diff options
| author | Joel Granados <j.granados@samsung.com> | 2023-10-02 13:30:37 +0200 |
|---|---|---|
| committer | Luis Chamberlain <mcgrof@kernel.org> | 2023-10-10 15:22:02 -0700 |
| commit | de8a660b03a35c76b91a03421057833d29973877 (patch) | |
| tree | 27d3aeca0a4ae5e4fe04b5fcc83cc91f4f0800fb /arch/arm64/kernel | |
| parent | fdd9da76e2dec07de294f040bec3787f296c7c5d (diff) | |
arm: Remove now superfluous sentinel elem from ctl_table arrays
This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
https://lore.kernel.org/all/ZO5Yx5JFogGi%2FcBo@bombadil.infradead.org/)
Removed the sentinel as well as the explicit size from ctl_isa_vars. The
size is redundant as the initialization sets it. Changed
insn_emulation->sysctl from a 2 element array of struct ctl_table to a
simple struct. This has no consequence for the sysctl registration as it
is forwarded as a pointer. Removed sentinel from sve_defatul_vl_table,
sme_default_vl_table, tagged_addr_sysctl_table and
armv8_pmu_sysctl_table.
This removal is safe because register_sysctl_sz and register_sysctl use
the array size in addition to checking for the sentinel.
Signed-off-by: Joel Granados <j.granados@samsung.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Diffstat (limited to 'arch/arm64/kernel')
| -rw-r--r-- | arch/arm64/kernel/armv8_deprecated.c | 8 | ||||
| -rw-r--r-- | arch/arm64/kernel/fpsimd.c | 2 | ||||
| -rw-r--r-- | arch/arm64/kernel/process.c | 1 |
3 files changed, 3 insertions, 8 deletions
diff --git a/arch/arm64/kernel/armv8_deprecated.c b/arch/arm64/kernel/armv8_deprecated.c index e459cfd33711..dd6ce86d4332 100644 --- a/arch/arm64/kernel/armv8_deprecated.c +++ b/arch/arm64/kernel/armv8_deprecated.c @@ -52,10 +52,8 @@ struct insn_emulation { int min; int max; - /* - * sysctl for this emulation + a sentinal entry. - */ - struct ctl_table sysctl[2]; + /* sysctl for this emulation */ + struct ctl_table sysctl; }; #define ARM_OPCODE_CONDTEST_FAIL 0 @@ -558,7 +556,7 @@ static void __init register_insn_emulation(struct insn_emulation *insn) update_insn_emulation_mode(insn, INSN_UNDEF); if (insn->status != INSN_UNAVAILABLE) { - sysctl = &insn->sysctl[0]; + sysctl = &insn->sysctl; sysctl->mode = 0644; sysctl->maxlen = sizeof(int); diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c index 91e44ac7150f..9afd0eb0cf88 100644 --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -589,7 +589,6 @@ static struct ctl_table sve_default_vl_table[] = { .proc_handler = vec_proc_do_default_vl, .extra1 = &vl_info[ARM64_VEC_SVE], }, - { } }; static int __init sve_sysctl_init(void) @@ -613,7 +612,6 @@ static struct ctl_table sme_default_vl_table[] = { .proc_handler = vec_proc_do_default_vl, .extra1 = &vl_info[ARM64_VEC_SME], }, - { } }; static int __init sme_sysctl_init(void) diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c index 0fcc4eb1a7ab..610e13c3d41b 100644 --- a/arch/arm64/kernel/process.c +++ b/arch/arm64/kernel/process.c @@ -724,7 +724,6 @@ static struct ctl_table tagged_addr_sysctl_table[] = { .extra1 = SYSCTL_ZERO, .extra2 = SYSCTL_ONE, }, - { } }; static int __init tagged_addr_init(void) |