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authorDenys Vlasenko <[email protected]>2016-04-25 16:17:52 +0200
committerKalle Valo <[email protected]>2016-05-03 13:05:14 +0300
commitaae555d3026abcf6b7e4d29be2252dcc9ba10f49 (patch)
tree0993ee18c22da10c571542b2ca621ef620e9d89d /tools/perf/scripts/python
parentede00a5ceb4d903a8c137a52bb77d574baaef8bd (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 <[email protected]> CC: Larry Finger <[email protected]> CC: Chaoming Li <[email protected]> CC: [email protected] CC: [email protected] Signed-off-by: Kalle Valo <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions