diff options
Diffstat (limited to 'cmd')
| -rw-r--r-- | cmd/Kconfig | 11 | ||||
| -rw-r--r-- | cmd/Makefile | 1 | ||||
| -rw-r--r-- | cmd/blkcache.c | 89 |
3 files changed, 101 insertions, 0 deletions
diff --git a/cmd/Kconfig b/cmd/Kconfig index cdcaff8bea..fe8b4f0510 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -497,6 +497,17 @@ config SYS_AMBAPP_PRINT_ON_STARTUP help Show AMBA Plug-n-Play information on startup. +config CMD_BLOCK_CACHE + bool "blkcache - control and stats for block cache" + depends on BLOCK_CACHE + default y if BLOCK_CACHE + help + Enable the blkcache command, which can be used to control the + operation of the cache functions. + This is most useful when fine-tuning the operation of the cache + during development, but also allows the cache to be disabled when + it might hurt performance (e.g. when using the ums command). + config CMD_TIME bool "time" help diff --git a/cmd/Makefile b/cmd/Makefile index 7604621859..ba04197307 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -20,6 +20,7 @@ obj-$(CONFIG_SOURCE) += source.o obj-$(CONFIG_CMD_SOURCE) += source.o obj-$(CONFIG_CMD_BDI) += bdinfo.o obj-$(CONFIG_CMD_BEDBUG) += bedbug.o +obj-$(CONFIG_CMD_BLOCK_CACHE) += blkcache.o obj-$(CONFIG_CMD_BMP) += bmp.o obj-$(CONFIG_CMD_BOOTEFI) += bootefi.o obj-$(CONFIG_CMD_BOOTMENU) += bootmenu.o diff --git a/cmd/blkcache.c b/cmd/blkcache.c new file mode 100644 index 0000000000..9a619e2199 --- /dev/null +++ b/cmd/blkcache.c @@ -0,0 +1,89 @@ +/* + * Copyright (C) Nelson Integration, LLC 2016 + * Author: Eric Nelson<eric@nelint.com> + * + * SPDX-License-Identifier: GPL-2.0+ + * + */ +#include <config.h> +#include <common.h> +#include <malloc.h> +#include <part.h> + +static int blkc_show(cmd_tbl_t *cmdtp, int flag, + int argc, char * const argv[]) +{ + struct block_cache_stats stats; + blkcache_stats(&stats); + + printf(" hits: %u\n" + " misses: %u\n" + " entries: %u\n" + " max blocks/entry: %u\n" + " max cache entries: %u\n", + stats.hits, stats.misses, stats.entries, + stats.max_blocks_per_entry, stats.max_entries); + return 0; +} + +static int blkc_configure(cmd_tbl_t *cmdtp, int flag, + int argc, char * const argv[]) +{ + unsigned blocks_per_entry, max_entries; + if (argc != 3) + return CMD_RET_USAGE; + + blocks_per_entry = simple_strtoul(argv[1], 0, 0); + max_entries = simple_strtoul(argv[2], 0, 0); + blkcache_configure(blocks_per_entry, max_entries); + printf("changed to max of %u entries of %u blocks each\n", + max_entries, blocks_per_entry); + return 0; +} + +static cmd_tbl_t cmd_blkc_sub[] = { + U_BOOT_CMD_MKENT(show, 0, 0, blkc_show, "", ""), + U_BOOT_CMD_MKENT(configure, 3, 0, blkc_configure, "", ""), +}; + +static __maybe_unused void blkc_reloc(void) +{ + static int relocated; + + if (!relocated) { + fixup_cmdtable(cmd_blkc_sub, ARRAY_SIZE(cmd_blkc_sub)); + relocated = 1; + }; +} + +static int do_blkcache(cmd_tbl_t *cmdtp, int flag, + int argc, char * const argv[]) +{ + cmd_tbl_t *c; + +#ifdef CONFIG_NEEDS_MANUAL_RELOC + blkc_reloc(); +#endif + if (argc < 2) + return CMD_RET_USAGE; + + /* Strip off leading argument */ + argc--; + argv++; + + c = find_cmd_tbl(argv[0], &cmd_blkc_sub[0], ARRAY_SIZE(cmd_blkc_sub)); + + if (c) + return c->cmd(cmdtp, flag, argc, argv); + else + return CMD_RET_USAGE; + + return 0; +} + +U_BOOT_CMD( + blkcache, 4, 0, do_blkcache, + "block cache diagnostics and control", + "show - show and reset statistics\n" + "blkcache configure blocks entries\n" +); |
