88830cdd020c775ffefe84a8177337af
tree4c51ee0e6926dc52948e89349b6e544b550695a3tree | snapshot
parent0ffdbce6f4a89bb7c0002904d6438ec83cf05ce7commit | diff
powerpc64/bpf: Do not save/restore LR on each call to bpf_stf_barrier()

Instead of saving and restoring LR before each invocation to
bpf_stf_barrier(), set SEEN_FUNC flag so that we save/restore LR in
prologue/epilogue.

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/4446f25478d82a2a4ac9dab2ebdfd88ddf923eb7.1644834730.git.naveen.n.rao@linux.vnet.ibm.com
arch/powerpc/net/bpf_jit_comp64.c diff | blob | history
Domain: System / Kernel;