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| author | Denys Vlasenko <dvlasenk@redhat.com> | 2016-04-25 16:17:52 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2016-05-03 13:05:14 +0300 |
| commit | aae555d3026abcf6b7e4d29be2252dcc9ba10f49 (patch) | |
| tree | 0993ee18c22da10c571542b2ca621ef620e9d89d /kernel/bpf/core.c | |
| parent | ede00a5ceb4d903a8c137a52bb77d574baaef8bd (diff) | |
rtlwifi: rtl818x: Deinline indexed IO functions, save 21568 bytes
rtl818x_ioread8_idx: 151 bytes, 29 calls
rtl818x_ioread16_idx: 151 bytes, 11 calls
rtl818x_ioread32_idx: 151 bytes, 5 calls
rtl818x_iowrite8_idx: 157 bytes, 117 calls
rtl818x_iowrite16_idx: 158 bytes, 74 calls
rtl818x_iowrite32_idx: 157 bytes, 22 calls
Each of these functions has a pair of mutex lock/unlock ops,
both of these ops perform atomic updates of memory (on x86, it boils down to
"lock cmpxchg %reg,mem" insn), which are 4-8 times more expensive than call+return.
text data bss dec hex filename
95894242 20860288 35991552 152746082 91ab862 vmlinux_before
95872674 20860320 35991552 152724546 91a6442 vmlinux
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Larry Finger <Larry.Finger@lwfinger.net>
CC: Chaoming Li <chaoming_li@realsil.com.cn>
CC: linux-wireless@vger.kernel.org
CC: linux-kernel@vger.kernel.org
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'kernel/bpf/core.c')
0 files changed, 0 insertions, 0 deletions