Add -lintl to Allow the Info to Compile for cpupower #270

niaow · 2016-03-28T20:20:16Z

Without this it cannot find GNU gettext. Compilation without this errors with: "undefined reference to 'libintl_gettext'"

lkl: avoid using libc function (i.e., free(3)) for non-libc environment

split __bpf_prog_run() interpreter into stack allocation and execution parts. The code section shrinks which helps interpreter performance in some cases. text data bss dec hex filename 26350 10328 624 37302 91b6 kernel/bpf/core.o.before 25777 10328 624 36729 8f79 kernel/bpf/core.o.after Very short programs got slower (due to extra function call): Before: test_bpf: torvalds#89 ALU64_ADD_K: 1 + 2 = 3 jited:0 7 PASS test_bpf: torvalds#90 ALU64_ADD_K: 3 + 0 = 3 jited:0 8 PASS test_bpf: torvalds#91 ALU64_ADD_K: 1 + 2147483646 = 2147483647 jited:0 7 PASS test_bpf: torvalds#92 ALU64_ADD_K: 4294967294 + 2 = 4294967296 jited:0 11 PASS test_bpf: torvalds#93 ALU64_ADD_K: 2147483646 + -2147483647 = -1 jited:0 7 PASS After: test_bpf: torvalds#89 ALU64_ADD_K: 1 + 2 = 3 jited:0 11 PASS test_bpf: torvalds#90 ALU64_ADD_K: 3 + 0 = 3 jited:0 11 PASS test_bpf: torvalds#91 ALU64_ADD_K: 1 + 2147483646 = 2147483647 jited:0 11 PASS test_bpf: torvalds#92 ALU64_ADD_K: 4294967294 + 2 = 4294967296 jited:0 14 PASS test_bpf: torvalds#93 ALU64_ADD_K: 2147483646 + -2147483647 = -1 jited:0 10 PASS Longer programs got faster: Before: test_bpf: torvalds#266 BPF_MAXINSNS: Ctx heavy transformations jited:0 20286 20513 PASS test_bpf: torvalds#267 BPF_MAXINSNS: Call heavy transformations jited:0 31853 31768 PASS test_bpf: torvalds#268 BPF_MAXINSNS: Jump heavy test jited:0 9815 PASS test_bpf: torvalds#269 BPF_MAXINSNS: Very long jump backwards jited:0 6 PASS test_bpf: torvalds#270 BPF_MAXINSNS: Edge hopping nuthouse jited:0 13959 PASS test_bpf: torvalds#271 BPF_MAXINSNS: Jump, gap, jump, ... jited:0 210 PASS test_bpf: torvalds#272 BPF_MAXINSNS: ld_abs+get_processor_id jited:0 21724 PASS test_bpf: torvalds#273 BPF_MAXINSNS: ld_abs+vlan_push/pop jited:0 19118 PASS After: test_bpf: torvalds#266 BPF_MAXINSNS: Ctx heavy transformations jited:0 19008 18827 PASS test_bpf: torvalds#267 BPF_MAXINSNS: Call heavy transformations jited:0 29238 28450 PASS test_bpf: torvalds#268 BPF_MAXINSNS: Jump heavy test jited:0 9485 PASS test_bpf: torvalds#269 BPF_MAXINSNS: Very long jump backwards jited:0 12 PASS test_bpf: torvalds#270 BPF_MAXINSNS: Edge hopping nuthouse jited:0 13257 PASS test_bpf: torvalds#271 BPF_MAXINSNS: Jump, gap, jump, ... jited:0 213 PASS test_bpf: torvalds#272 BPF_MAXINSNS: ld_abs+get_processor_id jited:0 19389 PASS test_bpf: torvalds#273 BPF_MAXINSNS: ld_abs+vlan_push/pop jited:0 19583 PASS For real world production programs the difference is noise. This patch is first step towards reducing interpreter stack consumption. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>

Add a new test case which performs double query of the bpf_mprog through libbpf API, but also via raw bpf(2) syscall. This is testing to gather first the count and then in a subsequent probe the full information with the program array without clearing passed structs in between. # ./vmtest.sh -- ./test_progs -t tc_opts [...] ./test_progs -t tc_opts [ 1.398818] tsc: Refined TSC clocksource calibration: 3407.999 MHz [ 1.400263] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fd336761, max_idle_ns: 440795243819 ns [ 1.402734] clocksource: Switched to clocksource tsc [ 1.426639] bpf_testmod: loading out-of-tree module taints kernel. [ 1.428112] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel torvalds#252 tc_opts_after:OK torvalds#253 tc_opts_append:OK torvalds#254 tc_opts_basic:OK torvalds#255 tc_opts_before:OK torvalds#256 tc_opts_chain_classic:OK torvalds#257 tc_opts_chain_mixed:OK torvalds#258 tc_opts_delete_empty:OK torvalds#259 tc_opts_demixed:OK torvalds#260 tc_opts_detach:OK torvalds#261 tc_opts_detach_after:OK torvalds#262 tc_opts_detach_before:OK torvalds#263 tc_opts_dev_cleanup:OK torvalds#264 tc_opts_invalid:OK torvalds#265 tc_opts_max:OK torvalds#266 tc_opts_mixed:OK torvalds#267 tc_opts_prepend:OK torvalds#268 tc_opts_query:OK <--- (new test) torvalds#269 tc_opts_replace:OK torvalds#270 tc_opts_revision:OK Summary: 19/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

./test_progs -t tc_opts [ 1.406778] tsc: Refined TSC clocksource calibration: 3407.990 MHz [ 1.408863] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fcaf6eb0, max_idle_ns: 440795321766 ns [ 1.412419] clocksource: Switched to clocksource tsc [ 1.428671] bpf_testmod: loading out-of-tree module taints kernel. [ 1.430260] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel torvalds#252 tc_opts_after:OK torvalds#253 tc_opts_append:OK torvalds#254 tc_opts_basic:OK torvalds#255 tc_opts_before:OK torvalds#256 tc_opts_chain_classic:OK torvalds#257 tc_opts_chain_mixed:OK torvalds#258 tc_opts_delete_empty:OK torvalds#259 tc_opts_demixed:OK torvalds#260 tc_opts_detach:OK torvalds#261 tc_opts_detach_after:OK torvalds#262 tc_opts_detach_before:OK torvalds#263 tc_opts_dev_cleanup:OK torvalds#264 tc_opts_invalid:OK torvalds#265 tc_opts_max:OK torvalds#266 tc_opts_mixed:OK torvalds#267 tc_opts_prepend:OK torvalds#268 tc_opts_query:OK torvalds#269 tc_opts_query_attach:OK <--- (new test) torvalds#270 tc_opts_replace:OK torvalds#271 tc_opts_revision:OK Summary: 20/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Add a new test case to query on an empty bpf_mprog and pass the revision directly into exprected_revision for attachment to assert that this does succeed. ./test_progs -t tc_opts [ 1.406778] tsc: Refined TSC clocksource calibration: 3407.990 MHz [ 1.408863] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fcaf6eb0, max_idle_ns: 440795321766 ns [ 1.412419] clocksource: Switched to clocksource tsc [ 1.428671] bpf_testmod: loading out-of-tree module taints kernel. [ 1.430260] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel torvalds#252 tc_opts_after:OK torvalds#253 tc_opts_append:OK torvalds#254 tc_opts_basic:OK torvalds#255 tc_opts_before:OK torvalds#256 tc_opts_chain_classic:OK torvalds#257 tc_opts_chain_mixed:OK torvalds#258 tc_opts_delete_empty:OK torvalds#259 tc_opts_demixed:OK torvalds#260 tc_opts_detach:OK torvalds#261 tc_opts_detach_after:OK torvalds#262 tc_opts_detach_before:OK torvalds#263 tc_opts_dev_cleanup:OK torvalds#264 tc_opts_invalid:OK torvalds#265 tc_opts_max:OK torvalds#266 tc_opts_mixed:OK torvalds#267 tc_opts_prepend:OK torvalds#268 tc_opts_query:OK torvalds#269 tc_opts_query_attach:OK <--- (new test) torvalds#270 tc_opts_replace:OK torvalds#271 tc_opts_revision:OK Summary: 20/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Add a new test case which performs double query of the bpf_mprog through libbpf API, but also via raw bpf(2) syscall. This is testing to gather first the count and then in a subsequent probe the full information with the program array without clearing passed structs in between. # ./vmtest.sh -- ./test_progs -t tc_opts [...] ./test_progs -t tc_opts [ 1.398818] tsc: Refined TSC clocksource calibration: 3407.999 MHz [ 1.400263] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fd336761, max_idle_ns: 440795243819 ns [ 1.402734] clocksource: Switched to clocksource tsc [ 1.426639] bpf_testmod: loading out-of-tree module taints kernel. [ 1.428112] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel torvalds#252 tc_opts_after:OK torvalds#253 tc_opts_append:OK torvalds#254 tc_opts_basic:OK torvalds#255 tc_opts_before:OK torvalds#256 tc_opts_chain_classic:OK torvalds#257 tc_opts_chain_mixed:OK torvalds#258 tc_opts_delete_empty:OK torvalds#259 tc_opts_demixed:OK torvalds#260 tc_opts_detach:OK torvalds#261 tc_opts_detach_after:OK torvalds#262 tc_opts_detach_before:OK torvalds#263 tc_opts_dev_cleanup:OK torvalds#264 tc_opts_invalid:OK torvalds#265 tc_opts_max:OK torvalds#266 tc_opts_mixed:OK torvalds#267 tc_opts_prepend:OK torvalds#268 tc_opts_query:OK <--- (new test) torvalds#269 tc_opts_replace:OK torvalds#270 tc_opts_revision:OK Summary: 19/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Add a new test case to query on an empty bpf_mprog and pass the revision directly into exprected_revision for attachment to assert that this does succeed. ./test_progs -t tc_opts [ 1.406778] tsc: Refined TSC clocksource calibration: 3407.990 MHz [ 1.408863] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fcaf6eb0, max_idle_ns: 440795321766 ns [ 1.412419] clocksource: Switched to clocksource tsc [ 1.428671] bpf_testmod: loading out-of-tree module taints kernel. [ 1.430260] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel torvalds#252 tc_opts_after:OK torvalds#253 tc_opts_append:OK torvalds#254 tc_opts_basic:OK torvalds#255 tc_opts_before:OK torvalds#256 tc_opts_chain_classic:OK torvalds#257 tc_opts_chain_mixed:OK torvalds#258 tc_opts_delete_empty:OK torvalds#259 tc_opts_demixed:OK torvalds#260 tc_opts_detach:OK torvalds#261 tc_opts_detach_after:OK torvalds#262 tc_opts_detach_before:OK torvalds#263 tc_opts_dev_cleanup:OK torvalds#264 tc_opts_invalid:OK torvalds#265 tc_opts_max:OK torvalds#266 tc_opts_mixed:OK torvalds#267 tc_opts_prepend:OK torvalds#268 tc_opts_query:OK torvalds#269 tc_opts_query_attach:OK <--- (new test) torvalds#270 tc_opts_replace:OK torvalds#271 tc_opts_revision:OK Summary: 20/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Add a new test case which performs double query of the bpf_mprog through libbpf API, but also via raw bpf(2) syscall. This is testing to gather first the count and then in a subsequent probe the full information with the program array without clearing passed structs in between. # ./vmtest.sh -- ./test_progs -t tc_opts [...] ./test_progs -t tc_opts [ 1.398818] tsc: Refined TSC clocksource calibration: 3407.999 MHz [ 1.400263] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fd336761, max_idle_ns: 440795243819 ns [ 1.402734] clocksource: Switched to clocksource tsc [ 1.426639] bpf_testmod: loading out-of-tree module taints kernel. [ 1.428112] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel torvalds#252 tc_opts_after:OK torvalds#253 tc_opts_append:OK torvalds#254 tc_opts_basic:OK torvalds#255 tc_opts_before:OK torvalds#256 tc_opts_chain_classic:OK torvalds#257 tc_opts_chain_mixed:OK torvalds#258 tc_opts_delete_empty:OK torvalds#259 tc_opts_demixed:OK torvalds#260 tc_opts_detach:OK torvalds#261 tc_opts_detach_after:OK torvalds#262 tc_opts_detach_before:OK torvalds#263 tc_opts_dev_cleanup:OK torvalds#264 tc_opts_invalid:OK torvalds#265 tc_opts_max:OK torvalds#266 tc_opts_mixed:OK torvalds#267 tc_opts_prepend:OK torvalds#268 tc_opts_query:OK <--- (new test) torvalds#269 tc_opts_replace:OK torvalds#270 tc_opts_revision:OK Summary: 19/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Add a new test case to query on an empty bpf_mprog and pass the revision directly into expected_revision for attachment to assert that this does succeed. ./test_progs -t tc_opts [ 1.406778] tsc: Refined TSC clocksource calibration: 3407.990 MHz [ 1.408863] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fcaf6eb0, max_idle_ns: 440795321766 ns [ 1.412419] clocksource: Switched to clocksource tsc [ 1.428671] bpf_testmod: loading out-of-tree module taints kernel. [ 1.430260] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel torvalds#252 tc_opts_after:OK torvalds#253 tc_opts_append:OK torvalds#254 tc_opts_basic:OK torvalds#255 tc_opts_before:OK torvalds#256 tc_opts_chain_classic:OK torvalds#257 tc_opts_chain_mixed:OK torvalds#258 tc_opts_delete_empty:OK torvalds#259 tc_opts_demixed:OK torvalds#260 tc_opts_detach:OK torvalds#261 tc_opts_detach_after:OK torvalds#262 tc_opts_detach_before:OK torvalds#263 tc_opts_dev_cleanup:OK torvalds#264 tc_opts_invalid:OK torvalds#265 tc_opts_max:OK torvalds#266 tc_opts_mixed:OK torvalds#267 tc_opts_prepend:OK torvalds#268 tc_opts_query:OK torvalds#269 tc_opts_query_attach:OK <--- (new test) torvalds#270 tc_opts_replace:OK torvalds#271 tc_opts_revision:OK Summary: 20/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>