| /linux/tools/testing/selftests/ftrace/test.d/kprobe/ |
| H A D | kprobe_opt_types.tc | 19 DEFAULT=$(cat /proc/sys/debug/kprobes-optimization)
20 echo 1 > /proc/sys/debug/kprobes-optimization
29 echo "$DEFAULT" > /proc/sys/debug/kprobes-optimization
33 echo "$DEFAULT" > /proc/sys/debug/kprobes-optimization
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| /linux/Documentation/trace/ |
| H A D | kprobes.rst | 54 probes work and how jump optimization works. They explain certain
169 How Does Jump Optimization Work?
181 When a probe is registered, before attempting this optimization,
221 Pre-optimization
242 Optimization subsection
251 of kprobe optimization supports only kernels with CONFIG_PREEMPT=n [4]_.
262 the optimization is complete, the kprobe is just dequeued from the
263 optimized list. If the optimization has been done, the jump is
273 .. [4] This optimization-safety checking may be replaced with the
278 The jump optimization changes the kprobe's pre_handler behavior.
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| /linux/Documentation/process/ |
| H A D | volatile-considered-harmful.rst | 15 to suppress optimization, which is almost never what one really wants to
19 all optimization-related problems in a more efficient way.
23 unwanted optimization. If they are being used properly, there will be no
42 forget anything it knows. There will be no optimization problems with
59 optimization, so, once again, volatile is unnecessary.
|
| /linux/arch/x86/ |
| H A D | Kconfig.cpu | 2 # Put here option for CPU selection and depending optimization
103 copy optimization, compiles the kernel with optimization flags
164 some extended instructions, and passes appropriate optimization
172 some extended instructions, and passes appropriate optimization
180 optimization flags to GCC.
187 like a 586 with TSC, and sets some GCC optimization flags (like a
346 # P6_NOPs are a relatively minor optimization that require a family >=
354 # the right-hand clause are the cores that benefit from this optimization.
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| /linux/tools/perf/pmu-events/arch/x86/amdzen2/ |
| H A D | floating-point.json | 71 …ful for measuring the effectiveness of the Move elimination and Scalar code optimization schemes.",
77 …optimization (have Z-bit either set or pass). This is a dispatch based speculative event, and is u…
83 …ful for measuring the effectiveness of the Move elimination and Scalar code optimization schemes.",
89 …ful for measuring the effectiveness of the Move elimination and Scalar code optimization schemes.",
|
| /linux/tools/perf/pmu-events/arch/x86/amdzen3/ |
| H A D | floating-point.json | 70 …ful for measuring the effectiveness of the Move elimination and Scalar code optimization schemes.",
76 …optimization (have Z-bit either set or pass). This is a dispatch based speculative event, and is u…
82 …ful for measuring the effectiveness of the Move elimination and Scalar code optimization schemes.",
88 …ful for measuring the effectiveness of the Move elimination and Scalar code optimization schemes.",
|
| /linux/Documentation/dev-tools/ |
| H A D | propeller.rst | 8 compiler. Propeller is a profile-guided optimization (PGO) method used
15 A few important notes about adopting Propeller optimization:
17 #. Although it can be used as a standalone optimization step, it is
34 The Propeller optimization process involves the following steps:
|
| H A D | autofdo.rst | 8 the Clang compiler. AutoFDO (Auto-Feedback-Directed Optimization)
9 is a type of profile-guided optimization (PGO) used to enhance the
13 optimization decisions, resulting in a more efficient binary. AutoFDO
14 is a powerful optimization technique, and data indicates that it can
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| /linux/tools/power/acpi/ |
| H A D | Makefile.config | 61 # use '-Os' optimization if available, else use -O2
62 OPTIMIZATION := $(call cc-supports,-Os,-O2)
87 CFLAGS += $(OPTIMIZATION) -fomit-frame-pointer
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| /linux/arch/powerpc/purgatory/ |
| H A D | Makefile | 5 # When profile-guided optimization is enabled, llvm emits two different
7 # optimization flags.
|
| /linux/tools/perf/pmu-events/arch/x86/amdzen1/ |
| H A D | floating-point.json | 172 …r measuring the effectiveness of the Move elimination and Scalar code optimization schemes. Number…
178 …"BriefDescription": "Number of Ops that are candidates for optimization (have Z-bit either set or …
179 …of the Move elimination and Scalar code optimization schemes. Number of Ops that are candidates fo…
186 …r measuring the effectiveness of the Move elimination and Scalar code optimization schemes. Number…
193 …r measuring the effectiveness of the Move elimination and Scalar code optimization schemes. Number…
|
| /linux/include/drm/ |
| H A D | drm_cache.h | 55 * only, but permits an optimization to be enabled in some cases, where in drm_arch_can_wc_memory()
63 * case. However, on ARM and arm64, enabling this optimization on a in drm_arch_can_wc_memory()
67 * optimization entirely for ARM and arm64. in drm_arch_can_wc_memory()
|
| /linux/scripts/ |
| H A D | Makefile.clang | 32 # certain optimization flags it knows it has not implemented.
36 CLANG_FLAGS += -Werror=ignored-optimization-argument
|
| /linux/arch/alpha/include/asm/ |
| H A D | elf.h | 20 #define R_ALPHA_LITERAL 4 /* GP relative 16 bit w/optimization */
21 #define R_ALPHA_LITUSE 5 /* Optimization hint for LITERAL */
130 specific libraries for optimization. This is more specific in
|
| /linux/Documentation/staging/ |
| H A D | static-keys.rst | 91 optimization.
100 In order to make use of this optimization you must first define a key::
184 to take advantage of this optimization. If there is no architecture support, we
248 Without the jump label optimization it looks like::
327 this optimization is about reducing the number of branches. In addition, we've
|
| /linux/arch/x86/kernel/fpu/ |
| H A D | xstate.h | 131 * supports modified optimization which is not supported by XSAVE.
248 * This optimization is user-visible. Only use for states where
251 * Users of buffers produced with this optimization must check XSTATE_BV
271 * We don't use modified optimization because xrstor/xrstors might track
|
| /linux/arch/x86/purgatory/ |
| H A D | Makefile | 16 # When profile-guided optimization is enabled, llvm emits two different
18 # optimization flags.
|
| /linux/lib/crypto/mpi/ |
| H A D | mpih-div.c | 73 /* Possible optimization: in mpihelp_mod_1()
132 /* Possible optimization: in mpihelp_mod_1()
350 /* Possible optimization: We already have (q * n0) and (1 * n1) in mpihelp_divrem()
422 /* Possible optimization: in mpihelp_divmod_1()
480 /* Possible optimization: in mpihelp_divmod_1()
|
| /linux/crypto/ |
| H A D | lrw.c | 36 * used 4k optimization tables or no optimization at all. In the
93 /* initialize optimization table */ in lrw_setkey()
179 /* T <- I*Key2, using the optimization in lrw_xor_tweak()
|
| /linux/arch/riscv/purgatory/ |
| H A D | Makefile | 39 # When profile-guided optimization is enabled, llvm emits two different
41 # optimization flags.
|
| /linux/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_pmo/ |
| H A D | dml2_pmo_dcn3.c | 109 // If the stream of this plane needs ODM combine, no further optimization can be done. in optimize_dcc_mcache_no_odm()
293 * vmin optimization is required to be seamlessly switched off in pmo_dcn3_init_for_vmin()
300 * allow vmin optimization if the stream's base configuration in pmo_dcn3_init_for_vmin()
468 // Optimization loop in pmo_dcn3_optimize_dcc_mcache()
473 // The optimization logic depends on whether ODM combine is enabled, and the stream count. in pmo_dcn3_optimize_dcc_mcache()
486 // Optimization for streams with > 1 ODM combine factor is only supported for single display. in pmo_dcn3_optimize_dcc_mcache()
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| /linux/arch/powerpc/math-emu/ |
| H A D | udivmodti4.c | 83 This special case is necessary, not an optimization. in _fp_udivmodti4()
140 This special case is necessary, not an optimization. */ in _fp_udivmodti4()
|
| /linux/lib/raid6/ |
| H A D | sse2.c | 94 z0 = stop; /* P/Q right side optimization */ in raid6_sse21_xor_syndrome()
117 /* P/Q left side optimization */ in raid6_sse21_xor_syndrome()
205 z0 = stop; /* P/Q right side optimization */ in raid6_sse22_xor_syndrome()
239 /* P/Q left side optimization */ in raid6_sse22_xor_syndrome()
371 z0 = stop; /* P/Q right side optimization */ in raid6_sse24_xor_syndrome()
431 /* P/Q left side optimization */ in raid6_sse24_xor_syndrome()
|
| H A D | s390vx.uc | 86 z0 = stop; /* P/Q right side optimization */
106 /* P/Q left side optimization */
|
| /linux/kernel/ |
| H A D | kprobes.c | 443 /* Return true if the kprobe is ready for optimization. */
506 /* Optimization staging list, protected by 'kprobe_mutex' */
523 * The optimization/unoptimization refers 'online_cpus' via in do_optimize_kprobes()
534 /* Optimization never be done when disarmed */ in do_optimize_kprobes()
640 /* Wait for completing optimization and unoptimization */
676 /* Check if the kprobe is disabled or not ready for optimization. */ in optimize_kprobe()
789 /* Dequeue from the (un)optimization queue */ in kill_optimized_kprobe()
854 /* For preparing optimization, jump_label_text_reserved() is called. */ in try_to_optimize_kprobe()
887 /* If optimization is already allowed, just return. */ in optimize_all_kprobes()
900 pr_info("kprobe jump-optimization is enabled. All kprobes are optimized if possible.\n"); in optimize_all_kprobes()
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