#include /* validate @native and @pcp counter values match @expected */ #define CHECK(native, pcp, expected) \ do { \ WARN((native) != (expected), \ "raw %ld (0x%lx) != expected %lld (0x%llx)", \ (native), (native), \ (long long)(expected), (long long)(expected)); \ WARN(__this_cpu_read(pcp) != (expected), \ "pcp %ld (0x%lx) != expected %lld (0x%llx)", \ __this_cpu_read(pcp), __this_cpu_read(pcp), \ (long long)(expected), (long long)(expected)); \ } while (0) static DEFINE_PER_CPU(long, long_counter); static DEFINE_PER_CPU(unsigned long, ulong_counter); static int __init percpu_test_init(void) { /* * volatile prevents compiler from optimizing it uses, otherwise the * +ul_one/-ul_one below would replace with inc/dec instructions. */ volatile unsigned int ui_one = 1; long l = 0; unsigned long ul = 0; pr_info("percpu test start\n"); preempt_disable(); l += -1; __this_cpu_add(long_counter, -1); CHECK(l, long_counter, -1); l += 1; __this_cpu_add(long_counter, 1); CHECK(l, long_counter, 0); ul = 0; __this_cpu_write(ulong_counter, 0); ul += 1UL; __this_cpu_add(ulong_counter, 1UL); CHECK(ul, ulong_counter, 1); ul += -1UL; __this_cpu_add(ulong_counter, -1UL); CHECK(ul, ulong_counter, 0); ul += -(unsigned long)1; __this_cpu_add(ulong_counter, -(unsigned long)1); CHECK(ul, ulong_counter, -1); ul = 0; __this_cpu_write(ulong_counter, 0); ul -= 1; __this_cpu_dec(ulong_counter); CHECK(ul, ulong_counter, -1); CHECK(ul, ulong_counter, ULONG_MAX); l += -ui_one; __this_cpu_add(long_counter, -ui_one); CHECK(l, long_counter, 0xffffffff); l += ui_one; __this_cpu_add(long_counter, ui_one); CHECK(l, long_counter, (long)0x100000000LL); l = 0; __this_cpu_write(long_counter, 0); l -= ui_one; __this_cpu_sub(long_counter, ui_one); CHECK(l, long_counter, -1); l = 0; __this_cpu_write(long_counter, 0); l += ui_one; __this_cpu_add(long_counter, ui_one); CHECK(l, long_counter, 1); l += -ui_one; __this_cpu_add(long_counter, -ui_one); CHECK(l, long_counter, (long)0x100000000LL); l = 0; __this_cpu_write(long_counter, 0); l -= ui_one; this_cpu_sub(long_counter, ui_one); CHECK(l, long_counter, -1); CHECK(l, long_counter, ULONG_MAX); ul = 0; __this_cpu_write(ulong_counter, 0); ul += ui_one; __this_cpu_add(ulong_counter, ui_one); CHECK(ul, ulong_counter, 1); ul = 0; __this_cpu_write(ulong_counter, 0); ul -= ui_one; __this_cpu_sub(ulong_counter, ui_one); CHECK(ul, ulong_counter, -1); CHECK(ul, ulong_counter, ULONG_MAX); ul = 3; __this_cpu_write(ulong_counter, 3); ul = this_cpu_sub_return(ulong_counter, ui_one); CHECK(ul, ulong_counter, 2); ul = __this_cpu_sub_return(ulong_counter, ui_one); CHECK(ul, ulong_counter, 1); preempt_enable(); pr_info("percpu test done\n"); return -EAGAIN; /* Fail will directly unload the module */ } static void __exit percpu_test_exit(void) { } module_init(percpu_test_init) module_exit(percpu_test_exit) MODULE_LICENSE("GPL"); MODULE_AUTHOR("Greg Thelen"); MODULE_DESCRIPTION("percpu operations test"); 2586db'>soc/sunxi
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authorSowmini Varadhan <sowmini.varadhan@oracle.com>2017-01-10 07:47:15 -0800
committerDavid S. Miller <davem@davemloft.net>2017-01-10 21:02:42 -0500
commita505e58252715bbc18a0ee1abae23615fe2586db (patch)
treed816d838641ba1082b2356f4e3a365039e63b14d /sound/soc/sunxi
parent3bf003335ba356aac5a43e28640159d4ae8a2a60 (diff)
packet: pdiag_put_ring() should return TX_RING info for TPACKET_V3
Commit 7f953ab2ba46 ("af_packet: TX_RING support for TPACKET_V3") now makes it possible to use TX_RING with TPACKET_V3, so make the the relevant information available via 'ss -e -a --packet' Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'sound/soc/sunxi')