From d7c176e9b5329b4a490b3d8ea49564fc9ff11071 Mon Sep 17 00:00:00 2001 From: Carlos Llamas Date: Wed, 9 Jun 2021 19:50:58 +0000 Subject: docs: printk-formats: update size-casting examples Since commit 72deb455b5ec ("block: remove CONFIG_LBDAF") sector_t and blkcnt_t types are no longer variable in size, making them unsuitable examples for casting to the largest possible type. This patch replaces such examples with cycles_t and blk_status_t types, whose sizes depend on architecture and config options respectively. Signed-off-by: Carlos Llamas Link: https://lore.kernel.org/r/20210609195058.3518943-1-cmllamas@google.com Signed-off-by: Jonathan Corbet --- Documentation/core-api/printk-formats.rst | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) (limited to 'Documentation/core-api/printk-formats.rst') diff --git a/Documentation/core-api/printk-formats.rst b/Documentation/core-api/printk-formats.rst index f063a384c7c8..385c0cc52f1f 100644 --- a/Documentation/core-api/printk-formats.rst +++ b/Documentation/core-api/printk-formats.rst @@ -37,14 +37,13 @@ Integer types u64 %llu or %llx -If is dependent on a config option for its size (e.g., sector_t, -blkcnt_t) or is architecture-dependent for its size (e.g., tcflag_t), use a -format specifier of its largest possible type and explicitly cast to it. +If is architecture-dependent for its size (e.g., cycles_t, tcflag_t) or +is dependent on a config option for its size (e.g., blk_status_t), use a format +specifier of its largest possible type and explicitly cast to it. Example:: - printk("test: sector number/total blocks: %llu/%llu\n", - (unsigned long long)sector, (unsigned long long)blockcount); + printk("test: latency: %llu cycles\n", (unsigned long long)time); Reminder: sizeof() returns type size_t. -- cgit