| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Heiko Carstens | 388 | 88.58% | 5 | 38.46% |
| Christoph Lameter | 20 | 4.57% | 2 | 15.38% |
| Martin Schwidefsky | 11 | 2.51% | 2 | 15.38% |
| Andrew Morton | 8 | 1.83% | 1 | 7.69% |
| Tejun Heo | 7 | 1.60% | 1 | 7.69% |
| Mike Travis | 3 | 0.68% | 1 | 7.69% |
| Greg Kroah-Hartman | 1 | 0.23% | 1 | 7.69% |
| Total | 438 | 13 |
/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ARCH_S390_PERCPU__ #define __ARCH_S390_PERCPU__ #include <linux/preempt.h> #include <asm/cmpxchg.h> /* * s390 uses its own implementation for per cpu data, the offset of * the cpu local data area is cached in the cpu's lowcore memory. */ #define __my_cpu_offset S390_lowcore.percpu_offset /* * For 64 bit module code, the module may be more than 4G above the * per cpu area, use weak definitions to force the compiler to * generate external references. */ #if defined(MODULE) #define ARCH_NEEDS_WEAK_PER_CPU #endif /* * We use a compare-and-swap loop since that uses less cpu cycles than * disabling and enabling interrupts like the generic variant would do. */ #define arch_this_cpu_to_op_simple(pcp, val, op) \ ({ \ typedef typeof(pcp) pcp_op_T__; \ pcp_op_T__ old__, new__, prev__; \ pcp_op_T__ *ptr__; \ preempt_disable(); \ ptr__ = raw_cpu_ptr(&(pcp)); \ prev__ = *ptr__; \ do { \ old__ = prev__; \ new__ = old__ op (val); \ prev__ = cmpxchg(ptr__, old__, new__); \ } while (prev__ != old__); \ preempt_enable(); \ new__; \ }) #define this_cpu_add_1(pcp, val) arch_this_cpu_to_op_simple(pcp, val, +) #define this_cpu_add_2(pcp, val) arch_this_cpu_to_op_simple(pcp, val, +) #define this_cpu_add_return_1(pcp, val) arch_this_cpu_to_op_simple(pcp, val, +) #define this_cpu_add_return_2(pcp, val) arch_this_cpu_to_op_simple(pcp, val, +) #define this_cpu_and_1(pcp, val) arch_this_cpu_to_op_simple(pcp, val, &) #define this_cpu_and_2(pcp, val) arch_this_cpu_to_op_simple(pcp, val, &) #define this_cpu_or_1(pcp, val) arch_this_cpu_to_op_simple(pcp, val, |) #define this_cpu_or_2(pcp, val) arch_this_cpu_to_op_simple(pcp, val, |) #ifndef CONFIG_HAVE_MARCH_Z196_FEATURES #define this_cpu_add_4(pcp, val) arch_this_cpu_to_op_simple(pcp, val, +) #define this_cpu_add_8(pcp, val) arch_this_cpu_to_op_simple(pcp, val, +) #define this_cpu_add_return_4(pcp, val) arch_this_cpu_to_op_simple(pcp, val, +) #define this_cpu_add_return_8(pcp, val) arch_this_cpu_to_op_simple(pcp, val, +) #define this_cpu_and_4(pcp, val) arch_this_cpu_to_op_simple(pcp, val, &) #define this_cpu_and_8(pcp, val) arch_this_cpu_to_op_simple(pcp, val, &) #define this_cpu_or_4(pcp, val) arch_this_cpu_to_op_simple(pcp, val, |) #define this_cpu_or_8(pcp, val) arch_this_cpu_to_op_simple(pcp, val, |) #else /* CONFIG_HAVE_MARCH_Z196_FEATURES */ #define arch_this_cpu_add(pcp, val, op1, op2, szcast) \ { \ typedef typeof(pcp) pcp_op_T__; \ pcp_op_T__ val__ = (val); \ pcp_op_T__ old__, *ptr__; \ preempt_disable(); \ ptr__ = raw_cpu_ptr(&(pcp)); \ if (__builtin_constant_p(val__) && \ ((szcast)val__ > -129) && ((szcast)val__ < 128)) { \ asm volatile( \ op2 " %[ptr__],%[val__]\n" \ : [ptr__] "+Q" (*ptr__) \ : [val__] "i" ((szcast)val__) \ : "cc"); \ } else { \ asm volatile( \ op1 " %[old__],%[val__],%[ptr__]\n" \ : [old__] "=d" (old__), [ptr__] "+Q" (*ptr__) \ : [val__] "d" (val__) \ : "cc"); \ } \ preempt_enable(); \ } #define this_cpu_add_4(pcp, val) arch_this_cpu_add(pcp, val, "laa", "asi", int) #define this_cpu_add_8(pcp, val) arch_this_cpu_add(pcp, val, "laag", "agsi", long) #define arch_this_cpu_add_return(pcp, val, op) \ ({ \ typedef typeof(pcp) pcp_op_T__; \ pcp_op_T__ val__ = (val); \ pcp_op_T__ old__, *ptr__; \ preempt_disable(); \ ptr__ = raw_cpu_ptr(&(pcp)); \ asm volatile( \ op " %[old__],%[val__],%[ptr__]\n" \ : [old__] "=d" (old__), [ptr__] "+Q" (*ptr__) \ : [val__] "d" (val__) \ : "cc"); \ preempt_enable(); \ old__ + val__; \ }) #define this_cpu_add_return_4(pcp, val) arch_this_cpu_add_return(pcp, val, "laa") #define this_cpu_add_return_8(pcp, val) arch_this_cpu_add_return(pcp, val, "laag") #define arch_this_cpu_to_op(pcp, val, op) \ { \ typedef typeof(pcp) pcp_op_T__; \ pcp_op_T__ val__ = (val); \ pcp_op_T__ old__, *ptr__; \ preempt_disable(); \ ptr__ = raw_cpu_ptr(&(pcp)); \ asm volatile( \ op " %[old__],%[val__],%[ptr__]\n" \ : [old__] "=d" (old__), [ptr__] "+Q" (*ptr__) \ : [val__] "d" (val__) \ : "cc"); \ preempt_enable(); \ } #define this_cpu_and_4(pcp, val) arch_this_cpu_to_op(pcp, val, "lan") #define this_cpu_and_8(pcp, val) arch_this_cpu_to_op(pcp, val, "lang") #define this_cpu_or_4(pcp, val) arch_this_cpu_to_op(pcp, val, "lao") #define this_cpu_or_8(pcp, val) arch_this_cpu_to_op(pcp, val, "laog") #endif /* CONFIG_HAVE_MARCH_Z196_FEATURES */ #define arch_this_cpu_cmpxchg(pcp, oval, nval) \ ({ \ typedef typeof(pcp) pcp_op_T__; \ pcp_op_T__ ret__; \ pcp_op_T__ *ptr__; \ preempt_disable(); \ ptr__ = raw_cpu_ptr(&(pcp)); \ ret__ = cmpxchg(ptr__, oval, nval); \ preempt_enable(); \ ret__; \ }) #define this_cpu_cmpxchg_1(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) #define this_cpu_cmpxchg_2(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) #define this_cpu_cmpxchg_4(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) #define this_cpu_cmpxchg_8(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) #define arch_this_cpu_xchg(pcp, nval) \ ({ \ typeof(pcp) *ptr__; \ typeof(pcp) ret__; \ preempt_disable(); \ ptr__ = raw_cpu_ptr(&(pcp)); \ ret__ = xchg(ptr__, nval); \ preempt_enable(); \ ret__; \ }) #define this_cpu_xchg_1(pcp, nval) arch_this_cpu_xchg(pcp, nval) #define this_cpu_xchg_2(pcp, nval) arch_this_cpu_xchg(pcp, nval) #define this_cpu_xchg_4(pcp, nval) arch_this_cpu_xchg(pcp, nval) #define this_cpu_xchg_8(pcp, nval) arch_this_cpu_xchg(pcp, nval) #define arch_this_cpu_cmpxchg_double(pcp1, pcp2, o1, o2, n1, n2) \ ({ \ typeof(pcp1) o1__ = (o1), n1__ = (n1); \ typeof(pcp2) o2__ = (o2), n2__ = (n2); \ typeof(pcp1) *p1__; \ typeof(pcp2) *p2__; \ int ret__; \ preempt_disable(); \ p1__ = raw_cpu_ptr(&(pcp1)); \ p2__ = raw_cpu_ptr(&(pcp2)); \ ret__ = __cmpxchg_double(p1__, p2__, o1__, o2__, n1__, n2__); \ preempt_enable(); \ ret__; \ }) #define this_cpu_cmpxchg_double_8 arch_this_cpu_cmpxchg_double #include <asm-generic/percpu.h> #endif /* __ARCH_S390_PERCPU__ */
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