From f4cdf7ca9a1fdcca413157df19753f388a5a224e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 19 Aug 2026 10:09:22 -0700 Subject: Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ... --- tools/perf/util/srccode.c | 171 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 171 insertions(+) create mode 100644 tools/perf/util/srccode.c (limited to 'tools/perf/util/srccode.c') diff --git a/tools/perf/util/srccode.c b/tools/perf/util/srccode.c new file mode 100644 index 000000000..0f4907843 --- /dev/null +++ b/tools/perf/util/srccode.c @@ -0,0 +1,171 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Manage printing of source lines + * Copyright (c) 2017, Intel Corporation. + * Author: Andi Kleen + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "srccode.h" +#include "debug.h" +#include // page_size +#include "hashmap.h" + +#define MAXSRCCACHE (32*1024*1024) +#define MAXSRCFILES 64 +#define SRC_HTAB_SZ 64 + +struct srcfile { + struct hlist_node hash_nd; + struct list_head nd; + char *fn; + char **lines; + char *map; + unsigned numlines; + size_t maplen; +}; + +static struct hlist_head srcfile_htab[SRC_HTAB_SZ]; +static LIST_HEAD(srcfile_list); +static long map_total_sz; +static int num_srcfiles; + +static int countlines(char *map, int maplen) +{ + int numl; + char *end = map + maplen; + char *p = map; + + if (maplen == 0) + return 0; + numl = 0; + while (p < end && (p = memchr(p, '\n', end - p)) != NULL) { + numl++; + p++; + } + if (p < end) + numl++; + return numl; +} + +static void fill_lines(char **lines, int maxline, char *map, int maplen) +{ + int l; + char *end = map + maplen; + char *p = map; + + if (maplen == 0 || maxline == 0) + return; + l = 0; + lines[l++] = map; + while (p < end && (p = memchr(p, '\n', end - p)) != NULL) { + if (l >= maxline) + return; + lines[l++] = ++p; + } + if (p < end) + lines[l] = p; +} + +static void free_srcfile(struct srcfile *sf) +{ + list_del_init(&sf->nd); + hlist_del(&sf->hash_nd); + map_total_sz -= sf->maplen; + munmap(sf->map, sf->maplen); + zfree(&sf->lines); + zfree(&sf->fn); + free(sf); + num_srcfiles--; +} + +static struct srcfile *find_srcfile(char *fn) +{ + struct stat st; + struct srcfile *h; + int fd; + unsigned long sz; + size_t hval = str_hash(fn) % SRC_HTAB_SZ; + + hlist_for_each_entry (h, &srcfile_htab[hval], hash_nd) { + if (!strcmp(fn, h->fn)) { + /* Move to front */ + list_move(&h->nd, &srcfile_list); + return h; + } + } + + /* Only prune if there is more than one entry */ + while ((num_srcfiles > MAXSRCFILES || map_total_sz > MAXSRCCACHE) && + srcfile_list.next != &srcfile_list) { + assert(!list_empty(&srcfile_list)); + h = list_entry(srcfile_list.prev, struct srcfile, nd); + free_srcfile(h); + } + + fd = open(fn, O_RDONLY); + if (fd < 0 || fstat(fd, &st) < 0) { + pr_debug("cannot open source file %s\n", fn); + return NULL; + } + + h = malloc(sizeof(struct srcfile)); + if (!h) + return NULL; + + h->fn = strdup(fn); + if (!h->fn) + goto out_h; + + h->maplen = st.st_size; + sz = (h->maplen + page_size - 1) & ~(page_size - 1); + h->map = mmap(NULL, sz, PROT_READ, MAP_SHARED, fd, 0); + close(fd); + if (h->map == (char *)-1) { + pr_debug("cannot mmap source file %s\n", fn); + goto out_fn; + } + h->numlines = countlines(h->map, h->maplen); + h->lines = calloc(h->numlines, sizeof(char *)); + if (!h->lines) + goto out_map; + fill_lines(h->lines, h->numlines, h->map, h->maplen); + list_add(&h->nd, &srcfile_list); + hlist_add_head(&h->hash_nd, &srcfile_htab[hval]); + map_total_sz += h->maplen; + num_srcfiles++; + return h; + +out_map: + munmap(h->map, sz); +out_fn: + zfree(&h->fn); +out_h: + free(h); + return NULL; +} + +/* Result is not 0 terminated */ +char *find_sourceline(char *fn, unsigned line, int *lenp) +{ + char *l, *p; + struct srcfile *sf = find_srcfile(fn); + if (!sf) + return NULL; + line--; + if (line >= sf->numlines) + return NULL; + l = sf->lines[line]; + if (!l) + return NULL; + p = memchr(l, '\n', sf->map + sf->maplen - l); + *lenp = p - l; + return l; +} -- cgit v1.3.1