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Forcefully unbinding PMU drivers during perf sampling will lead to a kernel panic, because the perf upper-layer framework call a NULL pointer in this situation. To solve this issue, "suppress_bind_attrs" should be set to true, so that bind/unbind can be disabled via sysfs and prevent unbinding PMU drivers during perf sampling. Signed-off-by: Qi Liu <liuqi115@huawei.com> Reviewed-by: John Garry <john.garry@huawei.com> Link: https://lore.kernel.org/r/1594975763-32966-1-git-send-email-liuqi115@huawei.com Signed-off-by: Will Deacon <will@kernel.org> |
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| .. | ||
| hisi_uncore_ddrc_pmu.c | ||
| hisi_uncore_hha_pmu.c | ||
| hisi_uncore_l3c_pmu.c | ||
| hisi_uncore_pmu.c | ||
| hisi_uncore_pmu.h | ||
| Kconfig | ||
| Makefile | ||