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2019-05-15Merge tag 'kvmarm-for-v5.2' of ↵Paolo Bonzini31-181/+1914
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm updates for 5.2 - guest SVE support - guest Pointer Authentication support - Better discrimination of perf counters between host and guests Conflicts: include/uapi/linux/kvm.h
2019-05-15Merge tag 'kvm-ppc-next-5.2-2' of ↵Paolo Bonzini31-295/+2670
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into HEAD PPC KVM update for 5.2 * Support for guests to access the new POWER9 XIVE interrupt controller hardware directly, reducing interrupt latency and overhead for guests. * In-kernel implementation of the H_PAGE_INIT hypercall. * Reduce memory usage of sparsely-populated IOMMU tables. * Several bug fixes. Second PPC KVM update for 5.2 * Fix a bug, fix a spelling mistake, remove some useless code.
2019-05-15MIPS: Alchemy: add DMA masks for on-chip ethernetManuel Lauss1-8/+14
Makes au1000-eth work again, tested on DB1500. Signed-off-by: Manuel Lauss <[email protected]> Signed-off-by: Paul Burton <[email protected]> Cc: Linux-MIPS <[email protected]>
2019-05-15Revert "KVM: nVMX: Expose RDPMC-exiting only when guest supports PMU"Sean Christopherson1-25/+0
The RDPMC-exiting control is dependent on the existence of the RDPMC instruction itself, i.e. is not tied to the "Architectural Performance Monitoring" feature. For all intents and purposes, the control exists on all CPUs with VMX support since RDPMC also exists on all VCPUs with VMX supported. Per Intel's SDM: The RDPMC instruction was introduced into the IA-32 Architecture in the Pentium Pro processor and the Pentium processor with MMX technology. The earlier Pentium processors have performance-monitoring counters, but they must be read with the RDMSR instruction. Because RDPMC-exiting always exists, KVM requires the control and refuses to load if it's not available. As a result, hiding the PMU from a guest breaks nested virtualization if the guest attemts to use KVM. While it's not explicitly stated in the RDPMC pseudocode, the VM-Exit check for RDPMC-exiting follows standard fault vs. VM-Exit prioritization for privileged instructions, e.g. occurs after the CPL/CR0.PE/CR4.PCE checks, but before the counter referenced in ECX is checked for validity. In other words, the original KVM behavior of injecting a #GP was correct, and the KVM unit test needs to be adjusted accordingly, e.g. eat the #GP when the unit test guest (L3 in this case) executes RDPMC without RDPMC-exiting set in the unit test host (L2). This reverts commit e51bfdb68725dc052d16241ace40ea3140f938aa. Fixes: e51bfdb68725 ("KVM: nVMX: Expose RDPMC-exiting only when guest supports PMU") Reported-by: David Hill <[email protected]> Cc: Saar Amar <[email protected]> Cc: Mihai Carabas <[email protected]> Cc: Jim Mattson <[email protected]> Cc: Liran Alon <[email protected]> Cc: [email protected] Signed-off-by: Sean Christopherson <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2019-05-15kvm: x86: Fix L1TF mitigation for shadow MMUKai Huang1-5/+13
Currently KVM sets 5 most significant bits of physical address bits reported by CPUID (boot_cpu_data.x86_phys_bits) for nonpresent or reserved bits SPTE to mitigate L1TF attack from guest when using shadow MMU. However for some particular Intel CPUs the physical address bits of internal cache is greater than physical address bits reported by CPUID. Use the kernel's existing boot_cpu_data.x86_cache_bits to determine the five most significant bits. Doing so improves KVM's L1TF mitigation in the unlikely scenario that system RAM overlaps the high order bits of the "real" physical address space as reported by CPUID. This aligns with the kernel's warnings regarding L1TF mitigation, e.g. in the above scenario the kernel won't warn the user about lack of L1TF mitigation if x86_cache_bits is greater than x86_phys_bits. Also initialize shadow_nonpresent_or_rsvd_mask explicitly to make it consistent with other 'shadow_{xxx}_mask', and opportunistically add a WARN once if KVM's L1TF mitigation cannot be applied on a system that is marked as being susceptible to L1TF. Reviewed-by: Sean Christopherson <[email protected]> Signed-off-by: Kai Huang <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2019-05-15KVM: nVMX: Disable intercept for FS/GS base MSRs in vmcs02 when possibleSean Christopherson1-22/+25
If L1 is using an MSR bitmap, unconditionally merge the MSR bitmaps from L0 and L1 for MSR_{KERNEL,}_{FS,GS}_BASE. KVM unconditionally exposes MSRs L1. If KVM is also running in L1 then it's highly likely L1 is also exposing the MSRs to L2, i.e. KVM doesn't need to intercept L2 accesses. Based on code from Jintack Lim. Cc: Jintack Lim <jintack@xxxxxxxxxxxxxxx> Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx> Signed-off-by: Paolo Bonzini <[email protected]>
2019-05-15clk: Remove io.h from clk-provider.hStephen Boyd153-7/+158
Now that we've gotten rid of clk_readl() we can remove io.h from the clk-provider header and push out the io.h include to any code that isn't already including the io.h header but using things like readl/writel, etc. Found with this grep: git grep -l clk-provider.h | grep '.c$' | xargs git grep -L 'linux/io.h' | \ xargs git grep -l \ -e '\<__iowrite32_copy\>' --or \ -e '\<__ioread32_copy\>' --or \ -e '\<__iowrite64_copy\>' --or \ -e '\<ioremap_page_range\>' --or \ -e '\<ioremap_huge_init\>' --or \ -e '\<arch_ioremap_pud_supported\>' --or \ -e '\<arch_ioremap_pmd_supported\>' --or \ -e '\<devm_ioport_map\>' --or \ -e '\<devm_ioport_unmap\>' --or \ -e '\<IOMEM_ERR_PTR\>' --or \ -e '\<devm_ioremap\>' --or \ -e '\<devm_ioremap_nocache\>' --or \ -e '\<devm_ioremap_wc\>' --or \ -e '\<devm_iounmap\>' --or \ -e '\<devm_ioremap_release\>' --or \ -e '\<devm_memremap\>' --or \ -e '\<devm_memunmap\>' --or \ -e '\<__devm_memremap_pages\>' --or \ -e '\<pci_remap_cfgspace\>' --or \ -e '\<arch_has_dev_port\>' --or \ -e '\<arch_phys_wc_add\>' --or \ -e '\<arch_phys_wc_del\>' --or \ -e '\<memremap\>' --or \ -e '\<memunmap\>' --or \ -e '\<arch_io_reserve_memtype_wc\>' --or \ -e '\<arch_io_free_memtype_wc\>' --or \ -e '\<__io_aw\>' --or \ -e '\<__io_pbw\>' --or \ -e '\<__io_paw\>' --or \ -e '\<__io_pbr\>' --or \ -e '\<__io_par\>' --or \ -e '\<__raw_readb\>' --or \ -e '\<__raw_readw\>' --or \ -e '\<__raw_readl\>' --or \ -e '\<__raw_readq\>' --or \ -e '\<__raw_writeb\>' --or \ -e '\<__raw_writew\>' --or \ -e '\<__raw_writel\>' --or \ -e '\<__raw_writeq\>' --or \ -e '\<readb\>' --or \ -e '\<readw\>' --or \ -e '\<readl\>' --or \ -e '\<readq\>' --or \ -e '\<writeb\>' --or \ -e '\<writew\>' --or \ -e '\<writel\>' --or \ -e '\<writeq\>' --or \ -e '\<readb_relaxed\>' --or \ -e '\<readw_relaxed\>' --or \ -e '\<readl_relaxed\>' --or \ -e '\<readq_relaxed\>' --or \ -e '\<writeb_relaxed\>' --or \ -e '\<writew_relaxed\>' --or \ -e '\<writel_relaxed\>' --or \ -e '\<writeq_relaxed\>' --or \ -e '\<readsb\>' --or \ -e '\<readsw\>' --or \ -e '\<readsl\>' --or \ -e '\<readsq\>' --or \ -e '\<writesb\>' --or \ -e '\<writesw\>' --or \ -e '\<writesl\>' --or \ -e '\<writesq\>' --or \ -e '\<inb\>' --or \ -e '\<inw\>' --or \ -e '\<inl\>' --or \ -e '\<outb\>' --or \ -e '\<outw\>' --or \ -e '\<outl\>' --or \ -e '\<inb_p\>' --or \ -e '\<inw_p\>' --or \ -e '\<inl_p\>' --or \ -e '\<outb_p\>' --or \ -e '\<outw_p\>' --or \ -e '\<outl_p\>' --or \ -e '\<insb\>' --or \ -e '\<insw\>' --or \ -e '\<insl\>' --or \ -e '\<outsb\>' --or \ -e '\<outsw\>' --or \ -e '\<outsl\>' --or \ -e '\<insb_p\>' --or \ -e '\<insw_p\>' --or \ -e '\<insl_p\>' --or \ -e '\<outsb_p\>' --or \ -e '\<outsw_p\>' --or \ -e '\<outsl_p\>' --or \ -e '\<ioread8\>' --or \ -e '\<ioread16\>' --or \ -e '\<ioread32\>' --or \ -e '\<ioread64\>' --or \ -e '\<iowrite8\>' --or \ -e '\<iowrite16\>' --or \ -e '\<iowrite32\>' --or \ -e '\<iowrite64\>' --or \ -e '\<ioread16be\>' --or \ -e '\<ioread32be\>' --or \ -e '\<ioread64be\>' --or \ -e '\<iowrite16be\>' --or \ -e '\<iowrite32be\>' --or \ -e '\<iowrite64be\>' --or \ -e '\<ioread8_rep\>' --or \ -e '\<ioread16_rep\>' --or \ -e '\<ioread32_rep\>' --or \ -e '\<ioread64_rep\>' --or \ -e '\<iowrite8_rep\>' --or \ -e '\<iowrite16_rep\>' --or \ -e '\<iowrite32_rep\>' --or \ -e '\<iowrite64_rep\>' --or \ -e '\<__io_virt\>' --or \ -e '\<pci_iounmap\>' --or \ -e '\<virt_to_phys\>' --or \ -e '\<phys_to_virt\>' --or \ -e '\<ioremap_uc\>' --or \ -e '\<ioremap\>' --or \ -e '\<__ioremap\>' --or \ -e '\<iounmap\>' --or \ -e '\<ioremap\>' --or \ -e '\<ioremap_nocache\>' --or \ -e '\<ioremap_uc\>' --or \ -e '\<ioremap_wc\>' --or \ -e '\<ioremap_wc\>' --or \ -e '\<ioremap_wt\>' --or \ -e '\<ioport_map\>' --or \ -e '\<ioport_unmap\>' --or \ -e '\<ioport_map\>' --or \ -e '\<ioport_unmap\>' --or \ -e '\<xlate_dev_kmem_ptr\>' --or \ -e '\<xlate_dev_mem_ptr\>' --or \ -e '\<unxlate_dev_mem_ptr\>' --or \ -e '\<virt_to_bus\>' --or \ -e '\<bus_to_virt\>' --or \ -e '\<memset_io\>' --or \ -e '\<memcpy_fromio\>' --or \ -e '\<memcpy_toio\>' I also reordered a couple includes when they weren't alphabetical and removed clk.h from kona, replacing it with clk-provider.h because that driver doesn't use clk consumer APIs. Acked-by: Geert Uytterhoeven <[email protected]> Cc: Chen-Yu Tsai <[email protected]> Acked-by: Maxime Ripard <[email protected]> Acked-by: Tero Kristo <[email protected]> Acked-by: Sekhar Nori <[email protected]> Cc: Krzysztof Kozlowski <[email protected]> Acked-by: Mark Brown <[email protected]> Cc: Chris Zankel <[email protected]> Acked-by: Max Filippov <[email protected]> Acked-by: John Crispin <[email protected]> Acked-by: Heiko Stuebner <[email protected]> Signed-off-by: Stephen Boyd <[email protected]>
2019-05-15drm/msm: Upgrade gxpd checks to IS_ERR_OR_NULLSean Paul1-3/+3
dev_pm_domain_attach_by_name() can return NULL, so we should check for that case when we're about to dereference gxpd. Fixes: 9325d4266afd ("drm/msm/gpu: Attach to the GPU GX power domain") Cc: Jordan Crouse <[email protected]> Cc: Rob Clark <[email protected]> Reviewed-by: Jordan Crouse <[email protected]> Signed-off-by: Sean Paul <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-05-15ubifs: Convert xattr inum to host orderRichard Weinberger1-1/+1
UBIFS stores inode numbers as LE64 integers. We have to convert them to host oder, otherwise BE hosts won't be able to use the integer correctly. Reported-by: kbuild test robot <[email protected]> Fixes: 9ca2d7326444 ("ubifs: Limit number of xattrs per inode") Signed-off-by: Richard Weinberger <[email protected]>
2019-05-15ubifs: Use correct config name for encryptionRichard Weinberger1-2/+2
CONFIG_UBIFS_FS_ENCRYPTION is gone, fscrypt is now controlled via CONFIG_FS_ENCRYPTION. This problem slipped into the tree because of a mis-merge on my side. Reported-by: Eric Biggers <[email protected]> Fixes: eea2c05d927b ("ubifs: Remove #ifdef around CONFIG_FS_ENCRYPTION") Signed-off-by: Richard Weinberger <[email protected]>
2019-05-15ubifs: Fix build error without CONFIG_UBIFS_FS_XATTRYueHaibing1-1/+5
Fix gcc build error while CONFIG_UBIFS_FS_XATTR is not set fs/ubifs/dir.o: In function `ubifs_unlink': dir.c:(.text+0x260): undefined reference to `ubifs_purge_xattrs' fs/ubifs/dir.o: In function `do_rename': dir.c:(.text+0x1edc): undefined reference to `ubifs_purge_xattrs' fs/ubifs/dir.o: In function `ubifs_rmdir': dir.c:(.text+0x2638): undefined reference to `ubifs_purge_xattrs' Reported-by: Hulk Robot <[email protected]> Fixes: 9ca2d7326444 ("ubifs: Limit number of xattrs per inode") Signed-off-by: YueHaibing <[email protected]> Signed-off-by: Richard Weinberger <[email protected]>
2019-05-15io_uring: remove 'ev_flags' argumentJens Axboe1-14/+14
We always pass in 0 for the cqe flags argument, since the support for "this read hit page cache" hint was dropped. Signed-off-by: Jens Axboe <[email protected]>
2019-05-15perf parse-regs: Split parse_regsKan Liang4-7/+22
The available registers for --int-regs and --user-regs may be different, e.g. XMM registers. Split parse_regs into two dedicated functions for --int-regs and --user-regs respectively. Modify the warning message. "--user-regs=?" should be applied to show the available registers for --user-regs. Signed-off-by: Kan Liang <[email protected]> Tested-by: Ravi Bangoria <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Jiri Olsa <[email protected]> Link: http://lkml.kernel.org/r/[email protected] [ Changed docs as suggested by Ravi and agreed by Kan ] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15perf vendor events arm64: Add Cortex-A57 and Cortex-A72 eventsFlorian Fainelli2-0/+181
The Cortex-A57 and Cortex-A72 both support all ARMv8 recommended events up to the RC_ST_SPEC (0x91) event with the exception of: - L1D_CACHE_REFILL_INNER (0x44) - L1D_CACHE_REFILL_OUTER (0x45) - L1D_TLB_RD (0x4E) - L1D_TLB_WR (0x4F) - L2D_TLB_REFILL_RD (0x5C) - L2D_TLB_REFILL_WR (0x5D) - L2D_TLB_RD (0x5E) - L2D_TLB_WR (0x5F) - STREX_SPEC (0x6F) Create an appropriate JSON file for mapping those events and update the mapfile.csv for matching the Cortex-A57 and Cortex-A72 MIDR to that file. Signed-off-by: Florian Fainelli <[email protected]> Reviewed-by: John Garry <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Ganapatrao Kulkarni <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Sean V Kelley <[email protected]> Cc: Will Deacon <[email protected]> Cc: [email protected] (moderated list:arm pmu profiling and debugging) Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15perf vendor events arm64: Map Brahma-B53 CPUID to cortex-a53 eventsFlorian Fainelli1-0/+1
Broadcom's Brahma-B53 CPUs support the same type of events that the Cortex-A53 supports, recognize its CPUID and map it to the cortex-a53 events. Signed-off-by: Florian Fainelli <[email protected]> Acked-by: Will Deacon <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Ganapatrao Kulkarni <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: John Garry <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Sean V Kelley <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] (moderated list Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15perf vendor events arm64: Remove [[:xdigit:]] wildcardFlorian Fainelli1-1/+1
ARM64's implementation of get_cpuidr_str() masks out the revision bits [3:0] while reading the CPU identifier, there is no need for the [[:xdigit:]] wildcard. Signed-off-by: Florian Fainelli <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Ganapatrao Kulkarni <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: John Garry <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Sean V Kelley <[email protected]> Cc: Will Deacon <[email protected]> Cc: [email protected] (moderated list:arm pmu profiling and debugging) Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15perf jevents: Remove unused variableZenghui Yu1-1/+0
Address gcc warning: pmu-events/jevents.c: In function ‘save_arch_std_events’: pmu-events/jevents.c:417:15: warning: unused variable ‘sb’ [-Wunused-variable] struct stat *sb = data; ^~ Signed-off-by: Zenghui Yu <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: John Garry <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15perf test zstd: Fixup verbose mode outputArnaldo Carvalho de Melo1-5/+4
The shell tests should not redirect useful output to /dev/null, as that is done automatically by 'perf test' in non verbose mode, so remove that from the zstd comp/decomp test, fixing up verbose mode. Before: $ perf test zstd 68: Zstd perf.data compression/decompression : Ok $ perf test -v zstd 68: Zstd perf.data compression/decompression : --- start --- test child forked, pid 11956 -z, --compression-level[=<n>] Collecting compressed record file: Checking compressed events stats: test child finished with 0 ---- end ---- Zstd perf.data compression/decompression: Ok $ Now: $ perf test zstd 68: Zstd perf.data compression/decompression : Ok $ perf test -v zstd 68: Zstd perf.data compression/decompression : --- start --- test child forked, pid 12695 Collecting compressed record file: 0+500 records in 72+1 records out 37361 bytes (37 kB, 36 KiB) copied, 9.83796 s, 3.8 kB/s [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.001 MB /tmp/perf.data.rzq, compressed (original 0.004 MB, ratio is 3.679) ] Checking compressed events stats: # compressed : Zstd, level = 1, ratio = 4 COMPRESSED events: 3 test child finished with 0 ---- end ---- Zstd perf.data compression/decompression: Ok $ Cc: Alexander Shishkin <[email protected]> Cc: Alexey Budankov <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: https://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15perf tests: Implement Zstd comp/decomp integration testAlexey Budankov1-0/+35
Introduce a basic integration test for Zstd based record compression/decompression using 'perf record' and 'perf report'. Committer notes: Reduce a bit the freq (from 25 kHz to 5 kHz) and the number of /dev/null records read (from 1000 to 500), reducing the time it takes to something more in line with the time existing 'perf test' entries take to run. With that in place: $ time perf test zstd 68: Zstd perf.data compression/decompression : Ok real 0m10.376s user 0m0.105s sys 0m0.440s $ grep "model name" /proc/cpuinfo | head -1 model name : Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz $ Signed-off-by: Alexey Budankov <[email protected]> Reviewed-by: Jiri Olsa <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15perf inject: Enable COMPRESSED record decompressionAlexey Budankov1-0/+4
Initialized decompression part of Zstd based API so COMPRESSED records would be decompressed into the resulting output data file. Signed-off-by: Alexey Budankov <[email protected]> Reviewed-by: Jiri Olsa <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15perf report: Implement perf.data record decompressionAlexey Budankov5-2/+181
zstd_init(, comp_level = 0) initializes decompression part of API only hat now consists of zstd_decompress_stream() function. The perf.data PERF_RECORD_COMPRESSED records are decompressed using zstd_decompress_stream() function into a linked list of mmaped memory regions of mmap_comp_len size (struct decomp). After decompression of one COMPRESSED record its content is iterated and fetched for usual processing. The mmaped memory regions with decompressed events are kept in the linked list till the tool process termination. When dumping raw records (e.g., perf report -D --header) file offsets of events from compressed records are printed as zero. Committer notes: Since now we have support for processing PERF_RECORD_COMPRESSED, we see none, in raw form, like we saw in the previous patch commiter notes, they were decompressed into the usual PERF_RECORD_{FORK,MMAP,COMM,etc} records, we only see the stats for those PERF_RECORD_COMPRESSED events, and since I used the file generated in the commiter notes for the previous patch, there they are, 2 compressed records: $ perf report --header-only | grep cmdline # cmdline : /home/acme/bin/perf record -z2 sleep 1 $ perf report -D | grep COMPRESS COMPRESSED events: 2 COMPRESSED events: 0 $ perf report --stdio # To display the perf.data header info, please use --header/--header-only options. # # # Total Lost Samples: 0 # # Samples: 15 of event 'cycles:u' # Event count (approx.): 962227 # # Overhead Command Shared Object Symbol # ........ ....... ................ ........................... # 46.99% sleep libc-2.28.so [.] _dl_addr 29.24% sleep [unknown] [k] 0xffffffffaea00a67 16.45% sleep libc-2.28.so [.] __GI__IO_un_link.part.1 5.92% sleep ld-2.28.so [.] _dl_setup_hash 1.40% sleep libc-2.28.so [.] __nanosleep 0.00% sleep [unknown] [k] 0xffffffffaea00163 # # (Tip: To see callchains in a more compact form: perf report -g folded) # $ Signed-off-by: Alexey Budankov <[email protected]> Reviewed-by: Jiri Olsa <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15perf record: Implement -z,--compression_level[=<n>] optionAlexey Budankov2-0/+35
Implemented -z,--compression_level[=<n>] option that enables compression of mmaped kernel data buffers content in runtime during perf record mode collection. Default option value is 1 (fastest compression). Compression overhead has been measured for serial and AIO streaming when profiling matrix multiplication workload: ------------------------------------------------------------- | SERIAL | AIO-1 | ----------------------------------------------------------------| |-z | OVH(x) | ratio(x) size(MiB) | OVH(x) | ratio(x) size(MiB) | |---------------------------------------------------------------| | 0 | 1,00 | 1,000 179,424 | 1,00 | 1,000 187,527 | | 1 | 1,04 | 8,427 181,148 | 1,01 | 8,474 188,562 | | 2 | 1,07 | 8,055 186,953 | 1,03 | 7,912 191,773 | | 3 | 1,04 | 8,283 181,908 | 1,03 | 8,220 191,078 | | 5 | 1,09 | 8,101 187,705 | 1,05 | 7,780 190,065 | | 8 | 1,05 | 9,217 179,191 | 1,12 | 6,111 193,024 | ----------------------------------------------------------------- OVH = (Execution time with -z N) / (Execution time with -z 0) ratio - compression ratio size - number of bytes that was compressed size ~= trace size x ratio Committer notes: Testing it I noticed that it failed to disable build id processing when compression is enabled, and as we'd have to uncompress everything to look for the PERF_RECORD_{MMAP,SAMPLE,etc} to figure out which build ids to read from DSOs, we better disable build id processing when compression is enabled, logging with pr_debug() when doing so: Original patch: # perf record -z2 ^C[ perf record: Woken up 1 times to write data ] 0x1746e0 [0x76]: failed to process type: 81 [Invalid argument] [ perf record: Captured and wrote 1.568 MB perf.data, compressed (original 0.452 MB, ratio is 3.995) ] # After auto-disabling build id processing when compression is enabled: $ perf record -z2 sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.001 MB perf.data, compressed (original 0.001 MB, ratio is 2.292) ] $ perf record -v -z2 sleep 1 Compression enabled, disabling build id collection at the end of the session. <SNIP extra -v pr_debug() messages> [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.001 MB perf.data, compressed (original 0.001 MB, ratio is 2.305) ] $ Also, with parts of the patch originally after this one moved to just before this one we get: $ perf record -z2 sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.001 MB perf.data, compressed (original 0.001 MB, ratio is 2.371) ] $ perf report -D | grep COMPRESS 0 0x1b8 [0x155]: PERF_RECORD_COMPRESSED: unhandled! 0 0x30d [0x80]: PERF_RECORD_COMPRESSED: unhandled! COMPRESSED events: 2 COMPRESSED events: 0 $ I.e. when faced with PERF_RECORD_COMPRESSED that we still have no code to process, we just show it as not being handled, skip them and continue, while before we had: $ perf report -D | grep COMPRESS 0x1b8 [0x169]: failed to process type: 81 [Invalid argument] Error: failed to process sample 0 0x1b8 [0x169]: PERF_RECORD_COMPRESSED $ Signed-off-by: Alexey Budankov <[email protected]> Reviewed-by: Jiri Olsa <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15perf report: Add stub processing of compressed events for -DAlexey Budankov2-1/+20
Committer note: Split from a larger patch, this only dumps PERF_RECORD_COMPRESSED as unhandled, so that when we introduce the record part in the next patch, we don't see unhandled events when using 'perf record -D'. Changed it so that we dump the event if the handler is just a stub, i.e. for the case where we don't have ZSTD linked but we're processing a perf.data file generated by a tool with that linked. Also when failing to decompress we can't just dump the uncompressed event and return 0, we have to propagate the error. Signed-off-by: Alexey Budankov <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15perf record: Implement compression for AIO trace streamingAlexey Budankov3-113/+89
Compression is implemented using the functions from zstd.c. As the memory to operate on the compression uses mmap->aio.data[] buffers. If Zstd streaming compression API fails for some reason the data to be compressed are just copied into the memory buffers using plain memcpy(). Compressed trace frame consists of an array of PERF_RECORD_COMPRESSED records. Each element of the array is not longer that PERF_SAMPLE_MAX_SIZE and consists of perf_event_header followed by the compressed chunk that is decompressed on the loading stage. perf_mmap__aio_push() is replaced by perf_mmap__push() which is now used in the both serial and AIO streaming cases. perf_mmap__push() is extended with positive return values to signify absence of data ready for processing. Signed-off-by: Alexey Budankov <[email protected]> Reviewed-by: Jiri Olsa <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15perf record: Implement compression for serial trace streamingAlexey Budankov2-2/+51
Compression is implemented using the functions from zstd.c. As the memory to operate on the compression uses mmap->data buffer. If Zstd streaming compression API fails for some reason the data to be compressed are just copied into the memory buffers using plain memcpy(). Compressed trace frame consists of an array of PERF_RECORD_COMPRESSED records. Each element of the array is not longer that PERF_SAMPLE_MAX_SIZE and consists of perf_event_header followed by the compressed chunk that is decompressed on the loading stage. Comitter notes: Undo some unnecessary line breaks, remove some unnecessary () around zstd_data to then just get its address, and fix conflicts with BPF_PROG_INFO/BPF_BTF patchkits. Signed-off-by: Alexey Budankov <[email protected]> Reviewed-by: Jiri Olsa <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15perf tools: Introduce Zstd streaming based compression APIAlexey Budankov3-0/+114
Implemented functions are based on Zstd streaming compression API. The functions are used in runtime to compress data that come from mmaped kernel buffer. zstd_init(), zstd_fini() are used for initialization and finalization to allocate and deallocate internal zstd objects. zstd_compress_stream_to_records() is used to convert parts of mmaped kernel buffer into an array of PERF_RECORD_COMPRESSED records. Signed-off-by: Alexey Budankov <[email protected]> Reviewed-by: Jiri Olsa <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15perf mmap: Implement dedicated memory buffer for data compressionAlexey Budankov5-8/+44
Implemented mmap data buffer that is used as the memory to operate on when compressing data in case of serial trace streaming. Signed-off-by: Alexey Budankov <[email protected]> Reviewed-by: Jiri Olsa <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15perf record: Implement COMPRESSED event record and its attributesAlexey Budankov8-0/+105
Implemented PERF_RECORD_COMPRESSED event, related data types, header feature and functions to write, read and print feature attributes from the trace header section. comp_mmap_len preserves the size of mmaped kernel buffer that was used during collection. comp_mmap_len size is used on loading stage as the size of decomp buffer for decompression of COMPRESSED events content. Committer notes: Fixed up conflict with BPF_PROG_INFO and BTF_BTF header features. Signed-off-by: Alexey Budankov <[email protected]> Reviewed-by: Jiri Olsa <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15perf session: Define 'bytes_transferred' and 'bytes_compressed' metricsAlexey Budankov3-1/+16
Define 'bytes_transferred' and 'bytes_compressed' metrics to calculate ratio in the end of the data collection: compression ratio = bytes_transferred / bytes_compressed The 'bytes_transferred' metric accumulates the amount of bytes that was extracted from the mmaped kernel buffers for compression, while 'bytes_compressed' accumulates the amount of bytes that was received after applying compression. Signed-off-by: Alexey Budankov <[email protected]> Reviewed-by: Jiri Olsa <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15perf build tests: Add NO_LIBZSTD=1 to make_minimalArnaldo Carvalho de Melo1-1/+1
So that we can test the ifdef parts for this feature. Cc: Adrian Hunter <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Alexey Budankov <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: https://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man pages for trace sequences APIsTzvetomir Stoyanov1-0/+158
Create man pages for trace sequences libtraceevent APIs: trace_seq_init(), trace_seq_destroy(), trace_seq_reset(), trace_seq_terminate(), trace_seq_putc(), trace_seq_puts(), trace_seq_printf(), trace_seq_vprintf(), trace_seq_do_fprintf(), trace_seq_do_printf() Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man pages for APIs used to extract common fields from ↵Tzvetomir Stoyanov1-0/+137
a record Create man pages for libtraceevent APIs: tep_data_type(), tep_data_pid(), tep_data_preempt_count(), tep_data_flags() Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] [ Fixed missing T in description of NOSUPPORT flag ] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man page for tep_parse_header_page()Tzvetomir Stoyanov1-0/+82
Create man page for tep_parse_header_page() libtraceevent API. Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man pages for parse event APIsTzvetomir Stoyanov1-0/+90
Create man pages for libtraceevent APIs: tep_parse_event(), tep_parse_format() Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man pages for event filter APIsTzvetomir Stoyanov1-0/+209
Added new man pages, describing libtraceevent event filter APIs: tep_filter_alloc() tep_filter_free() tep_filter_reset() tep_filter_add_filter_str() tep_filter_strerror() tep_event_filtered() tep_filter_remove_event() tep_filter_match() tep_filter_copy() tep_filter_compare() tep_filter_make_string() Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man pages for event fields APIsTzvetomir Stoyanov1-0/+105
Create man pages for libtraceevent APIs: tep_event_common_fields(), tep_event_fields() Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man page for tep_read_number_field()Tzvetomir Stoyanov1-0/+81
Create man page for libtraceevent API tep_read_number_field(). Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man pages for print field APIsTzvetomir Stoyanov1-0/+126
Create man pages for libtraceevent APIs: tep_print_field(), tep_print_fields(), tep_print_num_field(), tep_print_func_field() Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man pages for get field value APIsTzvetomir Stoyanov1-0/+122
Create man pages for libtraceevent APIs: tep_get_any_field_val(), tep_get_common_field_val(), tep_get_field_val(), tep_get_field_raw() Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man pages for find field APIsTzvetomir Stoyanov1-0/+118
Create man pages for libtraceevent APIs: tep_find_common_field(), tep_find_field() tep_find_any_field() Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man pages for libtraceevent event get APIsTzvetomir Stoyanov1-0/+99
Create man pages for libtraceevent APIs: tep_get_event(), tep_get_first_event(), tep_get_events_count() Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man page for list events APIsTzvetomir Stoyanov1-0/+122
Create man page for libtraceevent APIs: tep_list_events() tep_list_events_copy() Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man pages for event find APIsTzvetomir Stoyanov1-0/+103
Create man pages for libtraceevent APIs: tep_find_event() tep_find_event_by_name() tep_find_event_by_record() Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man page for tep_read_number()Tzvetomir Stoyanov1-0/+78
Create man page for tep_read_number() libtraceevent API. Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man pages for registering print functionTzvetomir Stoyanov1-0/+155
Create man pages for libtraceevent APIs: tep_register_print_function() tep_unregister_print_function() Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man pages for function related libtraceevent APIsTzvetomir Stoyanov2-0/+271
Added new man pages, describing function related libtraceevent APIs: tep_register_function(), tep_register_print_string(), tep_find_function(), tep_find_function_address(), tep_set_function_resolver(), tep_reset_function_resolver() Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man pages for event handler APIsTzvetomir Stoyanov1-0/+156
Create man pages for libtraceevent APIs: tep_register_event_handler() tep_unregister_event_handler() Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man page for tep_strerror()Tzvetomir Stoyanov1-0/+85
Create man page for tep_strerror() libtraceevent API. Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] [ Added "always" to state it doesn't matter if it is POSIX or GNU ] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man page for page size APIsTzvetomir Stoyanov1-0/+82
Create man pages for libtraceevent APIs: tep_get_page_size() tep_set_page_size() Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-05-15tools lib traceevent: Man page for host endian APIsTzvetomir Stoyanov1-0/+104
Create man pages for libtraceevent APIs: tep_is_bigendian(), tep_is_local_bigendian(), tep_set_local_bigendian() Signed-off-by: Tzvetomir Stoyanov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Link: http://lore.kernel.org/linux-trace-devel/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>