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linux/drivers/thermal/testing/command.c

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thermal: Introduce a debugfs-based testing facility Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-08-22 17:42:57 +02:00
thermal: testing: zone: Flush work items during cleanup To prevent freed module code from being executed during the thermal testing module unload, make it add a dedicated workqueue for thermal testing work items and flush it in thermal_testing_exit(). Fixes: f6a034f2df42 ("thermal: Introduce a debugfs-based testing facility") Link: https://sashiko.dev/#/patchset/20260605185212.2491144-1-sam.moelius%40trailofbits.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/1959388.tdWV9SEqCh@rafael.j.wysocki [ rjw: Make variable d_command static ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2026-06-19 17:01:27 +02:00
thermal: Introduce a debugfs-based testing facility Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-08-22 17:42:57 +02:00
thermal: testing: reject missing command arguments The thermal testing debugfs command parser splits commands at ':' and passes the right-hand side to the command implementation. Commands such as deltz, tzaddtrip, tzreg, and tzunreg require a zone id, but writing one of those command names without ':' leaves the argument pointer NULL. The command implementations parse the id with sscanf(arg, "%d", ...), so the missing-argument form dereferences a NULL pointer from the debugfs write path. Reject missing arguments in tt_command_exec() before calling handlers that require an id. Fixes: f6a034f2df42 ("thermal: Introduce a debugfs-based testing facility") Assisted-by: Codex:gpt-5.5-cyber-preview Signed-off-by: Samuel Moelius <sam.moelius@trailofbits.com> Link: https://patch.msgid.link/20260605185212.2491144-1-sam.moelius@trailofbits.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2026-06-05 18:52:06 +00:00
thermal: Introduce a debugfs-based testing facility Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-08-22 17:42:57 +02:00
thermal: testing: reject missing command arguments The thermal testing debugfs command parser splits commands at ':' and passes the right-hand side to the command implementation. Commands such as deltz, tzaddtrip, tzreg, and tzunreg require a zone id, but writing one of those command names without ':' leaves the argument pointer NULL. The command implementations parse the id with sscanf(arg, "%d", ...), so the missing-argument form dereferences a NULL pointer from the debugfs write path. Reject missing arguments in tt_command_exec() before calling handlers that require an id. Fixes: f6a034f2df42 ("thermal: Introduce a debugfs-based testing facility") Assisted-by: Codex:gpt-5.5-cyber-preview Signed-off-by: Samuel Moelius <sam.moelius@trailofbits.com> Link: https://patch.msgid.link/20260605185212.2491144-1-sam.moelius@trailofbits.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2026-06-05 18:52:06 +00:00
thermal: Introduce a debugfs-based testing facility Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-08-22 17:42:57 +02:00
thermal: testing: reject missing command arguments The thermal testing debugfs command parser splits commands at ':' and passes the right-hand side to the command implementation. Commands such as deltz, tzaddtrip, tzreg, and tzunreg require a zone id, but writing one of those command names without ':' leaves the argument pointer NULL. The command implementations parse the id with sscanf(arg, "%d", ...), so the missing-argument form dereferences a NULL pointer from the debugfs write path. Reject missing arguments in tt_command_exec() before calling handlers that require an id. Fixes: f6a034f2df42 ("thermal: Introduce a debugfs-based testing facility") Assisted-by: Codex:gpt-5.5-cyber-preview Signed-off-by: Samuel Moelius <sam.moelius@trailofbits.com> Link: https://patch.msgid.link/20260605185212.2491144-1-sam.moelius@trailofbits.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2026-06-05 18:52:06 +00:00
thermal: Introduce a debugfs-based testing facility Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-08-22 17:42:57 +02:00
thermal: testing: reject missing command arguments The thermal testing debugfs command parser splits commands at ':' and passes the right-hand side to the command implementation. Commands such as deltz, tzaddtrip, tzreg, and tzunreg require a zone id, but writing one of those command names without ':' leaves the argument pointer NULL. The command implementations parse the id with sscanf(arg, "%d", ...), so the missing-argument form dereferences a NULL pointer from the debugfs write path. Reject missing arguments in tt_command_exec() before calling handlers that require an id. Fixes: f6a034f2df42 ("thermal: Introduce a debugfs-based testing facility") Assisted-by: Codex:gpt-5.5-cyber-preview Signed-off-by: Samuel Moelius <sam.moelius@trailofbits.com> Link: https://patch.msgid.link/20260605185212.2491144-1-sam.moelius@trailofbits.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2026-06-05 18:52:06 +00:00
thermal: Introduce a debugfs-based testing facility Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-08-22 17:42:57 +02:00
fix tt_command_write() 1) unbalanced debugfs_file_get(). Not needed in the first place - file_operations are accessed only via debugfs_create_file(), so debugfs wrappers will take care of that itself. 2) kmalloc() for a buffer used only for duration of a function is not a problem, but for a buffer no longer than 16 bytes? 3) strstr() is for finding substrings; for finding a character there's strchr(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: "Rafael J. Wysocki" <rafael@kernel.org> Link: https://lore.kernel.org/r/20250702212542.GH3406663@ZenIV Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-07-02 22:25:42 +01:00
thermal: Introduce a debugfs-based testing facility Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-08-22 17:42:57 +02:00
fix tt_command_write() 1) unbalanced debugfs_file_get(). Not needed in the first place - file_operations are accessed only via debugfs_create_file(), so debugfs wrappers will take care of that itself. 2) kmalloc() for a buffer used only for duration of a function is not a problem, but for a buffer no longer than 16 bytes? 3) strstr() is for finding substrings; for finding a character there's strchr(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: "Rafael J. Wysocki" <rafael@kernel.org> Link: https://lore.kernel.org/r/20250702212542.GH3406663@ZenIV Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-07-02 22:25:42 +01:00
thermal: Introduce a debugfs-based testing facility Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-08-22 17:42:57 +02:00
fix tt_command_write() 1) unbalanced debugfs_file_get(). Not needed in the first place - file_operations are accessed only via debugfs_create_file(), so debugfs wrappers will take care of that itself. 2) kmalloc() for a buffer used only for duration of a function is not a problem, but for a buffer no longer than 16 bytes? 3) strstr() is for finding substrings; for finding a character there's strchr(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: "Rafael J. Wysocki" <rafael@kernel.org> Link: https://lore.kernel.org/r/20250702212542.GH3406663@ZenIV Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-07-02 22:25:42 +01:00
thermal: Introduce a debugfs-based testing facility Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-08-22 17:42:57 +02:00
fix tt_command_write() 1) unbalanced debugfs_file_get(). Not needed in the first place - file_operations are accessed only via debugfs_create_file(), so debugfs wrappers will take care of that itself. 2) kmalloc() for a buffer used only for duration of a function is not a problem, but for a buffer no longer than 16 bytes? 3) strstr() is for finding substrings; for finding a character there's strchr(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: "Rafael J. Wysocki" <rafael@kernel.org> Link: https://lore.kernel.org/r/20250702212542.GH3406663@ZenIV Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-07-02 22:25:42 +01:00
thermal: Introduce a debugfs-based testing facility Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-08-22 17:42:57 +02:00
fix tt_command_write() 1) unbalanced debugfs_file_get(). Not needed in the first place - file_operations are accessed only via debugfs_create_file(), so debugfs wrappers will take care of that itself. 2) kmalloc() for a buffer used only for duration of a function is not a problem, but for a buffer no longer than 16 bytes? 3) strstr() is for finding substrings; for finding a character there's strchr(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: "Rafael J. Wysocki" <rafael@kernel.org> Link: https://lore.kernel.org/r/20250702212542.GH3406663@ZenIV Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-07-02 22:25:42 +01:00
thermal: Introduce a debugfs-based testing facility Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-08-22 17:42:57 +02:00
fix tt_command_write() 1) unbalanced debugfs_file_get(). Not needed in the first place - file_operations are accessed only via debugfs_create_file(), so debugfs wrappers will take care of that itself. 2) kmalloc() for a buffer used only for duration of a function is not a problem, but for a buffer no longer than 16 bytes? 3) strstr() is for finding substrings; for finding a character there's strchr(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: "Rafael J. Wysocki" <rafael@kernel.org> Link: https://lore.kernel.org/r/20250702212542.GH3406663@ZenIV Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-07-02 22:25:42 +01:00
thermal: Introduce a debugfs-based testing facility Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-08-22 17:42:57 +02:00
fix tt_command_write() 1) unbalanced debugfs_file_get(). Not needed in the first place - file_operations are accessed only via debugfs_create_file(), so debugfs wrappers will take care of that itself. 2) kmalloc() for a buffer used only for duration of a function is not a problem, but for a buffer no longer than 16 bytes? 3) strstr() is for finding substrings; for finding a character there's strchr(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: "Rafael J. Wysocki" <rafael@kernel.org> Link: https://lore.kernel.org/r/20250702212542.GH3406663@ZenIV Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-07-02 22:25:42 +01:00
thermal: Introduce a debugfs-based testing facility Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-08-22 17:42:57 +02:00
fix tt_command_write() 1) unbalanced debugfs_file_get(). Not needed in the first place - file_operations are accessed only via debugfs_create_file(), so debugfs wrappers will take care of that itself. 2) kmalloc() for a buffer used only for duration of a function is not a problem, but for a buffer no longer than 16 bytes? 3) strstr() is for finding substrings; for finding a character there's strchr(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: "Rafael J. Wysocki" <rafael@kernel.org> Link: https://lore.kernel.org/r/20250702212542.GH3406663@ZenIV Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-07-02 22:25:42 +01:00
thermal: Introduce a debugfs-based testing facility Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-08-22 17:42:57 +02:00
thermal: testing: zone: Flush work items during cleanup To prevent freed module code from being executed during the thermal testing module unload, make it add a dedicated workqueue for thermal testing work items and flush it in thermal_testing_exit(). Fixes: f6a034f2df42 ("thermal: Introduce a debugfs-based testing facility") Link: https://sashiko.dev/#/patchset/20260605185212.2491144-1-sam.moelius%40trailofbits.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/1959388.tdWV9SEqCh@rafael.j.wysocki [ rjw: Make variable d_command static ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2026-06-19 17:01:27 +02:00
thermal: Introduce a debugfs-based testing facility Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-08-22 17:42:57 +02:00
thermal: testing: zone: Flush work items during cleanup To prevent freed module code from being executed during the thermal testing module unload, make it add a dedicated workqueue for thermal testing work items and flush it in thermal_testing_exit(). Fixes: f6a034f2df42 ("thermal: Introduce a debugfs-based testing facility") Link: https://sashiko.dev/#/patchset/20260605185212.2491144-1-sam.moelius%40trailofbits.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/1959388.tdWV9SEqCh@rafael.j.wysocki [ rjw: Make variable d_command static ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2026-06-19 17:01:27 +02:00
thermal: Introduce a debugfs-based testing facility Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-08-22 17:42:57 +02:00
thermal: testing: zone: Flush work items during cleanup To prevent freed module code from being executed during the thermal testing module unload, make it add a dedicated workqueue for thermal testing work items and flush it in thermal_testing_exit(). Fixes: f6a034f2df42 ("thermal: Introduce a debugfs-based testing facility") Link: https://sashiko.dev/#/patchset/20260605185212.2491144-1-sam.moelius%40trailofbits.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/1959388.tdWV9SEqCh@rafael.j.wysocki [ rjw: Make variable d_command static ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2026-06-19 17:01:27 +02:00
thermal: Introduce a debugfs-based testing facility Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-08-22 17:42:57 +02:00
thermal: testing: zone: Flush work items during cleanup To prevent freed module code from being executed during the thermal testing module unload, make it add a dedicated workqueue for thermal testing work items and flush it in thermal_testing_exit(). Fixes: f6a034f2df42 ("thermal: Introduce a debugfs-based testing facility") Link: https://sashiko.dev/#/patchset/20260605185212.2491144-1-sam.moelius%40trailofbits.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/1959388.tdWV9SEqCh@rafael.j.wysocki [ rjw: Make variable d_command static ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2026-06-19 17:01:27 +02:00
thermal: Introduce a debugfs-based testing facility Introduce a facility allowing the thermal core functionality to be exercised in a controlled way in order to verify its behavior, without affecting its regular users noticeably. It is based on the idea of preparing thermal zone templates along with their trip points by writing to files in debugfs. When ready, those templates can be used for registering test thermal zones with the thermal core. The temperature of a test thermal zone created this way can be adjusted via debugfs, which also triggers a __thermal_zone_device_update() call for it. By manipulating the temperature of a test thermal zone, one can check if the thermal core reacts to the changes of it as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/6065927.lOV4Wx5bFT@rjwysocki.net [ rjw: Fixed ordering of kcalloc() arguments ] [ rjw: Fixed debugfs_create_dir() return value checks ] [ rjw: Fixed two kerneldoc comments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-08-22 17:42:57 +02:00