/* * Copyright (C) 2002-2005 Roman Zippel * Copyright (C) 2002-2005 Sam Ravnborg * * Released under the terms of the GNU GPL v2.0. */ #include #include #include #include "lkc.h" /* file already present in list? If not add it */ struct file *file_lookup(const char *name) { struct file *file; const char *file_name = sym_expand_string_value(name); for (file = file_list; file; file = file->next) { if (!strcmp(name, file->name)) { free((void *)file_name); return file; } } file = xmalloc(sizeof(*file)); memset(file, 0, sizeof(*file)); file->name = file_name; file->next = file_list; file_list = file; return file; } /* write a dependency file as used by kbuild to track dependencies */ int file_write_dep(const char *name) { struct symbol *sym, *env_sym; struct expr *e; struct file *file; FILE *out; if (!name) name = ".kconfig.d"; out = fopen("..config.tmp", "w"); if (!out) return 1; fprintf(out, "deps_config := \\\n"); for (file = file_list; file; file = file->next) { if (file->next) fprintf(out, "\t%s \\\n", file->name); else fprintf(out, "\t%s\n", file->name); } fprintf(out, "\n%s: \\\n" "\t$(deps_config)\n\n", conf_get_autoconfig_name()); expr_list_for_each_sym(sym_env_list, e, sym) { struct property *prop; const char *value; prop = sym_get_env_prop(sym); env_sym = prop_get_symbol(prop); if (!env_sym) continue; value = getenv(env_sym->name); if (!value) value = ""; fprintf(out, "ifneq \"$(%s)\" \"%s\"\n", env_sym->name, value); fprintf(out, "%s: FORCE\n", conf_get_autoconfig_name()); fprintf(out, "endif\n"); } fprintf(out, "\n$(deps_config): ;\n"); fclose(out); rename("..config.tmp", name); return 0; } /* Allocate initial growable string */ struct gstr str_new(void) { struct gstr gs; gs.s = xmalloc(sizeof(char) * 64); gs.len = 64; gs.max_width = 0; strcpy(gs.s, "\0"); return gs; } /* Free storage for growable string */ void str_free(struct gstr *gs) { if (gs->s) free(gs->s); gs->s = NULL; gs->len = 0; } /* Append to growable string */ void str_append(struct gstr *gs, const char *s) { size_t l; if (s) { l = strlen(gs->s) + strlen(s) + 1; if (l > gs->len) { gs->s = realloc(gs->s, l); gs->len = l; } strcat(gs->s, s); } } /* Append printf formatted string to growable string */ void str_printf(struct gstr *gs, const char *fmt, ...) { va_list ap; char s[10000]; /* big enough... */ va_start(ap, fmt); vsnprintf(s, sizeof(s), fmt, ap); str_append(gs, s); va_end(ap); } /* Retrieve value of growable string */ const char *str_get(struct gstr *gs) { return gs->s; } void *xmalloc(size_t size) { void *p = malloc(size); if (p) return p; fprintf(stderr, "Out of memory.\n"); exit(1); } void *xcalloc(size_t nmemb, size_t size) { void *p = calloc(nmemb, size); if (p) return p; fprintf(stderr, "Out of memory.\n"); exit(1); } ab440de0a94d9ad8b3ce2d0'>perf/tests/kmod-path.c
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authorDaniel Vetter <daniel.vetter@ffwll.ch>2017-01-12 17:15:56 +0100
committerDaniel Vetter <daniel.vetter@ffwll.ch>2017-01-30 10:17:32 +0100
commite6e7b48b295afa5a5ab440de0a94d9ad8b3ce2d0 (patch)
tree77cadb6d8aad1b52c34e4afa8c9deef603bbe2ed /tools/perf/tests/kmod-path.c
parent4e5b54f127426c82dc2816340c26d951a5bb3429 (diff)
drm: Don't race connector registration
I was under the misconception that the sysfs dev stuff can be fully set up, and then registered all in one step with device_add. That's true for properties and property groups, but not for parents and child devices. Those must be fully registered before you can register a child. Add a bit of tracking to make sure that asynchronous mst connector hotplugging gets this right. For consistency we rely upon the implicit barriers of the connector->mutex, which is taken anyway, to ensure that at least either the connector or device registration call will work out. Mildly tested since I can't reliably reproduce this on my mst box here. Reported-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Acked-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1484237756-2720-1-git-send-email-daniel.vetter@ffwll.ch
Diffstat (limited to 'tools/perf/tests/kmod-path.c')