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Tue, 24 Oct 2023 06:46:43 -0700 (PDT) Date: Tue, 24 Oct 2023 06:45:58 -0700 In-Reply-To: <20231024134637.3120277-1-surenb@google.com> Precedence: bulk X-Mailing-List: linux-modules@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20231024134637.3120277-1-surenb@google.com> X-Mailer: git-send-email 2.42.0.758.gaed0368e0e-goog Message-ID: <20231024134637.3120277-2-surenb@google.com> Subject: [PATCH v2 01/39] lib/string_helpers: Add flags param to string_get_size() From: Suren Baghdasaryan To: akpm@linux-foundation.org Cc: kent.overstreet@linux.dev, mhocko@suse.com, vbabka@suse.cz, hannes@cmpxchg.org, roman.gushchin@linux.dev, mgorman@suse.de, dave@stgolabs.net, willy@infradead.org, liam.howlett@oracle.com, corbet@lwn.net, void@manifault.com, peterz@infradead.org, juri.lelli@redhat.com, ldufour@linux.ibm.com, catalin.marinas@arm.com, will@kernel.org, arnd@arndb.de, tglx@linutronix.de, mingo@redhat.com, dave.hansen@linux.intel.com, x86@kernel.org, peterx@redhat.com, david@redhat.com, axboe@kernel.dk, mcgrof@kernel.org, masahiroy@kernel.org, nathan@kernel.org, dennis@kernel.org, tj@kernel.org, muchun.song@linux.dev, rppt@kernel.org, paulmck@kernel.org, pasha.tatashin@soleen.com, yosryahmed@google.com, yuzhao@google.com, dhowells@redhat.com, hughd@google.com, andreyknvl@gmail.com, keescook@chromium.org, ndesaulniers@google.com, vvvvvv@google.com, gregkh@linuxfoundation.org, ebiggers@google.com, ytcoode@gmail.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, bristot@redhat.com, vschneid@redhat.com, cl@linux.com, penberg@kernel.org, iamjoonsoo.kim@lge.com, 42.hyeyoo@gmail.com, glider@google.com, elver@google.com, dvyukov@google.com, shakeelb@google.com, songmuchun@bytedance.com, jbaron@akamai.com, rientjes@google.com, minchan@google.com, kaleshsingh@google.com, surenb@google.com, kernel-team@android.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev, linux-arch@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, kasan-dev@googlegroups.com, cgroups@vger.kernel.org, Andy Shevchenko , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , "Michael S. Tsirkin" , Jason Wang , " =?utf-8?q?Noralf_Tr=C3=B8nnes?= " From: Kent Overstreet The new flags parameter allows controlling - Whether or not the units suffix is separated by a space, for compatibility with sort -h - Whether or not to append a B suffix - we're not always printing bytes. Signed-off-by: Kent Overstreet Signed-off-by: Suren Baghdasaryan Cc: Andy Shevchenko Cc: Michael Ellerman Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: "Michael S. Tsirkin" Cc: Jason Wang Cc: "Noralf Trønnes" Cc: Jens Axboe --- arch/powerpc/mm/book3s64/radix_pgtable.c | 2 +- drivers/block/virtio_blk.c | 4 ++-- drivers/gpu/drm/gud/gud_drv.c | 2 +- drivers/mmc/core/block.c | 4 ++-- drivers/mtd/spi-nor/debugfs.c | 6 ++--- .../ethernet/chelsio/cxgb4/cxgb4_debugfs.c | 4 ++-- drivers/scsi/sd.c | 8 +++---- include/linux/string_helpers.h | 13 +++++----- lib/string_helpers.c | 24 +++++++++++++------ lib/test-string_helpers.c | 4 ++-- mm/hugetlb.c | 8 +++---- 11 files changed, 44 insertions(+), 35 deletions(-) diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c index c6a4ac766b2b..27aa5a083ff0 100644 --- a/arch/powerpc/mm/book3s64/radix_pgtable.c +++ b/arch/powerpc/mm/book3s64/radix_pgtable.c @@ -260,7 +260,7 @@ print_mapping(unsigned long start, unsigned long end, unsigned long size, bool e if (end <= start) return; - string_get_size(size, 1, STRING_UNITS_2, buf, sizeof(buf)); + string_get_size(size, 1, STRING_SIZE_BASE2, buf, sizeof(buf)); pr_info("Mapped 0x%016lx-0x%016lx with %s pages%s\n", start, end, buf, exec ? " (exec)" : ""); diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 1fe011676d07..59140424d755 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -986,9 +986,9 @@ static void virtblk_update_capacity(struct virtio_blk *vblk, bool resize) nblocks = DIV_ROUND_UP_ULL(capacity, queue_logical_block_size(q) >> 9); string_get_size(nblocks, queue_logical_block_size(q), - STRING_UNITS_2, cap_str_2, sizeof(cap_str_2)); + STRING_SIZE_BASE2, cap_str_2, sizeof(cap_str_2)); string_get_size(nblocks, queue_logical_block_size(q), - STRING_UNITS_10, cap_str_10, sizeof(cap_str_10)); + 0, cap_str_10, sizeof(cap_str_10)); dev_notice(&vdev->dev, "[%s] %s%llu %d-byte logical blocks (%s/%s)\n", diff --git a/drivers/gpu/drm/gud/gud_drv.c b/drivers/gpu/drm/gud/gud_drv.c index 9d7bf8ee45f1..6b1748e1f666 100644 --- a/drivers/gpu/drm/gud/gud_drv.c +++ b/drivers/gpu/drm/gud/gud_drv.c @@ -329,7 +329,7 @@ static int gud_stats_debugfs(struct seq_file *m, void *data) struct gud_device *gdrm = to_gud_device(entry->dev); char buf[10]; - string_get_size(gdrm->bulk_len, 1, STRING_UNITS_2, buf, sizeof(buf)); + string_get_size(gdrm->bulk_len, 1, STRING_SIZE_BASE2, buf, sizeof(buf)); seq_printf(m, "Max buffer size: %s\n", buf); seq_printf(m, "Number of errors: %u\n", gdrm->stats_num_errors); diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index 3a8f27c3e310..411dc8137f7c 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -2511,7 +2511,7 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card, blk_queue_write_cache(md->queue.queue, cache_enabled, fua_enabled); - string_get_size((u64)size, 512, STRING_UNITS_2, + string_get_size((u64)size, 512, STRING_SIZE_BASE2, cap_str, sizeof(cap_str)); pr_info("%s: %s %s %s%s\n", md->disk->disk_name, mmc_card_id(card), mmc_card_name(card), @@ -2707,7 +2707,7 @@ static int mmc_blk_alloc_rpmb_part(struct mmc_card *card, list_add(&rpmb->node, &md->rpmbs); - string_get_size((u64)size, 512, STRING_UNITS_2, + string_get_size((u64)size, 512, STRING_SIZE_BASE2, cap_str, sizeof(cap_str)); pr_info("%s: %s %s %s, chardev (%d:%d)\n", diff --git a/drivers/mtd/spi-nor/debugfs.c b/drivers/mtd/spi-nor/debugfs.c index 6e163cb5b478..a1b61938fee2 100644 --- a/drivers/mtd/spi-nor/debugfs.c +++ b/drivers/mtd/spi-nor/debugfs.c @@ -85,7 +85,7 @@ static int spi_nor_params_show(struct seq_file *s, void *data) seq_printf(s, "name\t\t%s\n", info->name); seq_printf(s, "id\t\t%*ph\n", SPI_NOR_MAX_ID_LEN, nor->id); - string_get_size(params->size, 1, STRING_UNITS_2, buf, sizeof(buf)); + string_get_size(params->size, 1, STRING_SIZE_BASE2, buf, sizeof(buf)); seq_printf(s, "size\t\t%s\n", buf); seq_printf(s, "write size\t%u\n", params->writesize); seq_printf(s, "page size\t%u\n", params->page_size); @@ -130,14 +130,14 @@ static int spi_nor_params_show(struct seq_file *s, void *data) struct spi_nor_erase_type *et = &erase_map->erase_type[i]; if (et->size) { - string_get_size(et->size, 1, STRING_UNITS_2, buf, + string_get_size(et->size, 1, STRING_SIZE_BASE2, buf, sizeof(buf)); seq_printf(s, " %02x (%s) [%d]\n", et->opcode, buf, i); } } if (!(nor->flags & SNOR_F_NO_OP_CHIP_ERASE)) { - string_get_size(params->size, 1, STRING_UNITS_2, buf, sizeof(buf)); + string_get_size(params->size, 1, STRING_SIZE_BASE2, buf, sizeof(buf)); seq_printf(s, " %02x (%s)\n", SPINOR_OP_CHIP_ERASE, buf); } diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c index 14e0d989c3ba..7d5fbebd36fc 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c @@ -3457,8 +3457,8 @@ static void mem_region_show(struct seq_file *seq, const char *name, { char buf[40]; - string_get_size((u64)to - from + 1, 1, STRING_UNITS_2, buf, - sizeof(buf)); + string_get_size((u64)to - from + 1, 1, STRING_SIZE_BASE2, + buf, sizeof(buf)); seq_printf(seq, "%-15s %#x-%#x [%s]\n", name, from, to, buf); } diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 83b6a3f3863b..c37593f76b65 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -2689,10 +2689,10 @@ sd_print_capacity(struct scsi_disk *sdkp, if (!sdkp->first_scan && old_capacity == sdkp->capacity) return; - string_get_size(sdkp->capacity, sector_size, - STRING_UNITS_2, cap_str_2, sizeof(cap_str_2)); - string_get_size(sdkp->capacity, sector_size, - STRING_UNITS_10, cap_str_10, sizeof(cap_str_10)); + string_get_size(sdkp->capacity, sector_size, STRING_SIZE_BASE2, + cap_str_2, sizeof(cap_str_2)); + string_get_size(sdkp->capacity, sector_size, 0, + cap_str_10, sizeof(cap_str_10)); sd_printk(KERN_NOTICE, sdkp, "%llu %d-byte logical blocks: (%s/%s)\n", diff --git a/include/linux/string_helpers.h b/include/linux/string_helpers.h index 9d1f5bb74dd5..a54467d891db 100644 --- a/include/linux/string_helpers.h +++ b/include/linux/string_helpers.h @@ -17,15 +17,14 @@ static inline bool string_is_terminated(const char *s, int len) return memchr(s, '\0', len) ? true : false; } -/* Descriptions of the types of units to - * print in */ -enum string_size_units { - STRING_UNITS_10, /* use powers of 10^3 (standard SI) */ - STRING_UNITS_2, /* use binary powers of 2^10 */ +enum string_size_flags { + STRING_SIZE_BASE2 = (1 << 0), + STRING_SIZE_NOSPACE = (1 << 1), + STRING_SIZE_NOBYTES = (1 << 2), }; -void string_get_size(u64 size, u64 blk_size, enum string_size_units units, - char *buf, int len); +int string_get_size(u64 size, u64 blk_size, enum string_size_flags flags, + char *buf, int len); int parse_int_array_user(const char __user *from, size_t count, int **array); diff --git a/lib/string_helpers.c b/lib/string_helpers.c index 9982344cca34..b1496499b113 100644 --- a/lib/string_helpers.c +++ b/lib/string_helpers.c @@ -19,11 +19,17 @@ #include #include +enum string_size_units { + STRING_UNITS_10, /* use powers of 10^3 (standard SI) */ + STRING_UNITS_2, /* use binary powers of 2^10 */ +}; + /** * string_get_size - get the size in the specified units * @size: The size to be converted in blocks * @blk_size: Size of the block (use 1 for size in bytes) - * @units: units to use (powers of 1000 or 1024) + * @flags: units to use (powers of 1000 or 1024), whether to include space + * separator * @buf: buffer to format to * @len: length of buffer * @@ -32,14 +38,16 @@ * at least 9 bytes and will always be zero terminated. * */ -void string_get_size(u64 size, u64 blk_size, const enum string_size_units units, - char *buf, int len) +int string_get_size(u64 size, u64 blk_size, enum string_size_flags flags, + char *buf, int len) { + enum string_size_units units = flags & flags & STRING_SIZE_BASE2 + ? STRING_UNITS_2 : STRING_UNITS_10; static const char *const units_10[] = { - "B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB" + "", "k", "M", "G", "T", "P", "E", "Z", "Y" }; static const char *const units_2[] = { - "B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB" + "", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi", "Yi" }; static const char *const *const units_str[] = { [STRING_UNITS_10] = units_10, @@ -126,8 +134,10 @@ void string_get_size(u64 size, u64 blk_size, const enum string_size_units units, else unit = units_str[units][i]; - snprintf(buf, len, "%u%s %s", (u32)size, - tmp, unit); + return snprintf(buf, len, "%u%s%s%s%s", (u32)size, tmp, + (flags & STRING_SIZE_NOSPACE) ? "" : " ", + unit, + (flags & STRING_SIZE_NOBYTES) ? "" : "B"); } EXPORT_SYMBOL(string_get_size); diff --git a/lib/test-string_helpers.c b/lib/test-string_helpers.c index 9a68849a5d55..0b01ffca96fb 100644 --- a/lib/test-string_helpers.c +++ b/lib/test-string_helpers.c @@ -507,8 +507,8 @@ static __init void __test_string_get_size(const u64 size, const u64 blk_size, char buf10[string_get_size_maxbuf]; char buf2[string_get_size_maxbuf]; - string_get_size(size, blk_size, STRING_UNITS_10, buf10, sizeof(buf10)); - string_get_size(size, blk_size, STRING_UNITS_2, buf2, sizeof(buf2)); + string_get_size(size, blk_size, 0, buf10, sizeof(buf10)); + string_get_size(size, blk_size, STRING_SIZE_BASE2, buf2, sizeof(buf2)); test_string_get_size_check("STRING_UNITS_10", exp_result10, buf10, size, blk_size); diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 52d26072dfda..37f2148d3b9c 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -3228,7 +3228,7 @@ static void __init hugetlb_hstate_alloc_pages_onenode(struct hstate *h, int nid) if (i == h->max_huge_pages_node[nid]) return; - string_get_size(huge_page_size(h), 1, STRING_UNITS_2, buf, 32); + string_get_size(huge_page_size(h), 1, STRING_SIZE_BASE2, buf, 32); pr_warn("HugeTLB: allocating %u of page size %s failed node%d. Only allocated %lu hugepages.\n", h->max_huge_pages_node[nid], buf, nid, i); h->max_huge_pages -= (h->max_huge_pages_node[nid] - i); @@ -3290,7 +3290,7 @@ static void __init hugetlb_hstate_alloc_pages(struct hstate *h) if (i < h->max_huge_pages) { char buf[32]; - string_get_size(huge_page_size(h), 1, STRING_UNITS_2, buf, 32); + string_get_size(huge_page_size(h), 1, STRING_SIZE_BASE2, buf, 32); pr_warn("HugeTLB: allocating %lu of page size %s failed. Only allocated %lu hugepages.\n", h->max_huge_pages, buf, i); h->max_huge_pages = i; @@ -3336,7 +3336,7 @@ static void __init report_hugepages(void) for_each_hstate(h) { char buf[32]; - string_get_size(huge_page_size(h), 1, STRING_UNITS_2, buf, 32); + string_get_size(huge_page_size(h), 1, STRING_SIZE_BASE2, buf, 32); pr_info("HugeTLB: registered %s page size, pre-allocated %ld pages\n", buf, h->free_huge_pages); pr_info("HugeTLB: %d KiB vmemmap can be freed for a %s page\n", @@ -4227,7 +4227,7 @@ static int __init hugetlb_init(void) char buf[32]; string_get_size(huge_page_size(&default_hstate), - 1, STRING_UNITS_2, buf, 32); + 1, STRING_SIZE_BASE2, buf, 32); pr_warn("HugeTLB: Ignoring hugepages=%lu associated with %s page size\n", default_hstate.max_huge_pages, buf); pr_warn("HugeTLB: Using hugepages=%lu for number of default huge pages\n",