443485d847
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEZH8oZUiU471FcZm+ONu9yGCSaT4FAl9jTJEACgkQONu9yGCS aT7XARAAo0FTpcnk62Aqo+Wv1BZOFtDxXTHPsW/1CzK2lebub4CGM0y7cNYBf8XP aEytk/RHKhh+F27htxuHZ6T+izQuWbJaM2h7LDwgaWTlmRh2FPEHTI3iwAgzVnM6 7V5OOcAWkC49CpnsBgEQX++R1SgttHypS+/naZpjeGJwd/ivjLSCBqxqiWt1IT1W Qo/LeOjQEbI58lln/3qS9zs0OLByJ/6Y8poYREngof2sbxaOARk8u1gWefe9kuYG jYcAKFFj3GGMrK+y5V9R6I/XoAB7/DQA/+LTlrLKuqxMXT+fzgLFFd9Yn/LORiYh hlNfvXDTvRL+aZ2LUGXhkUyU24dcO500HxHN7mp5TmWOVgkCa8lruCW5Vu3YLQ0u aXajrc9SGJJ9OZSb9Pm5oCkzIN0Io7GIkNaB5qIErur7egFC4/F5wZdShxnrcJhX yQRCIgCtQk1HoOuQkAKcaq6o/BjDkuOjFleu30JF+EMWm2KjQMN46td6tAnrxVdW CjXQzjYJxnLphZzKwUndmjekZk+OcAgw1E9Qud9F19R306PrL+eVmndh3PZyhNCF tga5vmB0acwWSRMRDsGncR3aG3WUt+xLhCy9gER/8amSJm6bBO9ENCJvALFksEJo T6t2UvMksr6R1ZqrP66EiJjBCgyyfhEhnctLKvW63yNNjcxhmZs= =3vVI -----END PGP SIGNATURE----- Merge 4.19.146 into android-4.19-stable Changes in 4.19.146 ARM: dts: logicpd-torpedo-baseboard: Fix broken audio ARM: dts: logicpd-som-lv-baseboard: Fix broken audio ARM: dts: socfpga: fix register entry for timer3 on Arria10 ARM: dts: ls1021a: fix QuadSPI-memory reg range RDMA/rxe: Fix memleak in rxe_mem_init_user RDMA/rxe: Drop pointless checks in rxe_init_ports RDMA/bnxt_re: Do not report transparent vlan from QP1 drm/sun4i: Fix dsi dcs long write function scsi: libsas: Set data_dir as DMA_NONE if libata marks qc as NODATA RDMA/core: Fix reported speed and width mmc: sdhci-msm: Add retries when all tuning phases are found valid ARM: dts: bcm: HR2: Fixed QSPI compatible string ARM: dts: NSP: Fixed QSPI compatible string ARM: dts: BCM5301X: Fixed QSPI compatible string arm64: dts: ns2: Fixed QSPI compatible string ARC: HSDK: wireup perf irq dmaengine: acpi: Put the CSRT table after using it netfilter: conntrack: allow sctp hearbeat after connection re-use drivers/net/wan/lapbether: Added needed_tailroom NFC: st95hf: Fix memleak in st95hf_in_send_cmd firestream: Fix memleak in fs_open ALSA: hda: Fix 2 channel swapping for Tegra drivers/net/wan/lapbether: Set network_header before transmitting xfs: initialize the shortform attr header padding entry irqchip/eznps: Fix build error for !ARC700 builds nvme-fabrics: don't check state NVME_CTRL_NEW for request acceptance nvme-rdma: serialize controller teardown sequences HID: quirks: Set INCREMENT_USAGE_ON_DUPLICATE for all Saitek X52 devices drivers/net/wan/hdlc_cisco: Add hard_header_len HID: elan: Fix memleak in elan_input_configured ARC: [plat-hsdk]: Switch ethernet phy-mode to rgmii-id cpufreq: intel_pstate: Refuse to turn off with HWP enabled cpufreq: intel_pstate: Fix intel_pstate_get_hwp_max() for turbo disabled ALSA: hda: fix a runtime pm issue in SOF when integrated GPU is disabled drm/amdgpu: Fix bug in reporting voltage for CIK iommu/amd: Do not use IOMMUv2 functionality when SME is active gcov: Disable gcov build with GCC 10 iio: adc: mcp3422: fix locking scope iio: adc: mcp3422: fix locking on error path iio: adc: ti-ads1015: fix conversion when CONFIG_PM is not set iio:light:ltr501 Fix timestamp alignment issue. iio:accel:bmc150-accel: Fix timestamp alignment and prevent data leak. iio:adc:ti-adc084s021 Fix alignment and data leak issues. iio:adc:ina2xx Fix timestamp alignment issue. iio:adc:max1118 Fix alignment of timestamp and data leak issues iio:adc:ti-adc081c Fix alignment and data leak issues iio:magnetometer:ak8975 Fix alignment and data leak issues. iio:light:max44000 Fix timestamp alignment and prevent data leak. iio:chemical:ccs811: Fix timestamp alignment and prevent data leak. iio: accel: kxsd9: Fix alignment of local buffer. iio:accel:mma7455: Fix timestamp alignment and prevent data leak. iio:accel:mma8452: Fix timestamp alignment and prevent data leak. staging: wlan-ng: fix out of bounds read in prism2sta_probe_usb() btrfs: require only sector size alignment for parent eb bytenr btrfs: fix lockdep splat in add_missing_dev btrfs: fix wrong address when faulting in pages in the search ioctl regulator: push allocation in set_consumer_device_supply() out of lock scsi: target: iscsi: Fix data digest calculation scsi: target: iscsi: Fix hang in iscsit_access_np() when getting tpg->np_login_sem drm/tve200: Stabilize enable/disable drm/msm: Disable preemption on all 5xx targets rbd: require global CAP_SYS_ADMIN for mapping and unmapping RDMA/rxe: Fix the parent sysfs read when the interface has 15 chars vgacon: remove software scrollback support fbcon: remove soft scrollback code fbcon: remove now unusued 'softback_lines' cursor() argument KVM: VMX: Don't freeze guest when event delivery causes an APIC-access exit ARM: dts: vfxxx: Add syscon compatible with OCOTP video: fbdev: fix OOB read in vga_8planes_imageblit() staging: greybus: audio: fix uninitialized value issue phy: qcom-qmp: Use correct values for ipq8074 PCIe Gen2 PHY init usb: core: fix slab-out-of-bounds Read in read_descriptors USB: serial: ftdi_sio: add IDs for Xsens Mti USB converter USB: serial: option: support dynamic Quectel USB compositions USB: serial: option: add support for SIM7070/SIM7080/SIM7090 modules usb: Fix out of sync data toggle if a configured device is reconfigured usb: typec: ucsi: acpi: Check the _DEP dependencies gcov: add support for GCC 10.1 Linux 4.19.146 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Ic9b467bc37c7cbbc1e9704d662bc0c8fda05416e
584 lines
14 KiB
C
584 lines
14 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* This code provides functions to handle gcc's profiling data format
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* introduced with gcc 4.7.
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*
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* This file is based heavily on gcc_3_4.c file.
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*
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* For a better understanding, refer to gcc source:
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* gcc/gcov-io.h
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* libgcc/libgcov.c
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*
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* Uses gcc-internal data definitions.
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*/
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#include <linux/errno.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/seq_file.h>
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#include <linux/vmalloc.h>
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#include "gcov.h"
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#if (__GNUC__ >= 10)
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#define GCOV_COUNTERS 8
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#elif (__GNUC__ >= 7)
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#define GCOV_COUNTERS 9
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#elif (__GNUC__ > 5) || (__GNUC__ == 5 && __GNUC_MINOR__ >= 1)
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#define GCOV_COUNTERS 10
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#elif __GNUC__ == 4 && __GNUC_MINOR__ >= 9
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#define GCOV_COUNTERS 9
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#else
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#define GCOV_COUNTERS 8
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#endif
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#define GCOV_TAG_FUNCTION_LENGTH 3
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static struct gcov_info *gcov_info_head;
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/**
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* struct gcov_ctr_info - information about counters for a single function
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* @num: number of counter values for this type
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* @values: array of counter values for this type
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*
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* This data is generated by gcc during compilation and doesn't change
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* at run-time with the exception of the values array.
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*/
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struct gcov_ctr_info {
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unsigned int num;
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gcov_type *values;
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};
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/**
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* struct gcov_fn_info - profiling meta data per function
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* @key: comdat key
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* @ident: unique ident of function
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* @lineno_checksum: function lineo_checksum
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* @cfg_checksum: function cfg checksum
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* @ctrs: instrumented counters
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*
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* This data is generated by gcc during compilation and doesn't change
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* at run-time.
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*
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* Information about a single function. This uses the trailing array
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* idiom. The number of counters is determined from the merge pointer
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* array in gcov_info. The key is used to detect which of a set of
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* comdat functions was selected -- it points to the gcov_info object
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* of the object file containing the selected comdat function.
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*/
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struct gcov_fn_info {
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const struct gcov_info *key;
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unsigned int ident;
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unsigned int lineno_checksum;
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unsigned int cfg_checksum;
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struct gcov_ctr_info ctrs[0];
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};
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/**
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* struct gcov_info - profiling data per object file
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* @version: gcov version magic indicating the gcc version used for compilation
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* @next: list head for a singly-linked list
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* @stamp: uniquifying time stamp
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* @filename: name of the associated gcov data file
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* @merge: merge functions (null for unused counter type)
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* @n_functions: number of instrumented functions
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* @functions: pointer to pointers to function information
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*
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* This data is generated by gcc during compilation and doesn't change
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* at run-time with the exception of the next pointer.
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*/
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struct gcov_info {
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unsigned int version;
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struct gcov_info *next;
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unsigned int stamp;
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const char *filename;
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void (*merge[GCOV_COUNTERS])(gcov_type *, unsigned int);
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unsigned int n_functions;
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struct gcov_fn_info **functions;
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};
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/**
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* gcov_info_filename - return info filename
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* @info: profiling data set
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*/
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const char *gcov_info_filename(struct gcov_info *info)
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{
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return info->filename;
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}
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/**
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* gcov_info_version - return info version
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* @info: profiling data set
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*/
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unsigned int gcov_info_version(struct gcov_info *info)
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{
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return info->version;
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}
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/**
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* gcov_info_next - return next profiling data set
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* @info: profiling data set
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*
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* Returns next gcov_info following @info or first gcov_info in the chain if
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* @info is %NULL.
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*/
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struct gcov_info *gcov_info_next(struct gcov_info *info)
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{
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if (!info)
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return gcov_info_head;
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return info->next;
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}
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/**
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* gcov_info_link - link/add profiling data set to the list
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* @info: profiling data set
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*/
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void gcov_info_link(struct gcov_info *info)
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{
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info->next = gcov_info_head;
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gcov_info_head = info;
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}
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/**
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* gcov_info_unlink - unlink/remove profiling data set from the list
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* @prev: previous profiling data set
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* @info: profiling data set
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*/
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void gcov_info_unlink(struct gcov_info *prev, struct gcov_info *info)
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{
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if (prev)
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prev->next = info->next;
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else
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gcov_info_head = info->next;
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}
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/**
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* gcov_info_within_module - check if a profiling data set belongs to a module
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* @info: profiling data set
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* @mod: module
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*
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* Returns true if profiling data belongs module, false otherwise.
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*/
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bool gcov_info_within_module(struct gcov_info *info, struct module *mod)
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{
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return within_module((unsigned long)info, mod);
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}
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/* Symbolic links to be created for each profiling data file. */
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const struct gcov_link gcov_link[] = {
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{ OBJ_TREE, "gcno" }, /* Link to .gcno file in $(objtree). */
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{ 0, NULL},
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};
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/*
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* Determine whether a counter is active. Doesn't change at run-time.
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*/
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static int counter_active(struct gcov_info *info, unsigned int type)
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{
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return info->merge[type] ? 1 : 0;
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}
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/* Determine number of active counters. Based on gcc magic. */
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static unsigned int num_counter_active(struct gcov_info *info)
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{
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unsigned int i;
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unsigned int result = 0;
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for (i = 0; i < GCOV_COUNTERS; i++) {
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if (counter_active(info, i))
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result++;
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}
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return result;
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}
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/**
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* gcov_info_reset - reset profiling data to zero
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* @info: profiling data set
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*/
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void gcov_info_reset(struct gcov_info *info)
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{
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struct gcov_ctr_info *ci_ptr;
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unsigned int fi_idx;
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unsigned int ct_idx;
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for (fi_idx = 0; fi_idx < info->n_functions; fi_idx++) {
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ci_ptr = info->functions[fi_idx]->ctrs;
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for (ct_idx = 0; ct_idx < GCOV_COUNTERS; ct_idx++) {
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if (!counter_active(info, ct_idx))
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continue;
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memset(ci_ptr->values, 0,
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sizeof(gcov_type) * ci_ptr->num);
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ci_ptr++;
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}
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}
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}
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/**
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* gcov_info_is_compatible - check if profiling data can be added
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* @info1: first profiling data set
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* @info2: second profiling data set
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*
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* Returns non-zero if profiling data can be added, zero otherwise.
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*/
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int gcov_info_is_compatible(struct gcov_info *info1, struct gcov_info *info2)
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{
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return (info1->stamp == info2->stamp);
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}
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/**
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* gcov_info_add - add up profiling data
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* @dest: profiling data set to which data is added
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* @source: profiling data set which is added
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*
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* Adds profiling counts of @source to @dest.
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*/
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void gcov_info_add(struct gcov_info *dst, struct gcov_info *src)
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{
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struct gcov_ctr_info *dci_ptr;
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struct gcov_ctr_info *sci_ptr;
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unsigned int fi_idx;
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unsigned int ct_idx;
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unsigned int val_idx;
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for (fi_idx = 0; fi_idx < src->n_functions; fi_idx++) {
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dci_ptr = dst->functions[fi_idx]->ctrs;
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sci_ptr = src->functions[fi_idx]->ctrs;
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for (ct_idx = 0; ct_idx < GCOV_COUNTERS; ct_idx++) {
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if (!counter_active(src, ct_idx))
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continue;
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for (val_idx = 0; val_idx < sci_ptr->num; val_idx++)
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dci_ptr->values[val_idx] +=
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sci_ptr->values[val_idx];
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dci_ptr++;
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sci_ptr++;
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}
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}
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}
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/**
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* gcov_info_dup - duplicate profiling data set
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* @info: profiling data set to duplicate
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*
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* Return newly allocated duplicate on success, %NULL on error.
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*/
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struct gcov_info *gcov_info_dup(struct gcov_info *info)
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{
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struct gcov_info *dup;
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struct gcov_ctr_info *dci_ptr; /* dst counter info */
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struct gcov_ctr_info *sci_ptr; /* src counter info */
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unsigned int active;
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unsigned int fi_idx; /* function info idx */
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unsigned int ct_idx; /* counter type idx */
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size_t fi_size; /* function info size */
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size_t cv_size; /* counter values size */
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dup = kmemdup(info, sizeof(*dup), GFP_KERNEL);
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if (!dup)
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return NULL;
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dup->next = NULL;
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dup->filename = NULL;
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dup->functions = NULL;
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dup->filename = kstrdup(info->filename, GFP_KERNEL);
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if (!dup->filename)
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goto err_free;
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dup->functions = kcalloc(info->n_functions,
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sizeof(struct gcov_fn_info *), GFP_KERNEL);
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if (!dup->functions)
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goto err_free;
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active = num_counter_active(info);
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fi_size = sizeof(struct gcov_fn_info);
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fi_size += sizeof(struct gcov_ctr_info) * active;
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for (fi_idx = 0; fi_idx < info->n_functions; fi_idx++) {
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dup->functions[fi_idx] = kzalloc(fi_size, GFP_KERNEL);
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if (!dup->functions[fi_idx])
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goto err_free;
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*(dup->functions[fi_idx]) = *(info->functions[fi_idx]);
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sci_ptr = info->functions[fi_idx]->ctrs;
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dci_ptr = dup->functions[fi_idx]->ctrs;
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for (ct_idx = 0; ct_idx < active; ct_idx++) {
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cv_size = sizeof(gcov_type) * sci_ptr->num;
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dci_ptr->values = vmalloc(cv_size);
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if (!dci_ptr->values)
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goto err_free;
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dci_ptr->num = sci_ptr->num;
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memcpy(dci_ptr->values, sci_ptr->values, cv_size);
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sci_ptr++;
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dci_ptr++;
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}
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}
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return dup;
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err_free:
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gcov_info_free(dup);
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return NULL;
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}
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/**
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* gcov_info_free - release memory for profiling data set duplicate
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* @info: profiling data set duplicate to free
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*/
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void gcov_info_free(struct gcov_info *info)
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{
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unsigned int active;
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unsigned int fi_idx;
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unsigned int ct_idx;
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struct gcov_ctr_info *ci_ptr;
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if (!info->functions)
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goto free_info;
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active = num_counter_active(info);
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for (fi_idx = 0; fi_idx < info->n_functions; fi_idx++) {
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if (!info->functions[fi_idx])
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continue;
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ci_ptr = info->functions[fi_idx]->ctrs;
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for (ct_idx = 0; ct_idx < active; ct_idx++, ci_ptr++)
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vfree(ci_ptr->values);
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kfree(info->functions[fi_idx]);
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}
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free_info:
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kfree(info->functions);
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kfree(info->filename);
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kfree(info);
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}
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#define ITER_STRIDE PAGE_SIZE
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/**
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* struct gcov_iterator - specifies current file position in logical records
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* @info: associated profiling data
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* @buffer: buffer containing file data
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* @size: size of buffer
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* @pos: current position in file
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*/
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struct gcov_iterator {
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struct gcov_info *info;
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void *buffer;
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size_t size;
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loff_t pos;
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};
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/**
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* store_gcov_u32 - store 32 bit number in gcov format to buffer
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* @buffer: target buffer or NULL
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* @off: offset into the buffer
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* @v: value to be stored
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*
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* Number format defined by gcc: numbers are recorded in the 32 bit
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* unsigned binary form of the endianness of the machine generating the
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* file. Returns the number of bytes stored. If @buffer is %NULL, doesn't
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* store anything.
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*/
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static size_t store_gcov_u32(void *buffer, size_t off, u32 v)
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{
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u32 *data;
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if (buffer) {
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data = buffer + off;
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*data = v;
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}
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return sizeof(*data);
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}
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/**
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* store_gcov_u64 - store 64 bit number in gcov format to buffer
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* @buffer: target buffer or NULL
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* @off: offset into the buffer
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* @v: value to be stored
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*
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* Number format defined by gcc: numbers are recorded in the 32 bit
|
|
* unsigned binary form of the endianness of the machine generating the
|
|
* file. 64 bit numbers are stored as two 32 bit numbers, the low part
|
|
* first. Returns the number of bytes stored. If @buffer is %NULL, doesn't store
|
|
* anything.
|
|
*/
|
|
static size_t store_gcov_u64(void *buffer, size_t off, u64 v)
|
|
{
|
|
u32 *data;
|
|
|
|
if (buffer) {
|
|
data = buffer + off;
|
|
|
|
data[0] = (v & 0xffffffffUL);
|
|
data[1] = (v >> 32);
|
|
}
|
|
|
|
return sizeof(*data) * 2;
|
|
}
|
|
|
|
/**
|
|
* convert_to_gcda - convert profiling data set to gcda file format
|
|
* @buffer: the buffer to store file data or %NULL if no data should be stored
|
|
* @info: profiling data set to be converted
|
|
*
|
|
* Returns the number of bytes that were/would have been stored into the buffer.
|
|
*/
|
|
static size_t convert_to_gcda(char *buffer, struct gcov_info *info)
|
|
{
|
|
struct gcov_fn_info *fi_ptr;
|
|
struct gcov_ctr_info *ci_ptr;
|
|
unsigned int fi_idx;
|
|
unsigned int ct_idx;
|
|
unsigned int cv_idx;
|
|
size_t pos = 0;
|
|
|
|
/* File header. */
|
|
pos += store_gcov_u32(buffer, pos, GCOV_DATA_MAGIC);
|
|
pos += store_gcov_u32(buffer, pos, info->version);
|
|
pos += store_gcov_u32(buffer, pos, info->stamp);
|
|
|
|
for (fi_idx = 0; fi_idx < info->n_functions; fi_idx++) {
|
|
fi_ptr = info->functions[fi_idx];
|
|
|
|
/* Function record. */
|
|
pos += store_gcov_u32(buffer, pos, GCOV_TAG_FUNCTION);
|
|
pos += store_gcov_u32(buffer, pos, GCOV_TAG_FUNCTION_LENGTH);
|
|
pos += store_gcov_u32(buffer, pos, fi_ptr->ident);
|
|
pos += store_gcov_u32(buffer, pos, fi_ptr->lineno_checksum);
|
|
pos += store_gcov_u32(buffer, pos, fi_ptr->cfg_checksum);
|
|
|
|
ci_ptr = fi_ptr->ctrs;
|
|
|
|
for (ct_idx = 0; ct_idx < GCOV_COUNTERS; ct_idx++) {
|
|
if (!counter_active(info, ct_idx))
|
|
continue;
|
|
|
|
/* Counter record. */
|
|
pos += store_gcov_u32(buffer, pos,
|
|
GCOV_TAG_FOR_COUNTER(ct_idx));
|
|
pos += store_gcov_u32(buffer, pos, ci_ptr->num * 2);
|
|
|
|
for (cv_idx = 0; cv_idx < ci_ptr->num; cv_idx++) {
|
|
pos += store_gcov_u64(buffer, pos,
|
|
ci_ptr->values[cv_idx]);
|
|
}
|
|
|
|
ci_ptr++;
|
|
}
|
|
}
|
|
|
|
return pos;
|
|
}
|
|
|
|
/**
|
|
* gcov_iter_new - allocate and initialize profiling data iterator
|
|
* @info: profiling data set to be iterated
|
|
*
|
|
* Return file iterator on success, %NULL otherwise.
|
|
*/
|
|
struct gcov_iterator *gcov_iter_new(struct gcov_info *info)
|
|
{
|
|
struct gcov_iterator *iter;
|
|
|
|
iter = kzalloc(sizeof(struct gcov_iterator), GFP_KERNEL);
|
|
if (!iter)
|
|
goto err_free;
|
|
|
|
iter->info = info;
|
|
/* Dry-run to get the actual buffer size. */
|
|
iter->size = convert_to_gcda(NULL, info);
|
|
iter->buffer = vmalloc(iter->size);
|
|
if (!iter->buffer)
|
|
goto err_free;
|
|
|
|
convert_to_gcda(iter->buffer, info);
|
|
|
|
return iter;
|
|
|
|
err_free:
|
|
kfree(iter);
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/**
|
|
* gcov_iter_get_info - return profiling data set for given file iterator
|
|
* @iter: file iterator
|
|
*/
|
|
void gcov_iter_free(struct gcov_iterator *iter)
|
|
{
|
|
vfree(iter->buffer);
|
|
kfree(iter);
|
|
}
|
|
|
|
/**
|
|
* gcov_iter_get_info - return profiling data set for given file iterator
|
|
* @iter: file iterator
|
|
*/
|
|
struct gcov_info *gcov_iter_get_info(struct gcov_iterator *iter)
|
|
{
|
|
return iter->info;
|
|
}
|
|
|
|
/**
|
|
* gcov_iter_start - reset file iterator to starting position
|
|
* @iter: file iterator
|
|
*/
|
|
void gcov_iter_start(struct gcov_iterator *iter)
|
|
{
|
|
iter->pos = 0;
|
|
}
|
|
|
|
/**
|
|
* gcov_iter_next - advance file iterator to next logical record
|
|
* @iter: file iterator
|
|
*
|
|
* Return zero if new position is valid, non-zero if iterator has reached end.
|
|
*/
|
|
int gcov_iter_next(struct gcov_iterator *iter)
|
|
{
|
|
if (iter->pos < iter->size)
|
|
iter->pos += ITER_STRIDE;
|
|
|
|
if (iter->pos >= iter->size)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* gcov_iter_write - write data for current pos to seq_file
|
|
* @iter: file iterator
|
|
* @seq: seq_file handle
|
|
*
|
|
* Return zero on success, non-zero otherwise.
|
|
*/
|
|
int gcov_iter_write(struct gcov_iterator *iter, struct seq_file *seq)
|
|
{
|
|
size_t len;
|
|
|
|
if (iter->pos >= iter->size)
|
|
return -EINVAL;
|
|
|
|
len = ITER_STRIDE;
|
|
if (iter->pos + len > iter->size)
|
|
len = iter->size - iter->pos;
|
|
|
|
seq_write(seq, iter->buffer + iter->pos, len);
|
|
|
|
return 0;
|
|
}
|