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generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-09-08 23:40:38 +0000
cently, results in this warning: ------------[ cut here ]------------ WARNING: CPU: 5 PID: 1 at kernel/events/core.c:8485 perf_pmu_register+0x420/0x428 Modules linked in: CPU: 5 PID: 1 Comm: swapper/0 Not tainted 4.7.0-rc1+ #2 task: 00000009c5240000 ti: 00000009c5234000 task.ti: 00000009c5234000 Krnl PSW : 0704c00180000000 0000000000220c50 (perf_pmu_register+0x420/0x428) R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:0 RI:0 EA:3 Krnl GPRS: ffffffffffffffff 0000000000b15ac6 0000000000000000 00000009cb440000 000000000022087a 0000000000000000 0000000000b78fa0 0000000000000000 0000000000a9aa90 0000000000000084 0000000000000005 000000000088a97a 0000000000000004 0000000000749dd0 000000000022087a 00000009c5237cc0 Krnl Code: 0000000000220c44: a7f4ff54 brc 15,220aec 0000000000220c48: 92011000 mvi 0(%r1),1 #0000000000220c4c: a7f40001 brc 15,220c4e >0000000000220c50: a7f4ff12 brc 15,220a74 0000000000220c54: 0707 bcr 0,%r7 0000000000220c56: 0707 bcr 0,%r7 0000000000220c58: ebdff0800024 stmg %r13,%r15,128(%r15) 0000000000220c5e: a7f13fe0 tmll %r15,16352 Call Trace: ([<000000000022087a>] perf_pmu_register+0x4a/0x428) ([<0000000000b2c25c>] init_cpum_sampling_pmu+0x14c/0x1f8) ([<0000000000100248>] do_one_initcall+0x48/0x140) ([<0000000000b25d26>] kernel_init_freeable+0x1e6/0x2a0) ([<000000000072bda4>] kernel_init+0x24/0x138) ([<000000000073495e>] kernel_thread_starter+0x6/0xc) ([<0000000000734958>] kernel_thread_starter+0x0/0xc) Last Breaking-Event-Address: [<0000000000220c4c>] perf_pmu_register+0x41c/0x428 ---[ end trace 0c6ef9f5b771ad97 ]--- Using the perf_sw_context is an option because the cpum_cf PMU does not use interrupts. To make this more clear, initialize the capabilities in the PMU structure. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Suggested-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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