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/linux/security/
H A DKconfig.hardening30 variables initialized), but the performance impact depends
101 impact being driven by the depth of the stack usage, rather than
104 The performance impact on a single CPU system kernel compilation
148 can be useful for estimating the KSTACK_ERASE performance impact
168 heap content exposures. The performance impact varies by
169 workload, but most cases see <1% impact. Some synthetic
185 The performance impact varies by workload, but is more expensive
187 touching "cold" memory areas. Most cases see 3-5% impact. Some
207 image. This has a less than 1% performance impact on most
299 Enabling this feature will introduce some performance impact,
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/linux/drivers/zorro/
H A Dzorro.ids118 0800 Impact Series I [SCSI Host Adapter and RAM Expansion]
119 2000 Impact Vision 24 [Graphics Card]
132 0100 Impact Series I (4K) [SCSI Host Adapter]
133 0200 Impact Series I (16K/2) [SCSI Host Adapter]
134 0300 Impact Series I (16K/2) [SCSI Host Adapter]
135 0800 Impact 3001 [IDE Interface]
136 0900 Impact 3001 [RAM Expansion]
137 0a00 Impact Series II [RAM Expansion]
152 0d00 Impact 3001 [IDE Interface]
154 2000 Impact Vision 24 [Graphics Card]
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/linux/Documentation/ABI/testing/
H A Dsysfs-class-fc_host7 performance impact notification (FPIN) event.
15 performance impact notification (FPIN) event.
23 performance impact notification (FPIN) event.
H A Dsysfs-class-fc_remote_ports7 performance impact notification (FPIN) event.
15 performance impact notification (FPIN) event.
23 performance impact notification (FPIN) event.
H A Dsysfs-class-devlink45 This file indicates if the device link has any impact on the
82 and has no impact on the binding, unbinding and syncing the
/linux/tools/perf/pmu-events/arch/x86/sierraforest/
H A Duncore-interconnect.json1089 …"BriefDescription": "Valid Flits Received : All Data : Shows legal flit time (hides impact of L0p …
1109 …"BriefDescription": "Valid Flits Received : Data : Shows legal flit time (hides impact of L0p and …
1119 …"BriefDescription": "Valid Flits Received : Idle : Shows legal flit time (hides impact of L0p and …
1129 …: "Valid Flits Received : LLCRD Not Empty : Shows legal flit time (hides impact of L0p and L0c). :…
1139 …"BriefDescription": "Valid Flits Received : LLCTRL : Shows legal flit time (hides impact of L0p an…
1149 …ion": "Valid Flits Received : All Non Data : Shows legal flit time (hides impact of L0p and L0c).",
1158 …Flits Received : Slot NULL or LLCRD Empty : Shows legal flit time (hides impact of L0p and L0c). :…
1168 …: "Valid Flits Received : Protocol Header : Shows legal flit time (hides impact of L0p and L0c). :…
1178 …"BriefDescription": "Valid Flits Received : Slot 0 : Shows legal flit time (hides impact of L0p an…
1188 …"BriefDescription": "Valid Flits Received : Slot 1 : Shows legal flit time (hides impact of L0p an…
[all …]
/linux/drivers/atm/
H A DKconfig60 generally using printks, but still has some impact on performance.
200 When active, these messages can have a significant impact on the
202 inactive, they will have only a modest impact on performance.
247 When active, these messages can have a significant impact on the
249 inactive, they will have only a modest impact on performance.
300 When active, these messages can have a significant impact on
/linux/tools/perf/pmu-events/arch/x86/graniterapids/
H A Duncore-interconnect.json1443 …"BriefDescription": "Valid Flits Received : All Data : Shows legal flit time (hides impact of L0p …
1463 …"BriefDescription": "Valid Flits Received : Data : Shows legal flit time (hides impact of L0p and …
1473 …"BriefDescription": "Valid Flits Received : Idle : Shows legal flit time (hides impact of L0p and …
1483 …: "Valid Flits Received : LLCRD Not Empty : Shows legal flit time (hides impact of L0p and L0c). :…
1493 …"BriefDescription": "Valid Flits Received : LLCTRL : Shows legal flit time (hides impact of L0p an…
1503 …ion": "Valid Flits Received : All Non Data : Shows legal flit time (hides impact of L0p and L0c).",
1512 …Flits Received : Slot NULL or LLCRD Empty : Shows legal flit time (hides impact of L0p and L0c). :…
1522 …: "Valid Flits Received : Protocol Header : Shows legal flit time (hides impact of L0p and L0c). :…
1532 …"BriefDescription": "Valid Flits Received : Slot 0 : Shows legal flit time (hides impact of L0p an…
1542 …"BriefDescription": "Valid Flits Received : Slot 1 : Shows legal flit time (hides impact of L0p an…
[all …]
/linux/Documentation/admin-guide/hw-vuln/
H A Dl1tf.rst80 impact. The kernel ensures that the address bits of PTEs, which are not
111 deployment scenario. The mitigations, their protection scope and impact
178 data. Flushing the L1D has a performance impact as the processor has to
182 scenarios where guest VMEXIT/VMENTER are rare the performance impact is
279 completely. Disabling SMT can have a significant performance impact, but
280 the impact depends on the hosting scenario and the type of workloads.
281 The impact of disabling SMT needs also to be weighted against the impact
354 significant performance impact especially when the Meltdown mitigation
360 address the performance impact of disabling SMT or EPT.
547 enabled and L1D flushing is not required, but the performance impact is
H A Dspecial-register-buffer-data-sampling.rst83 logical processors that miss their core caches, with an impact similar to
90 take longer to execute and do not impact performance of sibling logical
/linux/Documentation/scheduler/
H A Dsched-energy.rst9 the impact of its decisions on the energy consumed by CPUs. EAS relies on an
11 with a minimal impact on throughput. This document aims at providing an
57 impact.
264 running on a little, but it won't impact the other tasks of the little CPUs
274 impact on throughput for high-utilization scenarios, EAS also implements another
345 EAS uses the EM of a platform to estimate the impact of scheduling decisions on
/linux/arch/arm64/kernel/
H A DMakefile18 # can significantly impact performance. Avoid instrumenting the stack trace
19 # collection code to minimize this impact.
/linux/Documentation/accel/qaic/
H A Dqaic.rst87 Major number updates indicate changes to the NNC protocol which impact the
90 Minor number updates indicate changes to the NNC protocol which impact the
91 commands (does not impact QAIC).
/linux/Documentation/arch/powerpc/
H A Dqe_firmware.rst120 which has an impact on the software drivers. Each bit has its own impact
233 impact on the device drivers. Each bit has its own impact and has special
/linux/Documentation/admin-guide/mm/
H A Dzswap.rst18 performance impact of swapping.
22 impact to the guest workload and guests sharing the I/O subsystem
H A Dmultigen_lru.rst67 cause janks (lags when rendering UI) and negatively impact user
97 in a given time interval, and it is usually done with little impact on
/linux/kernel/livepatch/
H A DKconfig17 This option has no runtime impact until a kernel "patch"
/linux/kernel/trace/rv/monitors/sleep/
H A DKconfig20 Enabling this monitor may have performance impact (due to select
/linux/arch/parisc/
H A DKconfig.debug8 Add checks with low performance impact to the spinlock functions
/linux/tools/testing/selftests/bpf/progs/
H A Dbpf_compiler.h11 same impact than the loop-unroll-enable pragma above. */
/linux/drivers/infiniband/hw/hfi1/
H A Daspm.h28 /* Quickest exit for minimum impact */ in aspm_ctx_disable()
/linux/fs/ocfs2/
H A Ddcache.h22 * ->d_iput() anyway, so there should be minimal impact.
/linux/arch/alpha/include/uapi/asm/
H A Dtypes.h15 * and we don't want to impact user mode with our change to ll64
/linux/Documentation/accounting/
H A Dpsi.rst19 such resource crunches and the time impact it has on complex workloads
52 severe impact on performance, and it's useful to distinguish this
/linux/arch/mips/include/asm/xtalk/
H A Dxwidget.h97 #define WIDGET_IMPCT_MFGR_NUM 0x2aa /* HQ4 / Impact GFX */
146 "impact",

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