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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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b37cafacbf
When printk-indexing is enabled, each printk() invocation emits a pi_entry structure. This is even true when the call is protected by an always-false check: while the actual code to print the message is optimized out by the compiler, the pi_entry structure is still emitted. Fix this by replacing "if (0) printk(...)" constructs by calls to the no_printk() helper. This reduces the size of an arm64 kernel with CONFIG_PRINTK_INDEX=y and CONFIG_CEPH_FS=y by ca. 4 KiB. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Chris Down <chris@chrisdown.name> Reviewed-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/a21767eccb823435a7f18cdf115d7d572b4e945d.1709127473.git.geert+renesas@glider.be Signed-off-by: Petr Mladek <pmladek@suse.com>
74 lines
2.4 KiB
C
74 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _FS_CEPH_DEBUG_H
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#define _FS_CEPH_DEBUG_H
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/string.h>
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#ifdef CONFIG_CEPH_LIB_PRETTYDEBUG
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/*
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* wrap pr_debug to include a filename:lineno prefix on each line.
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* this incurs some overhead (kernel size and execution time) due to
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* the extra function call at each call site.
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*/
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# if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
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# define dout(fmt, ...) \
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pr_debug("%.*s %12.12s:%-4d : " fmt, \
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8 - (int)sizeof(KBUILD_MODNAME), " ", \
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kbasename(__FILE__), __LINE__, ##__VA_ARGS__)
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# define doutc(client, fmt, ...) \
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pr_debug("%.*s %12.12s:%-4d : [%pU %llu] " fmt, \
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8 - (int)sizeof(KBUILD_MODNAME), " ", \
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kbasename(__FILE__), __LINE__, \
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&client->fsid, client->monc.auth->global_id, \
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##__VA_ARGS__)
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# else
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/* faux printk call just to see any compiler warnings. */
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# define dout(fmt, ...) \
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no_printk(KERN_DEBUG fmt, ##__VA_ARGS__)
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# define doutc(client, fmt, ...) \
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no_printk(KERN_DEBUG "[%pU %llu] " fmt, \
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&client->fsid, \
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client->monc.auth->global_id, \
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##__VA_ARGS__)
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# endif
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#else
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/*
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* or, just wrap pr_debug
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*/
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# define dout(fmt, ...) pr_debug(" " fmt, ##__VA_ARGS__)
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# define doutc(client, fmt, ...) \
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pr_debug(" [%pU %llu] %s: " fmt, &client->fsid, \
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client->monc.auth->global_id, __func__, ##__VA_ARGS__)
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#endif
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#define pr_notice_client(client, fmt, ...) \
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pr_notice("[%pU %llu]: " fmt, &client->fsid, \
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client->monc.auth->global_id, ##__VA_ARGS__)
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#define pr_info_client(client, fmt, ...) \
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pr_info("[%pU %llu]: " fmt, &client->fsid, \
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client->monc.auth->global_id, ##__VA_ARGS__)
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#define pr_warn_client(client, fmt, ...) \
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pr_warn("[%pU %llu]: " fmt, &client->fsid, \
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client->monc.auth->global_id, ##__VA_ARGS__)
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#define pr_warn_once_client(client, fmt, ...) \
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pr_warn_once("[%pU %llu]: " fmt, &client->fsid, \
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client->monc.auth->global_id, ##__VA_ARGS__)
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#define pr_err_client(client, fmt, ...) \
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pr_err("[%pU %llu]: " fmt, &client->fsid, \
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client->monc.auth->global_id, ##__VA_ARGS__)
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#define pr_warn_ratelimited_client(client, fmt, ...) \
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pr_warn_ratelimited("[%pU %llu]: " fmt, &client->fsid, \
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client->monc.auth->global_id, ##__VA_ARGS__)
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#define pr_err_ratelimited_client(client, fmt, ...) \
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pr_err_ratelimited("[%pU %llu]: " fmt, &client->fsid, \
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client->monc.auth->global_id, ##__VA_ARGS__)
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#endif
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